X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/cdf3f113388c74730337663f7f367f49ffebe12c..ccdc1577ef7fb32a5e30cb655337e7cd42b98987:/src/scan-gram.l
diff --git a/src/scan-gram.l b/src/scan-gram.l
index 5d4b4b30..084796c4 100644
--- a/src/scan-gram.l
+++ b/src/scan-gram.l
@@ -1,7 +1,6 @@
/* Bison Grammar Scanner -*- C -*-
- Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
- Free Software Foundation, Inc.
+ Copyright (C) 2002-2012 Free Software Foundation, Inc.
This file is part of Bison, the GNU Compiler Compiler.
@@ -18,7 +17,7 @@
You should have received a copy of the GNU General Public License
along with this program. If not, see . */
-%option debug nodefault nounput noyywrap never-interactive
+%option debug nodefault noinput nounput noyywrap never-interactive
%option prefix="gram_" outfile="lex.yy.c"
%{
@@ -37,6 +36,7 @@
#include
#include
+#include
#include
#include
@@ -44,8 +44,8 @@
#define YY_DECL GRAM_LEX_DECL
-#define YY_USER_INIT \
- code_start = scanner_cursor = loc->start; \
+#define YY_USER_INIT \
+ code_start = scanner_cursor = loc->start; \
/* Location of scanner cursor. */
static boundary scanner_cursor;
@@ -55,16 +55,33 @@ static boundary scanner_cursor;
static size_t no_cr_read (FILE *, char *, size_t);
#define YY_INPUT(buf, result, size) ((result) = no_cr_read (yyin, buf, size))
-#define RETURN_PERCENT_FLAG(Value) \
+#define RETURN_PERCENT_PARAM(Value) \
+ RETURN_VALUE(PERCENT_PARAM, param, param_ ## Value)
+
+#define RETURN_PERCENT_FLAG(Value) \
+ RETURN_VALUE(PERCENT_FLAG, uniqstr, uniqstr_new (Value))
+
+#define RETURN_VALUE(Token, Field, Value) \
do { \
- val->uniqstr = uniqstr_new (Value); \
- return PERCENT_FLAG; \
+ val->Field = Value; \
+ return Token; \
} while (0)
+#define ROLLBACK_CURRENT_TOKEN \
+ do { \
+ scanner_cursor.column -= mbsnwidth (yytext, yyleng, 0); \
+ yyless (0); \
+ } while (0)
/* A string representing the most recently saved token. */
static char *last_string;
+/* Bracketed identifier. */
+static uniqstr bracketed_id_str = 0;
+static location bracketed_id_loc;
+static boundary bracketed_id_start;
+static int bracketed_id_context_state = 0;
+
void
gram_scanner_last_string_free (void)
{
@@ -83,48 +100,51 @@ static void unexpected_newline (boundary, char const *);
/* Strings and characters in directives/rules. */
%x SC_ESCAPED_STRING SC_ESCAPED_CHARACTER
/* A identifier was just read in directives/rules. Special state
- to capture the sequence `identifier :'. */
+ to capture the sequence 'identifier :'. */
%x SC_AFTER_IDENTIFIER
/* A complex tag, with nested angles brackets. */
%x SC_TAG
- /* Three types of user code:
- - prologue (code between `%{' `%}' in the first section, before %%);
+ /* Four types of user code:
+ - prologue (code between '%{' '%}' in the first section, before %%);
- actions, printers, union, etc, (between braced in the middle section);
- - epilogue (everything after the second %%). */
-%x SC_PROLOGUE SC_BRACED_CODE SC_EPILOGUE
+ - epilogue (everything after the second %%).
