]> git.saurik.com Git - apple/icu.git/blobdiff - icuSources/i18n/smpdtfmt.cpp
ICU-64243.0.1.tar.gz
[apple/icu.git] / icuSources / i18n / smpdtfmt.cpp
index 8dde9ac16a94832b44ede63ec0fe888a556e3171..56c32c25acff65be19bfa96ae38c6f046596db8a 100644 (file)
@@ -1,6 +1,8 @@
+// © 2016 and later: Unicode, Inc. and others.
+// License & terms of use: http://www.unicode.org/copyright.html
 /*
 *******************************************************************************
-* Copyright (C) 1997-2010, International Business Machines Corporation and    *
+* Copyright (C) 1997-2016, International Business Machines Corporation and    *
 * others. All Rights Reserved.                                                *
 *******************************************************************************
 *
@@ -17,7 +19,7 @@
 *                             Removed getZoneIndex (added in DateFormatSymbols)
 *                             Removed subParseLong
 *                             Removed chk
-*  02/22/99     stephen     Removed character literals for EBCDIC safety
+*   02/22/99    stephen     Removed character literals for EBCDIC safety
 *   10/14/99    aliu        Updated 2-digit year parsing so that only "00" thru
 *                           "99" are recognized. {j28 4182066}
 *   11/15/99    weiv        Added support for week of year/day of week format
@@ -29,7 +31,6 @@
 #include "unicode/utypes.h"
 
 #if !UCONFIG_NO_FORMATTING
-
 #include "unicode/smpdtfmt.h"
 #include "unicode/dtfmtsym.h"
 #include "unicode/ures.h"
 #include "unicode/uniset.h"
 #include "unicode/ustring.h"
 #include "unicode/basictz.h"
+#include "unicode/simpleformatter.h"
 #include "unicode/simpletz.h"
 #include "unicode/rbtz.h"
+#include "unicode/tzfmt.h"
+#include "unicode/ucasemap.h"
+#include "unicode/utf16.h"
 #include "unicode/vtzone.h"
+#include "unicode/udisplaycontext.h"
+#include "unicode/brkiter.h"
+#include "unicode/rbnf.h"
+#include "unicode/dtptngen.h"
+#include "uresimp.h"
 #include "olsontz.h"
-#include "util.h"
+#include "patternprops.h"
 #include "fphdlimp.h"
-#include "gregoimp.h"
 #include "hebrwcal.h"
 #include "cstring.h"
 #include "uassert.h"
-#include "zstrfmt.h"
 #include "cmemory.h"
 #include "umutex.h"
-#include "smpdtfst.h"
 #include <float.h>
-
-#if defined( U_DEBUG_CALSVC ) || defined (U_DEBUG_CAL)
+#include "smpdtfst.h"
+#include "sharednumberformat.h"
+#include "ucasemap_imp.h"
+#include "ustr_imp.h"
+#include "charstr.h"
+#include "uvector.h"
+#include "cstr.h"
+#include "dayperiodrules.h"
+#include "tznames_impl.h"   // ZONE_NAME_U16_MAX
+#include "number_utypes.h"
+
+#define DEBUG_SYNTHETIC_TIMEFMTS 0
+
+#if defined( U_DEBUG_CALSVC ) || defined (U_DEBUG_CAL) || DEBUG_SYNTHETIC_TIMEFMTS
 #include <stdio.h>
 #endif
 
 
 U_NAMESPACE_BEGIN
 
-static const UChar PATTERN_CHAR_BASE = 0x40;
-
 /**
  * Last-resort string to use for "GMT" when constructing time zone strings.
  */
 // For time zones that have no names, use strings GMT+minutes and
 // GMT-minutes. For instance, in France the time zone is GMT+60.
 // Also accepted are GMT+H:MM or GMT-H:MM.
-static const UChar gGmt[]      = {0x0047, 0x004D, 0x0054, 0x0000};         // "GMT"
-static const UChar gGmtPlus[]  = {0x0047, 0x004D, 0x0054, 0x002B, 0x0000}; // "GMT+"
-static const UChar gGmtMinus[] = {0x0047, 0x004D, 0x0054, 0x002D, 0x0000}; // "GMT-"
-static const UChar gDefGmtPat[]       = {0x0047, 0x004D, 0x0054, 0x007B, 0x0030, 0x007D, 0x0000}; /* GMT{0} */
-static const UChar gDefGmtNegHmsPat[] = {0x002D, 0x0048, 0x0048, 0x003A, 0x006D, 0x006D, 0x003A, 0x0073, 0x0073, 0x0000}; /* -HH:mm:ss */
-static const UChar gDefGmtNegHmPat[]  = {0x002D, 0x0048, 0x0048, 0x003A, 0x006D, 0x006D, 0x0000}; /* -HH:mm */
-static const UChar gDefGmtPosHmsPat[] = {0x002B, 0x0048, 0x0048, 0x003A, 0x006D, 0x006D, 0x003A, 0x0073, 0x0073, 0x0000}; /* +HH:mm:ss */
-static const UChar gDefGmtPosHmPat[]  = {0x002B, 0x0048, 0x0048, 0x003A, 0x006D, 0x006D, 0x0000}; /* +HH:mm */
-static const UChar gUt[]       = {0x0055, 0x0054, 0x0000};  // "UT"
-static const UChar gUtc[]      = {0x0055, 0x0054, 0x0043, 0x0000};  // "UT"
+// Currently not being used
+//static const UChar gGmt[]      = {0x0047, 0x004D, 0x0054, 0x0000};         // "GMT"
+//static const UChar gGmtPlus[]  = {0x0047, 0x004D, 0x0054, 0x002B, 0x0000}; // "GMT+"
+//static const UChar gGmtMinus[] = {0x0047, 0x004D, 0x0054, 0x002D, 0x0000}; // "GMT-"
+//static const UChar gDefGmtPat[]       = {0x0047, 0x004D, 0x0054, 0x007B, 0x0030, 0x007D, 0x0000}; /* GMT{0} */
+//static const UChar gDefGmtNegHmsPat[] = {0x002D, 0x0048, 0x0048, 0x003A, 0x006D, 0x006D, 0x003A, 0x0073, 0x0073, 0x0000}; /* -HH:mm:ss */
+//static const UChar gDefGmtNegHmPat[]  = {0x002D, 0x0048, 0x0048, 0x003A, 0x006D, 0x006D, 0x0000}; /* -HH:mm */
+//static const UChar gDefGmtPosHmsPat[] = {0x002B, 0x0048, 0x0048, 0x003A, 0x006D, 0x006D, 0x003A, 0x0073, 0x0073, 0x0000}; /* +HH:mm:ss */
+//static const UChar gDefGmtPosHmPat[]  = {0x002B, 0x0048, 0x0048, 0x003A, 0x006D, 0x006D, 0x0000}; /* +HH:mm */
+//static const UChar gUt[]       = {0x0055, 0x0054, 0x0000};  // "UT"
+//static const UChar gUtc[]      = {0x0055, 0x0054, 0x0043, 0x0000};  // "UT"
 
 typedef enum GmtPatSize {
     kGmtLen = 3,
@@ -121,8 +139,10 @@ static const UDateFormatField kDateFields[] = {
     UDAT_STANDALONE_DAY_FIELD,
     UDAT_STANDALONE_MONTH_FIELD,
     UDAT_QUARTER_FIELD,
-    UDAT_STANDALONE_QUARTER_FIELD };
-static const int8_t kDateFieldsCount = 13;
+    UDAT_STANDALONE_QUARTER_FIELD,
+    UDAT_YEAR_NAME_FIELD,
+    UDAT_RELATED_YEAR_FIELD };
+static const int8_t kDateFieldsCount = 16;
 
 static const UDateFormatField kTimeFields[] = {
     UDAT_HOUR_OF_DAY1_FIELD,
@@ -133,8 +153,9 @@ static const UDateFormatField kTimeFields[] = {
     UDAT_HOUR1_FIELD,
     UDAT_HOUR0_FIELD,
     UDAT_MILLISECONDS_IN_DAY_FIELD,
-    UDAT_TIMEZONE_RFC_FIELD };
-static const int8_t kTimeFieldsCount = 9;
+    UDAT_TIMEZONE_RFC_FIELD,
+    UDAT_TIMEZONE_LOCALIZED_GMT_OFFSET_FIELD };
+static const int8_t kTimeFieldsCount = 10;
 
 
 // This is a pattern-of-last-resort used when we can't load a usable pattern out
@@ -153,9 +174,6 @@ static const UChar SUPPRESS_NEGATIVE_PREFIX[] = {0xAB00, 0};
  * These are the tags we expect to see in normal resource bundle files associated
  * with a locale.
  */
-static const char gDateTimePatternsTag[]="DateTimePatterns";
-
-static const UChar gEtcUTC[] = {0x45, 0x74, 0x63, 0x2F, 0x55, 0x54, 0x43, 0x00}; // "Etc/UTC"
 static const UChar QUOTE = 0x27; // Single quote
 
 /*
@@ -175,7 +193,7 @@ static const int32_t gFieldRangeBias[] = {
     -1,  // 'k' - UDAT_HOUR_OF_DAY1_FIELD
     -1,  // 'H' - UDAT_HOUR_OF_DAY0_FIELD
      0,  // 'm' - UDAT_MINUTE_FIELD
-     0,  // 's' - UDAT_SEOND_FIELD
+     0,  // 's' - UDAT_SECOND_FIELD
     -1,  // 'S' - UDAT_FRACTIONAL_SECOND_FIELD (0-999?)
     -1,  // 'E' - UDAT_DAY_OF_WEEK_FIELD (1-7?)
     -1,  // 'D' - UDAT_DAY_OF_YEAR_FIELD (1 - 366?)
@@ -197,37 +215,169 @@ static const int32_t gFieldRangeBias[] = {
      1,  // 'L' - UDAT_STANDALONE_MONTH_FIELD
     -1,  // 'Q' - UDAT_QUARTER_FIELD (1-4?)
     -1,  // 'q' - UDAT_STANDALONE_QUARTER_FIELD
-    -1   // 'V' - UDAT_TIMEZONE_SPECIAL_FIELD
+    -1,  // 'V' - UDAT_TIMEZONE_SPECIAL_FIELD
+    -1,  // 'U' - UDAT_YEAR_NAME_FIELD
+    -1,  // 'O' - UDAT_TIMEZONE_LOCALIZED_GMT_OFFSET_FIELD
+    -1,  // 'X' - UDAT_TIMEZONE_ISO_FIELD
+    -1,  // 'x' - UDAT_TIMEZONE_ISO_LOCAL_FIELD
+    -1,  // 'r' - UDAT_RELATED_YEAR_FIELD
+#if UDAT_HAS_PATTERN_CHAR_FOR_TIME_SEPARATOR
+    -1,  // ':' - UDAT_TIME_SEPARATOR_FIELD
+#else
+    -1,  // (no pattern character currently) - UDAT_TIME_SEPARATOR_FIELD
+#endif
+};
+// A slightly looser range check for lenient parsing
+static const int32_t gFieldRangeBiasLenient[] = {
+    -1,  // 'G' - UDAT_ERA_FIELD
+    -1,  // 'y' - UDAT_YEAR_FIELD
+     8,  // 'M' - UDAT_MONTH_FIELD (allow calendar max + 7, e.g. 19 for grego 1-based month)
+    18,  // 'd' - UDAT_DATE_FIELD (allow calendar max + 18, e.g. 49 for grego; tests require at least 40 for grego)
+    -1,  // 'k' - UDAT_HOUR_OF_DAY1_FIELD
+    -1,  // 'H' - UDAT_HOUR_OF_DAY0_FIELD
+    40,  // 'm' - UDAT_MINUTE_FIELD (allow calendar max + 40, e.g. 99)
+    40,  // 's' - UDAT_SECOND_FIELD (allow calendar max + 40, e.g. 99)
+    -1,  // 'S' - UDAT_FRACTIONAL_SECOND_FIELD (0-999?)
+    -1,  // 'E' - UDAT_DAY_OF_WEEK_FIELD (1-7?)
+    -1,  // 'D' - UDAT_DAY_OF_YEAR_FIELD (1 - 366?)
+    -1,  // 'F' - UDAT_DAY_OF_WEEK_IN_MONTH_FIELD (1-5?)
+    -1,  // 'w' - UDAT_WEEK_OF_YEAR_FIELD (1-52?)
+    -1,  // 'W' - UDAT_WEEK_OF_MONTH_FIELD (1-5?)
+    -1,  // 'a' - UDAT_AM_PM_FIELD
+    -1,  // 'h' - UDAT_HOUR1_FIELD
+    -1,  // 'K' - UDAT_HOUR0_FIELD
+    -1,  // 'z' - UDAT_TIMEZONE_FIELD
+    -1,  // 'Y' - UDAT_YEAR_WOY_FIELD
+    -1,  // 'e' - UDAT_DOW_LOCAL_FIELD
+    -1,  // 'u' - UDAT_EXTENDED_YEAR_FIELD
+    -1,  // 'g' - UDAT_JULIAN_DAY_FIELD
+    -1,  // 'A' - UDAT_MILLISECONDS_IN_DAY_FIELD
+    -1,  // 'Z' - UDAT_TIMEZONE_RFC_FIELD
+    -1,  // 'v' - UDAT_TIMEZONE_GENERIC_FIELD
+    18,  // 'c' - UDAT_STANDALONE_DAY_FIELD (allow calendar max + 18, e.g. 49 for grego)
+     8,  // 'L' - UDAT_STANDALONE_MONTH_FIELD (allow calendar max + 7, e.g. 19 for grego 1-based month)
+    -1,  // 'Q' - UDAT_QUARTER_FIELD (1-4?)
+    -1,  // 'q' - UDAT_STANDALONE_QUARTER_FIELD
+    -1,  // 'V' - UDAT_TIMEZONE_SPECIAL_FIELD
+    -1,  // 'U' - UDAT_YEAR_NAME_FIELD
+    -1,  // 'O' - UDAT_TIMEZONE_LOCALIZED_GMT_OFFSET_FIELD
+    -1,  // 'X' - UDAT_TIMEZONE_ISO_FIELD
+    -1,  // 'x' - UDAT_TIMEZONE_ISO_LOCAL_FIELD
+    -1,  // 'r' - UDAT_RELATED_YEAR_FIELD
+#if UDAT_HAS_PATTERN_CHAR_FOR_TIME_SEPARATOR
+    -1,  // ':' - UDAT_TIME_SEPARATOR_FIELD
+#else
+    -1,  // (no pattern character currently) - UDAT_TIME_SEPARATOR_FIELD
+#endif
 };
 
-static UMTX LOCK;
+// When calendar uses hebr numbering (i.e. he@calendar=hebrew),
+// offset the years within the current millenium down to 1-999
+static const int32_t HEBREW_CAL_CUR_MILLENIUM_START_YEAR = 5000;
+static const int32_t HEBREW_CAL_CUR_MILLENIUM_END_YEAR = 6000;
+
+static UMutex *LOCK() {
+    static UMutex *m = STATIC_NEW(UMutex);
+    return m;
+}
 
 UOBJECT_DEFINE_RTTI_IMPLEMENTATION(SimpleDateFormat)
 
+SimpleDateFormat::NSOverride::~NSOverride() {
+    if (snf != NULL) {
+        snf->removeRef();
+    }
+}
+
+
+void SimpleDateFormat::NSOverride::free() {
+    NSOverride *cur = this;
+    while (cur) {
+        NSOverride *next_temp = cur->next;
+        delete cur;
+        cur = next_temp;
+    }
+}
+
+// no matter what the locale's default number format looked like, we want
+// to modify it so that it doesn't use thousands separators, doesn't always
+// show the decimal point, and recognizes integers only when parsing
+static void fixNumberFormatForDates(NumberFormat &nf) {
+    // Use new group setter equivalent to
+    //    setGroupingUsed(FALSE);
+    //    setDecimalSeparatorAlwaysShown(FALSE);
+    //    setParseIntegerOnly(TRUE);
+    //    setMinimumFractionDigits(0); // To prevent "Jan 1.00, 1997.00"
+    nf.setDateSettings(); // Apple rdar://50064762
+}
+
+static const SharedNumberFormat *createSharedNumberFormat(
+        NumberFormat *nfToAdopt) {
+    fixNumberFormatForDates(*nfToAdopt);
+    const SharedNumberFormat *result = new SharedNumberFormat(nfToAdopt);
+    if (result == NULL) {
+        delete nfToAdopt;
+    }
+    return result;
+}
+
+static const SharedNumberFormat *createSharedNumberFormat(
+        const Locale &loc, UErrorCode &status) {
+    NumberFormat *nf = NumberFormat::createInstance(loc, status);
+    if (U_FAILURE(status)) {
+        return NULL;
+    }
+    const SharedNumberFormat *result = createSharedNumberFormat(nf);
+    if (result == NULL) {
+        status = U_MEMORY_ALLOCATION_ERROR;
+    }
+    return result;
+}
+
+static const SharedNumberFormat **allocSharedNumberFormatters() {
+    const SharedNumberFormat **result = (const SharedNumberFormat**)
+            uprv_malloc(UDAT_FIELD_COUNT * sizeof(const SharedNumberFormat*));
+    if (result == NULL) {
+        return NULL;
+    }
+    for (int32_t i = 0; i < UDAT_FIELD_COUNT; ++i) {
+        result[i] = NULL;
+    }
+    return result;
+}
+
+static void freeSharedNumberFormatters(const SharedNumberFormat ** list) {
+    for (int32_t i = 0; i < UDAT_FIELD_COUNT; ++i) {
+        SharedObject::clearPtr(list[i]);
+    }
+    uprv_free(list);
+}
+
+const NumberFormat *SimpleDateFormat::getNumberFormatByIndex(
+        UDateFormatField index) const {
+    if (fSharedNumberFormatters == NULL ||
+        fSharedNumberFormatters[index] == NULL) {
+        return fNumberFormat;
+    }
+    return &(**fSharedNumberFormatters[index]);
+}
+
 //----------------------------------------------------------------------
 
 SimpleDateFormat::~SimpleDateFormat()
 {
     delete fSymbols;
-    if (fGMTFormatters) {
-        for (int32_t i = 0; i < kNumGMTFormatters; i++) {
-            if (fGMTFormatters[i]) {
-                delete fGMTFormatters[i];
-            }
-        }
-        uprv_free(fGMTFormatters);
-
+    if (fSharedNumberFormatters) {
+        freeSharedNumberFormatters(fSharedNumberFormatters);
     }
-    if (fNumberFormatters) {
-        uprv_free(fNumberFormatters);
+    if (fTimeZoneFormat) {
+        delete fTimeZoneFormat;
     }
+    freeFastNumberFormatters();
 
-    while (fOverrideList) {
-        NSOverride *cur = fOverrideList;
-        fOverrideList = cur->next;
-        delete cur->nf;
-        uprv_free(cur);
-    }
+#if !UCONFIG_NO_BREAK_ITERATION
+    delete fCapitalizationBrkIter;
+#endif
 }
 
 //----------------------------------------------------------------------
@@ -235,10 +385,11 @@ SimpleDateFormat::~SimpleDateFormat()
 SimpleDateFormat::SimpleDateFormat(UErrorCode& status)
   :   fLocale(Locale::getDefault()),
       fSymbols(NULL),
-      fGMTFormatters(NULL),
-      fNumberFormatters(NULL),
-      fOverrideList(NULL)
+      fTimeZoneFormat(NULL),
+      fSharedNumberFormatters(NULL),
+      fCapitalizationBrkIter(NULL)
 {
+    initializeBooleanAttributes();
     construct(kShort, (EStyle) (kShort + kDateOffset), fLocale, status);
     initializeDefaultCentury();
 }
@@ -250,17 +401,20 @@ SimpleDateFormat::SimpleDateFormat(const UnicodeString& pattern,
 :   fPattern(pattern),
     fLocale(Locale::getDefault()),
     fSymbols(NULL),
-    fGMTFormatters(NULL),
-    fNumberFormatters(NULL),
-    fOverrideList(NULL)
+    fTimeZoneFormat(NULL),
+    fSharedNumberFormatters(NULL),
+    fCapitalizationBrkIter(NULL)
 {
     fDateOverride.setToBogus();
     fTimeOverride.setToBogus();
-    initializeSymbols(fLocale, initializeCalendar(NULL,fLocale,status), status);
+    initializeBooleanAttributes();
+    initializeCalendar(NULL,fLocale,status);
+    fSymbols = DateFormatSymbols::createForLocale(fLocale, status);
     initialize(fLocale, status);
     initializeDefaultCentury();
 
 }
+
 //----------------------------------------------------------------------
 
 SimpleDateFormat::SimpleDateFormat(const UnicodeString& pattern,
@@ -269,13 +423,15 @@ SimpleDateFormat::SimpleDateFormat(const UnicodeString& pattern,
 :   fPattern(pattern),
     fLocale(Locale::getDefault()),
     fSymbols(NULL),
-    fGMTFormatters(NULL),
-    fNumberFormatters(NULL),
-    fOverrideList(NULL)
+    fTimeZoneFormat(NULL),
+    fSharedNumberFormatters(NULL),
+    fCapitalizationBrkIter(NULL)
 {
     fDateOverride.setTo(override);
     fTimeOverride.setToBogus();
-    initializeSymbols(fLocale, initializeCalendar(NULL,fLocale,status), status);
+    initializeBooleanAttributes();
+    initializeCalendar(NULL,fLocale,status);
+    fSymbols = DateFormatSymbols::createForLocale(fLocale, status);
     initialize(fLocale, status);
     initializeDefaultCentury();
 
@@ -290,15 +446,17 @@ SimpleDateFormat::SimpleDateFormat(const UnicodeString& pattern,
                                    UErrorCode& status)
 :   fPattern(pattern),
     fLocale(locale),
-    fGMTFormatters(NULL),
-    fNumberFormatters(NULL),
-    fOverrideList(NULL)
+    fTimeZoneFormat(NULL),
+    fSharedNumberFormatters(NULL),
+    fCapitalizationBrkIter(NULL)
 {
 
     fDateOverride.setToBogus();
     fTimeOverride.setToBogus();
+    initializeBooleanAttributes();
 
-    initializeSymbols(fLocale, initializeCalendar(NULL,fLocale,status), status);
+    initializeCalendar(NULL,fLocale,status);
+    fSymbols = DateFormatSymbols::createForLocale(fLocale, status);
     initialize(fLocale, status);
     initializeDefaultCentury();
 }
@@ -311,15 +469,17 @@ SimpleDateFormat::SimpleDateFormat(const UnicodeString& pattern,
                                    UErrorCode& status)
 :   fPattern(pattern),
     fLocale(locale),
-    fGMTFormatters(NULL),
-    fNumberFormatters(NULL),
-    fOverrideList(NULL)
+    fTimeZoneFormat(NULL),
+    fSharedNumberFormatters(NULL),
+    fCapitalizationBrkIter(NULL)
 {
 
     fDateOverride.setTo(override);
     fTimeOverride.setToBogus();
+    initializeBooleanAttributes();
 
-    initializeSymbols(fLocale, initializeCalendar(NULL,fLocale,status), status);
+    initializeCalendar(NULL,fLocale,status);
+    fSymbols = DateFormatSymbols::createForLocale(fLocale, status);
     initialize(fLocale, status);
     initializeDefaultCentury();
 
@@ -335,13 +495,14 @@ SimpleDateFormat::SimpleDateFormat(const UnicodeString& pattern,
 :   fPattern(pattern),
     fLocale(Locale::getDefault()),
     fSymbols(symbolsToAdopt),
-    fGMTFormatters(NULL),
-    fNumberFormatters(NULL),
-    fOverrideList(NULL)
+    fTimeZoneFormat(NULL),
+    fSharedNumberFormatters(NULL),
+    fCapitalizationBrkIter(NULL)
 {
 
     fDateOverride.setToBogus();
     fTimeOverride.setToBogus();
+    initializeBooleanAttributes();
 
     initializeCalendar(NULL,fLocale,status);
     initialize(fLocale, status);
@@ -356,13 +517,14 @@ SimpleDateFormat::SimpleDateFormat(const UnicodeString& pattern,
 :   fPattern(pattern),
     fLocale(Locale::getDefault()),
     fSymbols(new DateFormatSymbols(symbols)),
-    fGMTFormatters(NULL),
-    fNumberFormatters(NULL),
-    fOverrideList(NULL)
+    fTimeZoneFormat(NULL),
+    fSharedNumberFormatters(NULL),
+    fCapitalizationBrkIter(NULL)
 {
 
     fDateOverride.setToBogus();
     fTimeOverride.setToBogus();
+    initializeBooleanAttributes();
 
     initializeCalendar(NULL, fLocale, status);
     initialize(fLocale, status);
@@ -378,10 +540,11 @@ SimpleDateFormat::SimpleDateFormat(EStyle timeStyle,
                                    UErrorCode& status)
 :   fLocale(locale),
     fSymbols(NULL),
-    fGMTFormatters(NULL),
-    fNumberFormatters(NULL),
-    fOverrideList(NULL)
+    fTimeZoneFormat(NULL),
+    fSharedNumberFormatters(NULL),
+    fCapitalizationBrkIter(NULL)
 {
+    initializeBooleanAttributes();
     construct(timeStyle, dateStyle, fLocale, status);
     if(U_SUCCESS(status)) {
       initializeDefaultCentury();
@@ -400,12 +563,14 @@ SimpleDateFormat::SimpleDateFormat(const Locale& locale,
 :   fPattern(gDefaultPattern),
     fLocale(locale),
     fSymbols(NULL),
-    fGMTFormatters(NULL),
-    fNumberFormatters(NULL),
-    fOverrideList(NULL)
+    fTimeZoneFormat(NULL),
+    fSharedNumberFormatters(NULL),
+    fCapitalizationBrkIter(NULL)
 {
     if (U_FAILURE(status)) return;
-    initializeSymbols(fLocale, initializeCalendar(NULL, fLocale, status),status);
+    initializeBooleanAttributes();
+    initializeCalendar(NULL, fLocale, status);
+    fSymbols = DateFormatSymbols::createForLocale(fLocale, status);
     if (U_FAILURE(status))
     {
         status = U_ZERO_ERROR;
@@ -432,11 +597,13 @@ SimpleDateFormat::SimpleDateFormat(const Locale& locale,
 
 SimpleDateFormat::SimpleDateFormat(const SimpleDateFormat& other)
 :   DateFormat(other),
+    fLocale(other.fLocale),
     fSymbols(NULL),
-    fGMTFormatters(NULL),
-    fNumberFormatters(NULL),
-    fOverrideList(NULL)
+    fTimeZoneFormat(NULL),
+    fSharedNumberFormatters(NULL),
+    fCapitalizationBrkIter(NULL)
 {
+    initializeBooleanAttributes();
     *this = other;
 }
 
@@ -447,7 +614,10 @@ SimpleDateFormat& SimpleDateFormat::operator=(const SimpleDateFormat& other)
     if (this == &other) {
         return *this;
     }
+    freeFastNumberFormatters(); // deletes refs to fNumberFormat's symbols
     DateFormat::operator=(other);
+    fDateOverride = other.fDateOverride;
+    fTimeOverride = other.fTimeOverride;
 
     delete fSymbols;
     fSymbols = NULL;
@@ -460,6 +630,41 @@ SimpleDateFormat& SimpleDateFormat::operator=(const SimpleDateFormat& other)
     fHaveDefaultCentury          = other.fHaveDefaultCentury;
 
     fPattern = other.fPattern;
+    fHasMinute = other.fHasMinute;
+    fHasSecond = other.fHasSecond;
+
+    fLocale = other.fLocale;
+    // TimeZoneFormat can now be set independently via setter.
+    // If it is NULL, it will be lazily initialized from locale
+    delete fTimeZoneFormat;
+    fTimeZoneFormat = NULL;
+    if (other.fTimeZoneFormat) {
+        fTimeZoneFormat = new TimeZoneFormat(*other.fTimeZoneFormat);
+    }
+
+#if !UCONFIG_NO_BREAK_ITERATION
+    if (other.fCapitalizationBrkIter != NULL) {
+        fCapitalizationBrkIter = (other.fCapitalizationBrkIter)->clone();
+    }
+#endif
+
+    if (fSharedNumberFormatters != NULL) {
+        freeSharedNumberFormatters(fSharedNumberFormatters);
+        fSharedNumberFormatters = NULL;
+    }
+    if (other.fSharedNumberFormatters != NULL) {
+        fSharedNumberFormatters = allocSharedNumberFormatters();
+        if (fSharedNumberFormatters) {
+            for (int32_t i = 0; i < UDAT_FIELD_COUNT; ++i) {
+                SharedObject::copyPtr(
+                        other.fSharedNumberFormatters[i],
+                        fSharedNumberFormatters[i]);
+            }
+        }
+    }
+
+    UErrorCode localStatus = U_ZERO_ERROR;
+    initFastNumberFormatters(localStatus);
 
     return *this;
 }
@@ -478,6 +683,8 @@ UBool
 SimpleDateFormat::operator==(const Format& other) const
 {
     if (DateFormat::operator==(other)) {
+        // The DateFormat::operator== check for fCapitalizationContext equality above
+        //   is sufficient to check equality of all derived context-related data.
         // DateFormat::operator== guarantees following cast is safe
         SimpleDateFormat* that = (SimpleDateFormat*)&other;
         return (fPattern             == that->fPattern &&
@@ -485,12 +692,27 @@ SimpleDateFormat::operator==(const Format& other) const
                 that->fSymbols       != NULL && // Check for pathological object
                 *fSymbols            == *that->fSymbols &&
                 fHaveDefaultCentury  == that->fHaveDefaultCentury &&
-                fDefaultCenturyStart == that->fDefaultCenturyStart);
+                fDefaultCenturyStart == that->fDefaultCenturyStart &&
+                // Check fTimeZoneFormat, it can be set independently via setter
+                ((fTimeZoneFormat == NULL && that->fTimeZoneFormat == NULL) ||
+                 (fTimeZoneFormat != NULL && that->fTimeZoneFormat != NULL && *fTimeZoneFormat == *that->fTimeZoneFormat)) &&
+                // Check override strings (these also indicate any relevant
+                // differences in fNumberFormatters, fOverrideList)
+                fDateOverride        == that->fDateOverride &&
+                fTimeOverride        == that->fTimeOverride);
     }
     return FALSE;
 }
 