+ - predicate (code between '%?{' and '{' in middle section); */
+%x SC_PROLOGUE SC_BRACED_CODE SC_EPILOGUE SC_PREDICATE
/* C and C++ comments in code. */
%x SC_COMMENT SC_LINE_COMMENT
/* Strings and characters in code. */
%x SC_STRING SC_CHARACTER
+ /* Bracketed identifiers support. */
+%x SC_BRACKETED_ID SC_RETURN_BRACKETED_ID
-letter [-.abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ_]
-id {letter}({letter}|[0-9])*
+letter [.abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ_]
+id {letter}({letter}|[-0-9])*
directive %{id}
-int [0-9]+
+int [0-9]+
/* POSIX says that a tag must be both an id and a C union member, but
historically almost any character is allowed in a tag. We disallow
NUL, as this simplifies our implementation. We disallow angle
bracket to match them in nested pairs: several languages use them
for generics/template types. */
-tag [^\0<>]+
+tag [^\0<>]+
/* Zero or more instances of backslash-newline. Following GCC, allow
white space between the backslash and the newline. */
-splice (\\[ \f\t\v]*\n)*
+splice (\\[ \f\t\v]*\n)*
%%
%{
/* Nesting level. Either for nested braces, or nested angle brackets
(but not mixed). */
- int nesting IF_LINT (= 0);
+ int nesting PACIFY_CC (= 0);
/* Parent context state, when applicable. */
- int context_state IF_LINT (= 0);
+ int context_state PACIFY_CC (= 0);
/* Location of most recent identifier, when applicable. */
- location id_loc IF_LINT (= empty_location);
+ location id_loc PACIFY_CC (= empty_location);
/* Where containing code started, when applicable. Its initial
value is relevant only when yylex is invoked in the SC_EPILOGUE
@@ -133,7 +153,7 @@ splice (\\[ \f\t\v]*\n)*
/* Where containing comment or string or character literal started,
when applicable. */
- boundary token_start IF_LINT (= scanner_cursor);
+ boundary token_start PACIFY_CC (= scanner_cursor);
%}
@@ -141,10 +161,12 @@ splice (\\[ \f\t\v]*\n)*
| Scanning white space. |
`-----------------------*/
-
+
{
/* Comments and white space. */
- "," warn_at (*loc, _("stray `,' treated as white space"));
+ "," {
+ complain_at (*loc, Wother, _("stray ',' treated as white space"));
+ }
[ \f\n\t\v] |
"//".* ;
"/*" {
@@ -166,7 +188,7 @@ splice (\\[ \f\t\v]*\n)*
`----------------------------*/
/* For directives that are also command line options, the regex must be
- "%..."
+ "%..."
after "[-_]"s are removed, and the directive must match the --long
option name, with a single string argument. Otherwise, add exceptions
to ../build-aux/cross-options.pl. */
@@ -181,7 +203,7 @@ splice (\\[ \f\t\v]*\n)*
"%defines" return PERCENT_DEFINES;
"%destructor" return PERCENT_DESTRUCTOR;
"%dprec" return PERCENT_DPREC;
- "%error"[-_]"verbose" RETURN_PERCENT_FLAG("error-verbose");
+ "%error"[-_]"verbose" return PERCENT_ERROR_VERBOSE;
"%expect" return PERCENT_EXPECT;
"%expect"[-_]"rr" return PERCENT_EXPECT_RR;
"%file-prefix" return PERCENT_FILE_PREFIX;
@@ -190,7 +212,7 @@ splice (\\[ \f\t\v]*\n)*
"%glr-parser" return PERCENT_GLR_PARSER;
"%language" return PERCENT_LANGUAGE;
"%left" return PERCENT_LEFT;
- "%lex-param" return PERCENT_LEX_PARAM;
+ "%lex-param" RETURN_PERCENT_PARAM(lex);
"%locations" RETURN_PERCENT_FLAG("locations");
"%merge" return PERCENT_MERGE;
"%name"[-_]"prefix" return PERCENT_NAME_PREFIX;
@@ -200,7 +222,8 @@ splice (\\[ \f\t\v]*\n)*
"%nondeterministic-parser" return PERCENT_NONDETERMINISTIC_PARSER;
"%nterm" return PERCENT_NTERM;
"%output" return PERCENT_OUTPUT;
- "%parse-param" return PERCENT_PARSE_PARAM;
+ "%param" RETURN_PERCENT_PARAM(both);
+ "%parse-param" RETURN_PERCENT_PARAM(parse);
"%prec" return PERCENT_PREC;
"%precedence" return PERCENT_PRECEDENCE;
"%printer" return PERCENT_PRINTER;
@@ -218,7 +241,7 @@ splice (\\[ \f\t\v]*\n)*
"%yacc" return PERCENT_YACC;
{directive} {
- complain_at (*loc, _("invalid directive: %s"), quote (yytext));
+ complain_at (*loc, complaint, _("invalid directive: %s"), quote (yytext));
}
"=" return EQUAL;
@@ -228,6 +251,7 @@ splice (\\[ \f\t\v]*\n)*
{id} {
val->uniqstr = uniqstr_new (yytext);
id_loc = *loc;
+ bracketed_id_str = NULL;
BEGIN SC_AFTER_IDENTIFIER;
}
@@ -240,11 +264,17 @@ splice (\\[ \f\t\v]*\n)*
return INT;
}
- /* Characters. We don't check there is only one. */
- "'" STRING_GROW; token_start = loc->start; BEGIN SC_ESCAPED_CHARACTER;
+ /* Identifiers may not start with a digit. Yet, don't silently
+ accept "1FOO" as "1 FOO". */
+ {int}{id} {
+ complain_at (*loc, complaint, _("invalid identifier: %s"), quote (yytext));
+ }
+
+ /* Characters. */
+ "'" token_start = loc->start; BEGIN SC_ESCAPED_CHARACTER;
/* Strings. */
- "\"" token_start = loc->start; BEGIN SC_ESCAPED_STRING;
+ "\"" token_start = loc->start; BEGIN SC_ESCAPED_STRING;
/* Prologue. */
"%{" code_start = loc->start; BEGIN SC_PROLOGUE;
@@ -257,6 +287,13 @@ splice (\\[ \f\t\v]*\n)*
BEGIN SC_BRACED_CODE;
}
+ /* Semantic predicate. */
+ "%?"[ \f\n\t\v]*"{" {
+ nesting = 0;
+ code_start = loc->start;
+ BEGIN SC_PREDICATE;
+ }
+
/* A type. */
"<*>" return TAG_ANY;
"<>" return TAG_NONE;
@@ -280,8 +317,15 @@ splice (\\[ \f\t\v]*\n)*
return PERCENT_PERCENT;
}
+ "[" {
+ bracketed_id_str = NULL;
+ bracketed_id_start = loc->start;
+ bracketed_id_context_state = YY_START;
+ BEGIN SC_BRACKETED_ID;
+ }
+
. {
- complain_at (*loc, _("invalid character: %s"), quote (yytext));
+ complain_at (*loc, complaint, _("invalid character: %s"), quote (yytext));
}
<> {
@@ -298,7 +342,7 @@ splice (\\[ \f\t\v]*\n)*
{
- \0 complain_at (*loc, _("invalid null character"));
+ \0 complain_at (*loc, complaint, _("invalid null character"));
}
@@ -308,58 +352,128 @@ splice (\\[ \f\t\v]*\n)*
{
+ "[" {
+ if (bracketed_id_str)
+ {
+ ROLLBACK_CURRENT_TOKEN;
+ BEGIN SC_RETURN_BRACKETED_ID;
+ *loc = id_loc;
+ return ID;
+ }
+ else
+ {
+ bracketed_id_start = loc->start;
+ bracketed_id_context_state = YY_START;
+ BEGIN SC_BRACKETED_ID;
+ }
+ }
":" {
+ BEGIN (bracketed_id_str ? SC_RETURN_BRACKETED_ID : INITIAL);
*loc = id_loc;
- BEGIN INITIAL;
return ID_COLON;
}
. {
- scanner_cursor.column -= mbsnwidth (yytext, yyleng, 0);
- yyless (0);
+ ROLLBACK_CURRENT_TOKEN;
+ BEGIN (bracketed_id_str ? SC_RETURN_BRACKETED_ID : INITIAL);
*loc = id_loc;
- BEGIN INITIAL;
return ID;
}
<> {
+ BEGIN (bracketed_id_str ? SC_RETURN_BRACKETED_ID : INITIAL);
*loc = id_loc;
- BEGIN INITIAL;
return ID;
}
}
+ /*--------------------------------.
+ | Scanning bracketed identifiers. |
+ `--------------------------------*/
+
+
+{
+ {id} {
+ if (bracketed_id_str)
+ {
+ complain_at (*loc, complaint,
+ _("unexpected identifier in bracketed name: %s"),
+ quote (yytext));
+ }
+ else
+ {
+ bracketed_id_str = uniqstr_new (yytext);
+ bracketed_id_loc = *loc;
+ }
+ }
+ "]" {
+ BEGIN bracketed_id_context_state;
+ if (bracketed_id_str)
+ {
+ if (INITIAL == bracketed_id_context_state)
+ {
+ val->uniqstr = bracketed_id_str;
+ bracketed_id_str = 0;
+ *loc = bracketed_id_loc;
+ return BRACKETED_ID;
+ }
+ }
+ else
+ complain_at (*loc, complaint, _("an identifier expected"));
+ }
+ . {
+ complain_at (*loc, complaint, _("invalid character in bracketed name: %s"),
+ quote (yytext));
+ }
+ <> {
+ BEGIN bracketed_id_context_state;
+ unexpected_eof (bracketed_id_start, "]");
+ }
+}
+
+
+{
+ . {
+ ROLLBACK_CURRENT_TOKEN;
+ val->uniqstr = bracketed_id_str;
+ bracketed_id_str = 0;
+ *loc = bracketed_id_loc;
+ BEGIN INITIAL;
+ return BRACKETED_ID;
+ }
+}
+
/*---------------------------------------------------------------.