 //----------------------------------------------------------------------
+static const UChar* timeSkeletons[4] = {
+    u"jmmsszzzz",   // kFull
+    u"jmmssz",      // kLong
+    u"jmmss",       // kMedium
+    u"jmm",         // kShort
+};
+
+enum { kBaseNameMax = ULOC_LANG_CAPACITY + ULOC_SCRIPT_CAPACITY + ULOC_COUNTRY_CAPACITY }; // includes separators and 0 term
 
 void SimpleDateFormat::construct(EStyle timeStyle,
                                  EStyle dateStyle,
@@ -504,23 +726,45 @@ void SimpleDateFormat::construct(EStyle timeStyle,
     initializeCalendar(NULL, locale, status);
     if (U_FAILURE(status)) return;
 
-    CalendarData calData(locale, fCalendar?fCalendar->getType():NULL, status);
-    UResourceBundle *dateTimePatterns = calData.getByKey(gDateTimePatternsTag, status);
-    UResourceBundle *currentBundle;
+    // Load date time patterns directly from resources.
+    const char* cType = fCalendar ? fCalendar->getType() : NULL;
+    LocalUResourceBundlePointer bundle(ures_open(NULL, locale.getBaseName(), &status));
+    if (U_FAILURE(status)) return;
+
+    UBool cTypeIsGregorian = TRUE;
+    LocalUResourceBundlePointer dateTimePatterns;
+    if (cType != NULL && uprv_strcmp(cType, "gregorian") != 0) {
+        CharString resourcePath("calendar/", status);
+        resourcePath.append(cType, status).append("/DateTimePatterns", status);
+        dateTimePatterns.adoptInstead(
+            ures_getByKeyWithFallback(bundle.getAlias(), resourcePath.data(),
+                                      (UResourceBundle*)NULL, &status));
+        cTypeIsGregorian = FALSE;
+    }
 
+    // Check for "gregorian" fallback.
+    if (cTypeIsGregorian || status == U_MISSING_RESOURCE_ERROR) {
+        status = U_ZERO_ERROR;
+        dateTimePatterns.adoptInstead(
+            ures_getByKeyWithFallback(bundle.getAlias(),
+                                      "calendar/gregorian/DateTimePatterns",
+                                      (UResourceBundle*)NULL, &status));
+    }
     if (U_FAILURE(status)) return;
 
-    if (ures_getSize(dateTimePatterns) <= kDateTime)
+    LocalUResourceBundlePointer currentBundle;
+
+    if (ures_getSize(dateTimePatterns.getAlias()) <= kDateTime)
     {
         status = U_INVALID_FORMAT_ERROR;
         return;
     }
 
-    setLocaleIDs(ures_getLocaleByType(dateTimePatterns, ULOC_VALID_LOCALE, &status),
-                 ures_getLocaleByType(dateTimePatterns, ULOC_ACTUAL_LOCALE, &status));
+    setLocaleIDs(ures_getLocaleByType(dateTimePatterns.getAlias(), ULOC_VALID_LOCALE, &status),
+                 ures_getLocaleByType(dateTimePatterns.getAlias(), ULOC_ACTUAL_LOCALE, &status));
 
     // create a symbols object from the locale
-    initializeSymbols(locale,fCalendar, status);
+    fSymbols = DateFormatSymbols::createForLocale(locale, status);
     if (U_FAILURE(status)) return;
     /* test for NULL */
     if (fSymbols == 0) {
@@ -533,146 +777,171 @@ void SimpleDateFormat::construct(EStyle timeStyle,
     fDateOverride.setToBogus();
     fTimeOverride.setToBogus();
 
+    UnicodeString timePattern;
+    if (timeStyle >= kFull && timeStyle <= kShort) {
+        const char* baseLoc = locale.getBaseName();
+        if (baseLoc!=NULL && baseLoc[0]!=0 && uprv_strcmp(baseLoc,"und")!=0) {
+            UErrorCode useStatus = U_ZERO_ERROR;
+            const char* validLoc = getLocaleID(ULOC_VALID_LOCALE, useStatus);
+            if (U_SUCCESS(useStatus) && uprv_strcmp(validLoc,baseLoc)!=0) {
+                char minLoc[kBaseNameMax];
+                uloc_minimizeSubtags(baseLoc, minLoc, kBaseNameMax, &useStatus);
+                minLoc[kBaseNameMax-1] = 0; // ensure zero term
+                const char* actualLoc = getLocaleID(ULOC_ACTUAL_LOCALE, useStatus);
+                if (U_SUCCESS(useStatus) && uprv_strcmp(actualLoc,minLoc)!=0) {
+                    // The standard time formats may have the wrong time cycle, because:
+                    // * the valid locale is not the same as the base locale, or
+                    // * the actual locale the patterns are coming from is not the same
+                    //   as the minimized locale.
+                    // We could *also* check whether they do actually have a mismatch with
+                    // the time cycle preferences for the region, but that is a lot more
+                    // work for little or no additional benefit, since just going ahead
+                    // and always synthesizing the time format as per the following should
+                    // create a locale-appropriate pattern with cycle that matches the
+                    // region preferences anyway (for completely unsupported languages,
+                    // this will use root patterns for the appropriate cycle for the
+                    // likely subtags resion).
+                    LocalPointer<DateTimePatternGenerator> dtpg(DateTimePatternGenerator::createInstance(locale, useStatus, TRUE));
+                    if (U_SUCCESS(useStatus)) {
+                        UnicodeString timeSkeleton(TRUE, timeSkeletons[timeStyle], -1);
+                        timePattern = dtpg->getBestPattern(timeSkeleton, useStatus);
+#if DEBUG_SYNTHETIC_TIMEFMTS
+                        if (timePattern.length() != 0) {
+                            char bbuf[32];
+                            timePattern.extract(0,timePattern.length(),bbuf,32);
+                            printf("\n## for locale %s, validLoc %s, minLoc %s, actualLoc %s, synth timePat %s\n", locale.getName(), validLoc, minLoc, actualLoc, bbuf);
+                        }
+#endif
+                    }
+                }
+            }
+        }
+    }
+
     // if the pattern should include both date and time information, use the date/time
     // pattern string as a guide to tell use how to glue together the appropriate date
-    // and time pattern strings.  The actual gluing-together is handled by a convenience
-    // method on MessageFormat.
+    // and time pattern strings.
     if ((timeStyle != kNone) && (dateStyle != kNone))
     {
-        Formattable timeDateArray[2];
-
-        // use Formattable::adoptString() so that we can use fastCopyFrom()
-        // instead of Formattable::setString()'s unaware, safe, deep string clone
-        // see Jitterbug 2296
-
-        currentBundle = ures_getByIndex(dateTimePatterns, (int32_t)timeStyle, NULL, &status);
-        if (U_FAILURE(status)) {
-           status = U_INVALID_FORMAT_ERROR;
-           return;
-        }
-        switch (ures_getType(currentBundle)) {
-            case URES_STRING: {
-               resStr = ures_getString(currentBundle, &resStrLen, &status);
-               break;
-            }
-            case URES_ARRAY: {
-               resStr = ures_getStringByIndex(currentBundle, 0, &resStrLen, &status);
-               ovrStr = ures_getStringByIndex(currentBundle, 1, &ovrStrLen, &status);
-               fTimeOverride.setTo(TRUE, ovrStr, ovrStrLen);
-               break;
-            }
-            default: {
+        UnicodeString tempus1(timePattern);
+        if (tempus1.length() == 0) {
+            currentBundle.adoptInstead(
+                    ures_getByIndex(dateTimePatterns.getAlias(), (int32_t)timeStyle, NULL, &status));
+            if (U_FAILURE(status)) {
                status = U_INVALID_FORMAT_ERROR;
-               ures_close(currentBundle);
                return;
             }
-        }
-        ures_close(currentBundle);
+            switch (ures_getType(currentBundle.getAlias())) {
+                case URES_STRING: {
+                   resStr = ures_getString(currentBundle.getAlias(), &resStrLen, &status);
+                   break;
+                }
+                case URES_ARRAY: {
+                   resStr = ures_getStringByIndex(currentBundle.getAlias(), 0, &resStrLen, &status);
+                   ovrStr = ures_getStringByIndex(currentBundle.getAlias(), 1, &ovrStrLen, &status);
+                   fTimeOverride.setTo(TRUE, ovrStr, ovrStrLen);
+                   break;
+                }
+                default: {
+                   status = U_INVALID_FORMAT_ERROR;
+                   return;
+                }
+            }
 
-        UnicodeString *tempus1 = new UnicodeString(TRUE, resStr, resStrLen);
-        // NULL pointer check
-        if (tempus1 == NULL) {
-            status = U_MEMORY_ALLOCATION_ERROR;
-            return;
+            tempus1.setTo(TRUE, resStr, resStrLen);
         }
-        timeDateArray[0].adoptString(tempus1);
 
-        currentBundle = ures_getByIndex(dateTimePatterns, (int32_t)dateStyle, NULL, &status);
+        currentBundle.adoptInstead(
+                ures_getByIndex(dateTimePatterns.getAlias(), (int32_t)dateStyle, NULL, &status));
         if (U_FAILURE(status)) {
            status = U_INVALID_FORMAT_ERROR;
            return;
         }
-        switch (ures_getType(currentBundle)) {
+        switch (ures_getType(currentBundle.getAlias())) {
             case URES_STRING: {
-               resStr = ures_getString(currentBundle, &resStrLen, &status);
+               resStr = ures_getString(currentBundle.getAlias(), &resStrLen, &status);
                break;
             }
             case URES_ARRAY: {
-               resStr = ures_getStringByIndex(currentBundle, 0, &resStrLen, &status);
-               ovrStr = ures_getStringByIndex(currentBundle, 1, &ovrStrLen, &status);
+               resStr = ures_getStringByIndex(currentBundle.getAlias(), 0, &resStrLen, &status);
+               ovrStr = ures_getStringByIndex(currentBundle.getAlias(), 1, &ovrStrLen, &status);
                fDateOverride.setTo(TRUE, ovrStr, ovrStrLen);
                break;
             }
             default: {
                status = U_INVALID_FORMAT_ERROR;
-               ures_close(currentBundle);
                return;
             }
         }
-        ures_close(currentBundle);
 
-        UnicodeString *tempus2 = new UnicodeString(TRUE, resStr, resStrLen);
-        // Null pointer check
-        if (tempus2 == NULL) {
-            status = U_MEMORY_ALLOCATION_ERROR;
-            return;
-        }
-        timeDateArray[1].adoptString(tempus2);
+        UnicodeString tempus2(TRUE, resStr, resStrLen);
 
         int32_t glueIndex = kDateTime;
-        int32_t patternsSize = ures_getSize(dateTimePatterns);
+        int32_t patternsSize = ures_getSize(dateTimePatterns.getAlias());
         if (patternsSize >= (kDateTimeOffset + kShort + 1)) {
             // Get proper date time format
             glueIndex = (int32_t)(kDateTimeOffset + (dateStyle - kDateOffset));
         }
 
-        resStr = ures_getStringByIndex(dateTimePatterns, glueIndex, &resStrLen, &status);
-        MessageFormat::format(UnicodeString(TRUE, resStr, resStrLen), timeDateArray, 2, fPattern, status);
+        resStr = ures_getStringByIndex(dateTimePatterns.getAlias(), glueIndex, &resStrLen, &status);
+        SimpleFormatter(UnicodeString(TRUE, resStr, resStrLen), 2, 2, status).
+                format(tempus1, tempus2, fPattern, status);
     }
     // if the pattern includes just time data or just date date, load the appropriate
     // pattern string from the resources
     // setTo() - see DateFormatSymbols::assignArray comments
     else if (timeStyle != kNone) {
-        currentBundle = ures_getByIndex(dateTimePatterns, (int32_t)timeStyle, NULL, &status);
-        if (U_FAILURE(status)) {
-           status = U_INVALID_FORMAT_ERROR;
-           return;
-        }
-        switch (ures_getType(currentBundle)) {
-            case URES_STRING: {
-               resStr = ures_getString(currentBundle, &resStrLen, &status);
-               break;
-            }
-            case URES_ARRAY: {
-               resStr = ures_getStringByIndex(currentBundle, 0, &resStrLen, &status);
-               ovrStr = ures_getStringByIndex(currentBundle, 1, &ovrStrLen, &status);
-               fDateOverride.setTo(TRUE, ovrStr, ovrStrLen);
-               break;
-            }
-            default: {
+        fPattern.setTo(timePattern);
+        if (fPattern.length() == 0) {
+            currentBundle.adoptInstead(
+                    ures_getByIndex(dateTimePatterns.getAlias(), (int32_t)timeStyle, NULL, &status));
+            if (U_FAILURE(status)) {
                status = U_INVALID_FORMAT_ERROR;
-                ures_close(currentBundle);
                return;
             }
+            switch (ures_getType(currentBundle.getAlias())) {
+                case URES_STRING: {
+                   resStr = ures_getString(currentBundle.getAlias(), &resStrLen, &status);
+                   break;
+                }
+                case URES_ARRAY: {
+                   resStr = ures_getStringByIndex(currentBundle.getAlias(), 0, &resStrLen, &status);
+                   ovrStr = ures_getStringByIndex(currentBundle.getAlias(), 1, &ovrStrLen, &status);
+                   fDateOverride.setTo(TRUE, ovrStr, ovrStrLen);
+                   break;
+                }
+                default: {
+                   status = U_INVALID_FORMAT_ERROR;
+                   return;
+                }
+            }
+            fPattern.setTo(TRUE, resStr, resStrLen);
         }
-        fPattern.setTo(TRUE, resStr, resStrLen);
-        ures_close(currentBundle);
     }
     else if (dateStyle != kNone) {
-        currentBundle = ures_getByIndex(dateTimePatterns, (int32_t)dateStyle, NULL, &status);
+        currentBundle.adoptInstead(
+                ures_getByIndex(dateTimePatterns.getAlias(), (int32_t)dateStyle, NULL, &status));
         if (U_FAILURE(status)) {
            status = U_INVALID_FORMAT_ERROR;
            return;
         }
-        switch (ures_getType(currentBundle)) {
+        switch (ures_getType(currentBundle.getAlias())) {
             case URES_STRING: {
-               resStr = ures_getString(currentBundle, &resStrLen, &status);
+               resStr = ures_getString(currentBundle.getAlias(), &resStrLen, &status);
                break;
             }
             case URES_ARRAY: {
-               resStr = ures_getStringByIndex(currentBundle, 0, &resStrLen, &status);
-               ovrStr = ures_getStringByIndex(currentBundle, 1, &ovrStrLen, &status);
+               resStr = ures_getStringByIndex(currentBundle.getAlias(), 0, &resStrLen, &status);
+               ovrStr = ures_getStringByIndex(currentBundle.getAlias(), 1, &ovrStrLen, &status);
                fDateOverride.setTo(TRUE, ovrStr, ovrStrLen);
                break;
             }
             default: {
                status = U_INVALID_FORMAT_ERROR;
-               ures_close(currentBundle);
                return;
             }
         }
         fPattern.setTo(TRUE, resStr, resStrLen);
-        ures_close(currentBundle);
     }
 
     // and if it includes _neither_, that's an error
@@ -691,55 +960,50 @@ SimpleDateFormat::initializeCalendar(TimeZone* adoptZone, const Locale& locale,
     if(!U_FAILURE(status)) {
         fCalendar = Calendar::createInstance(adoptZone?adoptZone:TimeZone::createDefault(), locale, status);
     }
-    if (U_SUCCESS(status) && fCalendar == NULL) {
-        status = U_MEMORY_ALLOCATION_ERROR;
-    }
     return fCalendar;
 }
 
-void
-SimpleDateFormat::initializeSymbols(const Locale& locale, Calendar* calendar, UErrorCode& status)
-{
-  if(U_FAILURE(status)) {
-    fSymbols = NULL;
-  } else {
-    // pass in calendar type - use NULL (default) if no calendar set (or err).
-    fSymbols = new DateFormatSymbols(locale, calendar?calendar->getType() :NULL , status);
-    // Null pointer check
-    if (fSymbols == NULL) {
-        status = U_MEMORY_ALLOCATION_ERROR;
-        return;
-    }
-  }
-}
-
 void
 SimpleDateFormat::initialize(const Locale& locale,
                              UErrorCode& status)
 {
     if (U_FAILURE(status)) return;
 
+    parsePattern(); // Need this before initNumberFormatters(), to set fHasHanYearChar
+
+    // If the locale has @[....]numbers=hanidays we want to *delete* that (so it
+    // it is not used for every field) and then set fDateOverride to "d=hanidays"
+    // (as with std formats for zh@calendar=chinese) to use hanidays for d field.
+    static const UChar hanidaysOverride[] = {0x64,0x3D,0x68,0x61,0x6E,0x69,0x64,0x61,0x79,0x73,0}; // "d=hanidays"
+    char numbersValue[ULOC_KEYWORDS_CAPACITY];
+    UErrorCode numbersStatus = U_ZERO_ERROR;
+    Locale localeNoHanidays(locale);
+    int32_t numbersLen = localeNoHanidays.getKeywordValue("numbers", numbersValue, ULOC_KEYWORDS_CAPACITY, numbersStatus);
+    if ( U_SUCCESS(numbersStatus) && numbersLen > 0 ) {
+        if ( uprv_strcmp(numbersValue, "hanidays") == 0 ) {
+            localeNoHanidays.setKeywordValue("numbers", NULL, numbersStatus);
+            fDateOverride.setTo(hanidaysOverride,-1);
+        }
+    }
+    // Simple-minded hack to force Gannen year numbering for ja@calendar=japanese
+    // if format is non-numeric (includes 年) and fDateOverride is not already specified.
+    // Now this does get updated if applyPattern subsequently changes the pattern type.
+    if (fDateOverride.isBogus() && fHasHanYearChar &&
+            fCalendar != nullptr && uprv_strcmp(fCalendar->getType(),"japanese") == 0 &&
+            uprv_strcmp(fLocale.getLanguage(),"ja") == 0) {
+        fDateOverride.setTo(u"y=jpanyear", -1);
+    }
+
     // We don't need to check that the row count is >= 1, since all 2d arrays have at
     // least one row
-    fNumberFormat = NumberFormat::createInstance(locale, status);
+    fNumberFormat = NumberFormat::createInstance(localeNoHanidays, status);
     if (fNumberFormat != NULL && U_SUCCESS(status))
     {
-        // no matter what the locale's default number format looked like, we want
-        // to modify it so that it doesn't use thousands separators, doesn't always
-        // show the decimal point, and recognizes integers only when parsing
-
-        fNumberFormat->setGroupingUsed(FALSE);
-        DecimalFormat* decfmt = dynamic_cast<DecimalFormat*>(fNumberFormat);
-        if (decfmt != NULL) {
-            decfmt->setDecimalSeparatorAlwaysShown(FALSE);
-        }
-        fNumberFormat->setParseIntegerOnly(TRUE);
-        fNumberFormat->setMinimumFractionDigits(0); // To prevent "Jan 1.00, 1997.00"
+        fixNumberFormatForDates(*fNumberFormat);
+        //fNumberFormat->setLenient(TRUE); // Java uses a custom DateNumberFormat to format/parse
 
-        // TODO: Really, the default should be lenient...
-        fNumberFormat->setParseStrict(FALSE);
-
-        initNumberFormatters(locale,status);
+        initNumberFormatters(locale, status);
+        initFastNumberFormatters(status);
 
     }
     else if (U_SUCCESS(status))
@@ -765,6 +1029,19 @@ void SimpleDateFormat::initializeDefaultCentury()
   }
 }
 
+/*
+ * Initialize the boolean attributes. Separate so we can call it from all constructors.
+ */
+void SimpleDateFormat::initializeBooleanAttributes()
+{
+    UErrorCode status = U_ZERO_ERROR;
+
+    setBooleanAttribute(UDAT_PARSE_ALLOW_WHITESPACE, true, status);
+    setBooleanAttribute(UDAT_PARSE_ALLOW_NUMERIC, true, status);
+    setBooleanAttribute(UDAT_PARSE_PARTIAL_LITERAL_MATCH, true, status);
+    setBooleanAttribute(UDAT_PARSE_MULTIPLE_PATTERNS_FOR_MATCH, true, status);
+}
+
 /* Define one-century window into which to disambiguate dates using
  * two-digit years. Make public in JDK 1.2.
  */
@@ -809,25 +1086,35 @@ SimpleDateFormat::format(Calendar& cal, UnicodeString& appendTo,
 //----------------------------------------------------------------------
 
 UnicodeString&
-SimpleDateFormat::_format(Calendar& cal, UnicodeString& appendTo, FieldPositionHandler& handler,
-                          UErrorCode& status) const
+SimpleDateFormat::_format(Calendar& cal, UnicodeString& appendTo,
+                            FieldPositionHandler& handler, UErrorCode& status) const
 {
-    Calendar *workCal = &cal;
-    TimeZone *backupTZ = NULL;
+    if ( U_FAILURE(status) ) {
+       return appendTo;
+    }
+    Calendar* workCal = &cal;
+    Calendar* calClone = NULL;
     if (&cal != fCalendar && uprv_strcmp(cal.getType(), fCalendar->getType()) != 0) {
         // Different calendar type
         // We use the time and time zone from the input calendar, but
         // do not use the input calendar for field calculation.
-        UDate t = cal.getTime(status);
-        fCalendar->setTime(t, status);
-        backupTZ = fCalendar->getTimeZone().clone();
-        fCalendar->setTimeZone(cal.getTimeZone());
-        workCal = fCalendar;
+        calClone = fCalendar->clone();
+        if (calClone != NULL) {
+            UDate t = cal.getTime(status);
+            calClone->setTime(t, status);
+            calClone->setTimeZone(cal.getTimeZone());
+            workCal = calClone;
+        } else {
+            status = U_MEMORY_ALLOCATION_ERROR;
+            return appendTo;
+        }
     }
 
     UBool inQuote = FALSE;
     UChar prevCh = 0;
     int32_t count = 0;
+    int32_t fieldNum = 0;
+    UDisplayContext capitalizationContext = getContext(UDISPCTX_TYPE_CAPITALIZATION, status);
 
     // loop through the pattern string character by character
     for (int32_t i = 0; i < fPattern.length() && U_SUCCESS(status); ++i) {
@@ -836,7 +1123,7 @@ SimpleDateFormat::_format(Calendar& cal, UnicodeString& appendTo, FieldPositionH
         // Use subFormat() to format a repeated pattern character
         // when a different pattern or non-pattern character is seen
         if (ch != prevCh && count > 0) {
-            subFormat(appendTo, prevCh, count, handler, *workCal, status);
+            subFormat(appendTo, prevCh, count, capitalizationContext, fieldNum++, handler, *workCal, status);
             count = 0;
         }
         if (ch == QUOTE) {
@@ -849,8 +1136,7 @@ SimpleDateFormat::_format(Calendar& cal, UnicodeString& appendTo, FieldPositionH
                 inQuote = ! inQuote;
             }
         }
-        else if ( ! inQuote && ((ch >= 0x0061 /*'a'*/ && ch <= 0x007A /*'z'*/)
-                    || (ch >= 0x0041 /*'A'*/ && ch <= 0x005A /*'Z'*/))) {
+        else if (!inQuote && isSyntaxChar(ch)) {
             // ch is a date-time pattern character to be interpreted
             // by subFormat(); count the number of times it is repeated
             prevCh = ch;
@@ -864,12 +1150,11 @@ SimpleDateFormat::_format(Calendar& cal, UnicodeString& appendTo, FieldPositionH
 
     // Format the last item in the pattern, if any
     if (count > 0) {
-        subFormat(appendTo, prevCh, count, handler, *workCal, status);
+        subFormat(appendTo, prevCh, count, capitalizationContext, fieldNum++, handler, *workCal, status);
     }
 
-    if (backupTZ != NULL) {
-        // Restore the original time zone
-        fCalendar->adoptTimeZone(backupTZ);
+    if (calClone != NULL) {
+        delete calClone;
     }
 
     return appendTo;
@@ -890,29 +1175,85 @@ SimpleDateFormat::fgCalendarFieldToLevel[] =
     /*wW*/ 20, 30,
     /*dDEF*/ 30, 20, 30, 30,
     /*ahHm*/ 40, 50, 50, 60,
-    /*sS..*/ 70, 80,
+    /*sS*/ 70, 80,
     /*z?Y*/ 0, 0, 10,
     /*eug*/ 30, 10, 0,
-    /*A*/ 40
+    /*A?.*/ 40, 0, 0
 };
 
+int32_t SimpleDateFormat::getLevelFromChar(UChar ch) {
+    // Map date field LETTER into calendar field level.
+    // the larger the level, the smaller the field unit.
+    // NOTE: if new fields adds in, the table needs to update.
+    static const int32_t mapCharToLevel[] = {
+            -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+        //
+            -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+        //       !   "   #   $   %   &   '   (   )   *   +   ,   -   .   /
+            -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+#if UDAT_HAS_PATTERN_CHAR_FOR_TIME_SEPARATOR
+        //   0   1   2   3   4   5   6   7   8   9   :   ;   <   =   >   ?
+            -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,  0, -1, -1, -1, -1, -1,
+#else
+        //   0   1   2   3   4   5   6   7   8   9   :   ;   <   =   >   ?
+            -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+#endif
+        //   @   A   B   C   D   E   F   G   H   I   J   K   L   M   N   O
+            -1, 40, -1, -1, 20, 30, 30,  0, 50, -1, -1, 50, 20, 20, -1,  0,
+        //   P   Q   R   S   T   U   V   W   X   Y   Z   [   \   ]   ^   _
+            -1, 20, -1, 80, -1, 10,  0, 30,  0, 10,  0, -1, -1, -1, -1, -1,
+        //   `   a   b   c   d   e   f   g   h   i   j   k   l   m   n   o
+            -1, 40, -1, 30, 30, 30, -1,  0, 50, -1, -1, 50,  0, 60, -1, -1,
+        //   p   q   r   s   t   u   v   w   x   y   z   {   |   }   ~
+            -1, 20, 10, 70, -1, 10,  0, 20,  0, 10,  0, -1, -1, -1, -1, -1
+    };
+
+    return ch < UPRV_LENGTHOF(mapCharToLevel) ? mapCharToLevel[ch] : -1;
+}
 
-/* Map calendar field LETTER into calendar field level.
- * the larger the level, the smaller the field unit.
- * NOTE: if new fields adds in, the table needs to update.
- */
-const int32_t
-SimpleDateFormat::fgPatternCharToLevel[] = {
-    //       A   B   C   D   E   F   G   H   I   J   K   L   M   N   O
-        -1, 40, -1, -1, 20, 30, 30,  0, 50, -1, -1, 50, 20, 20, -1, -1,
-    //   P   Q   R   S   T   U   V   W   X   Y   Z
-        -1, 20, -1, 80, -1, -1,  0, 30, -1, 10,  0, -1, -1, -1, -1, -1,
-    //       a   b   c   d   e   f   g   h   i   j   k   l   m   n   o
-        -1, 40, -1, 30, 30, 30, -1,  0, 50, -1, -1, 50, -1, 60, -1, -1,
-    //   p   q   r   s   t   u   v   w   x   y   z
-        -1, 20, -1, 70, -1, 10,  0, 20, -1, 10,  0, -1, -1, -1, -1, -1
-};
-
+UBool SimpleDateFormat::isSyntaxChar(UChar ch) {
+    static const UBool mapCharToIsSyntax[] = {
+        //
+        FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE,
+        //
+        FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE,
+        //
+        FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE,
+        //
+        FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE,
+        //         !      "      #      $      %      &      '
+        FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE,
+        //  (      )      *      +      ,      -      .      /
+        FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE,
+        //  0      1      2      3      4      5      6      7
+        FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE,
+#if UDAT_HAS_PATTERN_CHAR_FOR_TIME_SEPARATOR
+        //  8      9      :      ;      <      =      >      ?
+        FALSE, FALSE,  TRUE, FALSE, FALSE, FALSE, FALSE, FALSE,
+#else
+        //  8      9      :      ;      <      =      >      ?
+        FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE,
+#endif
+        //  @      A      B      C      D      E      F      G
+        FALSE,  TRUE,  TRUE,  TRUE,  TRUE,  TRUE,  TRUE,  TRUE,
+        //  H      I      J      K      L      M      N      O
+         TRUE,  TRUE,  TRUE,  TRUE,  TRUE,  TRUE,  TRUE,  TRUE,
+        //  P      Q      R      S      T      U      V      W
+         TRUE,  TRUE,  TRUE,  TRUE,  TRUE,  TRUE,  TRUE,  TRUE,
+        //  X      Y      Z      [      \      ]      ^      _
+         TRUE,  TRUE,  TRUE, FALSE, FALSE, FALSE, FALSE, FALSE,
+        //  `      a      b      c      d      e      f      g
+        FALSE,  TRUE,  TRUE,  TRUE,  TRUE,  TRUE,  TRUE,  TRUE,
+        //  h      i      j      k      l      m      n      o
+         TRUE,  TRUE,  TRUE,  TRUE,  TRUE,  TRUE,  TRUE,  TRUE,
+        //  p      q      r      s      t      u      v      w
+         TRUE,  TRUE,  TRUE,  TRUE,  TRUE,  TRUE,  TRUE,  TRUE,
+        //  x      y      z      {      |      }      ~
+         TRUE,  TRUE,  TRUE, FALSE, FALSE, FALSE, FALSE, FALSE
+    };
+
+    return ch < UPRV_LENGTHOF(mapCharToIsSyntax) ? mapCharToIsSyntax[ch] : FALSE;
+}
 