- | Scanning a Yacc comment. The initial `/ *' is already eaten. |
+ | Scanning a Yacc comment. The initial '/ *' is already eaten. |
`---------------------------------------------------------------*/
{
"*/" BEGIN context_state;
- .|\n ;
+ .|\n ;
<> unexpected_eof (token_start, "*/"); BEGIN context_state;
}
/*------------------------------------------------------------.
- | Scanning a C comment. The initial `/ *' is already eaten. |
+ | Scanning a C comment. The initial '/ *' is already eaten. |
`------------------------------------------------------------*/
{
"*"{splice}"/" STRING_GROW; BEGIN context_state;
- <> unexpected_eof (token_start, "*/"); BEGIN context_state;
+ <> unexpected_eof (token_start, "*/"); BEGIN context_state;
}
/*--------------------------------------------------------------.
- | Scanning a line comment. The initial `//' is already eaten. |
+ | Scanning a line comment. The initial '//' is already eaten. |
`--------------------------------------------------------------*/
{
- "\n" STRING_GROW; BEGIN context_state;
- {splice} STRING_GROW;
- <> BEGIN context_state;
+ "\n" STRING_GROW; BEGIN context_state;
+ {splice} STRING_GROW;
+ <> BEGIN context_state;
}
@@ -391,30 +505,50 @@ splice (\\[ \f\t\v]*\n)*
/*----------------------------------------------------------.
| Scanning a Bison character literal, decoding its escapes. |
- | The initial quote is already eaten. |
+ | The initial quote is already eaten. |
`----------------------------------------------------------*/
{
"'"|"\n" {
- if (yytext[0] == '\n')
- unexpected_newline (token_start, "'");
- STRING_GROW;
STRING_FINISH;
loc->start = token_start;
- val->character = last_string[1];
+ val->character = last_string[0];
+ {
+ /* FIXME: Eventually, make these errors. */
+ if (last_string[0] == '\0')
+ {
+ complain_at (*loc, Wother, _("empty character literal"));
+ /* '\0' seems dangerous even if we are about to complain. */
+ val->character = '\'';
+ }
+ else if (last_string[1] != '\0')
+ complain_at (*loc, Wother,
+ _("extra characters in character literal"));
+ }
+ if (yytext[0] == '\n')
+ unexpected_newline (token_start, "'");
STRING_FREE;
BEGIN INITIAL;
return CHAR;
}
<> {
- unexpected_eof (token_start, "'");
STRING_FINISH;
loc->start = token_start;
- if (strlen (last_string) > 1)
- val->character = last_string[1];
- else
- val->character = last_string[0];
+ val->character = last_string[0];
+ {
+ /* FIXME: Eventually, make these errors. */
+ if (last_string[0] == '\0')
+ {
+ complain_at (*loc, Wother, _("empty character literal"));
+ /* '\0' seems dangerous even if we are about to complain. */
+ val->character = '\'';
+ }
+ else if (last_string[1] != '\0')
+ complain_at (*loc, Wother,
+ _("extra characters in character literal"));
+ }
+ unexpected_eof (token_start, "'");
STRING_FREE;
BEGIN INITIAL;
return CHAR;
@@ -464,10 +598,9 @@ splice (\\[ \f\t\v]*\n)*
{
\\[0-7]{1,3} {
unsigned long int c = strtoul (yytext + 1, NULL, 8);
- if (UCHAR_MAX < c)
- complain_at (*loc, _("invalid escape sequence: %s"), quote (yytext));
- else if (! c)
- complain_at (*loc, _("invalid null character: %s"), quote (yytext));
+ if (!c || UCHAR_MAX < c)
+ complain_at (*loc, complaint, _("invalid number after \\-escape: %s"),
+ yytext+1);
else
obstack_1grow (&obstack_for_string, c);
}
@@ -475,37 +608,41 @@ splice (\\[ \f\t\v]*\n)*
\\x[0-9abcdefABCDEF]+ {
verify (UCHAR_MAX < ULONG_MAX);
unsigned long int c = strtoul (yytext + 2, NULL, 16);
- if (UCHAR_MAX < c)
- complain_at (*loc, _("invalid escape sequence: %s"), quote (yytext));
- else if (! c)
- complain_at (*loc, _("invalid null character: %s"), quote (yytext));
+ if (!c || UCHAR_MAX < c)
+ complain_at (*loc, complaint, _("invalid number after \\-escape: %s"),
+ yytext+1);
else
obstack_1grow (&obstack_for_string, c);
}
- \\a obstack_1grow (&obstack_for_string, '\a');
- \\b obstack_1grow (&obstack_for_string, '\b');
- \\f obstack_1grow (&obstack_for_string, '\f');
- \\n obstack_1grow (&obstack_for_string, '\n');
- \\r obstack_1grow (&obstack_for_string, '\r');
- \\t obstack_1grow (&obstack_for_string, '\t');
- \\v obstack_1grow (&obstack_for_string, '\v');
+ \\a obstack_1grow (&obstack_for_string, '\a');
+ \\b obstack_1grow (&obstack_for_string, '\b');
+ \\f obstack_1grow (&obstack_for_string, '\f');
+ \\n obstack_1grow (&obstack_for_string, '\n');
+ \\r obstack_1grow (&obstack_for_string, '\r');
+ \\t obstack_1grow (&obstack_for_string, '\t');
+ \\v obstack_1grow (&obstack_for_string, '\v');
/* \\[\"\'?\\] would be shorter, but it confuses xgettext. */
\\("\""|"'"|"?"|"\\") obstack_1grow (&obstack_for_string, yytext[1]);
\\(u|U[0-9abcdefABCDEF]{4})[0-9abcdefABCDEF]{4} {
int c = convert_ucn_to_byte (yytext);
- if (c < 0)
- complain_at (*loc, _("invalid escape sequence: %s"), quote (yytext));
- else if (! c)
- complain_at (*loc, _("invalid null character: %s"), quote (yytext));
+ if (c <= 0)
+ complain_at (*loc, complaint, _("invalid number after \\-escape: %s"),
+ yytext+1);
else
obstack_1grow (&obstack_for_string, c);
}
- \\(.|\n) {
- complain_at (*loc, _("unrecognized escape sequence: %s"), quote (yytext));
- STRING_GROW;
+ \\(.|\n) {
+ char const *p = yytext + 1;
+ /* Quote only if escaping won't make the character visible. */
+ if (isspace ((unsigned char) *p) && isprint ((unsigned char) *p))
+ p = quote (p);
+ else
+ p = quotearg_style_mem (escape_quoting_style, p, 1);
+ complain_at (*loc, complaint, _("invalid character after \\-escape: %s"),
+ p);
}
}
@@ -515,21 +652,21 @@ splice (\\[ \f\t\v]*\n)*
{
- {splice}|\\{splice}[^\n\[\]] STRING_GROW;
+ {splice}|\\{splice}[^\n\[\]] STRING_GROW;
}
{
- "'" STRING_GROW; BEGIN context_state;
- \n unexpected_newline (token_start, "'"); BEGIN context_state;
- <> unexpected_eof (token_start, "'"); BEGIN context_state;
+ "'" STRING_GROW; BEGIN context_state;
+ \n unexpected_newline (token_start, "'"); BEGIN context_state;
+ <> unexpected_eof (token_start, "'"); BEGIN context_state;
}
{
- "\"" STRING_GROW; BEGIN context_state;
- \n unexpected_newline (token_start, "\""); BEGIN context_state;
- <> unexpected_eof (token_start, "\""); BEGIN context_state;
+ "\"" STRING_GROW; BEGIN context_state;
+ \n unexpected_newline (token_start, "\""); BEGIN context_state;
+ <> unexpected_eof (token_start, "\""); BEGIN context_state;
}
@@ -537,7 +674,7 @@ splice (\\[ \f\t\v]*\n)*
| Strings, comments etc. can be found in user code. |
`---------------------------------------------------*/
-
+
{
"'" {
STRING_GROW;
@@ -567,42 +704,63 @@ splice (\\[ \f\t\v]*\n)*
/*-----------------------------------------------------------.