 // Map index into pattern character string to Calendar field number.
 const UCalendarDateFields
@@ -932,6 +1273,16 @@ SimpleDateFormat::fgPatternIndexToCalendarField[] =
     /*Q*/   UCAL_MONTH,
     /*q*/   UCAL_MONTH,
     /*V*/   UCAL_ZONE_OFFSET,
+    /*U*/   UCAL_YEAR,
+    /*O*/   UCAL_ZONE_OFFSET,
+    /*Xx*/  UCAL_ZONE_OFFSET, UCAL_ZONE_OFFSET,
+    /*r*/   UCAL_EXTENDED_YEAR,
+    /*bB*/   UCAL_FIELD_COUNT, UCAL_FIELD_COUNT,  // no mappings to calendar fields
+#if UDAT_HAS_PATTERN_CHAR_FOR_TIME_SEPARATOR
+    /*:*/   UCAL_FIELD_COUNT, /* => no useful mapping to any calendar field */
+#else
+    /*no pattern char for UDAT_TIME_SEPARATOR_FIELD*/   UCAL_FIELD_COUNT, /* => no useful mapping to any calendar field */
+#endif
 };
 
 // Map index into pattern character string to DateFormat field number
@@ -951,6 +1302,16 @@ SimpleDateFormat::fgPatternIndexToDateFormatField[] = {
     /*Q*/   UDAT_QUARTER_FIELD,
     /*q*/   UDAT_STANDALONE_QUARTER_FIELD,
     /*V*/   UDAT_TIMEZONE_SPECIAL_FIELD,
+    /*U*/   UDAT_YEAR_NAME_FIELD,
+    /*O*/   UDAT_TIMEZONE_LOCALIZED_GMT_OFFSET_FIELD,
+    /*Xx*/  UDAT_TIMEZONE_ISO_FIELD, UDAT_TIMEZONE_ISO_LOCAL_FIELD,
+    /*r*/   UDAT_RELATED_YEAR_FIELD,
+    /*bB*/  UDAT_AM_PM_MIDNIGHT_NOON_FIELD, UDAT_FLEXIBLE_DAY_PERIOD_FIELD,
+#if UDAT_HAS_PATTERN_CHAR_FOR_TIME_SEPARATOR
+    /*:*/   UDAT_TIME_SEPARATOR_FIELD,
+#else
+    /*no pattern char for UDAT_TIME_SEPARATOR_FIELD*/   UDAT_TIME_SEPARATOR_FIELD,
+#endif
 };
 
 //----------------------------------------------------------------------
@@ -970,408 +1331,99 @@ _appendSymbol(UnicodeString& dst,
     }
 }
 
-//---------------------------------------------------------------------
-void
-SimpleDateFormat::appendGMT(NumberFormat *currentNumberFormat,UnicodeString &appendTo, Calendar& cal, UErrorCode& status) const{
-    int32_t offset = cal.get(UCAL_ZONE_OFFSET, status) + cal.get(UCAL_DST_OFFSET, status);
-    if (U_FAILURE(status)) {
-        return;
-    }
-    if (isDefaultGMTFormat()) {
-        formatGMTDefault(currentNumberFormat,appendTo, offset);
-    } else {
-        ((SimpleDateFormat*)this)->initGMTFormatters(status);
-        if (U_SUCCESS(status)) {
-            int32_t type;
-            if (offset < 0) {
-                offset = -offset;
-                type = (offset % U_MILLIS_PER_MINUTE) == 0 ? kGMTNegativeHM : kGMTNegativeHMS;
-            } else {
-                type = (offset % U_MILLIS_PER_MINUTE) == 0 ? kGMTPositiveHM : kGMTPositiveHMS;
-            }
-            Formattable param(offset, Formattable::kIsDate);
-            FieldPosition fpos(0);
-            fGMTFormatters[type]->format(&param, 1, appendTo, fpos, status);
+static inline void
+_appendSymbolWithMonthPattern(UnicodeString& dst, int32_t value, const UnicodeString* symbols, int32_t symbolsCount,
+              const UnicodeString* monthPattern, UErrorCode& status) {
+    U_ASSERT(0 <= value && value < symbolsCount);
+    if (0 <= value && value < symbolsCount) {
+        if (monthPattern == NULL) {
+            dst += symbols[value];
+        } else {
+            SimpleFormatter(*monthPattern, 1, 1, status).format(symbols[value], dst, status);
         }
     }
 }
 
-int32_t
-SimpleDateFormat::parseGMT(const UnicodeString &text, ParsePosition &pos) const {
-    if (!isDefaultGMTFormat()) {
-        int32_t start = pos.getIndex();
-
-        // Quick check
-        UBool prefixMatch = FALSE;
-        int32_t prefixLen = fSymbols->fGmtFormat.indexOf((UChar)0x007B /* '{' */);
-        if (prefixLen > 0 && text.compare(start, prefixLen, fSymbols->fGmtFormat, 0, prefixLen) == 0) {
-            prefixMatch = TRUE;
-        }
-        if (prefixMatch) {
-            // Prefix matched
-            UErrorCode status = U_ZERO_ERROR;
-            ((SimpleDateFormat*)this)->initGMTFormatters(status);
-            if (U_SUCCESS(status)) {
-                Formattable parsed;
-                int32_t parsedCount;
-
-                // Try negative Hms
-                fGMTFormatters[kGMTNegativeHMS]->parseObject(text, parsed, pos);
-                if (pos.getErrorIndex() == -1 &&
-                    (pos.getIndex() - start) >= fGMTFormatHmsMinLen[kGMTNegativeHMSMinLenIdx]) {
-                    parsed.getArray(parsedCount);
-                    if (parsedCount == 1 && parsed[0].getType() == Formattable::kDate) {
-                        return (int32_t)(-1 * (int64_t)parsed[0].getDate());
-                    }
-                }
-
-                // Reset ParsePosition
-                pos.setIndex(start);
-                pos.setErrorIndex(-1);
-
-                // Try positive Hms
-                fGMTFormatters[kGMTPositiveHMS]->parseObject(text, parsed, pos);
-                if (pos.getErrorIndex() == -1 &&
-                    (pos.getIndex() - start) >= fGMTFormatHmsMinLen[kGMTPositiveHMSMinLenIdx]) {
-                    parsed.getArray(parsedCount);
-                    if (parsedCount == 1 && parsed[0].getType() == Formattable::kDate) {
-                        return (int32_t)((int64_t)parsed[0].getDate());
-                    }
-                }
-
-                // Reset ParsePosition
-                pos.setIndex(start);
-                pos.setErrorIndex(-1);
-
-                // Try negative Hm
-                fGMTFormatters[kGMTNegativeHM]->parseObject(text, parsed, pos);
-                if (pos.getErrorIndex() == -1 && pos.getIndex() > start) {
-                    parsed.getArray(parsedCount);
-                    if (parsedCount == 1 && parsed[0].getType() == Formattable::kDate) {
-                        return (int32_t)(-1 * (int64_t)parsed[0].getDate());
-                    }
-                }
-
-                // Reset ParsePosition
-                pos.setIndex(start);
-                pos.setErrorIndex(-1);
-
-                // Try positive Hm
-                fGMTFormatters[kGMTPositiveHM]->parseObject(text, parsed, pos);
-                if (pos.getErrorIndex() == -1 && pos.getIndex() > start) {
-                    parsed.getArray(parsedCount);
-                    if (parsedCount == 1 && parsed[0].getType() == Formattable::kDate) {
-                        return (int32_t)((int64_t)parsed[0].getDate());
-                    }
-                }
+//----------------------------------------------------------------------
 
-                // Reset ParsePosition
-                pos.setIndex(start);
-                pos.setErrorIndex(-1);
-            }
-            // fall through to the default GMT parsing method
-        }
-    }
-    return parseGMTDefault(text, pos);
+static number::LocalizedNumberFormatter*
+createFastFormatter(const DecimalFormat* df, int32_t minInt, int32_t maxInt) {
+    return new number::LocalizedNumberFormatter(
+            df->toNumberFormatter()
+                    .integerWidth(number::IntegerWidth::zeroFillTo(minInt).truncateAt(maxInt)));
 }
 
-void
-SimpleDateFormat::formatGMTDefault(NumberFormat *currentNumberFormat,UnicodeString &appendTo, int32_t offset) const {
-    if (offset < 0) {
-        appendTo += gGmtMinus;
-        offset = -offset; // suppress the '-' sign for text display.
-    }else{
-        appendTo += gGmtPlus;
+void SimpleDateFormat::initFastNumberFormatters(UErrorCode& status) {
+    if (U_FAILURE(status)) {
+        return;
     }
-
-    offset /= U_MILLIS_PER_SECOND; // now in seconds
-    int32_t sec = offset % 60;
-    offset /= 60;
-    int32_t min = offset % 60;
-    int32_t hour = offset / 60;
-
-
-    zeroPaddingNumber(currentNumberFormat,appendTo, hour, 2, 2);
-    appendTo += (UChar)0x003A /*':'*/;
-    zeroPaddingNumber(currentNumberFormat,appendTo, min, 2, 2);
-    if (sec != 0) {
-        appendTo += (UChar)0x003A /*':'*/;
-        zeroPaddingNumber(currentNumberFormat,appendTo, sec, 2, 2);
+    auto* df = dynamic_cast<DecimalFormat*>(fNumberFormat);
+    if (df == nullptr) {
+        return;
     }
+    df->setDFSShallowCopy(TRUE);
+    fFastNumberFormatters[SMPDTFMT_NF_1x10] = createFastFormatter(df, 1, 10);
+    fFastNumberFormatters[SMPDTFMT_NF_2x10] = createFastFormatter(df, 2, 10);
+    fFastNumberFormatters[SMPDTFMT_NF_3x10] = createFastFormatter(df, 3, 10);
+    fFastNumberFormatters[SMPDTFMT_NF_4x10] = createFastFormatter(df, 4, 10);
+    fFastNumberFormatters[SMPDTFMT_NF_2x2] = createFastFormatter(df, 2, 2);
+    df->setDFSShallowCopy(FALSE);
 }
 
-int32_t
-SimpleDateFormat::parseGMTDefault(const UnicodeString &text, ParsePosition &pos) const {
-    int32_t start = pos.getIndex();
-    NumberFormat *currentNumberFormat = getNumberFormatByIndex(UDAT_TIMEZONE_RFC_FIELD);
+void SimpleDateFormat::freeFastNumberFormatters() {
+    delete fFastNumberFormatters[SMPDTFMT_NF_1x10];
+    delete fFastNumberFormatters[SMPDTFMT_NF_2x10];
+    delete fFastNumberFormatters[SMPDTFMT_NF_3x10];
+    delete fFastNumberFormatters[SMPDTFMT_NF_4x10];
+    delete fFastNumberFormatters[SMPDTFMT_NF_2x2];
+    fFastNumberFormatters[SMPDTFMT_NF_1x10] = nullptr;
+    fFastNumberFormatters[SMPDTFMT_NF_2x10] = nullptr;
+    fFastNumberFormatters[SMPDTFMT_NF_3x10] = nullptr;
+    fFastNumberFormatters[SMPDTFMT_NF_4x10] = nullptr;
+    fFastNumberFormatters[SMPDTFMT_NF_2x2] = nullptr;
+}
 
-    if (start + kUtLen + 1 >= text.length()) {
-        pos.setErrorIndex(start);
-        return 0;
-    }
 
-    int32_t cur = start;
-    // "GMT"
-    if (text.compare(start, kGmtLen, gGmt) == 0) {
-        cur += kGmtLen;
-    } else if (text.compare(start, kUtLen, gUt) == 0) {
-        cur += kUtLen;
-    } else {
-        pos.setErrorIndex(start);
-        return 0;
+void
+SimpleDateFormat::initNumberFormatters(const Locale &locale,UErrorCode &status) {
+    if (U_FAILURE(status)) {
+        return;
     }
-    // Sign
-    UBool negative = FALSE;
-    if (text.charAt(cur) == (UChar)0x002D /* minus */) {
-        negative = TRUE;
-    } else if (text.charAt(cur) != (UChar)0x002B /* plus */) {
-        pos.setErrorIndex(cur);
-        return 0;
+    if ( fDateOverride.isBogus() && fTimeOverride.isBogus() ) {
+        return;
     }
-    cur++;
-
-    // Numbers
-    int32_t numLen;
-    pos.setIndex(cur);
-
-    Formattable number;
-    parseInt(text, number, 6, pos, FALSE,currentNumberFormat);
-    numLen = pos.getIndex() - cur;
-
-    if (numLen <= 0) {
-        pos.setIndex(start);
-        pos.setErrorIndex(cur);
-        return 0;
-    }
-
-    int32_t numVal = number.getLong();
-
-    int32_t hour = 0;
-    int32_t min = 0;
-    int32_t sec = 0;
-
-    if (numLen <= 2) {
-        // H[H][:mm[:ss]]
-        hour = numVal;
-        cur += numLen;
-        if (cur + 2 < text.length() && text.charAt(cur) == (UChar)0x003A /* colon */) {
-            cur++;
-            pos.setIndex(cur);
-            parseInt(text, number, 2, pos, FALSE,currentNumberFormat);
-            numLen = pos.getIndex() - cur;
-            if (numLen == 2) {
-                // got minute field
-                min = number.getLong();
-                cur += numLen;
-                if (cur + 2 < text.length() && text.charAt(cur) == (UChar)0x003A /* colon */) {
-                    cur++;
-                    pos.setIndex(cur);
-                    parseInt(text, number, 2, pos, FALSE,currentNumberFormat);
-                    numLen = pos.getIndex() - cur;
-                    if (numLen == 2) {
-                        // got second field
-                        sec = number.getLong();
-                    } else {
-                        // reset position
-                        pos.setIndex(cur - 1);
-                        pos.setErrorIndex(-1);
-                    }
-                }
-            } else {
-                // reset postion
-                pos.setIndex(cur - 1);
-                pos.setErrorIndex(-1);
-            }
-        }
-    } else if (numLen == 3 || numLen == 4) {
-        // Hmm or HHmm
-        hour = numVal / 100;
-        min = numVal % 100;
-    } else if (numLen == 5 || numLen == 6) {
-        // Hmmss or HHmmss
-        hour = numVal / 10000;
-        min = (numVal % 10000) / 100;
-        sec = numVal % 100;
-    } else {
-        // HHmmss followed by bogus numbers
-        pos.setIndex(cur + 6);
-
-        int32_t shift = numLen - 6;
-        while (shift > 0) {
-            numVal /= 10;
-            shift--;
+    umtx_lock(LOCK());
+    if (fSharedNumberFormatters == NULL) {
+        fSharedNumberFormatters = allocSharedNumberFormatters();
+        if (fSharedNumberFormatters == NULL) {
+            status = U_MEMORY_ALLOCATION_ERROR;
         }
-        hour = numVal / 10000;
-        min = (numVal % 10000) / 100;
-        sec = numVal % 100;
     }
+    umtx_unlock(LOCK());
 
-    int32_t offset = ((hour*60 + min)*60 + sec)*1000;
-    if (negative) {
-        offset = -offset;
+    if (U_FAILURE(status)) {
+        return;
     }
-    return offset;
-}
-
-UBool
-SimpleDateFormat::isDefaultGMTFormat() const {
-    // GMT pattern
-    if (fSymbols->fGmtFormat.length() == 0) {
-        // No GMT pattern is set
-        return TRUE;
-    } else if (fSymbols->fGmtFormat.compare(gDefGmtPat, kGmtPatLen) != 0) {
-        return FALSE;
-    }
-    // Hour patterns
-    if (fSymbols->fGmtHourFormats == NULL || fSymbols->fGmtHourFormatsCount != DateFormatSymbols::GMT_HOUR_COUNT) {
-        // No Hour pattern is set
-        return TRUE;
-    } else if ((fSymbols->fGmtHourFormats[DateFormatSymbols::GMT_NEGATIVE_HMS].compare(gDefGmtNegHmsPat, kNegHmsLen) != 0)
-        || (fSymbols->fGmtHourFormats[DateFormatSymbols::GMT_NEGATIVE_HM].compare(gDefGmtNegHmPat, kNegHmLen) != 0)
-        || (fSymbols->fGmtHourFormats[DateFormatSymbols::GMT_POSITIVE_HMS].compare(gDefGmtPosHmsPat, kPosHmsLen) != 0)
-        || (fSymbols->fGmtHourFormats[DateFormatSymbols::GMT_POSITIVE_HM].compare(gDefGmtPosHmPat, kPosHmLen) != 0)) {
-        return FALSE;
-    }
-    return TRUE;
-}
-
-void
-SimpleDateFormat::formatRFC822TZ(UnicodeString &appendTo, int32_t offset) const {
-    UChar sign = 0x002B /* '+' */;
-    if (offset < 0) {
-        offset = -offset;
-        sign = 0x002D /* '-' */;
-    }
-    appendTo.append(sign);
-
-    int32_t offsetH = offset / U_MILLIS_PER_HOUR;
-    offset = offset % U_MILLIS_PER_HOUR;
-    int32_t offsetM = offset / U_MILLIS_PER_MINUTE;
-    offset = offset % U_MILLIS_PER_MINUTE;
-    int32_t offsetS = offset / U_MILLIS_PER_SECOND;
-
-    int32_t num = 0, denom = 0;
-    if (offsetS == 0) {
-        offset = offsetH*100 + offsetM; // HHmm
-        num = offset % 10000;
-        denom = 1000;
-    } else {
-        offset = offsetH*10000 + offsetM*100 + offsetS; // HHmmss
-        num = offset % 1000000;
-        denom = 100000;
-    }
-    while (denom >= 1) {
-        UChar digit = (UChar)0x0030 + (num / denom);
-        appendTo.append(digit);
-        num = num % denom;
-        denom /= 10;
-    }
-}
-
-void
-SimpleDateFormat::initGMTFormatters(UErrorCode &status) {
-    if (U_FAILURE(status)) {
-        return;
-    }
-    umtx_lock(&LOCK);
-    if (fGMTFormatters == NULL) {
-        fGMTFormatters = (MessageFormat**)uprv_malloc(kNumGMTFormatters * sizeof(MessageFormat*));
-        if (fGMTFormatters) {
-            for (int32_t i = 0; i < kNumGMTFormatters; i++) {
-                const UnicodeString *hourPattern = NULL; //initialized it to avoid warning
-                switch (i) {
-                    case kGMTNegativeHMS:
-                        hourPattern = &(fSymbols->fGmtHourFormats[DateFormatSymbols::GMT_NEGATIVE_HMS]);
-                        break;
-                    case kGMTNegativeHM:
-                        hourPattern = &(fSymbols->fGmtHourFormats[DateFormatSymbols::GMT_NEGATIVE_HM]);
-                        break;
-                    case kGMTPositiveHMS:
-                        hourPattern = &(fSymbols->fGmtHourFormats[DateFormatSymbols::GMT_POSITIVE_HMS]);
-                        break;
-                    case kGMTPositiveHM:
-                        hourPattern = &(fSymbols->fGmtHourFormats[DateFormatSymbols::GMT_POSITIVE_HM]);
-                        break;
-                }
-                fGMTFormatters[i] = new MessageFormat(fSymbols->fGmtFormat, status);
-                GregorianCalendar *gcal = new GregorianCalendar(TimeZone::createTimeZone(UnicodeString(gEtcUTC)), status);
-                if (U_FAILURE(status)) {
-                    break;
-                }
-                SimpleDateFormat *sdf = (SimpleDateFormat*)this->clone();
-                sdf->adoptCalendar(gcal);
-                sdf->applyPattern(*hourPattern);
-                
-                // This prevents a hours format pattern like "-HH:mm:ss" from matching
-                // in a string like "GMT-07:00 10:08:11 PM"
-                sdf->setLenient(FALSE);
-                
-                fGMTFormatters[i]->adoptFormat(0, sdf);
-
-                // For parsing, we only allow Hms patterns to be equal or longer
-                // than its length with fixed minutes/seconds digits.
-                // See #6880
-                if (i == kGMTNegativeHMS || i == kGMTPositiveHMS) {
-                    UnicodeString tmp;
-                    Formattable tmpParam(60*60*1000, Formattable::kIsDate);
-                    FieldPosition fpos(0);
-                    fGMTFormatters[i]->format(&tmpParam, 1, tmp, fpos, status);
-                    if (U_FAILURE(status)) {
-                        break;
-                    }
-                    if (i == kGMTNegativeHMS) {
-                        fGMTFormatHmsMinLen[kGMTNegativeHMSMinLenIdx] = tmp.length();
-                    } else {
-                        fGMTFormatHmsMinLen[kGMTPositiveHMSMinLenIdx] = tmp.length();
-                    }
-                }
-            }
-        } else {
-            status = U_MEMORY_ALLOCATION_ERROR;
-        }
-    }
-    umtx_unlock(&LOCK);
-}
-
-void
-SimpleDateFormat::initNumberFormatters(const Locale &locale,UErrorCode &status) {
-    if (U_FAILURE(status)) {
-        return;
-    }
-    if ( fDateOverride.isBogus() && fTimeOverride.isBogus() ) {
-        return;
-    }
-    umtx_lock(&LOCK);
-    if (fNumberFormatters == NULL) {
-        fNumberFormatters = (NumberFormat**)uprv_malloc(UDAT_FIELD_COUNT * sizeof(NumberFormat*));
-        if (fNumberFormatters) {
-            for (int32_t i = 0; i < UDAT_FIELD_COUNT; i++) {
-                fNumberFormatters[i] = fNumberFormat;
-            }
-        } else {
-            status = U_MEMORY_ALLOCATION_ERROR;
-        }
-    }
-    umtx_unlock(&LOCK);
-
-    processOverrideString(locale,fDateOverride,kOvrStrDate,status);
-    processOverrideString(locale,fTimeOverride,kOvrStrTime,status);
 
+    processOverrideString(locale,fDateOverride,kOvrStrDate,status);
+    processOverrideString(locale,fTimeOverride,kOvrStrTime,status);
 }
 
 void
 SimpleDateFormat::processOverrideString(const Locale &locale, const UnicodeString &str, int8_t type, UErrorCode &status) {
-    if (str.isBogus()) {
+    if (str.isBogus() || U_FAILURE(status)) {
         return;
     }
+
     int32_t start = 0;
     int32_t len;
     UnicodeString nsName;
     UnicodeString ovrField;
     UBool moreToProcess = TRUE;
+    NSOverride *overrideList = NULL;
 
     while (moreToProcess) {
-        int32_t delimiterPosition = str.indexOf(ULOC_KEYWORD_ITEM_SEPARATOR_UNICODE,start);
+        int32_t delimiterPosition = str.indexOf((UChar)ULOC_KEYWORD_ITEM_SEPARATOR_UNICODE,start);
         if (delimiterPosition == -1) {
             moreToProcess = FALSE;
             len = str.length() - start;
@@ -1379,7 +1431,7 @@ SimpleDateFormat::processOverrideString(const Locale &locale, const UnicodeStrin
             len = delimiterPosition - start;
         }
         UnicodeString currentString(str,start,len);
-        int32_t equalSignPosition = currentString.indexOf(ULOC_KEYWORD_ASSIGN_UNICODE,0);
+        int32_t equalSignPosition = currentString.indexOf((UChar)ULOC_KEYWORD_ASSIGN_UNICODE,0);
         if (equalSignPosition == -1) { // Simple override string such as "hebrew"
             nsName.setTo(currentString);
             ovrField.setToBogus();
@@ -1390,104 +1442,95 @@ SimpleDateFormat::processOverrideString(const Locale &locale, const UnicodeStrin
 
         int32_t nsNameHash = nsName.hashCode();
         // See if the numbering system is in the override list, if not, then add it.
-        NSOverride *cur = fOverrideList;
-        NumberFormat *nf = NULL;
+        NSOverride *curr = overrideList;
+        const SharedNumberFormat *snf = NULL;
         UBool found = FALSE;
-        while ( cur && !found ) {
-            if ( cur->hash == nsNameHash ) {
-                nf = cur->nf;
+        while ( curr && !found ) {
+            if ( curr->hash == nsNameHash ) {
+                snf = curr->snf;
                 found = TRUE;
             }
-            cur = cur->next;
+            curr = curr->next;
         }
 
         if (!found) {
-           cur = (NSOverride *)uprv_malloc(sizeof(NSOverride));
-           if (cur) {
+           LocalPointer<NSOverride> cur(new NSOverride);
+           if (!cur.isNull()) {
                char kw[ULOC_KEYWORD_AND_VALUES_CAPACITY];
                uprv_strcpy(kw,"numbers=");
                nsName.extract(0,len,kw+8,ULOC_KEYWORD_AND_VALUES_CAPACITY-8,US_INV);
 
                Locale ovrLoc(locale.getLanguage(),locale.getCountry(),locale.getVariant(),kw);
-               nf = NumberFormat::createInstance(ovrLoc,status);
-
-               // no matter what the locale's default number format looked like, we want
-               // to modify it so that it doesn't use thousands separators, doesn't always
-               // show the decimal point, and recognizes integers only when parsing
-
-               if (U_SUCCESS(status)) {
-                   nf->setGroupingUsed(FALSE);
-                   DecimalFormat* decfmt = dynamic_cast<DecimalFormat*>(nf);
-                   if (decfmt != NULL) {
-                       decfmt->setDecimalSeparatorAlwaysShown(FALSE);
-                   }
-                   nf->setParseIntegerOnly(TRUE);
-                   nf->setMinimumFractionDigits(0); // To prevent "Jan 1.00, 1997.00"
-
-                   cur->nf = nf;
-                   cur->hash = nsNameHash;
-                   cur->next = fOverrideList;
-                   fOverrideList = cur;
-               }
-               else {
-                   // clean up before returning
-                   if (cur != NULL) {
-                       uprv_free(cur);
+               cur->hash = nsNameHash;
+               cur->next = overrideList;
+               SharedObject::copyPtr(
+                       createSharedNumberFormat(ovrLoc, status), cur->snf);
+               if (U_FAILURE(status)) {
+                   if (overrideList) {
+                       overrideList->free();
                    }
-                  return;
+                   return;
                }
-
+               snf = cur->snf;
+               overrideList = cur.orphan();
            } else {
                status = U_MEMORY_ALLOCATION_ERROR;
+               if (overrideList) {
+                   overrideList->free();
+               }
                return;
            }
         }
 
         // Now that we have an appropriate number formatter, fill in the appropriate spaces in the
         // number formatters table.
-
         if (ovrField.isBogus()) {
             switch (type) {
                 case kOvrStrDate:
                 case kOvrStrBoth: {
                     for ( int8_t i=0 ; i<kDateFieldsCount; i++ ) {
-                        fNumberFormatters[kDateFields[i]] = nf;
+                        SharedObject::copyPtr(snf, fSharedNumberFormatters[kDateFields[i]]);
                     }
                     if (type==kOvrStrDate) {
                         break;
                     }
+                    U_FALLTHROUGH;
                 }
                 case kOvrStrTime : {
                     for ( int8_t i=0 ; i<kTimeFieldsCount; i++ ) {
-                        fNumberFormatters[kTimeFields[i]] = nf;
+                        SharedObject::copyPtr(snf, fSharedNumberFormatters[kTimeFields[i]]);
                     }
                     break;
                 }
             }
         } else {
-           UChar ch = ovrField.charAt(0);
-           UChar *patternCharPtr = u_strchr(DateFormatSymbols::getPatternUChars(), ch);
-           UDateFormatField patternCharIndex;
-
            // if the pattern character is unrecognized, signal an error and bail out
-           if (patternCharPtr == NULL) {
+           UDateFormatField patternCharIndex =
+              DateFormatSymbols::getPatternCharIndex(ovrField.charAt(0));
+           if (patternCharIndex == UDAT_FIELD_COUNT) {
                status = U_INVALID_FORMAT_ERROR;
+               if (overrideList) {
+                   overrideList->free();
+               }
                return;
            }
-           patternCharIndex = (UDateFormatField)(patternCharPtr - DateFormatSymbols::getPatternUChars());
-
-           // Set the number formatter in the table
-           fNumberFormatters[patternCharIndex] = nf;
+           SharedObject::copyPtr(snf, fSharedNumberFormatters[patternCharIndex]);
         }
 
         start = delimiterPosition + 1;
     }
+    if (overrideList) {
+        overrideList->free();
+    }
 }
+
 //---------------------------------------------------------------------
 void
 SimpleDateFormat::subFormat(UnicodeString &appendTo,
                             UChar ch,
                             int32_t count,
+                            UDisplayContext capitalizationContext,
+                            int32_t fieldNum,
                             FieldPositionHandler& handler,
                             Calendar& cal,
                             UErrorCode& status) const
@@ -1499,43 +1542,72 @@ SimpleDateFormat::subFormat(UnicodeString &appendTo,
     // this function gets called by format() to produce the appropriate substitution
     // text for an individual pattern symbol (e.g., "HH" or "yyyy")
 