- | Scanning some code in braces (actions). The initial "{" is |
- | already eaten. |
+ | Scanning some code in braces (actions, predicates). The |
+ | initial "{" is already eaten. |
`-----------------------------------------------------------*/
-
+
{
"{"|"<"{splice}"%" STRING_GROW; nesting++;
"%"{splice}">" STRING_GROW; nesting--;
- "}" {
- obstack_1grow (&obstack_for_string, '}');
-
- --nesting;
- if (nesting < 0)
- {
- STRING_FINISH;
- loc->start = code_start;
- val->code = last_string;
- BEGIN INITIAL;
- return BRACED_CODE;
- }
- }
- /* Tokenize `<<%' correctly (as `<<' `%') rather than incorrrectly
- (as `<' `<%'). */
+ /* Tokenize '<<%' correctly (as '<<' '%') rather than incorrrectly
+ (as '<' '<%'). */
"<"{splice}"<" STRING_GROW;
<> {
+ int token = (YY_START == SC_BRACED_CODE) ? BRACED_CODE : BRACED_PREDICATE;
unexpected_eof (code_start, "}");
STRING_FINISH;
loc->start = code_start;
val->code = last_string;
BEGIN INITIAL;
- return BRACED_CODE;
+ return token;
+ }
+}
+
+
+{
+ "}" {
+ obstack_1grow (&obstack_for_string, '}');
+
+ --nesting;
+ if (nesting < 0)
+ {
+ STRING_FINISH;
+ loc->start = code_start;
+ val->code = last_string;
+ BEGIN INITIAL;
+ return BRACED_CODE;
+ }
}
}
+
+{
+ "}" {
+ --nesting;
+ if (nesting < 0)
+ {
+ STRING_FINISH;
+ loc->start = code_start;
+ val->code = last_string;
+ BEGIN INITIAL;
+ return BRACED_PREDICATE;
+ }
+ else
+ obstack_1grow (&obstack_for_string, '}');
+ }
+}
/*--------------------------------------------------------------.
| Scanning some prologue: from "%{" (already scanned) to "%}". |
@@ -650,8 +808,8 @@ splice (\\[ \f\t\v]*\n)*
| By default, grow the string obstack with the input. |
`-----------------------------------------------------*/
-. |
-\n STRING_GROW;
+. |
+ \n STRING_GROW;
%%
@@ -667,35 +825,35 @@ no_cr_read (FILE *fp, char *buf, size_t size)
{
char *w = memchr (buf, '\r', bytes_read);
if (w)
- {
- char const *r = ++w;
- char const *lim = buf + bytes_read;
-
- for (;;)
- {
- /* Found an '\r'. Treat it like '\n', but ignore any
- '\n' that immediately follows. */
- w[-1] = '\n';
- if (r == lim)
- {
- int ch = getc (fp);
- if (ch != '\n' && ungetc (ch, fp) != ch)
- break;
- }
- else if (*r == '\n')
- r++;
-
- /* Copy until the next '\r'. */
- do
- {
- if (r == lim)
- return w - buf;
- }
- while ((*w++ = *r++) != '\r');
- }
-
- return w - buf;
- }
+ {
+ char const *r = ++w;
+ char const *lim = buf + bytes_read;
+
+ for (;;)
+ {
+ /* Found an '\r'. Treat it like '\n', but ignore any
+ '\n' that immediately follows. */
+ w[-1] = '\n';
+ if (r == lim)
+ {
+ int ch = getc (fp);
+ if (ch != '\n' && ungetc (ch, fp) != ch)
+ break;
+ }
+ else if (*r == '\n')
+ r++;
+
+ /* Copy until the next '\r'. */
+ do
+ {
+ if (r == lim)
+ return w - buf;
+ }
+ while ((*w++ = *r++) != '\r');
+ }
+
+ return w - buf;
+ }
}
return bytes_read;
@@ -715,7 +873,8 @@ scan_integer (char const *number, int base, location loc)
if (INT_MAX < num)
{
- complain_at (loc, _("integer out of range: %s"), quote (number));
+ complain_at (loc, complaint, _("integer out of range: %s"),
+ quote (number));
num = INT_MAX;
}
@@ -726,7 +885,7 @@ scan_integer (char const *number, int base, location loc)
/*------------------------------------------------------------------.