-    UChar *patternCharPtr = u_strchr(DateFormatSymbols::getPatternUChars(), ch);
-    UDateFormatField patternCharIndex;
+    UDateFormatField patternCharIndex = DateFormatSymbols::getPatternCharIndex(ch);
     const int32_t maxIntCount = 10;
     int32_t beginOffset = appendTo.length();
-    NumberFormat *currentNumberFormat;
+    const NumberFormat *currentNumberFormat;
+    DateFormatSymbols::ECapitalizationContextUsageType capContextUsageType = DateFormatSymbols::kCapContextUsageOther;
 
-    UBool isHebrewCalendar = !strcmp(cal.getType(),"hebrew");
+    UBool isHebrewCalendar = (uprv_strcmp(cal.getType(),"hebrew") == 0);
+    UBool isChineseCalendar = (uprv_strcmp(cal.getType(),"chinese") == 0 || uprv_strcmp(cal.getType(),"dangi") == 0);
 
     // if the pattern character is unrecognized, signal an error and dump out
-    if (patternCharPtr == NULL)
+    if (patternCharIndex == UDAT_FIELD_COUNT)
     {
-        status = U_INVALID_FORMAT_ERROR;
+        if (ch != 0x6C) { // pattern char 'l' (SMALL LETTER L) just gets ignored
+            status = U_INVALID_FORMAT_ERROR;
+        }
         return;
     }
 
-    patternCharIndex = (UDateFormatField)(patternCharPtr - DateFormatSymbols::getPatternUChars());
     UCalendarDateFields field = fgPatternIndexToCalendarField[patternCharIndex];
-    int32_t value = cal.get(field, status);
+    int32_t value = 0;
+    // Don't get value unless it is useful
+    if (field < UCAL_FIELD_COUNT) {
+        value = (patternCharIndex != UDAT_RELATED_YEAR_FIELD)? cal.get(field, status): cal.getRelatedYear(status);
+    }
     if (U_FAILURE(status)) {
         return;
     }
 
     currentNumberFormat = getNumberFormatByIndex(patternCharIndex);
+    if (currentNumberFormat == NULL) {
+        status = U_INTERNAL_PROGRAM_ERROR;
+        return;
+    }
+    UnicodeString hebr("hebr", 4, US_INV);
+
     switch (patternCharIndex) {
 
     // for any "G" symbol, write out the appropriate era string
     // "GGGG" is wide era name, "GGGGG" is narrow era name, anything else is abbreviated name
     case UDAT_ERA_FIELD:
-        if (count == 5)
-           _appendSymbol(appendTo, value, fSymbols->fNarrowEras, fSymbols->fNarrowErasCount);
-        else if (count == 4)
-           _appendSymbol(appendTo, value, fSymbols->fEraNames, fSymbols->fEraNamesCount);
-        else
-           _appendSymbol(appendTo, value, fSymbols->fEras, fSymbols->fErasCount);
+        if (isChineseCalendar) {
+            zeroPaddingNumber(currentNumberFormat,appendTo, value, 1, 9); // as in ICU4J
+        } else {
+            if (count == 5) {
+                _appendSymbol(appendTo, value, fSymbols->fNarrowEras, fSymbols->fNarrowErasCount);
+                capContextUsageType = DateFormatSymbols::kCapContextUsageEraNarrow;
+            } else if (count == 4) {
+                _appendSymbol(appendTo, value, fSymbols->fEraNames, fSymbols->fEraNamesCount);
+                capContextUsageType = DateFormatSymbols::kCapContextUsageEraWide;
+            } else {
+                _appendSymbol(appendTo, value, fSymbols->fEras, fSymbols->fErasCount);
+                capContextUsageType = DateFormatSymbols::kCapContextUsageEraAbbrev;
+            }
+        }
         break;
 
-    // OLD: for "yyyy", write out the whole year; for "yy", write out the last 2 digits
+     case UDAT_YEAR_NAME_FIELD:
+        if (fSymbols->fShortYearNames != NULL && value <= fSymbols->fShortYearNamesCount) {
+            // the Calendar YEAR field runs 1 through 60 for cyclic years
+            _appendSymbol(appendTo, value - 1, fSymbols->fShortYearNames, fSymbols->fShortYearNamesCount);
+            break;
+        }
+        // else fall through to numeric year handling, do not break here
+        U_FALLTHROUGH;
+
+   // OLD: for "yyyy", write out the whole year; for "yy", write out the last 2 digits
     // NEW: UTS#35:
 //Year         y     yy     yyy     yyyy     yyyyy
 //AD 1         1     01     001     0001     00001
@@ -1545,17 +1617,21 @@ SimpleDateFormat::subFormat(UnicodeString &appendTo,
 //AD 12345 12345     45   12345    12345     12345
     case UDAT_YEAR_FIELD:
     case UDAT_YEAR_WOY_FIELD:
+        if (fDateOverride.compare(hebr)==0 && value>HEBREW_CAL_CUR_MILLENIUM_START_YEAR && value<HEBREW_CAL_CUR_MILLENIUM_END_YEAR) {
+            value-=HEBREW_CAL_CUR_MILLENIUM_START_YEAR;
+        }
         if(count == 2)
             zeroPaddingNumber(currentNumberFormat, appendTo, value, 2, 2);
         else
             zeroPaddingNumber(currentNumberFormat, appendTo, value, count, maxIntCount);
         break;
 
-    // for "MMMM", write out the whole month name, for "MMM", write out the month
-    // abbreviation, for "M" or "MM", write out the month as a number with the
+    // for "MMMM"/"LLLL", write out the whole month name, for "MMM"/"LLL", write out the month
+    // abbreviation, for "M"/"L" or "MM"/"LL", write out the month as a number with the
     // appropriate number of digits
-    // for "MMMMM", use the narrow form
+    // for "MMMMM"/"LLLLL", use the narrow form
     case UDAT_MONTH_FIELD:
+    case UDAT_STANDALONE_MONTH_FIELD:
         if ( isHebrewCalendar ) {
            HebrewCalendar *hc = (HebrewCalendar*)&cal;
            if (hc->isLeapYear(hc->get(UCAL_YEAR,status)) && value == 6 && count >= 3 )
@@ -1563,35 +1639,46 @@ SimpleDateFormat::subFormat(UnicodeString &appendTo,
            if (!hc->isLeapYear(hc->get(UCAL_YEAR,status)) && value >= 6 && count < 3 )
                value--; // Adjust the month number down 1 in Hebrew non-leap years, i.e. Adar is 6, not 7.
         }
-        if (count == 5)
-            _appendSymbol(appendTo, value, fSymbols->fNarrowMonths,
-                          fSymbols->fNarrowMonthsCount);
-        else if (count == 4)
-            _appendSymbol(appendTo, value, fSymbols->fMonths,
-                          fSymbols->fMonthsCount);
-        else if (count == 3)
-            _appendSymbol(appendTo, value, fSymbols->fShortMonths,
-                          fSymbols->fShortMonthsCount);
-        else
-            zeroPaddingNumber(currentNumberFormat,appendTo, value + 1, count, maxIntCount);
-        break;
-
-    // for "LLLL", write out the whole month name, for "LLL", write out the month
-    // abbreviation, for "L" or "LL", write out the month as a number with the
-    // appropriate number of digits
-    // for "LLLLL", use the narrow form
-    case UDAT_STANDALONE_MONTH_FIELD:
-        if (count == 5)
-            _appendSymbol(appendTo, value, fSymbols->fStandaloneNarrowMonths,
-                          fSymbols->fStandaloneNarrowMonthsCount);
-        else if (count == 4)
-            _appendSymbol(appendTo, value, fSymbols->fStandaloneMonths,
-                          fSymbols->fStandaloneMonthsCount);
-        else if (count == 3)
-            _appendSymbol(appendTo, value, fSymbols->fStandaloneShortMonths,
-                          fSymbols->fStandaloneShortMonthsCount);
-        else
-            zeroPaddingNumber(currentNumberFormat,appendTo, value + 1, count, maxIntCount);
+        {
+            int32_t isLeapMonth = (fSymbols->fLeapMonthPatterns != NULL && fSymbols->fLeapMonthPatternsCount >= DateFormatSymbols::kMonthPatternsCount)?
+                        cal.get(UCAL_IS_LEAP_MONTH, status): 0;
+            // should consolidate the next section by using arrays of pointers & counts for the right symbols...
+            if (count == 5) {
+                if (patternCharIndex == UDAT_MONTH_FIELD) {
+                    _appendSymbolWithMonthPattern(appendTo, value, fSymbols->fNarrowMonths, fSymbols->fNarrowMonthsCount,
+                            (isLeapMonth!=0)? &(fSymbols->fLeapMonthPatterns[DateFormatSymbols::kLeapMonthPatternFormatNarrow]): NULL, status);
+                } else {
+                    _appendSymbolWithMonthPattern(appendTo, value, fSymbols->fStandaloneNarrowMonths, fSymbols->fStandaloneNarrowMonthsCount,
+                            (isLeapMonth!=0)? &(fSymbols->fLeapMonthPatterns[DateFormatSymbols::kLeapMonthPatternStandaloneNarrow]): NULL, status);
+                }
+                capContextUsageType = DateFormatSymbols::kCapContextUsageMonthNarrow;
+            } else if (count == 4) {
+                if (patternCharIndex == UDAT_MONTH_FIELD) {
+                    _appendSymbolWithMonthPattern(appendTo, value, fSymbols->fMonths, fSymbols->fMonthsCount,
+                            (isLeapMonth!=0)? &(fSymbols->fLeapMonthPatterns[DateFormatSymbols::kLeapMonthPatternFormatWide]): NULL, status);
+                    capContextUsageType = DateFormatSymbols::kCapContextUsageMonthFormat;
+                } else {
+                    _appendSymbolWithMonthPattern(appendTo, value, fSymbols->fStandaloneMonths, fSymbols->fStandaloneMonthsCount,
+                            (isLeapMonth!=0)? &(fSymbols->fLeapMonthPatterns[DateFormatSymbols::kLeapMonthPatternStandaloneWide]): NULL, status);
+                    capContextUsageType = DateFormatSymbols::kCapContextUsageMonthStandalone;
+                }
+            } else if (count == 3) {
+                if (patternCharIndex == UDAT_MONTH_FIELD) {
+                    _appendSymbolWithMonthPattern(appendTo, value, fSymbols->fShortMonths, fSymbols->fShortMonthsCount,
+                            (isLeapMonth!=0)? &(fSymbols->fLeapMonthPatterns[DateFormatSymbols::kLeapMonthPatternFormatAbbrev]): NULL, status);
+                    capContextUsageType = DateFormatSymbols::kCapContextUsageMonthFormat;
+                } else {
+                    _appendSymbolWithMonthPattern(appendTo, value, fSymbols->fStandaloneShortMonths, fSymbols->fStandaloneShortMonthsCount,
+                            (isLeapMonth!=0)? &(fSymbols->fLeapMonthPatterns[DateFormatSymbols::kLeapMonthPatternStandaloneAbbrev]): NULL, status);
+                    capContextUsageType = DateFormatSymbols::kCapContextUsageMonthStandalone;
+                }
+            } else {
+                UnicodeString monthNumber;
+                zeroPaddingNumber(currentNumberFormat,monthNumber, value + 1, count, maxIntCount);
+                _appendSymbolWithMonthPattern(appendTo, 0, &monthNumber, 1,
+                        (isLeapMonth!=0)? &(fSymbols->fLeapMonthPatterns[DateFormatSymbols::kLeapMonthPatternNumeric]): NULL, status);
+            }
+        }
         break;
 
     // for "k" and "kk", write out the hour, adjusting midnight to appear as "24"
@@ -1605,23 +1692,21 @@ SimpleDateFormat::subFormat(UnicodeString &appendTo,
     case UDAT_FRACTIONAL_SECOND_FIELD:
         // Fractional seconds left-justify
         {
-            currentNumberFormat->setMinimumIntegerDigits((count > 3) ? 3 : count);
-            currentNumberFormat->setMaximumIntegerDigits(maxIntCount);
+            int32_t minDigits = (count > 3) ? 3 : count;
             if (count == 1) {
                 value /= 100;
             } else if (count == 2) {
                 value /= 10;
             }
-            FieldPosition p(0);
-            currentNumberFormat->format(value, appendTo, p);
+            zeroPaddingNumber(currentNumberFormat, appendTo, value, minDigits, maxIntCount);
             if (count > 3) {
-                currentNumberFormat->setMinimumIntegerDigits(count - 3);
-                currentNumberFormat->format((int32_t)0, appendTo, p);
+                zeroPaddingNumber(currentNumberFormat, appendTo, 0, count - 3, maxIntCount);
             }
         }
         break;
 
     // for "ee" or "e", use local numeric day-of-the-week
+    // for "EEEEEE" or "eeeeee", write out the short day-of-the-week name
     // for "EEEEE" or "eeeee", write out the narrow day-of-the-week name
     // for "EEEE" or "eeee", write out the wide day-of-the-week name
     // for "EEE" or "EE" or "E" or "eee", write out the abbreviated day-of-the-week name
@@ -1637,21 +1722,31 @@ SimpleDateFormat::subFormat(UnicodeString &appendTo,
             return;
         }
         // fall through, do not break here
+        U_FALLTHROUGH;
     case UDAT_DAY_OF_WEEK_FIELD:
-        if (count == 5)
+        if (count == 5) {
             _appendSymbol(appendTo, value, fSymbols->fNarrowWeekdays,
                           fSymbols->fNarrowWeekdaysCount);
-        else if (count == 4)
+            capContextUsageType = DateFormatSymbols::kCapContextUsageDayNarrow;
+        } else if (count == 4) {
             _appendSymbol(appendTo, value, fSymbols->fWeekdays,
                           fSymbols->fWeekdaysCount);
-        else
+            capContextUsageType = DateFormatSymbols::kCapContextUsageDayFormat;
+        } else if (count == 6) {
+            _appendSymbol(appendTo, value, fSymbols->fShorterWeekdays,
+                          fSymbols->fShorterWeekdaysCount);
+            capContextUsageType = DateFormatSymbols::kCapContextUsageDayFormat;
+        } else {
             _appendSymbol(appendTo, value, fSymbols->fShortWeekdays,
                           fSymbols->fShortWeekdaysCount);
+            capContextUsageType = DateFormatSymbols::kCapContextUsageDayFormat;
+        }
         break;
 
     // for "ccc", write out the abbreviated day-of-the-week name
     // for "cccc", write out the wide day-of-the-week name
     // for "ccccc", use the narrow day-of-the-week name
+    // for "ccccc", use the short day-of-the-week name
     case UDAT_STANDALONE_DAY_FIELD:
         if ( count < 3 ) {
             zeroPaddingNumber(currentNumberFormat,appendTo, value, 1, maxIntCount);
@@ -1663,21 +1758,43 @@ SimpleDateFormat::subFormat(UnicodeString &appendTo,
         if (U_FAILURE(status)) {
             return;
         }
-        if (count == 5)
+        if (count == 5) {
             _appendSymbol(appendTo, value, fSymbols->fStandaloneNarrowWeekdays,
                           fSymbols->fStandaloneNarrowWeekdaysCount);
-        else if (count == 4)
+            capContextUsageType = DateFormatSymbols::kCapContextUsageDayNarrow;
+        } else if (count == 4) {
             _appendSymbol(appendTo, value, fSymbols->fStandaloneWeekdays,
                           fSymbols->fStandaloneWeekdaysCount);
-        else // count == 3
+            capContextUsageType = DateFormatSymbols::kCapContextUsageDayStandalone;
+        } else if (count == 6) {
+            _appendSymbol(appendTo, value, fSymbols->fStandaloneShorterWeekdays,
+                          fSymbols->fStandaloneShorterWeekdaysCount);
+            capContextUsageType = DateFormatSymbols::kCapContextUsageDayStandalone;
+        } else { // count == 3
             _appendSymbol(appendTo, value, fSymbols->fStandaloneShortWeekdays,
                           fSymbols->fStandaloneShortWeekdaysCount);
+            capContextUsageType = DateFormatSymbols::kCapContextUsageDayStandalone;
+        }
         break;
 
-    // for and "a" symbol, write out the whole AM/PM string
+    // for "a" symbol, write out the whole AM/PM string
     case UDAT_AM_PM_FIELD:
-        _appendSymbol(appendTo, value, fSymbols->fAmPms,
-                      fSymbols->fAmPmsCount);
+        if (count < 5) {
+            _appendSymbol(appendTo, value, fSymbols->fAmPms,
+                          fSymbols->fAmPmsCount);
+        } else {
+            _appendSymbol(appendTo, value, fSymbols->fNarrowAmPms,
+                          fSymbols->fNarrowAmPmsCount);
+        }
+        break;
+
+    // if we see pattern character for UDAT_TIME_SEPARATOR_FIELD (none currently defined),
+    // write out the time separator string. Leave support in for future definition.
+    case UDAT_TIME_SEPARATOR_FIELD:
+        {
+            UnicodeString separator;
+            appendTo += fSymbols->getTimeSeparatorString(separator);
+        }
         break;
 
     // for "h" and "hh", write out the hour, adjusting noon and midnight to show up
@@ -1689,64 +1806,120 @@ SimpleDateFormat::subFormat(UnicodeString &appendTo,
             zeroPaddingNumber(currentNumberFormat,appendTo, value, count, maxIntCount);
         break;
 
-    // for the "z" symbols, we have to check our time zone data first.  If we have a
-    // localized name for the time zone, then "zzzz" / "zzz" indicate whether
-    // daylight time is in effect (long/short) and "zz" / "z" do not (long/short).
-    // If we don't have a localized time zone name,
-    // then the time zone shows up as "GMT+hh:mm" or "GMT-hh:mm" (where "hh:mm" is the
-    // offset from GMT) regardless of how many z's were in the pattern symbol
-    case UDAT_TIMEZONE_FIELD:
-    case UDAT_TIMEZONE_GENERIC_FIELD:
-    case UDAT_TIMEZONE_SPECIAL_FIELD:
+    case UDAT_TIMEZONE_FIELD: // 'z'
+    case UDAT_TIMEZONE_RFC_FIELD: // 'Z'
+    case UDAT_TIMEZONE_GENERIC_FIELD: // 'v'
+    case UDAT_TIMEZONE_SPECIAL_FIELD: // 'V'
+    case UDAT_TIMEZONE_LOCALIZED_GMT_OFFSET_FIELD: // 'O'
+    case UDAT_TIMEZONE_ISO_FIELD: // 'X'
+    case UDAT_TIMEZONE_ISO_LOCAL_FIELD: // 'x'
         {
-            UnicodeString zoneString;
-            const ZoneStringFormat *zsf = fSymbols->getZoneStringFormat();
-            if (zsf) {
+            UChar zsbuf[ZONE_NAME_U16_MAX];
+            UnicodeString zoneString(zsbuf, 0, UPRV_LENGTHOF(zsbuf));
+            const TimeZone& tz = cal.getTimeZone();
+            UDate date = cal.getTime(status);
+            const TimeZoneFormat *tzfmt = tzFormat(status);
+            if (U_SUCCESS(status)) {
                 if (patternCharIndex == UDAT_TIMEZONE_FIELD) {
                     if (count < 4) {
                         // "z", "zz", "zzz"
-                        zsf->getSpecificShortString(cal, TRUE /*commonly used only*/,
-                            zoneString, status);
+                        tzfmt->format(UTZFMT_STYLE_SPECIFIC_SHORT, tz, date, zoneString);
+                        capContextUsageType = DateFormatSymbols::kCapContextUsageMetazoneShort;
                     } else {
-                        // "zzzz"
-                        zsf->getSpecificLongString(cal, zoneString, status);
+                        // "zzzz" or longer
+                        tzfmt->format(UTZFMT_STYLE_SPECIFIC_LONG, tz, date, zoneString);
+                        capContextUsageType = DateFormatSymbols::kCapContextUsageMetazoneLong;
                     }
-                } else if (patternCharIndex == UDAT_TIMEZONE_GENERIC_FIELD) {
+                }
+                else if (patternCharIndex == UDAT_TIMEZONE_RFC_FIELD) {
+                    if (count < 4) {
+                        // "Z"
+                        tzfmt->format(UTZFMT_STYLE_ISO_BASIC_LOCAL_FULL, tz, date, zoneString);
+                    } else if (count == 5) {
+                        // "ZZZZZ"
+                        tzfmt->format(UTZFMT_STYLE_ISO_EXTENDED_FULL, tz, date, zoneString);
+                    } else {
+                        // "ZZ", "ZZZ", "ZZZZ"
+                        tzfmt->format(UTZFMT_STYLE_LOCALIZED_GMT, tz, date, zoneString);
+                    }
+                }
+                else if (patternCharIndex == UDAT_TIMEZONE_GENERIC_FIELD) {
                     if (count == 1) {
                         // "v"
-                        zsf->getGenericShortString(cal, TRUE /*commonly used only*/,
-                            zoneString, status);
+                        tzfmt->format(UTZFMT_STYLE_GENERIC_SHORT, tz, date, zoneString);
+                        capContextUsageType = DateFormatSymbols::kCapContextUsageMetazoneShort;
                     } else if (count == 4) {
                         // "vvvv"
-                        zsf->getGenericLongString(cal, zoneString, status);
+                        tzfmt->format(UTZFMT_STYLE_GENERIC_LONG, tz, date, zoneString);
+                        capContextUsageType = DateFormatSymbols::kCapContextUsageMetazoneLong;
                     }
-                } else { // patternCharIndex == UDAT_TIMEZONE_SPECIAL_FIELD
+                }
+                else if (patternCharIndex == UDAT_TIMEZONE_SPECIAL_FIELD) {
                     if (count == 1) {
                         // "V"
-                        zsf->getSpecificShortString(cal, FALSE /*ignore commonly used*/,
-                            zoneString, status);
+                        tzfmt->format(UTZFMT_STYLE_ZONE_ID_SHORT, tz, date, zoneString);
+                    } else if (count == 2) {
+                        // "VV"
+                        tzfmt->format(UTZFMT_STYLE_ZONE_ID, tz, date, zoneString);
+                    } else if (count == 3) {
+                        // "VVV"
+                        tzfmt->format(UTZFMT_STYLE_EXEMPLAR_LOCATION, tz, date, zoneString);
                     } else if (count == 4) {
                         // "VVVV"
-                        zsf->getGenericLocationString(cal, zoneString, status);
+                        tzfmt->format(UTZFMT_STYLE_GENERIC_LOCATION, tz, date, zoneString);
+                        capContextUsageType = DateFormatSymbols::kCapContextUsageZoneLong;
                     }
                 }
+                else if (patternCharIndex == UDAT_TIMEZONE_LOCALIZED_GMT_OFFSET_FIELD) {
+                    if (count == 1) {
+                        // "O"
+                        tzfmt->format(UTZFMT_STYLE_LOCALIZED_GMT_SHORT, tz, date, zoneString);
+                    } else if (count == 4) {
+                        // "OOOO"
+                        tzfmt->format(UTZFMT_STYLE_LOCALIZED_GMT, tz, date, zoneString);
+                    }
+                }
+                else if (patternCharIndex == UDAT_TIMEZONE_ISO_FIELD) {
+                    if (count == 1) {
+                        // "X"
+                        tzfmt->format(UTZFMT_STYLE_ISO_BASIC_SHORT, tz, date, zoneString);
+                    } else if (count == 2) {
+                        // "XX"
+                        tzfmt->format(UTZFMT_STYLE_ISO_BASIC_FIXED, tz, date, zoneString);
+                    } else if (count == 3) {
+                        // "XXX"
+                        tzfmt->format(UTZFMT_STYLE_ISO_EXTENDED_FIXED, tz, date, zoneString);
+                    } else if (count == 4) {
+                        // "XXXX"
+                        tzfmt->format(UTZFMT_STYLE_ISO_BASIC_FULL, tz, date, zoneString);
+                    } else if (count == 5) {
+                        // "XXXXX"
+                        tzfmt->format(UTZFMT_STYLE_ISO_EXTENDED_FULL, tz, date, zoneString);
+                    }
+                }
+                else if (patternCharIndex == UDAT_TIMEZONE_ISO_LOCAL_FIELD) {
+                    if (count == 1) {
+                        // "x"
+                        tzfmt->format(UTZFMT_STYLE_ISO_BASIC_LOCAL_SHORT, tz, date, zoneString);
+                    } else if (count == 2) {
+                        // "xx"
+                        tzfmt->format(UTZFMT_STYLE_ISO_BASIC_LOCAL_FIXED, tz, date, zoneString);
+                    } else if (count == 3) {
+                        // "xxx"
+                        tzfmt->format(UTZFMT_STYLE_ISO_EXTENDED_LOCAL_FIXED, tz, date, zoneString);
+                    } else if (count == 4) {
+                        // "xxxx"
+                        tzfmt->format(UTZFMT_STYLE_ISO_BASIC_LOCAL_FULL, tz, date, zoneString);
+                    } else if (count == 5) {
+                        // "xxxxx"
+                        tzfmt->format(UTZFMT_STYLE_ISO_EXTENDED_LOCAL_FULL, tz, date, zoneString);
+                    }
+                }
+                else {
+                    UPRV_UNREACHABLE;
+                }
             }
-            if (zoneString.isEmpty()) {
-                appendGMT(currentNumberFormat,appendTo, cal, status);
-            } else {
-                appendTo += zoneString;
-            }
-        }
-        break;
-
-    case UDAT_TIMEZONE_RFC_FIELD: // 'Z' - TIMEZONE_RFC
-        if (count < 4) {
-            // RFC822 format, must use ASCII digits
-            value = (cal.get(UCAL_ZONE_OFFSET, status) + cal.get(UCAL_DST_OFFSET, status));
-            formatRFC822TZ(appendTo, value);
-        } else {
-            // long form, localized GMT pattern
-            appendGMT(currentNumberFormat,appendTo, cal, status);
+            appendTo += zoneString;
         }
         break;
 
@@ -1772,6 +1945,140 @@ SimpleDateFormat::subFormat(UnicodeString &appendTo,
             zeroPaddingNumber(currentNumberFormat,appendTo, (value/3) + 1, count, maxIntCount);
         break;
 
+    case UDAT_AM_PM_MIDNIGHT_NOON_FIELD:
+    {
+        const UnicodeString *toAppend = NULL;
+        int32_t hour = cal.get(UCAL_HOUR_OF_DAY, status);
+
+        // Note: "midnight" can be ambiguous as to whether it refers to beginning of day or end of day.
+        // For ICU 57 output of "midnight" is temporarily suppressed.
+
+        // For "midnight" and "noon":
+        // Time, as displayed, must be exactly noon or midnight.
+        // This means minutes and seconds, if present, must be zero.
+        if ((/*hour == 0 ||*/ hour == 12) &&
+                (!fHasMinute || cal.get(UCAL_MINUTE, status) == 0) &&
+                (!fHasSecond || cal.get(UCAL_SECOND, status) == 0)) {
+            // Stealing am/pm value to use as our array index.
+            // It works out: am/midnight are both 0, pm/noon are both 1,
+            // 12 am is 12 midnight, and 12 pm is 12 noon.
+            int32_t val = cal.get(UCAL_AM_PM, status);
+
+            if (count <= 3) {
+                toAppend = &fSymbols->fAbbreviatedDayPeriods[val];
+            } else if (count == 4 || count > 5) {
+                toAppend = &fSymbols->fWideDayPeriods[val];
+            } else { // count == 5
+                toAppend = &fSymbols->fNarrowDayPeriods[val];
+            }
+        }
+
+        // toAppend is NULL if time isn't exactly midnight or noon (as displayed).
+        // toAppend is bogus if time is midnight or noon, but no localized string exists.
+        // In either case, fall back to am/pm.
+        if (toAppend == NULL || toAppend->isBogus()) {
+            // Reformat with identical arguments except ch, now changed to 'a'.
+            subFormat(appendTo, 0x61, count, capitalizationContext, fieldNum,
+                      handler, cal, status);
+        } else {
+            appendTo += *toAppend;
+        }
+
+        break;
+    }
+
+    case UDAT_FLEXIBLE_DAY_PERIOD_FIELD:
+    {
+        // TODO: Maybe fetch the DayperiodRules during initialization (instead of at the first
+        // loading of an instance) if a relevant pattern character (b or B) is used.
+        const DayPeriodRules *ruleSet = DayPeriodRules::getInstance(this->getSmpFmtLocale(), status);
+        if (U_FAILURE(status)) {
+            // Data doesn't conform to spec, therefore loading failed.
+            break;
+        }
+        if (ruleSet == NULL) {
+            // Data doesn't exist for the locale we're looking for.
+            // Falling back to am/pm.
+            subFormat(appendTo, 0x61, count, capitalizationContext, fieldNum,
+                      handler, cal, status);
+            break;
+        }
+
+        // Get current display time.
+        int32_t hour = cal.get(UCAL_HOUR_OF_DAY, status);
+        int32_t minute = 0;
+        if (fHasMinute) {
+            minute = cal.get(UCAL_MINUTE, status);
+        }
+        int32_t second = 0;
+        if (fHasSecond) {
+            second = cal.get(UCAL_SECOND, status);
+        }
+
+        // Determine day period.
+        DayPeriodRules::DayPeriod periodType;
+        if (hour == 0 && minute == 0 && second == 0 && ruleSet->hasMidnight()) {
+            periodType = DayPeriodRules::DAYPERIOD_MIDNIGHT;
+        } else if (hour == 12 && minute == 0 && second == 0 && ruleSet->hasNoon()) {
+            periodType = DayPeriodRules::DAYPERIOD_NOON;
+        } else {
+            periodType = ruleSet->getDayPeriodForHour(hour);
+        }
+
+        // Rule set exists, therefore periodType can't be UNKNOWN.
+        // Get localized string.
+        U_ASSERT(periodType != DayPeriodRules::DAYPERIOD_UNKNOWN);
+        UnicodeString *toAppend = NULL;
+        int32_t index;
+
+        // Note: "midnight" can be ambiguous as to whether it refers to beginning of day or end of day.
+        // For ICU 57 output of "midnight" is temporarily suppressed.
+
+        if (periodType != DayPeriodRules::DAYPERIOD_AM &&
+                periodType != DayPeriodRules::DAYPERIOD_PM &&
+                periodType != DayPeriodRules::DAYPERIOD_MIDNIGHT) {
+            index = (int32_t)periodType;
+            if (count <= 3) {
+                toAppend = &fSymbols->fAbbreviatedDayPeriods[index];  // i.e. short
+            } else if (count == 4 || count > 5) {
+                toAppend = &fSymbols->fWideDayPeriods[index];
+            } else {  // count == 5
+                toAppend = &fSymbols->fNarrowDayPeriods[index];
+            }
+        }
+
+        // Fallback schedule:
+        // Midnight/Noon -> General Periods -> AM/PM.
+
+        // Midnight/Noon -> General Periods.
+        if ((toAppend == NULL || toAppend->isBogus()) &&
+                (periodType == DayPeriodRules::DAYPERIOD_MIDNIGHT ||
+                 periodType == DayPeriodRules::DAYPERIOD_NOON)) {
+            periodType = ruleSet->getDayPeriodForHour(hour);
+            index = (int32_t)periodType;
+
+            if (count <= 3) {
+                toAppend = &fSymbols->fAbbreviatedDayPeriods[index];  // i.e. short
+            } else if (count == 4 || count > 5) {
+                toAppend = &fSymbols->fWideDayPeriods[index];
+            } else {  // count == 5
+                toAppend = &fSymbols->fNarrowDayPeriods[index];
+            }
+        }
+
+        // General Periods -> AM/PM.
+        if (periodType == DayPeriodRules::DAYPERIOD_AM ||
+            periodType == DayPeriodRules::DAYPERIOD_PM ||
+            toAppend->isBogus()) {
+            subFormat(appendTo, 0x61, count, capitalizationContext, fieldNum,
+                      handler, cal, status);
+        }
+        else {
+            appendTo += *toAppend;
+        }
+
+        break;
+    }
 
     // all of the other pattern symbols can be formatted as simple numbers with
     // appropriate zero padding
@@ -1779,51 +2086,202 @@ SimpleDateFormat::subFormat(UnicodeString &appendTo,
         zeroPaddingNumber(currentNumberFormat,appendTo, value, count, maxIntCount);
         break;
     }
+#if !UCONFIG_NO_BREAK_ITERATION
+    // if first field, check to see whether we need to and are able to titlecase it
+    if (fieldNum == 0 && fCapitalizationBrkIter != NULL && appendTo.length() > beginOffset &&
+            u_islower(appendTo.char32At(beginOffset))) {
+        UBool titlecase = FALSE;
+        switch (capitalizationContext) {
+            case UDISPCTX_CAPITALIZATION_FOR_BEGINNING_OF_SENTENCE:
+                titlecase = TRUE;
+                break;
+            case UDISPCTX_CAPITALIZATION_FOR_UI_LIST_OR_MENU:
+                titlecase = fSymbols->fCapitalization[capContextUsageType][0];
+                break;
+            case UDISPCTX_CAPITALIZATION_FOR_STANDALONE:
+                titlecase = fSymbols->fCapitalization[capContextUsageType][1];
+                break;
+            default:
+                // titlecase = FALSE;
+                break;
+        }
+        if (titlecase) {
+            UnicodeString firstField(appendTo, beginOffset);
+            firstField.toTitle(fCapitalizationBrkIter, fLocale, U_TITLECASE_NO_LOWERCASE | U_TITLECASE_NO_BREAK_ADJUSTMENT);
+            appendTo.replaceBetween(beginOffset, appendTo.length(), firstField);
+        }
+    }
+#endif
 
     handler.addAttribute(fgPatternIndexToDateFormatField[patternCharIndex], beginOffset, appendTo.length());
 }
 
 //----------------------------------------------------------------------
 
-NumberFormat *
-SimpleDateFormat::getNumberFormatByIndex(UDateFormatField index) const {
-    if (fNumberFormatters != NULL) {
-        return fNumberFormatters[index];
-    } else {
-        return fNumberFormat;
+void SimpleDateFormat::adoptNumberFormat(NumberFormat *formatToAdopt) {
+    fixNumberFormatForDates(*formatToAdopt);
+    freeFastNumberFormatters(); // deletes refs to fNumberFormat's symbols
+    delete fNumberFormat;
+    fNumberFormat = formatToAdopt;
+
+    // We successfully set the default number format. Now delete the overrides
+    // (can't fail).
+    if (fSharedNumberFormatters) {
+        freeSharedNumberFormatters(fSharedNumberFormatters);
+        fSharedNumberFormatters = NULL;
+    }
+
+    // Also re-compute the fast formatters.
+    UErrorCode localStatus = U_ZERO_ERROR;
+    initFastNumberFormatters(localStatus);
+}
+
+void SimpleDateFormat::adoptNumberFormat(const UnicodeString& fields, NumberFormat *formatToAdopt, UErrorCode &status){
+    fixNumberFormatForDates(*formatToAdopt);
+    LocalPointer<NumberFormat> fmt(formatToAdopt);
+    if (U_FAILURE(status)) {
+        return;
+    }
+
+    // We must ensure fSharedNumberFormatters is allocated.
+    if (fSharedNumberFormatters == NULL) {
+        fSharedNumberFormatters = allocSharedNumberFormatters();
+        if (fSharedNumberFormatters == NULL) {
+            status = U_MEMORY_ALLOCATION_ERROR;
+            return;
+        }
+    }
+    const SharedNumberFormat *newFormat = createSharedNumberFormat(fmt.orphan());
+    if (newFormat == NULL) {
+        status = U_MEMORY_ALLOCATION_ERROR;
+        return;
+    }
+    for (int i=0; i<fields.length(); i++) {
+        UChar field = fields.charAt(i);
+        // if the pattern character is unrecognized, signal an error and bail out
+        UDateFormatField patternCharIndex = DateFormatSymbols::getPatternCharIndex(field);
+        if (patternCharIndex == UDAT_FIELD_COUNT) {
+            status = U_INVALID_FORMAT_ERROR;
+            newFormat->deleteIfZeroRefCount();
+            return;
+        }
+
+        // Set the number formatter in the table
+        SharedObject::copyPtr(
+                newFormat, fSharedNumberFormatters[patternCharIndex]);
     }
+    newFormat->deleteIfZeroRefCount();
+}
+
+const NumberFormat *
+SimpleDateFormat::getNumberFormatForField(UChar field) const {
+    UDateFormatField index = DateFormatSymbols::getPatternCharIndex(field);
+    if (index == UDAT_FIELD_COUNT) {
+        return NULL;
+    }
+    return getNumberFormatByIndex(index);
 }
 
 //----------------------------------------------------------------------
 void
-SimpleDateFormat::zeroPaddingNumber(NumberFormat *currentNumberFormat,UnicodeString &appendTo,
-                                    int32_t value, int32_t minDigits, int32_t maxDigits) const
+SimpleDateFormat::zeroPaddingNumber(
+        const NumberFormat *currentNumberFormat,
+        UnicodeString &appendTo,
+        int32_t value, int32_t minDigits, int32_t maxDigits) const
 {
-    if (currentNumberFormat!=NULL) {
-        FieldPosition pos(0);
+    const number::LocalizedNumberFormatter* fastFormatter = nullptr;
+    // NOTE: This uses the heuristic that these five min/max int settings account for the vast majority
+    // of SimpleDateFormat number formatting cases at the time of writing (ICU 62).
+    if (currentNumberFormat == fNumberFormat) {
+        if (maxDigits == 10) {
+            if (minDigits == 1) {
+                fastFormatter = fFastNumberFormatters[SMPDTFMT_NF_1x10];
+            } else if (minDigits == 2) {
+                fastFormatter = fFastNumberFormatters[SMPDTFMT_NF_2x10];
+            } else if (minDigits == 3) {
+                fastFormatter = fFastNumberFormatters[SMPDTFMT_NF_3x10];
+            } else if (minDigits == 4) {
+                fastFormatter = fFastNumberFormatters[SMPDTFMT_NF_4x10];
+            }
+        } else if (maxDigits == 2) {
+            if (minDigits == 2) {
+                fastFormatter = fFastNumberFormatters[SMPDTFMT_NF_2x2];
+            }
+        }
+    }
+    if (fastFormatter != nullptr) {
+        // Can use fast path
+        number::impl::UFormattedNumberData result;
+        result.quantity.setToInt(value);
+        UErrorCode localStatus = U_ZERO_ERROR;
+        fastFormatter->formatImpl(&result, localStatus);
+        if (U_FAILURE(localStatus)) {
+            return;
+        }
+        appendTo.append(result.getStringRef().toTempUnicodeString());
+        return;
+    }
+
+    // Check for RBNF (no clone necessary)
+    auto* rbnf = dynamic_cast<const RuleBasedNumberFormat*>(currentNumberFormat);
+    if (rbnf != nullptr) {
+        FieldPosition pos(FieldPosition::DONT_CARE);
+        rbnf->format(value, appendTo, pos);  // 3rd arg is there to speed up processing
+        return;
+    }
 
-        currentNumberFormat->setMinimumIntegerDigits(minDigits);
-        currentNumberFormat->setMaximumIntegerDigits(maxDigits);
-        currentNumberFormat->format(value, appendTo, pos);  // 3rd arg is there to speed up processing
+    // Fall back to slow path (clone and mutate the NumberFormat)
+    if (currentNumberFormat != nullptr) {
+        FieldPosition pos(FieldPosition::DONT_CARE);
+        LocalPointer<NumberFormat> nf(dynamic_cast<NumberFormat*>(currentNumberFormat->clone()));
+        nf->setMinimumIntegerDigits(minDigits);
+        nf->setMaximumIntegerDigits(maxDigits);
+        nf->format(value, appendTo, pos);  // 3rd arg is there to speed up processing
     }
 }
 
 //----------------------------------------------------------------------
 
-/**
- * Format characters that indicate numeric fields.  The character
- * at index 0 is treated specially.
- */
-static const UChar NUMERIC_FORMAT_CHARS[] = {0x4D, 0x59, 0x79, 0x75, 0x64, 0x65, 0x68, 0x48, 0x6D, 0x73, 0x53, 0x44, 0x46, 0x77, 0x57, 0x6B, 0x4B, 0x00}; /* "MYyudehHmsSDFwWkK" */
-
 /**
  * Return true if the given format character, occuring count
  * times, represents a numeric field.
  */
 UBool SimpleDateFormat::isNumeric(UChar formatChar, int32_t count) {
-    UnicodeString s(NUMERIC_FORMAT_CHARS);
-    int32_t i = s.indexOf(formatChar);
-    return (i > 0 || (i == 0 && count < 3));
+    return DateFormatSymbols::isNumericPatternChar(formatChar, count);
+}
+
+UBool
+SimpleDateFormat::isAtNumericField(const UnicodeString &pattern, int32_t patternOffset) {
+    if (patternOffset >= pattern.length()) {
+        // not at any field
+        return FALSE;
+    }
+    UChar ch = pattern.charAt(patternOffset);
+    UDateFormatField f = DateFormatSymbols::getPatternCharIndex(ch);
+    if (f == UDAT_FIELD_COUNT) {
+        // not at any field
+        return FALSE;
+    }
+    int32_t i = patternOffset;
+    while (pattern.charAt(++i) == ch) {}
+    return DateFormatSymbols::isNumericField(f, i - patternOffset);
+}
+
+UBool
+SimpleDateFormat::isAfterNonNumericField(const UnicodeString &pattern, int32_t patternOffset) {
+    if (patternOffset <= 0) {
+        // not after any field
+        return FALSE;
+    }
+    UChar ch = pattern.charAt(--patternOffset);
+    UDateFormatField f = DateFormatSymbols::getPatternCharIndex(ch);
+    if (f == UDAT_FIELD_COUNT) {
+        // not after any field
+        return FALSE;
+    }
+    int32_t i = patternOffset;
+    while (pattern.charAt(--i) == ch) {}
+    return !DateFormatSymbols::isNumericField(f, patternOffset - i);
 }
 
 void
@@ -1831,16 +2289,20 @@ SimpleDateFormat::parse(const UnicodeString& text, Calendar& cal, ParsePosition&
 {
     UErrorCode status = U_ZERO_ERROR;
     int32_t pos = parsePos.getIndex();
+    if(parsePos.getIndex() < 0) {
+        parsePos.setErrorIndex(0);
+        return;
+    }
     int32_t start = pos;
 
+    // Hold the day period until everything else is parsed, because we need
+    // the hour to interpret time correctly.
+    int32_t dayPeriodInt = -1;
+
     UBool ambiguousYear[] = { FALSE };
     int32_t saveHebrewMonth = -1;
     int32_t count = 0;
-
-    UBool lenient = isLenient();
-
-    // hack, reset tztype, cast away const
-    ((SimpleDateFormat*)this)->tztype = TZTYPE_UNK;
+    UTimeZoneFormatTimeType tzTimeType = UTZFMT_TIME_TYPE_UNKNOWN;
 
     // For parsing abutting numeric fields. 'abutPat' is the
     // offset into 'pattern' of the first of 2 or more abutting
@@ -1852,28 +2314,43 @@ SimpleDateFormat::parse(const UnicodeString& text, Calendar& cal, ParsePosition&
     int32_t abutPass = 0;
     UBool inQuote = FALSE;
 
-    const UnicodeString numericFormatChars(NUMERIC_FORMAT_CHARS);
+    MessageFormat * numericLeapMonthFormatter = NULL;
 
-    TimeZone *backupTZ = NULL;
+    Calendar* calClone = NULL;
     Calendar *workCal = &cal;
     if (&cal != fCalendar && uprv_strcmp(cal.getType(), fCalendar->getType()) != 0) {
         // Different calendar type
         // We use the time/zone from the input calendar, but
         // do not use the input calendar for field calculation.
-        fCalendar->setTime(cal.getTime(status),status);
-        if (U_FAILURE(status)) {
+        calClone = fCalendar->clone();
+        if (calClone != NULL) {
+            calClone->setTime(cal.getTime(status),status);
+            if (U_FAILURE(status)) {
+                goto ExitParse;
+            }
+            calClone->setTimeZone(cal.getTimeZone());
+            workCal = calClone;
+        } else {
+            status = U_MEMORY_ALLOCATION_ERROR;
             goto ExitParse;
         }
-        backupTZ = fCalendar->getTimeZone().clone();
-        fCalendar->setTimeZone(cal.getTimeZone());
-        workCal = fCalendar;
+    }
+
+    if (fSymbols->fLeapMonthPatterns != NULL && fSymbols->fLeapMonthPatternsCount >= DateFormatSymbols::kMonthPatternsCount) {
+        numericLeapMonthFormatter = new MessageFormat(fSymbols->fLeapMonthPatterns[DateFormatSymbols::kLeapMonthPatternNumeric], fLocale, status);
+        if (numericLeapMonthFormatter == NULL) {
+             status = U_MEMORY_ALLOCATION_ERROR;
+             goto ExitParse;
+        } else if (U_FAILURE(status)) {
+             goto ExitParse; // this will delete numericLeapMonthFormatter
+        }
     }
 
     for (int32_t i=0; i<fPattern.length(); ++i) {
         UChar ch = fPattern.charAt(i);
 
         // Handle alphabetic field characters.
-        if (!inQuote && ((ch >= 0x41 && ch <= 0x5A) || (ch >= 0x61 && ch <= 0x7A))) { // [A-Za-z]
+        if (!inQuote && isSyntaxChar(ch)) {
             int32_t fieldPat = i;
 
             // Count the length of this field specifier
@@ -1886,33 +2363,12 @@ SimpleDateFormat::parse(const UnicodeString& text, Calendar& cal, ParsePosition&
 
             if (isNumeric(ch, count)) {
                 if (abutPat < 0) {
-                    // Determine if there is an abutting numeric field.  For
-                    // most fields we can just look at the next characters,
-                    // but the 'm' field is either numeric or text,
-                    // depending on the count, so we have to look ahead for
-                    // that field.
-                    if ((i+1)<fPattern.length()) {
-                        UBool abutting;
-                        UChar nextCh = fPattern.charAt(i+1);
-                        int32_t k = numericFormatChars.indexOf(nextCh);
-                        if (k == 0) {
-                            int32_t j = i+2;
-                            while (j<fPattern.length() &&
-                                   fPattern.charAt(j) == nextCh) {
-                                ++j;
-                            }
-                            abutting = (j-i) < 4; // nextCount < 3
-                        } else {
-                            abutting = k > 0;
-                        }
-
-                        // Record the start of a set of abutting numeric
-                        // fields.
-                        if (abutting) {
-                            abutPat = fieldPat;
-                            abutStart = pos;
-                            abutPass = 0;
-                        }
+                    // Determine if there is an abutting numeric field.
+                    // Record the start of a set of abutting numeric fields.
+                    if (isAtNumericField(fPattern, i + 1)) {
+                        abutPat = fieldPat;
+                        abutStart = pos;
+                        abutPass = 0;
                     }
                 }
             } else {
@@ -1940,7 +2396,7 @@ SimpleDateFormat::parse(const UnicodeString& text, Calendar& cal, ParsePosition&
                 }
 
                 pos = subParse(text, pos, ch, count,
-                               TRUE, FALSE, ambiguousYear, saveHebrewMonth, *workCal, i);
+                               TRUE, FALSE, ambiguousYear, saveHebrewMonth, *workCal, i, numericLeapMonthFormatter, &tzTimeType);
 
                 // If the parse fails anywhere in the run, back up to the
                 // start of the run and retry.
@@ -1953,24 +2409,25 @@ SimpleDateFormat::parse(const UnicodeString& text, Calendar& cal, ParsePosition&
 
             // Handle non-numeric fields and non-abutting numeric
             // fields.
-            else {
+            else if (ch != 0x6C) { // pattern char 'l' (SMALL LETTER L) just gets ignored
                 int32_t s = subParse(text, pos, ch, count,
-                               FALSE, TRUE, ambiguousYear, saveHebrewMonth, *workCal, i);
+                               FALSE, TRUE, ambiguousYear, saveHebrewMonth, *workCal, i, numericLeapMonthFormatter, &tzTimeType, &dayPeriodInt);
 
                 if (s == -pos-1) {
                     // era not present, in special cases allow this to continue
-                    s++;
+                    // from the position where the era was expected
+                    s = pos;
 
                     if (i+1 < fPattern.length()) {
                         // move to next pattern character
-                        UChar ch = fPattern.charAt(i+1);
+                        UChar c = fPattern.charAt(i+1);
 
                         // check for whitespace
-                        if (uprv_isRuleWhiteSpace(ch)) {
+                        if (PatternProps::isWhiteSpace(c)) {
                             i++;
                             // Advance over run in pattern
                             while ((i+1)<fPattern.length() &&
-                                   uprv_isRuleWhiteSpace(fPattern.charAt(i+1))) {
+                                   PatternProps::isWhiteSpace(fPattern.charAt(i+1))) {
                                 ++i;
                             }
                         }
@@ -1990,16 +2447,94 @@ SimpleDateFormat::parse(const UnicodeString& text, Calendar& cal, ParsePosition&
         else {
 
             abutPat = -1; // End of any abutting fields
-            
-            if (! matchLiterals(fPattern, i, text, pos, lenient)) {
+
+            if (! matchLiterals(fPattern, i, text, pos, getBooleanAttribute(UDAT_PARSE_ALLOW_WHITESPACE, status), getBooleanAttribute(UDAT_PARSE_PARTIAL_LITERAL_MATCH, status), isLenient())) {
                 status = U_PARSE_ERROR;
                 goto ExitParse;
             }
         }
     }
 
-    // At this point the fields of Calendar have been set.  Calendar
-    // will fill in default values for missing fields when the time
+    // Special hack for trailing "." after non-numeric field.
+    if (text.charAt(pos) == 0x2e && getBooleanAttribute(UDAT_PARSE_ALLOW_WHITESPACE, status)) {
+        // only do if the last field is not numeric
+        if (isAfterNonNumericField(fPattern, fPattern.length())) {
+            pos++; // skip the extra "."
+        }
+    }
+
+    // If dayPeriod is set, use it in conjunction with hour-of-day to determine am/pm.
+    if (dayPeriodInt >= 0) {
+        DayPeriodRules::DayPeriod dayPeriod = (DayPeriodRules::DayPeriod)dayPeriodInt;
+        const DayPeriodRules *ruleSet = DayPeriodRules::getInstance(this->getSmpFmtLocale(), status);
+
+        if (!cal.isSet(UCAL_HOUR) && !cal.isSet(UCAL_HOUR_OF_DAY)) {
+            // If hour is not set, set time to the midpoint of current day period, overwriting
+            // minutes if it's set.
+            double midPoint = ruleSet->getMidPointForDayPeriod(dayPeriod, status);
+
+            // If we can't get midPoint we do nothing.
+            if (U_SUCCESS(status)) {
+                // Truncate midPoint toward zero to get the hour.
+                // Any leftover means it was a half-hour.
+                int32_t midPointHour = (int32_t) midPoint;
+                int32_t midPointMinute = (midPoint - midPointHour) > 0 ? 30 : 0;
+
+                // No need to set am/pm because hour-of-day is set last therefore takes precedence.
+                cal.set(UCAL_HOUR_OF_DAY, midPointHour);
+                cal.set(UCAL_MINUTE, midPointMinute);
+            }
+        } else {
+            int hourOfDay;
+
+            if (cal.isSet(UCAL_HOUR_OF_DAY)) {  // Hour is parsed in 24-hour format.
+                hourOfDay = cal.get(UCAL_HOUR_OF_DAY, status);
+            } else {  // Hour is parsed in 12-hour format.
+                hourOfDay = cal.get(UCAL_HOUR, status);
+                // cal.get() turns 12 to 0 for 12-hour time; change 0 to 12
+                // so 0 unambiguously means a 24-hour time from above.
+                if (hourOfDay == 0) { hourOfDay = 12; }
+            }
+            U_ASSERT(0 <= hourOfDay && hourOfDay <= 23);
+
+
+            // If hour-of-day is 0 or 13 thru 23 then input time in unambiguously in 24-hour format.
+            if (hourOfDay == 0 || (13 <= hourOfDay && hourOfDay <= 23)) {
+                // Make hour-of-day take precedence over (hour + am/pm) by setting it again.
+                cal.set(UCAL_HOUR_OF_DAY, hourOfDay);
+            } else {
+                // We have a 12-hour time and need to choose between am and pm.
+                // Behave as if dayPeriod spanned 6 hours each way from its center point.
+                // This will parse correctly for consistent time + period (e.g. 10 at night) as
+                // well as provide a reasonable recovery for inconsistent time + period (e.g.
+                // 9 in the afternoon).
+
+                // Assume current time is in the AM.
+                // - Change 12 back to 0 for easier handling of 12am.
+                // - Append minutes as fractional hours because e.g. 8:15 and 8:45 could be parsed
+                // into different half-days if center of dayPeriod is at 14:30.
+                // - cal.get(MINUTE) will return 0 if MINUTE is unset, which works.
+                if (hourOfDay == 12) { hourOfDay = 0; }
+                double currentHour = hourOfDay + (cal.get(UCAL_MINUTE, status)) / 60.0;
+                double midPointHour = ruleSet->getMidPointForDayPeriod(dayPeriod, status);
+
+                if (U_SUCCESS(status)) {
+                    double hoursAheadMidPoint = currentHour - midPointHour;
+
+                    // Assume current time is in the AM.
+                    if (-6 <= hoursAheadMidPoint && hoursAheadMidPoint < 6) {
+                        // Assumption holds; set time as such.
+                        cal.set(UCAL_AM_PM, 0);
+                    } else {
+                        cal.set(UCAL_AM_PM, 1);
+                    }
+                }
+            }
+        }
+    }
+
+    // At this point the fields of Calendar have been set.  Calendar
+    // will fill in default values for missing fields when the time
     // is computed.
 
     parsePos.setIndex(pos);
@@ -2026,7 +2561,7 @@ SimpleDateFormat::parse(const UnicodeString& text, Calendar& cal, ParsePosition&
     // when the two-digit year is equal to the start year, and thus might fall at the
     // front or the back of the default century.  This only works because we adjust
     // the year correctly to start with in other cases -- see subParse().
-    if (ambiguousYear[0] || tztype != TZTYPE_UNK) // If this is true then the two-digit year == the default start year
+    if (ambiguousYear[0] || tzTimeType != UTZFMT_TIME_TYPE_UNKNOWN) // If this is true then the two-digit year == the default start year
     {
         // We need a copy of the fields, and we need to avoid triggering a call to
         // complete(), which will recalculate the fields.  Since we can't access
@@ -2049,7 +2584,7 @@ SimpleDateFormat::parse(const UnicodeString& text, Calendar& cal, ParsePosition&
             delete copy;
         }
 
-        if (tztype != TZTYPE_UNK) {
+        if (tzTimeType != UTZFMT_TIME_TYPE_UNKNOWN) {
             copy = cal.clone();
             // Check for failed cloning.
             if (copy == NULL) {
@@ -2075,7 +2610,7 @@ SimpleDateFormat::parse(const UnicodeString& text, Calendar& cal, ParsePosition&
             // matches the rule used by the parsed time zone.
             int32_t raw, dst;
             if (btz != NULL) {
-                if (tztype == TZTYPE_STD) {
+                if (tzTimeType == UTZFMT_TIME_TYPE_STANDARD) {
                     btz->getOffsetFromLocal(localMillis,
                         BasicTimeZone::kStandard, BasicTimeZone::kStandard, raw, dst, status);
                 } else {
@@ -2090,7 +2625,7 @@ SimpleDateFormat::parse(const UnicodeString& text, Calendar& cal, ParsePosition&
 
             // Now, compare the results with parsed type, either standard or daylight saving time
             int32_t resolvedSavings = dst;
-            if (tztype == TZTYPE_STD) {
+            if (tzTimeType == UTZFMT_TIME_TYPE_STANDARD) {
                 if (dst != 0) {
                     // Override DST_OFFSET = 0 in the result calendar
                     resolvedSavings = 0;
@@ -2166,9 +2701,11 @@ ExitParse:
         cal.setTime(workCal->getTime(status), status);
     }
 
-    // Restore the original time zone if required
-    if (backupTZ != NULL) {
-        fCalendar->adoptTimeZone(backupTZ);
+    if (numericLeapMonthFormatter != NULL) {
+        delete numericLeapMonthFormatter;
+    }
+    if (calClone != NULL) {
+        delete calClone;
     }
 
     // If any Calendar calls failed, we pretend that we
@@ -2180,23 +2717,13 @@ ExitParse:
     }
 }
 
-UDate
-SimpleDateFormat::parse( const UnicodeString& text,
-                         ParsePosition& pos) const {
-    // redefined here because the other parse() function hides this function's
-    // cunterpart on DateFormat
-    return DateFormat::parse(text, pos);
-}
-
-UDate
-SimpleDateFormat::parse(const UnicodeString& text, UErrorCode& status) const
-{
-    // redefined here because the other parse() function hides this function's
-    // counterpart on DateFormat
-    return DateFormat::parse(text, status);
-}
 //----------------------------------------------------------------------
 
+static int32_t
+matchStringWithOptionalDot(const UnicodeString &text,
+                            int32_t index,
+                            const UnicodeString &data);
+
 int32_t SimpleDateFormat::matchQuarterString(const UnicodeString& text,
                               int32_t start,
                               UCalendarDateFields field,
@@ -2212,86 +2739,70 @@ int32_t SimpleDateFormat::matchQuarterString(const UnicodeString& text,
     // We keep track of the longest match, and return that.  Note that this
     // unfortunately requires us to test all array elements.
     int32_t bestMatchLength = 0, bestMatch = -1;
+    UnicodeString bestMatchName;
 
-    // {sfb} kludge to support case-insensitive comparison
-    // {markus 2002oct11} do not just use caseCompareBetween because we do not know
-    // the length of the match after case folding
-    // {alan 20040607} don't case change the whole string, since the length
-    // can change
-    // TODO we need a case-insensitive startsWith function
-    UnicodeString lcase, lcaseText;
-    text.extract(start, INT32_MAX, lcaseText);
-    lcaseText.foldCase();
-
-    for (; i < count; ++i)
-    {
-        // Always compare if we have no match yet; otherwise only compare
-        // against potentially better matches (longer strings).
-
-        lcase.fastCopyFrom(data[i]).foldCase();
-        int32_t length = lcase.length();
-
-        if (length > bestMatchLength &&
-            lcaseText.compareBetween(0, length, lcase, 0, length) == 0)
-        {
+    for (; i < count; ++i) {
+        int32_t matchLength = 0;
+        if ((matchLength = matchStringWithOptionalDot(text, start, data[i])) > bestMatchLength) {
+            bestMatchLength = matchLength;
             bestMatch = i;
-            bestMatchLength = length;
         }
     }
-    if (bestMatch >= 0)
-    {
+
+    if (bestMatch >= 0) {
         cal.set(field, bestMatch * 3);
+        return start + bestMatchLength;
+    }
 
-        // Once we have a match, we have to determine the length of the
-        // original source string.  This will usually be == the length of
-        // the case folded string, but it may differ (e.g. sharp s).
-        lcase.fastCopyFrom(data[bestMatch]).foldCase();
+    return -start;
+}
 
-        // Most of the time, the length will be the same as the length
-        // of the string from the locale data.  Sometimes it will be
-        // different, in which case we will have to figure it out by
-        // adding a character at a time, until we have a match.  We do
-        // this all in one loop, where we try 'len' first (at index
-        // i==0).
-        int32_t len = data[bestMatch].length(); // 99+% of the time
-        int32_t n = text.length() - start;
-        for (i=0; i<=n; ++i) {
-            int32_t j=i;
-            if (i == 0) {
-                j = len;
-            } else if (i == len) {
-                continue; // already tried this when i was 0
-            }
-            text.extract(start, j, lcaseText);
-            lcaseText.foldCase();
-            if (lcase == lcaseText) {
-                return start + j;
-            }
+int32_t SimpleDateFormat::matchDayPeriodStrings(const UnicodeString& text, int32_t start,
+                              const UnicodeString* data, int32_t dataCount,
+                              int32_t &dayPeriod) const
+{
+
+    int32_t bestMatchLength = 0, bestMatch = -1;
+
+    for (int32_t i = 0; i < dataCount; ++i) {
+        int32_t matchLength = 0;
+        if ((matchLength = matchStringWithOptionalDot(text, start, data[i])) > bestMatchLength) {
+            bestMatchLength = matchLength;
+            bestMatch = i;
         }
     }
 
+    if (bestMatch >= 0) {
+        dayPeriod = bestMatch;
+        return start + bestMatchLength;
+    }
+
     return -start;
 }
 
 //----------------------------------------------------------------------
+#define IS_BIDI_MARK(c) (c==0x200E || c==0x200F || c==0x061C) 
+
 UBool SimpleDateFormat::matchLiterals(const UnicodeString &pattern,
                                       int32_t &patternOffset,
                                       const UnicodeString &text,
                                       int32_t &textOffset,
-                                      UBool lenient)
+                                      UBool whitespaceLenient,
+                                      UBool partialMatchLenient,
+                                      UBool oldLeniency)
 {
     UBool inQuote = FALSE;
     UnicodeString literal;
     int32_t i = patternOffset;
-    
+
     // scan pattern looking for contiguous literal characters
     for ( ; i < pattern.length(); i += 1) {
         UChar ch = pattern.charAt(i);
-        
-        if (!inQuote && ((ch >= 0x41 && ch <= 0x5A) || (ch >= 0x61 && ch <= 0x7A))) { // unquoted [A-Za-z]
+
+        if (!inQuote && isSyntaxChar(ch)) {
             break;
         }
-        
+
         if (ch == QUOTE) {
             // Match a quote literal ('') inside OR outside of quotes
             if ((i + 1) < pattern.length() && pattern.charAt(i + 1) == QUOTE) {
@@ -2301,102 +2812,145 @@ UBool SimpleDateFormat::matchLiterals(const UnicodeString &pattern,
                 continue;
             }
         }
-        
-        literal += ch;
+
+        if (!IS_BIDI_MARK(ch)) {
+            literal += ch;
+        }
     }
-    
-    // at this point, literal contains the literal text
+
+    // at this point, literal contains the pattern literal text (without bidi marks)
     // and i is the index of the next non-literal pattern character.
     int32_t p;
     int32_t t = textOffset;
-    
-    if (lenient) {
-        // trim leading, trailing whitespace from
-        // the literal text
+
+    if (whitespaceLenient) {
+        // trim leading, trailing whitespace from the pattern literal
         literal.trim();
-        
-        // ignore any leading whitespace in the text
-        while (t < text.length() && u_isWhitespace(text.charAt(t))) {
+
+        // ignore any leading whitespace (or bidi marks) in the text
+        while (t < text.length()) {
+            UChar ch = text.charAt(t);
+            if (!u_isWhitespace(ch) && !IS_BIDI_MARK(ch)) {
+                break;
+            }
             t += 1;
         }
     }
-        
-    for (p = 0; p < literal.length() && t < text.length(); p += 1, t += 1) {
+
+    // Get ignorables, move up here
+    const  UnicodeSet *ignorables = NULL;
+    UDateFormatField patternCharIndex = DateFormatSymbols::getPatternCharIndex(pattern.charAt(i));
+    if (patternCharIndex != UDAT_FIELD_COUNT) {
+        ignorables = SimpleDateFormatStaticSets::getIgnorables(patternCharIndex);
+    }
+
+    for (p = 0; p < literal.length() && t < text.length();) {
         UBool needWhitespace = FALSE;
-        
-        while (p < literal.length() && uprv_isRuleWhiteSpace(literal.charAt(p))) {
+
+        // Skip any whitespace at current position in pattern,
+        // but remember whether we found whitespace in the pattern
+        // (we already deleted any bidi marks in the pattern).
+        while (p < literal.length() && PatternProps::isWhiteSpace(literal.charAt(p))) {
             needWhitespace = TRUE;
             p += 1;
         }
-        
+
+        // If the pattern has whitespace at this point, skip it in text as well
+        // (if the text does not have any, that may be an error for strict parsing)
         if (needWhitespace) {
-            int32_t tStart = t;
+            UBool whitespaceInText = FALSE;
             
+            // Skip any whitespace (or bidi marks) at current position in text,
+            // but remember whether we found whitespace in the text at this point.
             while (t < text.length()) {
                 UChar tch = text.charAt(t);
-                
-                if (!u_isUWhiteSpace(tch) && !uprv_isRuleWhiteSpace(tch)) {
+                if (u_isUWhiteSpace(tch) || PatternProps::isWhiteSpace(tch)) {
+                    whitespaceInText = TRUE;
+                } else if (!IS_BIDI_MARK(tch)) {
                     break;
                 }
-                
+
                 t += 1;
             }
-            
+
             // TODO: should we require internal spaces
             // in lenient mode? (There won't be any
             // leading or trailing spaces)
-            if (!lenient && t == tStart) {
+            if (!whitespaceLenient && !whitespaceInText) {
                 // didn't find matching whitespace:
                 // an error in strict mode
                 return FALSE;
             }
-            
+
             // In strict mode, this run of whitespace
             // may have been at the end.
             if (p >= literal.length()) {
                 break;
             }
+        } else {
+            // Still need to skip any bidi marks in the text
+            while (t < text.length() && IS_BIDI_MARK(text.charAt(t))) {
+                ++t;
+            }
         }
-        
         if (t >= text.length() || literal.charAt(p) != text.charAt(t)) {
             // Ran out of text, or found a non-matching character:
             // OK in lenient mode, an error in strict mode.
-            if (lenient) {
+            if (whitespaceLenient) {
+                if (t == textOffset && text.charAt(t) == 0x2e &&
+                        isAfterNonNumericField(pattern, patternOffset)) {
+                    // Lenient mode and the literal input text begins with a "." and
+                    // we are after a non-numeric field: We skip the "."
+                    ++t;
+                    continue;  // Do not update p.
+                }
+                // if it is actual whitespace and we're whitespace lenient it's OK
+
+                UChar wsc = text.charAt(t);
+                if(PatternProps::isWhiteSpace(wsc)) {
+                    // Lenient mode and it's just whitespace we skip it
+                    ++t;
+                    continue;  // Do not update p.
+                }
+            }
+            // hack around oldleniency being a bit of a catch-all bucket and we're just adding support specifically for paritial matches
+            // This fix is for http://bugs.icu-project.org/trac/ticket/10855 and adds "&& oldLeniency"
+            //if(partialMatchLenient && oldLeniency) {
+            // However this causes problems for Apple, see <rdar://problem/20692829> regressions in Chinese date parsing
+            // We don't want to go back to just "if(partialMatchLenient)" as in ICU 53, that is too lenient for strict mode.
+            // So if the pattern character is in the separator set, we allow the text character to be in that set or be an alpha char.
+            if( partialMatchLenient && ( oldLeniency ||
+                    ( ignorables != NULL && ignorables->contains(literal.charAt(p)) && (ignorables->contains(text.charAt(t)) || u_isalpha(text.charAt(t))) ) )
+              ) {
                 break;
             }
-            
+
             return FALSE;
         }
+        ++p;
+        ++t;
     }
-    
+
     // At this point if we're in strict mode we have a complete match.
     // If we're in lenient mode we may have a partial match, or no
     // match at all.
     if (p <= 0) {
         // no match. Pretend it matched a run of whitespace
         // and ignorables in the text.
-        const  UnicodeSet *ignorables = NULL;
-        UChar *patternCharPtr = u_strchr(DateFormatSymbols::getPatternUChars(), pattern.charAt(i));
-        
-        if (patternCharPtr != NULL) {
-            UDateFormatField patternCharIndex = (UDateFormatField) (patternCharPtr - DateFormatSymbols::getPatternUChars());
-            
-            ignorables = SimpleDateFormatStaticSets::getIgnorables(patternCharIndex);
-        }
-        
+
         for (t = textOffset; t < text.length(); t += 1) {
             UChar ch = text.charAt(t);
-            
-            if (ignorables == NULL || !ignorables->contains(ch)) {
+
+            if (!IS_BIDI_MARK(ch) && (ignorables == NULL || !ignorables->contains(ch))) {
                 break;
             }
         }
     }
-    
+
     // if we get here, we've got a complete match.
     patternOffset = i - 1;
     textOffset = t;
-    
+
     return TRUE;
 }
 
@@ -2407,6 +2961,7 @@ int32_t SimpleDateFormat::matchString(const UnicodeString& text,
                               UCalendarDateFields field,
                               const UnicodeString* data,
                               int32_t dataCount,
+                              const UnicodeString* monthPattern,
                               Calendar& cal) const
 {
     int32_t i = 0;
@@ -2419,73 +2974,76 @@ int32_t SimpleDateFormat::matchString(const UnicodeString& text,
     // We keep track of the longest match, and return that.  Note that this
     // unfortunately requires us to test all array elements.
     int32_t bestMatchLength = 0, bestMatch = -1;
+    UnicodeString bestMatchName;
+    int32_t isLeapMonth = 0;
 
-    // {sfb} kludge to support case-insensitive comparison
-    // {markus 2002oct11} do not just use caseCompareBetween because we do not know
-    // the length of the match after case folding
-    // {alan 20040607} don't case change the whole string, since the length
-    // can change
-    // TODO we need a case-insensitive startsWith function
-    UnicodeString lcase, lcaseText;
-    text.extract(start, INT32_MAX, lcaseText);
-    lcaseText.foldCase();
-
-    for (; i < count; ++i)
-    {
-        // Always compare if we have no match yet; otherwise only compare
-        // against potentially better matches (longer strings).
-
-        lcase.fastCopyFrom(data[i]).foldCase();
-        int32_t length = lcase.length();
-
-        if (length > bestMatchLength &&
-            lcaseText.compareBetween(0, length, lcase, 0, length) == 0)
-        {
+    for (; i < count; ++i) {
+        int32_t matchLen = 0;
+        if ((matchLen = matchStringWithOptionalDot(text, start, data[i])) > bestMatchLength) {
             bestMatch = i;
-            bestMatchLength = length;
-        }
-    }
-    if (bestMatch >= 0)
-    {
-        // Adjustment for Hebrew Calendar month Adar II
-        if (!strcmp(cal.getType(),"hebrew") && field==UCAL_MONTH && bestMatch==13) {
-            cal.set(field,6);
-        }
-        else {
-            cal.set(field, bestMatch);
+            bestMatchLength = matchLen;
         }
 
-        // Once we have a match, we have to determine the length of the
-        // original source string.  This will usually be == the length of
-        // the case folded string, but it may differ (e.g. sharp s).
-        lcase.fastCopyFrom(data[bestMatch]).foldCase();
+        if (monthPattern != NULL) {
+            UErrorCode status = U_ZERO_ERROR;
+            UnicodeString leapMonthName;
+            SimpleFormatter(*monthPattern, 1, 1, status).format(data[i], leapMonthName, status);
+            if (U_SUCCESS(status)) {
+                if ((matchLen = matchStringWithOptionalDot(text, start, leapMonthName)) > bestMatchLength) {
+                    bestMatch = i;
+                    bestMatchLength = matchLen;
+                    isLeapMonth = 1;
+                }
+            }
+        }
+    }
 
-        // Most of the time, the length will be the same as the length
-        // of the string from the locale data.  Sometimes it will be
-        // different, in which case we will have to figure it out by
-        // adding a character at a time, until we have a match.  We do
-        // this all in one loop, where we try 'len' first (at index
-        // i==0).
-        int32_t len = data[bestMatch].length(); // 99+% of the time
-        int32_t n = text.length() - start;
-        for (i=0; i<=n; ++i) {
-            int32_t j=i;
-            if (i == 0) {
-                j = len;
-            } else if (i == len) {
-                continue; // already tried this when i was 0
+    if (bestMatch >= 0) {
+        if (field < UCAL_FIELD_COUNT) {
+            // Adjustment for Hebrew Calendar month Adar II
+            if (!strcmp(cal.getType(),"hebrew") && field==UCAL_MONTH && bestMatch==13) {
+                cal.set(field,6);
+            } else {
+                if (field == UCAL_YEAR) {
+                    bestMatch++; // only get here for cyclic year names, which match 1-based years 1-60
+                }
+                cal.set(field, bestMatch);
             }
-            text.extract(start, j, lcaseText);
-            lcaseText.foldCase();
-            if (lcase == lcaseText) {
-                return start + j;
+            if (monthPattern != NULL) {
+                cal.set(UCAL_IS_LEAP_MONTH, isLeapMonth);
             }
         }
+
+        return start + bestMatchLength;
     }
 
     return -start;
 }
 
+static int32_t
+matchStringWithOptionalDot(const UnicodeString &text,
+                            int32_t index,
+                            const UnicodeString &data) {
+    UErrorCode sts = U_ZERO_ERROR;
+    int32_t matchLenText = 0;
+    int32_t matchLenData = 0;
+
+    u_caseInsensitivePrefixMatch(text.getBuffer() + index, text.length() - index,
+                                 data.getBuffer(), data.length(),
+                                 0 /* default case option */,
+                                 &matchLenText, &matchLenData,
+                                 &sts);
+    U_ASSERT (U_SUCCESS(sts));
+
+    if (matchLenData == data.length() /* normal match */
+        || (data.charAt(data.length() - 1) == 0x2e
+            && matchLenData == data.length() - 1 /* match without trailing dot */)) {
+        return matchLenText;
+    }
+
+    return 0;
+}
+
 //----------------------------------------------------------------------
 
 void
@@ -2497,40 +3055,43 @@ SimpleDateFormat::set2DigitYearStart(UDate d, UErrorCode& status)
 /**
  * Private member function that converts the parsed date strings into
  * timeFields. Returns -start (for ParsePosition) if failed.
- * @param text the time text to be parsed.
- * @param start where to start parsing.
- * @param ch the pattern character for the date field text to be parsed.
- * @param count the count of a pattern character.
- * @return the new start position if matching succeeded; a negative number
- * indicating matching failure, otherwise.
  */
 int32_t SimpleDateFormat::subParse(const UnicodeString& text, int32_t& start, UChar ch, int32_t count,
                            UBool obeyCount, UBool allowNegative, UBool ambiguousYear[], int32_t& saveHebrewMonth, Calendar& cal,
-                           int32_t patLoc) const
+                           int32_t patLoc, MessageFormat * numericLeapMonthFormatter, UTimeZoneFormatTimeType *tzTimeType,
+                           int32_t *dayPeriod) const
 {
     Formattable number;
     int32_t value = 0;
     int32_t i;
     int32_t ps = 0;
+    UErrorCode status = U_ZERO_ERROR;
     ParsePosition pos(0);
-    UDateFormatField patternCharIndex;
-    NumberFormat *currentNumberFormat;
+    UDateFormatField patternCharIndex = DateFormatSymbols::getPatternCharIndex(ch);
+    const NumberFormat *currentNumberFormat;
     UnicodeString temp;
-    UChar *patternCharPtr = u_strchr(DateFormatSymbols::getPatternUChars(), ch);
-    UBool lenient = isLenient();
+    int32_t tzParseOptions = (isLenient())? UTZFMT_PARSE_OPTION_ALL_STYLES: UTZFMT_PARSE_OPTION_NONE;
     UBool gotNumber = FALSE;
 
 #if defined (U_DEBUG_CAL)
     //fprintf(stderr, "%s:%d - [%c]  st=%d \n", __FILE__, __LINE__, (char) ch, start);
 #endif
 
-    if (patternCharPtr == NULL) {
+    if (patternCharIndex == UDAT_FIELD_COUNT) {
         return -start;
     }
 
-    patternCharIndex = (UDateFormatField)(patternCharPtr - DateFormatSymbols::getPatternUChars());
     currentNumberFormat = getNumberFormatByIndex(patternCharIndex);
-    UCalendarDateFields field = fgPatternIndexToCalendarField[patternCharIndex];
+    if (currentNumberFormat == NULL) {
+        return -start;
+    }
+    UCalendarDateFields field = fgPatternIndexToCalendarField[patternCharIndex]; // UCAL_FIELD_COUNT if irrelevant
+    UnicodeString hebr("hebr", 4, US_INV);
+
+    if (numericLeapMonthFormatter != NULL) {
+        numericLeapMonthFormatter->setFormats((const Format **)&currentNumberFormat, 1);
+    }
+    UBool isChineseCalendar = (uprv_strcmp(cal.getType(),"chinese") == 0 || uprv_strcmp(cal.getType(),"dangi") == 0);
 
     // If there are any spaces here, skip over them.  If we hit the end
     // of the string, then fail.
@@ -2538,59 +3099,75 @@ int32_t SimpleDateFormat::subParse(const UnicodeString& text, int32_t& start, UC
         if (start >= text.length()) {
             return -start;
         }
-        
         UChar32 c = text.char32At(start);
-        if (!u_isUWhiteSpace(c) /*||*/ && !uprv_isRuleWhiteSpace(c)) {
+        if (!u_isUWhiteSpace(c) /*||*/ && !PatternProps::isWhiteSpace(c)) {
             break;
         }
-        
-        start += UTF_CHAR_LENGTH(c);
+        start += U16_LENGTH(c);
     }
-    
     pos.setIndex(start);
 
     // We handle a few special cases here where we need to parse
     // a number value.  We handle further, more generic cases below.  We need
     // to handle some of them here because some fields require extra processing on
     // the parsed value.
-    if (patternCharIndex == UDAT_HOUR_OF_DAY1_FIELD ||
-        patternCharIndex == UDAT_HOUR_OF_DAY0_FIELD ||
-        patternCharIndex == UDAT_HOUR1_FIELD ||
-        patternCharIndex == UDAT_HOUR0_FIELD ||
-        patternCharIndex == UDAT_DOW_LOCAL_FIELD ||
-        patternCharIndex == UDAT_STANDALONE_DAY_FIELD ||
-        patternCharIndex == UDAT_MONTH_FIELD ||
-        patternCharIndex == UDAT_STANDALONE_MONTH_FIELD ||
-        patternCharIndex == UDAT_QUARTER_FIELD ||
-        patternCharIndex == UDAT_STANDALONE_QUARTER_FIELD ||
-        patternCharIndex == UDAT_YEAR_FIELD ||
-        patternCharIndex == UDAT_YEAR_WOY_FIELD ||
-        patternCharIndex == UDAT_FRACTIONAL_SECOND_FIELD)
+    if (patternCharIndex == UDAT_HOUR_OF_DAY1_FIELD ||                       // k
+        patternCharIndex == UDAT_HOUR_OF_DAY0_FIELD ||                       // H
+        patternCharIndex == UDAT_HOUR1_FIELD ||                              // h
+        patternCharIndex == UDAT_HOUR0_FIELD ||                              // K
+        (patternCharIndex == UDAT_DOW_LOCAL_FIELD && count <= 2) ||          // e
+        (patternCharIndex == UDAT_STANDALONE_DAY_FIELD && count <= 2) ||     // c
+        (patternCharIndex == UDAT_MONTH_FIELD && count <= 2) ||              // M
+        (patternCharIndex == UDAT_STANDALONE_MONTH_FIELD && count <= 2) ||   // L
+        (patternCharIndex == UDAT_QUARTER_FIELD && count <= 2) ||            // Q
+        (patternCharIndex == UDAT_STANDALONE_QUARTER_FIELD && count <= 2) || // q
+        patternCharIndex == UDAT_YEAR_FIELD ||                               // y
+        patternCharIndex == UDAT_YEAR_WOY_FIELD ||                           // Y
+        patternCharIndex == UDAT_YEAR_NAME_FIELD ||                          // U (falls back to numeric)
+        (patternCharIndex == UDAT_ERA_FIELD && isChineseCalendar) ||         // G
+        patternCharIndex == UDAT_FRACTIONAL_SECOND_FIELD)                    // S
     {
         int32_t parseStart = pos.getIndex();
         // It would be good to unify this with the obeyCount logic below,
         // but that's going to be difficult.
         const UnicodeString* src;
 
-        if (obeyCount) {
-            if ((start+count) > text.length()) {
-                return -start;
+        UBool parsedNumericLeapMonth = FALSE;
+        if (numericLeapMonthFormatter != NULL && (patternCharIndex == UDAT_MONTH_FIELD || patternCharIndex == UDAT_STANDALONE_MONTH_FIELD)) {
+            int32_t argCount;
+            Formattable * args = numericLeapMonthFormatter->parse(text, pos, argCount);
+            if (args != NULL && argCount == 1 && pos.getIndex() > parseStart && args[0].isNumeric()) {
+                parsedNumericLeapMonth = TRUE;
+                number.setLong(args[0].getLong());
+                cal.set(UCAL_IS_LEAP_MONTH, 1);
+                delete[] args;
+            } else {
+                pos.setIndex(parseStart);
+                cal.set(UCAL_IS_LEAP_MONTH, 0);
             }
-
-            text.extractBetween(0, start + count, temp);
-            src = &temp;
-        } else {
-            src = &text;
         }
 
-        parseInt(*src, number, pos, allowNegative,currentNumberFormat);
+        if (!parsedNumericLeapMonth) {
+            if (obeyCount) {
+                if ((start+count) > text.length()) {
+                    return -start;
+                }
+
+                text.extractBetween(0, start + count, temp);
+                src = &temp;
+            } else {
+                src = &text;
+            }
+
+            parseInt(*src, number, pos, allowNegative,currentNumberFormat);
+        }
 
         int32_t txtLoc = pos.getIndex();
 
         if (txtLoc > parseStart) {
             value = number.getLong();
             gotNumber = TRUE;
-            
+
             // suffix processing
             if (value < 0 ) {
                 txtLoc = checkIntSuffix(text, txtLoc, patLoc+1, TRUE);
@@ -2601,18 +3178,24 @@ int32_t SimpleDateFormat::subParse(const UnicodeString& text, int32_t& start, UC
             else {
                 txtLoc = checkIntSuffix(text, txtLoc, patLoc+1, FALSE);
             }
-            
+
             // Check the range of the value
-            int32_t bias = gFieldRangeBias[patternCharIndex];
-            
-            if (bias >= 0 && (value > cal.getMaximum(field) + bias || value < cal.getMinimum(field) + bias)) {
-                return -start;
+            if (!getBooleanAttribute(UDAT_PARSE_ALLOW_WHITESPACE, status)) {
+                int32_t bias = gFieldRangeBias[patternCharIndex];
+                if (bias >= 0 && (value > cal.getMaximum(field) + bias || value < cal.getMinimum(field) + bias)) {
+                    return -start;
+                }
+            } else {
+                int32_t bias = gFieldRangeBiasLenient[patternCharIndex];
+                if (bias >= 0 && (value > cal.getMaximum(field) + bias)) {
+                    return -start;
+                }
             }
-            
+
             pos.setIndex(txtLoc);
         }
     }
-    
+
     // Make sure that we got a number if
     // we want one, and didn't get one
     // if we don't want one.
@@ -2625,9 +3208,9 @@ int32_t SimpleDateFormat::subParse(const UnicodeString& text, int32_t& start, UC
             if (value < 0 || value > 24) {
                 return -start;
             }
-            
+
             // fall through to gotNumber check
-            
+            U_FALLTHROUGH;
         case UDAT_YEAR_FIELD:
         case UDAT_YEAR_WOY_FIELD:
         case UDAT_FRACTIONAL_SECOND_FIELD:
@@ -2635,29 +3218,9 @@ int32_t SimpleDateFormat::subParse(const UnicodeString& text, int32_t& start, UC
             if (! gotNumber) {
                 return -start;
             }
-            
-            break;
-            
-        case UDAT_DOW_LOCAL_FIELD:
-        case UDAT_STANDALONE_DAY_FIELD:
-        case UDAT_MONTH_FIELD:
-        case UDAT_STANDALONE_MONTH_FIELD:
-        case UDAT_QUARTER_FIELD:
-        case UDAT_STANDALONE_QUARTER_FIELD:
-            // in strict mode, these can only
-            // be a number if count <= 2
-            if (!lenient && gotNumber && count > 2) {
-                // We have a string pattern in strict mode
-                // but the input parsed as a number. Ignore
-                // the fact that the input parsed as a number
-                // and try to match it as a string. (Some
-                // locales have numbers for the month names.)
-                gotNumber = FALSE;
-                pos.setIndex(start);
-            }
-            
+
             break;
-            
+
         default:
             // we check the rest of the fields below.
             break;
@@ -2665,12 +3228,19 @@ int32_t SimpleDateFormat::subParse(const UnicodeString& text, int32_t& start, UC
 
     switch (patternCharIndex) {
     case UDAT_ERA_FIELD:
+        if (isChineseCalendar) {
+            if (!gotNumber) {
+                return -start;
+            }
+            cal.set(UCAL_ERA, value);
+            return pos.getIndex();
+        }
         if (count == 5) {
-            ps = matchString(text, start, UCAL_ERA, fSymbols->fNarrowEras, fSymbols->fNarrowErasCount, cal);
+            ps = matchString(text, start, UCAL_ERA, fSymbols->fNarrowEras, fSymbols->fNarrowErasCount, NULL, cal);
         } else if (count == 4) {
-            ps = matchString(text, start, UCAL_ERA, fSymbols->fEraNames, fSymbols->fEraNamesCount, cal);
+            ps = matchString(text, start, UCAL_ERA, fSymbols->fEraNames, fSymbols->fEraNamesCount, NULL, cal);
         } else {
-            ps = matchString(text, start, UCAL_ERA, fSymbols->fEras, fSymbols->fErasCount, cal);
+            ps = matchString(text, start, UCAL_ERA, fSymbols->fEras, fSymbols->fErasCount, NULL, cal);
         }
 
         // check return position, if it equals -start, then matchString error
@@ -2688,23 +3258,28 @@ int32_t SimpleDateFormat::subParse(const UnicodeString& text, int32_t& start, UC
         // we made adjustments to place the 2-digit year in the proper
         // century, for parsed strings from "00" to "99".  Any other string
         // is treated literally:  "2250", "-1", "1", "002".
-        if ((pos.getIndex() - start) == 2
-            && u_isdigit(text.charAt(start))
-            && u_isdigit(text.charAt(start+1)))
+        if (fDateOverride.compare(hebr)==0 && value < 1000) {
+            value += HEBREW_CAL_CUR_MILLENIUM_START_YEAR;
+        } else if (text.moveIndex32(start, 2) == pos.getIndex() && !isChineseCalendar
+            && u_isdigit(text.char32At(start))
+            && u_isdigit(text.char32At(text.moveIndex32(start, 1))))
         {
-            // Assume for example that the defaultCenturyStart is 6/18/1903.
-            // This means that two-digit years will be forced into the range
-            // 6/18/1903 to 6/17/2003.  As a result, years 00, 01, and 02
-            // correspond to 2000, 2001, and 2002.  Years 04, 05, etc. correspond
-            // to 1904, 1905, etc.  If the year is 03, then it is 2003 if the
-            // other fields specify a date before 6/18, or 1903 if they specify a
-            // date afterwards.  As a result, 03 is an ambiguous year.  All other
-            // two-digit years are unambiguous.
-          if(fHaveDefaultCentury) { // check if this formatter even has a pivot year
-              int32_t ambiguousTwoDigitYear = fDefaultCenturyStartYear % 100;
-              ambiguousYear[0] = (value == ambiguousTwoDigitYear);
-              value += (fDefaultCenturyStartYear/100)*100 +
-                (value < ambiguousTwoDigitYear ? 100 : 0);
+            // only adjust year for patterns less than 3.
+            if(count < 3) {
+                // Assume for example that the defaultCenturyStart is 6/18/1903.
+                // This means that two-digit years will be forced into the range
+                // 6/18/1903 to 6/17/2003.  As a result, years 00, 01, and 02
+                // correspond to 2000, 2001, and 2002.  Years 04, 05, etc. correspond
+                // to 1904, 1905, etc.  If the year is 03, then it is 2003 if the
+                // other fields specify a date before 6/18, or 1903 if they specify a
+                // date afterwards.  As a result, 03 is an ambiguous year.  All other
+                // two-digit years are unambiguous.
+                if(fHaveDefaultCentury) { // check if this formatter even has a pivot year
+                    int32_t ambiguousTwoDigitYear = fDefaultCenturyStartYear % 100;
+                    ambiguousYear[0] = (value == ambiguousTwoDigitYear);
+                    value += (fDefaultCenturyStartYear/100)*100 +
+                            (value < ambiguousTwoDigitYear ? 100 : 0);
+                }
             }
         }
         cal.set(UCAL_YEAR, value);
@@ -2723,9 +3298,11 @@ int32_t SimpleDateFormat::subParse(const UnicodeString& text, int32_t& start, UC
 
     case UDAT_YEAR_WOY_FIELD:
         // Comment is the same as for UDAT_Year_FIELDs - look above
-        if ((pos.getIndex() - start) == 2
-            && u_isdigit(text.charAt(start))
-            && u_isdigit(text.charAt(start+1))
+        if (fDateOverride.compare(hebr)==0 && value < 1000) {
+            value += HEBREW_CAL_CUR_MILLENIUM_START_YEAR;
+        } else if (text.moveIndex32(start, 2) == pos.getIndex()
+            && u_isdigit(text.char32At(start))
+            && u_isdigit(text.char32At(text.moveIndex32(start, 1)))
             && fHaveDefaultCentury )
         {
             int32_t ambiguousTwoDigitYear = fDefaultCenturyStartYear % 100;
@@ -2736,7 +3313,21 @@ int32_t SimpleDateFormat::subParse(const UnicodeString& text, int32_t& start, UC
         cal.set(UCAL_YEAR_WOY, value);
         return pos.getIndex();
 
+    case UDAT_YEAR_NAME_FIELD:
+        if (fSymbols->fShortYearNames != NULL) {
+            int32_t newStart = matchString(text, start, UCAL_YEAR, fSymbols->fShortYearNames, fSymbols->fShortYearNamesCount, NULL, cal);
+            if (newStart > 0) {
+                return newStart;
+            }
+        }
+        if (gotNumber && (getBooleanAttribute(UDAT_PARSE_ALLOW_NUMERIC,status) || value > fSymbols->fShortYearNamesCount)) {
+            cal.set(UCAL_YEAR, value);
+            return pos.getIndex();
+        }
+        return -start;
+
     case UDAT_MONTH_FIELD:
+    case UDAT_STANDALONE_MONTH_FIELD:
         if (gotNumber) // i.e., M or MM.
         {
             // When parsing month numbers from the Hebrew Calendar, we might need to adjust the month depending on whether
@@ -2745,8 +3336,8 @@ int32_t SimpleDateFormat::subParse(const UnicodeString& text, int32_t& start, UC
             if (!strcmp(cal.getType(),"hebrew")) {
                 HebrewCalendar *hc = (HebrewCalendar*)&cal;
                 if (cal.isSet(UCAL_YEAR)) {
-                   UErrorCode status = U_ZERO_ERROR;
-                   if (!hc->isLeapYear(hc->get(UCAL_YEAR,status)) && value >= 6) {
+                   UErrorCode monthStatus = U_ZERO_ERROR;
+                   if (!hc->isLeapYear(hc->get(UCAL_YEAR, monthStatus)) && value >= 6) {
                        cal.set(UCAL_MONTH, value);
                    } else {
                        cal.set(UCAL_MONTH, value - 1);
@@ -2756,61 +3347,68 @@ int32_t SimpleDateFormat::subParse(const UnicodeString& text, int32_t& start, UC
                 }
             } else {
                 // Don't want to parse the month if it is a string
-                // while pattern uses numeric style: M or MM.
+                // while pattern uses numeric style: M/MM, L/LL
                 // [We computed 'value' above.]
                 cal.set(UCAL_MONTH, value - 1);
             }
             return pos.getIndex();
         } else {
-            // count >= 3 // i.e., MMM or MMMM
-            // Want to be able to parse both short and long forms.
-            // Try count == 4 first:
-            int32_t newStart = 0;
-
-            if ((newStart = matchString(text, start, UCAL_MONTH,
-                                      fSymbols->fMonths, fSymbols->fMonthsCount, cal)) > 0)
-                return newStart;
-            else // count == 4 failed, now try count == 3
-                return matchString(text, start, UCAL_MONTH,
-                                   fSymbols->fShortMonths, fSymbols->fShortMonthsCount, cal);
-        }
-
-    case UDAT_STANDALONE_MONTH_FIELD:
-        if (gotNumber) // i.e., L or LL.
-        {
-            // Don't want to parse the month if it is a string
-            // while pattern uses numeric style: M or MM.
-            // [We computed 'value' above.]
-            cal.set(UCAL_MONTH, value - 1);
-            return pos.getIndex();
-        } else {
-            // count >= 3 // i.e., LLL or LLLL
+            // count >= 3 // i.e., MMM/MMMM, LLL/LLLL
             // Want to be able to parse both short and long forms.
             // Try count == 4 first:
+            UnicodeString * wideMonthPat = NULL;
+            UnicodeString * shortMonthPat = NULL;
+            if (fSymbols->fLeapMonthPatterns != NULL && fSymbols->fLeapMonthPatternsCount >= DateFormatSymbols::kMonthPatternsCount) {
+                if (patternCharIndex==UDAT_MONTH_FIELD) {
+                    wideMonthPat = &fSymbols->fLeapMonthPatterns[DateFormatSymbols::kLeapMonthPatternFormatWide];
+                    shortMonthPat = &fSymbols->fLeapMonthPatterns[DateFormatSymbols::kLeapMonthPatternFormatAbbrev];
+                } else {
+                    wideMonthPat = &fSymbols->fLeapMonthPatterns[DateFormatSymbols::kLeapMonthPatternStandaloneWide];
+                    shortMonthPat = &fSymbols->fLeapMonthPatterns[DateFormatSymbols::kLeapMonthPatternStandaloneAbbrev];
+                }
+            }
             int32_t newStart = 0;
-
-            if ((newStart = matchString(text, start, UCAL_MONTH,
-                                      fSymbols->fStandaloneMonths, fSymbols->fStandaloneMonthsCount, cal)) > 0)
+            if (patternCharIndex==UDAT_MONTH_FIELD) {
+                if(getBooleanAttribute(UDAT_PARSE_MULTIPLE_PATTERNS_FOR_MATCH, status) || count == 4) {
+                    newStart = matchString(text, start, UCAL_MONTH, fSymbols->fMonths, fSymbols->fMonthsCount, wideMonthPat, cal); // try MMMM
+                    if (newStart > 0) {
+                        return newStart;
+                    }
+                }
+                if(getBooleanAttribute(UDAT_PARSE_MULTIPLE_PATTERNS_FOR_MATCH, status) || count == 3) {
+                    newStart = matchString(text, start, UCAL_MONTH, fSymbols->fShortMonths, fSymbols->fShortMonthsCount, shortMonthPat, cal); // try MMM
+                }
+            } else {
+                if(getBooleanAttribute(UDAT_PARSE_MULTIPLE_PATTERNS_FOR_MATCH, status) || count == 4) {
+                    newStart = matchString(text, start, UCAL_MONTH, fSymbols->fStandaloneMonths, fSymbols->fStandaloneMonthsCount, wideMonthPat, cal); // try LLLL
+                    if (newStart > 0) {
+                        return newStart;
+                    }
+                }
+                if(getBooleanAttribute(UDAT_PARSE_MULTIPLE_PATTERNS_FOR_MATCH, status) || count == 3) {
+                    newStart = matchString(text, start, UCAL_MONTH, fSymbols->fStandaloneShortMonths, fSymbols->fStandaloneShortMonthsCount, shortMonthPat, cal); // try LLL
+                }
+            }
+            if (newStart > 0 || !getBooleanAttribute(UDAT_PARSE_ALLOW_NUMERIC, status))  // currently we do not try to parse MMMMM/LLLLL: #8860
                 return newStart;
-            else // count == 4 failed, now try count == 3
-                return matchString(text, start, UCAL_MONTH,
-                                   fSymbols->fStandaloneShortMonths, fSymbols->fStandaloneShortMonthsCount, cal);
+            // else we allowing parsing as number, below
         }
+        break;
 
     case UDAT_HOUR_OF_DAY1_FIELD:
         // [We computed 'value' above.]
         if (value == cal.getMaximum(UCAL_HOUR_OF_DAY) + 1)
             value = 0;
-            
+
         // fall through to set field
-            
+        U_FALLTHROUGH;
     case UDAT_HOUR_OF_DAY0_FIELD:
         cal.set(UCAL_HOUR_OF_DAY, value);
         return pos.getIndex();
 
     case UDAT_FRACTIONAL_SECOND_FIELD:
         // Fractional seconds left-justify
-        i = pos.getIndex() - start;
+        i = countDigits(text, start, pos.getIndex());
         if (i < 3) {
             while (i < 3) {
                 value *= 10;
@@ -2822,7 +3420,7 @@ int32_t SimpleDateFormat::subParse(const UnicodeString& text, int32_t& start, UC
                 a *= 10;
                 i--;
             }
-            value = (value + (a>>1)) / a;
+            value /= a;
         }
         cal.set(UCAL_MILLISECOND, value);
         return pos.getIndex();
@@ -2836,23 +3434,40 @@ int32_t SimpleDateFormat::subParse(const UnicodeString& text, int32_t& start, UC
         }
         // else for eee-eeeee fall through to handling of EEE-EEEEE
         // fall through, do not break here
+        U_FALLTHROUGH;
     case UDAT_DAY_OF_WEEK_FIELD:
         {
             // Want to be able to parse both short and long forms.
-            // Try count == 4 (EEEE) first:
+            // Try count == 4 (EEEE) wide first:
             int32_t newStart = 0;
-            if ((newStart = matchString(text, start, UCAL_DAY_OF_WEEK,
-                                      fSymbols->fWeekdays, fSymbols->fWeekdaysCount, cal)) > 0)
-                return newStart;
-            // EEEE failed, now try EEE
-            else if ((newStart = matchString(text, start, UCAL_DAY_OF_WEEK,
-                                   fSymbols->fShortWeekdays, fSymbols->fShortWeekdaysCount, cal)) > 0)
+            if(getBooleanAttribute(UDAT_PARSE_MULTIPLE_PATTERNS_FOR_MATCH, status) || count == 4) {
+                if ((newStart = matchString(text, start, UCAL_DAY_OF_WEEK,
+                                          fSymbols->fWeekdays, fSymbols->fWeekdaysCount, NULL, cal)) > 0)
+                    return newStart;
+            }
+            // EEEE wide failed, now try EEE abbreviated
+            if(getBooleanAttribute(UDAT_PARSE_MULTIPLE_PATTERNS_FOR_MATCH, status) || count == 3) {
+                if ((newStart = matchString(text, start, UCAL_DAY_OF_WEEK,
+                                       fSymbols->fShortWeekdays, fSymbols->fShortWeekdaysCount, NULL, cal)) > 0)
+                    return newStart;
+            }
+            // EEE abbreviated failed, now try EEEEEE short
+            if(getBooleanAttribute(UDAT_PARSE_MULTIPLE_PATTERNS_FOR_MATCH, status) || count == 6) {
+                if ((newStart = matchString(text, start, UCAL_DAY_OF_WEEK,
+                                       fSymbols->fShorterWeekdays, fSymbols->fShorterWeekdaysCount, NULL, cal)) > 0)
+                    return newStart;
+            }
+            // EEEEEE short failed, now try EEEEE narrow
+            if(getBooleanAttribute(UDAT_PARSE_MULTIPLE_PATTERNS_FOR_MATCH, status) || count == 5) {
+                if ((newStart = matchString(text, start, UCAL_DAY_OF_WEEK,
+                                       fSymbols->fNarrowWeekdays, fSymbols->fNarrowWeekdaysCount, NULL, cal)) > 0)
+                    return newStart;
+            }
+            if (!getBooleanAttribute(UDAT_PARSE_ALLOW_NUMERIC, status) || patternCharIndex == UDAT_DAY_OF_WEEK_FIELD)
                 return newStart;
-            // EEE failed, now try EEEEE
-            else
-                return matchString(text, start, UCAL_DAY_OF_WEEK,
-                                   fSymbols->fNarrowWeekdays, fSymbols->fNarrowWeekdaysCount, cal);
+            // else we allowing parsing as number, below
         }
+        break;
 
     case UDAT_STANDALONE_DAY_FIELD:
         {
@@ -2865,28 +3480,58 @@ int32_t SimpleDateFormat::subParse(const UnicodeString& text, int32_t& start, UC
             // Want to be able to parse both short and long forms.
             // Try count == 4 (cccc) first:
             int32_t newStart = 0;
-            if ((newStart = matchString(text, start, UCAL_DAY_OF_WEEK,
-                                      fSymbols->fStandaloneWeekdays, fSymbols->fStandaloneWeekdaysCount, cal)) > 0)
+            if(getBooleanAttribute(UDAT_PARSE_MULTIPLE_PATTERNS_FOR_MATCH, status) || count == 4) {
+                if ((newStart = matchString(text, start, UCAL_DAY_OF_WEEK,
+                                      fSymbols->fStandaloneWeekdays, fSymbols->fStandaloneWeekdaysCount, NULL, cal)) > 0)
+                    return newStart;
+            }
+            if(getBooleanAttribute(UDAT_PARSE_MULTIPLE_PATTERNS_FOR_MATCH, status) || count == 3) {
+                if ((newStart = matchString(text, start, UCAL_DAY_OF_WEEK,
+                                          fSymbols->fStandaloneShortWeekdays, fSymbols->fStandaloneShortWeekdaysCount, NULL, cal)) > 0)
+                    return newStart;
+            }
+            if(getBooleanAttribute(UDAT_PARSE_MULTIPLE_PATTERNS_FOR_MATCH, status) || count == 6) {
+                if ((newStart = matchString(text, start, UCAL_DAY_OF_WEEK,
+                                          fSymbols->fStandaloneShorterWeekdays, fSymbols->fStandaloneShorterWeekdaysCount, NULL, cal)) > 0)
+                    return newStart;
+            }
+            if (!getBooleanAttribute(UDAT_PARSE_ALLOW_NUMERIC, status))
                 return newStart;
-            else // cccc failed, now try ccc
-                return matchString(text, start, UCAL_DAY_OF_WEEK,
-                                   fSymbols->fStandaloneShortWeekdays, fSymbols->fStandaloneShortWeekdaysCount, cal);
+            // else we allowing parsing as number, below
         }
+        break;
 
     case UDAT_AM_PM_FIELD:
-        return matchString(text, start, UCAL_AM_PM, fSymbols->fAmPms, fSymbols->fAmPmsCount, cal);
+        {
+            // optionally try both wide/abbrev and narrow forms
+            int32_t newStart = 0;
+            // try wide/abbrev
+            if( getBooleanAttribute(UDAT_PARSE_MULTIPLE_PATTERNS_FOR_MATCH, status) || count < 5 ) {
+                if ((newStart = matchString(text, start, UCAL_AM_PM, fSymbols->fAmPms, fSymbols->fAmPmsCount, NULL, cal)) > 0) {
+                    return newStart;
+                }
+            }
+            // try narrow
+            if( getBooleanAttribute(UDAT_PARSE_MULTIPLE_PATTERNS_FOR_MATCH, status) || count >= 5 ) {
+                if ((newStart = matchString(text, start, UCAL_AM_PM, fSymbols->fNarrowAmPms, fSymbols->fNarrowAmPmsCount, NULL, cal)) > 0) {
+                    return newStart;
+                }
+            }
+            // no matches for given options
+            return -start;
+        }
 
     case UDAT_HOUR1_FIELD:
         // [We computed 'value' above.]
         if (value == cal.getLeastMaximum(UCAL_HOUR)+1)
             value = 0;
-            
+
         // fall through to set field
-            
+        U_FALLTHROUGH;
     case UDAT_HOUR0_FIELD:
         cal.set(UCAL_HOUR, value);
         return pos.getIndex();
-            
+
     case UDAT_QUARTER_FIELD:
         if (gotNumber) // i.e., Q or QQ.
         {
@@ -2901,13 +3546,23 @@ int32_t SimpleDateFormat::subParse(const UnicodeString& text, int32_t& start, UC
             // Try count == 4 first:
             int32_t newStart = 0;
 
-            if ((newStart = matchQuarterString(text, start, UCAL_MONTH,
+            if(getBooleanAttribute(UDAT_PARSE_MULTIPLE_PATTERNS_FOR_MATCH, status) || count == 4) {
+                if ((newStart = matchQuarterString(text, start, UCAL_MONTH,
                                       fSymbols->fQuarters, fSymbols->fQuartersCount, cal)) > 0)
+                    return newStart;
+            }
+            if(getBooleanAttribute(UDAT_PARSE_MULTIPLE_PATTERNS_FOR_MATCH, status) || count == 3) {
+                if ((newStart = matchQuarterString(text, start, UCAL_MONTH,
+                                          fSymbols->fShortQuarters, fSymbols->fShortQuartersCount, cal)) > 0)
+                    return newStart;
+            }
+            if (!getBooleanAttribute(UDAT_PARSE_ALLOW_NUMERIC, status))
                 return newStart;
-            else // count == 4 failed, now try count == 3
-                return matchQuarterString(text, start, UCAL_MONTH,
-                                   fSymbols->fShortQuarters, fSymbols->fShortQuartersCount, cal);
+            // else we allowing parsing as number, below
+            if(!getBooleanAttribute(UDAT_PARSE_MULTIPLE_PATTERNS_FOR_MATCH, status))
+                return -start;
         }
+        break;
 
     case UDAT_STANDALONE_QUARTER_FIELD:
         if (gotNumber) // i.e., q or qq.
@@ -2923,210 +3578,337 @@ int32_t SimpleDateFormat::subParse(const UnicodeString& text, int32_t& start, UC
             // Try count == 4 first:
             int32_t newStart = 0;
 
-            if ((newStart = matchQuarterString(text, start, UCAL_MONTH,
+            if(getBooleanAttribute(UDAT_PARSE_MULTIPLE_PATTERNS_FOR_MATCH, status) || count == 4) {
+                if ((newStart = matchQuarterString(text, start, UCAL_MONTH,
                                       fSymbols->fStandaloneQuarters, fSymbols->fStandaloneQuartersCount, cal)) > 0)
+                    return newStart;
+            }
+            if(getBooleanAttribute(UDAT_PARSE_MULTIPLE_PATTERNS_FOR_MATCH, status) || count == 3) {
+                if ((newStart = matchQuarterString(text, start, UCAL_MONTH,
+                                          fSymbols->fStandaloneShortQuarters, fSymbols->fStandaloneShortQuartersCount, cal)) > 0)
+                    return newStart;
+            }
+            if (!getBooleanAttribute(UDAT_PARSE_ALLOW_NUMERIC, status))
                 return newStart;
-            else // count == 4 failed, now try count == 3
-                return matchQuarterString(text, start, UCAL_MONTH,
-                                   fSymbols->fStandaloneShortQuarters, fSymbols->fStandaloneShortQuartersCount, cal);
+            // else we allowing parsing as number, below
+            if(!getBooleanAttribute(UDAT_PARSE_MULTIPLE_PATTERNS_FOR_MATCH, status))
+                return -start;
         }
+        break;
 
-    case UDAT_TIMEZONE_FIELD:
-    case UDAT_TIMEZONE_RFC_FIELD:
-    case UDAT_TIMEZONE_GENERIC_FIELD:
-    case UDAT_TIMEZONE_SPECIAL_FIELD:
+    case UDAT_TIMEZONE_FIELD: // 'z'
         {
-            int32_t offset = 0;
-            UBool parsed = FALSE;
-
-            // Step 1
-            // Check if this is a long GMT offset string (either localized or default)
-            offset = parseGMT(text, pos);
-            if (pos.getIndex() - start > 0) {
-                parsed = TRUE;
-            }
-            if (!parsed) {
-                // Step 2
-                // Check if this is an RFC822 time zone offset.
-                // ICU supports the standard RFC822 format [+|-]HHmm
-                // and its extended form [+|-]HHmmSS.
-                do {
-                    int32_t sign = 0;
-                    UChar signChar = text.charAt(start);
-                    if (signChar == (UChar)0x002B /* '+' */) {
-                        sign = 1;
-                    } else if (signChar == (UChar)0x002D /* '-' */) {
-                        sign = -1;
-                    } else {
-                        // Not an RFC822 offset string
-                        break;
-                    }
-
-                    // Parse digits
-                    int32_t orgPos = start + 1;
-                    pos.setIndex(orgPos);
-                    parseInt(text, number, 6, pos, FALSE,currentNumberFormat);
-                    int32_t numLen = pos.getIndex() - orgPos;
-                    if (numLen <= 0) {
-                        break;
-                    }
-
-                    // Followings are possible format (excluding sign char)
-                    // HHmmSS
-                    // HmmSS
-                    // HHmm
-                    // Hmm
-                    // HH
-                    // H
-                    int32_t val = number.getLong();
-                    int32_t hour = 0, min = 0, sec = 0;
-                    switch(numLen) {
-                    case 1: // H
-                    case 2: // HH
-                        hour = val;
-                        break;
-                    case 3: // Hmm
-                    case 4: // HHmm
-                        hour = val / 100;
-                        min = val % 100;
-                        break;
-                    case 5: // Hmmss
-                    case 6: // HHmmss
-                        hour = val / 10000;
-                        min = (val % 10000) / 100;
-                        sec = val % 100;
-                        break;
-                    }
-                    if (hour > 23 || min > 59 || sec > 59) {
-                        // Invalid value range
-                        break;
-                    }
-                    offset = (((hour * 60) + min) * 60 + sec) * 1000 * sign;
-                    parsed = TRUE;
-                } while (FALSE);
-
-                if (!parsed) {
-                    // Failed to parse.  Reset the position.
-                    pos.setIndex(start);
+            UTimeZoneFormatStyle style = (count < 4) ? UTZFMT_STYLE_SPECIFIC_SHORT : UTZFMT_STYLE_SPECIFIC_LONG;
+            const TimeZoneFormat *tzfmt = tzFormat(status);
+            if (U_SUCCESS(status)) {
+                TimeZone *tz = tzfmt->parse(style, text, pos, tzParseOptions, tzTimeType);
+                if (tz != NULL) {
+                    cal.adoptTimeZone(tz);
+                    return pos.getIndex();
+                }
+            }
+            return -start;
+    }
+        break;
+    case UDAT_TIMEZONE_RFC_FIELD: // 'Z'
+        {
+            UTimeZoneFormatStyle style = (count < 4) ?
+                UTZFMT_STYLE_ISO_BASIC_LOCAL_FULL : ((count == 5) ? UTZFMT_STYLE_ISO_EXTENDED_FULL: UTZFMT_STYLE_LOCALIZED_GMT);
+            const TimeZoneFormat *tzfmt = tzFormat(status);
+            if (U_SUCCESS(status)) {
+                TimeZone *tz = tzfmt->parse(style, text, pos, tzTimeType);
+                if (tz != NULL) {
+                    cal.adoptTimeZone(tz);
+                    return pos.getIndex();
+                }
+            }
+            return -start;
+        }
+    case UDAT_TIMEZONE_GENERIC_FIELD: // 'v'
+        {
+            UTimeZoneFormatStyle style = (count < 4) ? UTZFMT_STYLE_GENERIC_SHORT : UTZFMT_STYLE_GENERIC_LONG;
+            const TimeZoneFormat *tzfmt = tzFormat(status);
+            if (U_SUCCESS(status)) {
+                TimeZone *tz = tzfmt->parse(style, text, pos, tzParseOptions, tzTimeType);
+                if (tz != NULL) {
+                    cal.adoptTimeZone(tz);
+                    return pos.getIndex();
+                }
+            }
+            return -start;
+        }
+    case UDAT_TIMEZONE_SPECIAL_FIELD: // 'V'
+        {
+            UTimeZoneFormatStyle style;
+            switch (count) {
+            case 1:
+                style = UTZFMT_STYLE_ZONE_ID_SHORT;
+                break;
+            case 2:
+                style = UTZFMT_STYLE_ZONE_ID;
+                break;
+            case 3:
+                style = UTZFMT_STYLE_EXEMPLAR_LOCATION;
+                break;
+            default:
+                style = UTZFMT_STYLE_GENERIC_LOCATION;
+                break;
+            }
+            const TimeZoneFormat *tzfmt = tzFormat(status);
+            if (U_SUCCESS(status)) {
+                TimeZone *tz = tzfmt->parse(style, text, pos, tzTimeType);
+                if (tz != NULL) {
+                    cal.adoptTimeZone(tz);
+                    return pos.getIndex();
+                }
+            }
+            return -start;
+        }
+    case UDAT_TIMEZONE_LOCALIZED_GMT_OFFSET_FIELD: // 'O'
+        {
+            UTimeZoneFormatStyle style = (count < 4) ? UTZFMT_STYLE_LOCALIZED_GMT_SHORT : UTZFMT_STYLE_LOCALIZED_GMT;
+            const TimeZoneFormat *tzfmt = tzFormat(status);
+            if (U_SUCCESS(status)) {
+                TimeZone *tz = tzfmt->parse(style, text, pos, tzTimeType);
+                if (tz != NULL) {
+                    cal.adoptTimeZone(tz);
+                    return pos.getIndex();
+                }
+            }
+            return -start;
+        }
+    case UDAT_TIMEZONE_ISO_FIELD: // 'X'
+        {
+            UTimeZoneFormatStyle style;
+            switch (count) {
+            case 1:
+                style = UTZFMT_STYLE_ISO_BASIC_SHORT;
+                break;
+            case 2:
+                style = UTZFMT_STYLE_ISO_BASIC_FIXED;
+                break;
+            case 3:
+                style = UTZFMT_STYLE_ISO_EXTENDED_FIXED;
+                break;
+            case 4:
+                style = UTZFMT_STYLE_ISO_BASIC_FULL;
+                break;
+            default:
+                style = UTZFMT_STYLE_ISO_EXTENDED_FULL;
+                break;
+            }
+            const TimeZoneFormat *tzfmt = tzFormat(status);
+            if (U_SUCCESS(status)) {
+                TimeZone *tz = tzfmt->parse(style, text, pos, tzTimeType);
+                if (tz != NULL) {
+                    cal.adoptTimeZone(tz);
+                    return pos.getIndex();
+                }
+            }
+            return -start;
+        }
+    case UDAT_TIMEZONE_ISO_LOCAL_FIELD: // 'x'
+        {
+            UTimeZoneFormatStyle style;
+            switch (count) {
+            case 1:
+                style = UTZFMT_STYLE_ISO_BASIC_LOCAL_SHORT;
+                break;
+            case 2:
+                style = UTZFMT_STYLE_ISO_BASIC_LOCAL_FIXED;
+                break;
+            case 3:
+                style = UTZFMT_STYLE_ISO_EXTENDED_LOCAL_FIXED;
+                break;
+            case 4:
+                style = UTZFMT_STYLE_ISO_BASIC_LOCAL_FULL;
+                break;
+            default:
+                style = UTZFMT_STYLE_ISO_EXTENDED_LOCAL_FULL;
+                break;
+            }
+            const TimeZoneFormat *tzfmt = tzFormat(status);
+            if (U_SUCCESS(status)) {
+                TimeZone *tz = tzfmt->parse(style, text, pos, tzTimeType);
+                if (tz != NULL) {
+                    cal.adoptTimeZone(tz);
+                    return pos.getIndex();
                 }
             }
+            return -start;
+        }
+    // currently no pattern character is defined for UDAT_TIME_SEPARATOR_FIELD
+    // so we should not get here. Leave support in for future definition.
+    case UDAT_TIME_SEPARATOR_FIELD:
+        {
+            static const UChar def_sep = DateFormatSymbols::DEFAULT_TIME_SEPARATOR;
+            static const UChar alt_sep = DateFormatSymbols::ALTERNATE_TIME_SEPARATOR;
 
-            if (parsed) {
-                // offset was successfully parsed as either a long GMT string or RFC822 zone offset
-                // string.  Create normalized zone ID for the offset.
+            // Try matching a time separator.
+            int32_t count_sep = 1;
+            UnicodeString data[3];
+            fSymbols->getTimeSeparatorString(data[0]);
 
-                UnicodeString tzID(gGmt);
-                formatRFC822TZ(tzID, offset);
-                //TimeZone *customTZ = TimeZone::createTimeZone(tzID);
-                TimeZone *customTZ = new SimpleTimeZone(offset, tzID);    // faster than TimeZone::createTimeZone
-                cal.adoptTimeZone(customTZ);
+            // Add the default, if different from the locale.
+            if (data[0].compare(&def_sep, 1) != 0) {
+                data[count_sep++].setTo(def_sep);
+            }
 
-                return pos.getIndex();
+            // If lenient, add also the alternate, if different from the locale.
+            if (isLenient() && data[0].compare(&alt_sep, 1) != 0) {
+                data[count_sep++].setTo(alt_sep);
             }
 
-            // Step 3
-            // At this point, check for named time zones by looking through
-            // the locale data from the DateFormatZoneData strings.
-            // Want to be able to parse both short and long forms.
-            // optimize for calendar's current time zone
-            const ZoneStringFormat *zsf = fSymbols->getZoneStringFormat();
-            if (zsf) {
-                UErrorCode status = U_ZERO_ERROR;
-                const ZoneStringInfo *zsinfo = NULL;
-                int32_t matchLen;
+            return matchString(text, start, UCAL_FIELD_COUNT /* => nothing to set */, data, count_sep, NULL, cal);
+        }
 
-                switch (patternCharIndex) {
-                    case UDAT_TIMEZONE_FIELD: // 'z'
-                        if (count < 4) {
-                            zsinfo = zsf->findSpecificShort(text, start, matchLen, status);
-                        } else {
-                            zsinfo = zsf->findSpecificLong(text, start, matchLen, status);
-                        }
-                        break;
-                    case UDAT_TIMEZONE_GENERIC_FIELD: // 'v'
-                        if (count == 1) {
-                            zsinfo = zsf->findGenericShort(text, start, matchLen, status);
-                        } else if (count == 4) {
-                            zsinfo = zsf->findGenericLong(text, start, matchLen, status);
-                        }
-                        break;
-                    case UDAT_TIMEZONE_SPECIAL_FIELD: // 'V'
-                        if (count == 1) {
-                            zsinfo = zsf->findSpecificShort(text, start, matchLen, status);
-                        } else if (count == 4) {
-                            zsinfo = zsf->findGenericLocation(text, start, matchLen, status);
-                        }
-                        break;
-                    default:
-                        break;
-                }
+    case UDAT_AM_PM_MIDNIGHT_NOON_FIELD:
+    {
+        U_ASSERT(dayPeriod != NULL);
+        int32_t ampmStart = subParse(text, start, 0x61, count,
+                           obeyCount, allowNegative, ambiguousYear, saveHebrewMonth, cal,
+                           patLoc, numericLeapMonthFormatter, tzTimeType);
 
-                if (U_SUCCESS(status) && zsinfo != NULL) {
-                    if (zsinfo->isStandard()) {
-                        ((SimpleDateFormat*)this)->tztype = TZTYPE_STD;
-                    } else if (zsinfo->isDaylight()) {
-                        ((SimpleDateFormat*)this)->tztype = TZTYPE_DST;
-                    }
-                    UnicodeString tzid;
-                    zsinfo->getID(tzid);
-
-                    UnicodeString current;
-                    cal.getTimeZone().getID(current);
-                    if (tzid != current) {
-                        TimeZone *tz = TimeZone::createTimeZone(tzid);
-                        cal.adoptTimeZone(tz);
-                    }
-                    return start + matchLen;
+        if (ampmStart > 0) {
+            return ampmStart;
+        } else {
+            int32_t newStart = 0;
+
+            // Only match the first two strings from the day period strings array.
+            if (getBooleanAttribute(UDAT_PARSE_MULTIPLE_PATTERNS_FOR_MATCH, status) || count == 3) {
+                if ((newStart = matchDayPeriodStrings(text, start, fSymbols->fAbbreviatedDayPeriods,
+                                                        2, *dayPeriod)) > 0) {
+                    return newStart;
                 }
             }
-            // Step 4
-            // Final attempt - is this standalone GMT/UT/UTC?
-            int32_t gmtLen = 0;
-            if (text.compare(start, kGmtLen, gGmt) == 0) {
-                gmtLen = kGmtLen;
-            } else if (text.compare(start, kUtcLen, gUtc) == 0) {
-                gmtLen = kUtcLen;
-            } else if (text.compare(start, kUtLen, gUt) == 0) {
-                gmtLen = kUtLen;
+            if (getBooleanAttribute(UDAT_PARSE_MULTIPLE_PATTERNS_FOR_MATCH, status) || count == 5) {
+                if ((newStart = matchDayPeriodStrings(text, start, fSymbols->fNarrowDayPeriods,
+                                                        2, *dayPeriod)) > 0) {
+                    return newStart;
+                }
             }
-            if (gmtLen > 0) {
-                TimeZone *tz = TimeZone::createTimeZone(UnicodeString("Etc/GMT"));
-                cal.adoptTimeZone(tz);
-                return start + gmtLen;
+            // count == 4, but allow other counts
+            if (getBooleanAttribute(UDAT_PARSE_MULTIPLE_PATTERNS_FOR_MATCH, status)) {
+                if ((newStart = matchDayPeriodStrings(text, start, fSymbols->fWideDayPeriods,
+                                                        2, *dayPeriod)) > 0) {
+                    return newStart;
+                }
             }
 
-            // complete failure
             return -start;
         }
+    }
+
+    case UDAT_FLEXIBLE_DAY_PERIOD_FIELD:
+    {
+        U_ASSERT(dayPeriod != NULL);
+        int32_t newStart = 0;
+
+        if (getBooleanAttribute(UDAT_PARSE_MULTIPLE_PATTERNS_FOR_MATCH, status) || count == 3) {
+            if ((newStart = matchDayPeriodStrings(text, start, fSymbols->fAbbreviatedDayPeriods,
+                                fSymbols->fAbbreviatedDayPeriodsCount, *dayPeriod)) > 0) {
+                return newStart;
+            }
+        }
+        if (getBooleanAttribute(UDAT_PARSE_MULTIPLE_PATTERNS_FOR_MATCH, status) || count == 5) {
+            if ((newStart = matchDayPeriodStrings(text, start, fSymbols->fNarrowDayPeriods,
+                                fSymbols->fNarrowDayPeriodsCount, *dayPeriod)) > 0) {
+                return newStart;
+            }
+        }
+        if (getBooleanAttribute(UDAT_PARSE_MULTIPLE_PATTERNS_FOR_MATCH, status) || count == 4) {
+            if ((newStart = matchDayPeriodStrings(text, start, fSymbols->fWideDayPeriods,
+                                fSymbols->fWideDayPeriodsCount, *dayPeriod)) > 0) {
+                return newStart;
+            }
+        }
+
+        return -start;
+    }
 
     default:
         // Handle "generic" fields
-        int32_t parseStart = pos.getIndex();
-        const UnicodeString* src;
-        if (obeyCount) {
-            if ((start+count) > text.length()) {
+        // this is now handled below, outside the switch block
+        break;
+    }
+    // Handle "generic" fields:
+    // switch default case now handled here (outside switch block) to allow
+    // parsing of some string fields as digits for lenient case
+
+    int32_t parseStart = pos.getIndex();
+    const UnicodeString* src;
+    if (obeyCount) {
+        if ((start+count) > text.length()) {
+            return -start;
+        }
+        text.extractBetween(0, start + count, temp);
+        src = &temp;
+    } else {
+        src = &text;
+    }
+    parseInt(*src, number, pos, allowNegative,currentNumberFormat);
+    if (pos.getIndex() != parseStart) {
+        int32_t val = number.getLong();
+
+        // Don't need suffix processing here (as in number processing at the beginning of the function);
+        // the new fields being handled as numeric values (month, weekdays, quarters) should not have suffixes.
+
+        // Check the range of the value
+        if (!getBooleanAttribute(UDAT_PARSE_ALLOW_NUMERIC, status)) {
+            int32_t bias = gFieldRangeBias[patternCharIndex];
+            if (bias >= 0 && (val > cal.getMaximum(field) + bias || val < cal.getMinimum(field) + bias)) {
                 return -start;
             }
-            text.extractBetween(0, start + count, temp);
-            src = &temp;
         } else {
-            src = &text;
-        }
-        parseInt(*src, number, pos, allowNegative,currentNumberFormat);
-        if (pos.getIndex() != parseStart) {
-            int32_t value = number.getLong();
-            
-            // Check the range of the value
-            int32_t bias = gFieldRangeBias[patternCharIndex];
-            
-            if (bias < 0 || (value >= cal.getMinimum(field) + bias && value <= cal.getMaximum(field) + bias)) {
-                cal.set(field, value);
-                return pos.getIndex();
+            int32_t bias = gFieldRangeBiasLenient[patternCharIndex];
+            if (bias >= 0 && (value > cal.getMaximum(field) + bias)) {
+                return -start;
             }
         }
 
-        return -start;
+        // For the following, need to repeat some of the "if (gotNumber)" code above:
+        // UDAT_[STANDALONE_]MONTH_FIELD, UDAT_DOW_LOCAL_FIELD, UDAT_STANDALONE_DAY_FIELD,
+        // UDAT_[STANDALONE_]QUARTER_FIELD
+        switch (patternCharIndex) {
+        case UDAT_MONTH_FIELD:
+            // See notes under UDAT_MONTH_FIELD case above
+            if (!strcmp(cal.getType(),"hebrew")) {
+                HebrewCalendar *hc = (HebrewCalendar*)&cal;
+                if (cal.isSet(UCAL_YEAR)) {
+                   UErrorCode monthStatus = U_ZERO_ERROR;
+                   if (!hc->isLeapYear(hc->get(UCAL_YEAR, monthStatus)) && val >= 6) {
+                       cal.set(UCAL_MONTH, val);
+                   } else {
+                       cal.set(UCAL_MONTH, val - 1);
+                   }
+                } else {
+                    saveHebrewMonth = val;
+                }
+            } else {
+                cal.set(UCAL_MONTH, val - 1);
+            }
+            break;
+        case UDAT_STANDALONE_MONTH_FIELD:
+            cal.set(UCAL_MONTH, val - 1);
+            break;
+        case UDAT_DOW_LOCAL_FIELD:
+        case UDAT_STANDALONE_DAY_FIELD:
+            cal.set(UCAL_DOW_LOCAL, val);
+            break;
+        case UDAT_QUARTER_FIELD:
+        case UDAT_STANDALONE_QUARTER_FIELD:
+             cal.set(UCAL_MONTH, (val - 1) * 3);
+             break;
+        case UDAT_RELATED_YEAR_FIELD:
+            cal.setRelatedYear(val);
+            break;
+        default:
+            cal.set(field, val);
+            break;
+        }
+        return pos.getIndex();
     }
+    return -start;
 }
 
 /**
@@ -3137,7 +3919,7 @@ void SimpleDateFormat::parseInt(const UnicodeString& text,
                                 Formattable& number,
                                 ParsePosition& pos,
                                 UBool allowNegative,
-                                NumberFormat *fmt) const {
+                                const NumberFormat *fmt) const {
     parseInt(text, number, -1, pos, allowNegative,fmt);
 }
 
@@ -3149,18 +3931,21 @@ void SimpleDateFormat::parseInt(const UnicodeString& text,
                                 int32_t maxDigits,
                                 ParsePosition& pos,
                                 UBool allowNegative,
-                                NumberFormat *fmt) const {
+                                const NumberFormat *fmt) const {
     UnicodeString oldPrefix;
-    DecimalFormat* df = NULL;
-    if (!allowNegative && (df = dynamic_cast<DecimalFormat*>(fmt)) != NULL) {
-        df->getNegativePrefix(oldPrefix);
-        df->setNegativePrefix(SUPPRESS_NEGATIVE_PREFIX);
+    auto* fmtAsDF = dynamic_cast<const DecimalFormat*>(fmt);
+    LocalPointer<DecimalFormat> df;
+    if (!allowNegative && fmtAsDF != nullptr) {
+        df.adoptInstead(dynamic_cast<DecimalFormat*>(fmtAsDF->clone()));
+        if (df.isNull()) {
+            // Memory allocation error
+            return;
+        }
+        df->setNegativePrefix(UnicodeString(TRUE, SUPPRESS_NEGATIVE_PREFIX, -1));
+        fmt = df.getAlias();
     }
     int32_t oldPos = pos.getIndex();
     fmt->parse(text, number, pos);
-    if (df != NULL) {
-        df->setNegativePrefix(oldPrefix);
-    }
 
     if (maxDigits > 0) {
         // adjust the result to fit into
@@ -3179,6 +3964,19 @@ void SimpleDateFormat::parseInt(const UnicodeString& text,
     }
 }
 
+int32_t SimpleDateFormat::countDigits(const UnicodeString& text, int32_t start, int32_t end) const {
+    int32_t numDigits = 0;
+    int32_t idx = start;
+    while (idx < end) {
+        UChar32 cp = text.char32At(idx);
+        if (u_isdigit(cp)) {
+            numDigits++;
+        }
+        idx += U16_LENGTH(cp);
+    }
+    return numDigits;
+}
+
 //----------------------------------------------------------------------
 
 void SimpleDateFormat::translatePattern(const UnicodeString& originalPattern,
@@ -3187,42 +3985,42 @@ void SimpleDateFormat::translatePattern(const UnicodeString& originalPattern,
                                         const UnicodeString& to,
                                         UErrorCode& status)
 {
-  // run through the pattern and convert any pattern symbols from the version
-  // in "from" to the corresponding character ion "to".  This code takes
-  // quoted strings into account (it doesn't try to translate them), and it signals
-  // an error if a particular "pattern character" doesn't appear in "from".
-  // Depending on the values of "from" and "to" this can convert from generic
-  // to localized patterns or localized to generic.
-  if (U_FAILURE(status))
-    return;
-
-  translatedPattern.remove();
-  UBool inQuote = FALSE;
-  for (int32_t i = 0; i < originalPattern.length(); ++i) {
-    UChar c = originalPattern[i];
-    if (inQuote) {
-      if (c == QUOTE)
-    inQuote = FALSE;
-    }
-    else {
-      if (c == QUOTE)
-    inQuote = TRUE;
-      else if ((c >= 0x0061 /*'a'*/ && c <= 0x007A) /*'z'*/
-           || (c >= 0x0041 /*'A'*/ && c <= 0x005A /*'Z'*/)) {
-    int32_t ci = from.indexOf(c);
-    if (ci == -1) {
-      status = U_INVALID_FORMAT_ERROR;
-      return;
+    // run through the pattern and convert any pattern symbols from the version
+    // in "from" to the corresponding character in "to".  This code takes
+    // quoted strings into account (it doesn't try to translate them), and it signals
+    // an error if a particular "pattern character" doesn't appear in "from".
+    // Depending on the values of "from" and "to" this can convert from generic
+    // to localized patterns or localized to generic.
+    if (U_FAILURE(status)) {
+        return;
     }
-    c = to[ci];
-      }
+
+    translatedPattern.remove();
+    UBool inQuote = FALSE;
+    for (int32_t i = 0; i < originalPattern.length(); ++i) {
+        UChar c = originalPattern[i];
+        if (inQuote) {
+            if (c == QUOTE) {
+                inQuote = FALSE;
+            }
+        } else {
+            if (c == QUOTE) {
+                inQuote = TRUE;
+            } else if (isSyntaxChar(c)) {
+                int32_t ci = from.indexOf(c);
+                if (ci == -1) {
+                    status = U_INVALID_FORMAT_ERROR;
+                    return;
+                }
+                c = to[ci];
+            }
+        }
+        translatedPattern += c;
+    }
+    if (inQuote) {
+        status = U_INVALID_FORMAT_ERROR;
+        return;
     }
-    translatedPattern += c;
-  }
-  if (inQuote) {
-    status = U_INVALID_FORMAT_ERROR;
-    return;
-  }
 }
 
 //----------------------------------------------------------------------
@@ -3240,7 +4038,9 @@ UnicodeString&
 SimpleDateFormat::toLocalizedPattern(UnicodeString& result,
                                      UErrorCode& status) const
 {
-    translatePattern(fPattern, result, DateFormatSymbols::getPatternUChars(), fSymbols->fLocalPatternChars, status);
+    translatePattern(fPattern, result,
+                     UnicodeString(DateFormatSymbols::getPatternUChars()),
+                     fSymbols->fLocalPatternChars, status);
     return result;
 }
 
@@ -3250,6 +4050,43 @@ void
 SimpleDateFormat::applyPattern(const UnicodeString& pattern)
 {
     fPattern = pattern;
+    parsePattern();
+
+    // Hack to update use of Gannen year numbering for ja@calendar=japanese -
+    // use only if format is non-numeric (includes 年) and no other fDateOverride.
+    if (fCalendar != nullptr && uprv_strcmp(fCalendar->getType(),"japanese") == 0 &&
+            uprv_strcmp(fLocale.getLanguage(),"ja") == 0) {
+        if (fDateOverride==UnicodeString(u"y=jpanyear") && !fHasHanYearChar) {
+            // Gannen numbering is set but new pattern should not use it, unset;
+            // use procedure from adoptNumberFormat to clear overrides
+            if (fSharedNumberFormatters) {
+                freeSharedNumberFormatters(fSharedNumberFormatters);
+                fSharedNumberFormatters = NULL;
+            }
+            fDateOverride.setToBogus(); // record status
+        } else if (fDateOverride.isBogus() && fHasHanYearChar) {
+            // No current override (=> no Gannen numbering) but new pattern needs it;
+            // use procedures from initNUmberFormatters / adoptNumberFormat
+            umtx_lock(LOCK());
+            if (fSharedNumberFormatters == NULL) {
+                fSharedNumberFormatters = allocSharedNumberFormatters();
+            }
+            umtx_unlock(LOCK());
+            if (fSharedNumberFormatters != NULL) {
+                Locale ovrLoc(fLocale.getLanguage(),fLocale.getCountry(),fLocale.getVariant(),"numbers=jpanyear");
+                UErrorCode status = U_ZERO_ERROR;
+                const SharedNumberFormat *snf = createSharedNumberFormat(ovrLoc, status);
+                if (U_SUCCESS(status)) {
+                    // Now that we have an appropriate number formatter, fill in the
+                    // appropriate slot in the number formatters table.
+                    UDateFormatField patternCharIndex = DateFormatSymbols::getPatternCharIndex(u'y');
+                    SharedObject::copyPtr(snf, fSharedNumberFormatters[patternCharIndex]);
+                    snf->deleteIfZeroRefCount();
+                    fDateOverride.setTo(u"y=jpanyear", -1); // record status
+                }
+            }
+        }
+    }
 }
 
 //----------------------------------------------------------------------
@@ -3258,7 +4095,9 @@ void
 SimpleDateFormat::applyLocalizedPattern(const UnicodeString& pattern,
                                         UErrorCode &status)
 {
-    translatePattern(pattern, fPattern, fSymbols->fLocalPatternChars, DateFormatSymbols::getPatternUChars(), status);
+    translatePattern(pattern, fPattern,
+                     fSymbols->fLocalPatternChars,
+                     UnicodeString(DateFormatSymbols::getPatternUChars()), status);
 }
 
 //----------------------------------------------------------------------
@@ -3286,6 +4125,33 @@ SimpleDateFormat::setDateFormatSymbols(const DateFormatSymbols& newFormatSymbols
     fSymbols = new DateFormatSymbols(newFormatSymbols);
 }
 
+//----------------------------------------------------------------------
+const TimeZoneFormat*
+SimpleDateFormat::getTimeZoneFormat(void) const {
+    // TimeZoneFormat initialization might fail when out of memory.
+    // If we always initialize TimeZoneFormat instance, we can return
+    // such status there. For now, this implementation lazily instantiates
+    // a TimeZoneFormat for performance optimization reasons, but cannot
+    // propagate such error (probably just out of memory case) to the caller.
+    UErrorCode status = U_ZERO_ERROR;
+    return (const TimeZoneFormat*)tzFormat(status);
+}
+
+//----------------------------------------------------------------------
+void
+SimpleDateFormat::adoptTimeZoneFormat(TimeZoneFormat* timeZoneFormatToAdopt)
+{
+    delete fTimeZoneFormat;
+    fTimeZoneFormat = timeZoneFormatToAdopt;
+}
+
+//----------------------------------------------------------------------
+void
+SimpleDateFormat::setTimeZoneFormat(const TimeZoneFormat& newTimeZoneFormat)
+{
+    delete fTimeZoneFormat;
+    fTimeZoneFormat = new TimeZoneFormat(newTimeZoneFormat);
+}
 
 //----------------------------------------------------------------------
 
@@ -3293,10 +4159,20 @@ SimpleDateFormat::setDateFormatSymbols(const DateFormatSymbols& newFormatSymbols
 void SimpleDateFormat::adoptCalendar(Calendar* calendarToAdopt)
 {
   UErrorCode status = U_ZERO_ERROR;
+  Locale calLocale(fLocale);
+  DateFormatSymbols *newSymbols = fSymbols;
+  if (!newSymbols || fCalendar->getType() != calendarToAdopt->getType()) {
+    calLocale.setKeywordValue("calendar", calendarToAdopt->getType(), status);
+    newSymbols = DateFormatSymbols::createForLocale(calLocale, status);
+    if (U_FAILURE(status)) {
+        return;
+    }
+  }
   DateFormat::adoptCalendar(calendarToAdopt);
-  delete fSymbols;
-  fSymbols=NULL;
-  initializeSymbols(fLocale, fCalendar, status);  // we need new symbols
+  if (fSymbols != newSymbols) {
+    delete fSymbols;
+    fSymbols = newSymbols;
+  }
   initializeDefaultCentury();  // we need a new century (possibly)
 }
 
@@ -3304,6 +4180,31 @@ void SimpleDateFormat::adoptCalendar(Calendar* calendarToAdopt)
 //----------------------------------------------------------------------
 
 
+// override the DateFormat implementation in order to
+// lazily initialize fCapitalizationBrkIter
+void
+SimpleDateFormat::setContext(UDisplayContext value, UErrorCode& status)
+{
+    DateFormat::setContext(value, status);
+#if !UCONFIG_NO_BREAK_ITERATION
+    if (U_SUCCESS(status)) {
+        if ( fCapitalizationBrkIter == NULL && (value==UDISPCTX_CAPITALIZATION_FOR_BEGINNING_OF_SENTENCE ||
+                value==UDISPCTX_CAPITALIZATION_FOR_UI_LIST_OR_MENU || value==UDISPCTX_CAPITALIZATION_FOR_STANDALONE) ) {
+            status = U_ZERO_ERROR;
+            fCapitalizationBrkIter = BreakIterator::createSentenceInstance(fLocale, status);
+            if (U_FAILURE(status)) {
+                delete fCapitalizationBrkIter;
+                fCapitalizationBrkIter = NULL;
+            }
+        }
+    }
+#endif
+}
+
+
+//----------------------------------------------------------------------
+
+
 UBool
 SimpleDateFormat::isFieldUnitIgnored(UCalendarDateFields field) const {
     return isFieldUnitIgnored(fPattern, field);
@@ -3323,9 +4224,9 @@ SimpleDateFormat::isFieldUnitIgnored(const UnicodeString& pattern,
     for (int32_t i = 0; i < pattern.length(); ++i) {
         ch = pattern[i];
         if (ch != prevCh && count > 0) {
-            level = fgPatternCharToLevel[prevCh - PATTERN_CHAR_BASE];
+            level = getLevelFromChar(prevCh);
             // the larger the level, the smaller the field unit.
-            if ( fieldLevel <= level ) {
+            if (fieldLevel <= level) {
                 return FALSE;
             }
             count = 0;
@@ -3337,18 +4238,17 @@ SimpleDateFormat::isFieldUnitIgnored(const UnicodeString& pattern,
                 inQuote = ! inQuote;
             }
         }
-        else if ( ! inQuote && ((ch >= 0x0061 /*'a'*/ && ch <= 0x007A /*'z'*/)
-                    || (ch >= 0x0041 /*'A'*/ && ch <= 0x005A /*'Z'*/))) {
+        else if (!inQuote && isSyntaxChar(ch)) {
             prevCh = ch;
             ++count;
         }
     }
-    if ( count > 0 ) {
+    if (count > 0) {
         // last item
-        level = fgPatternCharToLevel[prevCh - PATTERN_CHAR_BASE];
-            if ( fieldLevel <= level ) {
-                return FALSE;
-            }
+        level = getLevelFromChar(prevCh);
+        if (fieldLevel <= level) {
+            return FALSE;
+        }
     }
     return TRUE;
 }
@@ -3427,12 +4327,12 @@ SimpleDateFormat::compareSimpleAffix(const UnicodeString& affix,
     for (int32_t i=0; i<affix.length(); ) {
         UChar32 c = affix.char32At(i);
         int32_t len = U16_LENGTH(c);
-        if (uprv_isRuleWhiteSpace(c)) {
+        if (PatternProps::isWhiteSpace(c)) {
             // We may have a pattern like: \u200F \u0020
             //        and input text like: \u200F \u0020
-            // Note that U+200F and U+0020 are RuleWhiteSpace but only
+            // Note that U+200F and U+0020 are Pattern_White_Space but only
             // U+0020 is UWhiteSpace.  So we have to first do a direct
-            // match of the run of RULE whitespace in the pattern,
+            // match of the run of Pattern_White_Space in the pattern,
             // then match any extra characters.
             UBool literalMatch = FALSE;
             while (pos < input.length() &&
@@ -3445,13 +4345,13 @@ SimpleDateFormat::compareSimpleAffix(const UnicodeString& affix,
                 }
                 c = affix.char32At(i);
                 len = U16_LENGTH(c);
-                if (!uprv_isRuleWhiteSpace(c)) {
+                if (!PatternProps::isWhiteSpace(c)) {
                     break;
                 }
             }
 
             // Advance over run in pattern
-            i = skipRuleWhiteSpace(affix, i);
+            i = skipPatternWhiteSpace(affix, i);
 
             // Advance over run in input text
             // Must see at least one white space char in input,
@@ -3482,15 +4382,9 @@ SimpleDateFormat::compareSimpleAffix(const UnicodeString& affix,
 //----------------------------------------------------------------------
 
 int32_t
-SimpleDateFormat::skipRuleWhiteSpace(const UnicodeString& text, int32_t pos) const {
-    while (pos < text.length()) {
-        UChar32 c = text.char32At(pos);
-        if (!uprv_isRuleWhiteSpace(c)) {
-            break;
-        }
-        pos += U16_LENGTH(c);
-    }
-    return pos;
+SimpleDateFormat::skipPatternWhiteSpace(const UnicodeString& text, int32_t pos) const {
+    const UChar* s = text.getBuffer();
+    return (int32_t)(PatternProps::skipWhiteSpace(s + pos, text.length() - pos) - s);
 }
 
 //----------------------------------------------------------------------
@@ -3507,6 +4401,54 @@ SimpleDateFormat::skipUWhiteSpace(const UnicodeString& text, int32_t pos) const
     return pos;
 }
 
+//----------------------------------------------------------------------
+
+// Lazy TimeZoneFormat instantiation, semantically const.
+TimeZoneFormat *
+SimpleDateFormat::tzFormat(UErrorCode &status) const {
+    if (fTimeZoneFormat == NULL) {
+        umtx_lock(LOCK());
+        {
+            if (fTimeZoneFormat == NULL) {
+                TimeZoneFormat *tzfmt = TimeZoneFormat::createInstance(fLocale, status);
+                if (U_FAILURE(status)) {
+                    return NULL;
+                }
+
+                const_cast<SimpleDateFormat *>(this)->fTimeZoneFormat = tzfmt;
+            }
+        }
+        umtx_unlock(LOCK());
+    }
+    return fTimeZoneFormat;
+}
+
+void SimpleDateFormat::parsePattern() {
+    fHasMinute = FALSE;
+    fHasSecond = FALSE;
+    fHasHanYearChar = FALSE;
+
+    int len = fPattern.length();
+    UBool inQuote = FALSE;
+    for (int32_t i = 0; i < len; ++i) {
+        UChar ch = fPattern[i];
+        if (ch == QUOTE) {
+            inQuote = !inQuote;
+        }
+        if (ch == 0x5E74) { // don't care whether this is inside quotes
+            fHasHanYearChar = TRUE;
+        }
+        if (!inQuote) {
+            if (ch == 0x6D) {  // 0x6D == 'm'
+                fHasMinute = TRUE;
+            }
+            if (ch == 0x73) {  // 0x73 == 's'
+                fHasSecond = TRUE;
+            }
+        }
+    }
+}
+
 U_NAMESPACE_END
 
 #endif /* #if !UCONFIG_NO_FORMATTING */