| Convert universal character name UCN to a single-byte character, |
| and return that character. Return -1 if UCN does not correspond |
-| to a single-byte character. |
+| to a single-byte character. |
`------------------------------------------------------------------*/
static int
@@ -754,22 +913,22 @@ convert_ucn_to_byte (char const *ucn)
about. */
static signed char const table[] =
{
- '\0', -1, -1, -1, -1, -1, -1, '\a',
- '\b', '\t', '\n', '\v', '\f', '\r', -1, -1,
- -1, -1, -1, -1, -1, -1, -1, -1,
- -1, -1, -1, -1, -1, -1, -1, -1,
- ' ', '!', '"', '#', '$', '%', '&', '\'',
- '(', ')', '*', '+', ',', '-', '.', '/',
- '0', '1', '2', '3', '4', '5', '6', '7',
- '8', '9', ':', ';', '<', '=', '>', '?',
- '@', 'A', 'B', 'C', 'D', 'E', 'F', 'G',
- 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O',
- 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W',
- 'X', 'Y', 'Z', '[', '\\', ']', '^', '_',
- '`', 'a', 'b', 'c', 'd', 'e', 'f', 'g',
- 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o',
- 'p', 'q', 'r', 's', 't', 'u', 'v', 'w',
- 'x', 'y', 'z', '{', '|', '}', '~'
+ '\0', -1, -1, -1, -1, -1, -1, '\a',
+ '\b', '\t', '\n', '\v', '\f', '\r', -1, -1,
+ -1, -1, -1, -1, -1, -1, -1, -1,
+ -1, -1, -1, -1, -1, -1, -1, -1,
+ ' ', '!', '"', '#', '$', '%', '&', '\'',
+ '(', ')', '*', '+', ',', '-', '.', '/',
+ '0', '1', '2', '3', '4', '5', '6', '7',
+ '8', '9', ':', ';', '<', '=', '>', '?',
+ '@', 'A', 'B', 'C', 'D', 'E', 'F', 'G',
+ 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O',
+ 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W',
+ 'X', 'Y', 'Z', '[', '\\', ']', '^', '_',
+ '`', 'a', 'b', 'c', 'd', 'e', 'f', 'g',
+ 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o',
+ 'p', 'q', 'r', 's', 't', 'u', 'v', 'w',
+ 'x', 'y', 'z', '{', '|', '}', '~'
};
code = code < sizeof table ? table[code] : -1;
@@ -781,7 +940,7 @@ convert_ucn_to_byte (char const *ucn)
/*----------------------------------------------------------------.
-| Handle `#line INT "FILE"'. ARGS has already skipped `#line '. |
+| Handle '#line INT "FILE"'. ARGS has already skipped '#line '. |
`----------------------------------------------------------------*/
static void
@@ -793,7 +952,7 @@ handle_syncline (char *args, location loc)
*strchr (file, '"') = '\0';
if (INT_MAX <= lineno)
{
- warn_at (loc, _("line number overflow"));
+ complain_at (loc, Wother, _("line number overflow"));
lineno = INT_MAX;
}
current_file = uniqstr_new (file);
@@ -803,8 +962,8 @@ handle_syncline (char *args, location loc)
/*----------------------------------------------------------------.
| For a token or comment starting at START, report message MSGID, |
-| which should say that an end marker was found before |
-| the expected TOKEN_END. |
+| which should say that an end marker was found before |
+| the expected TOKEN_END. |
`----------------------------------------------------------------*/
static void
@@ -813,7 +972,11 @@ unexpected_end (boundary start, char const *msgid, char const *token_end)
location loc;
loc.start = start;
loc.end = scanner_cursor;
- complain_at (loc, _(msgid), token_end);
+ token_end = quote (token_end);
+ // Instead of '\'', display "'".
+ if (STREQ (token_end, "'\\''"))
+ token_end = "\"'\"";
+ complain_at (loc, complaint, _(msgid), token_end);
}
@@ -825,7 +988,7 @@ unexpected_end (boundary start, char const *msgid, char const *token_end)
static void
unexpected_eof (boundary start, char const *token_end)
{
- unexpected_end (start, N_("missing `%s' at end of file"), token_end);
+ unexpected_end (start, N_("missing %s at end of file"), token_end);
}
@@ -836,7 +999,7 @@ unexpected_eof (boundary start, char const *token_end)
static void
unexpected_newline (boundary start, char const *token_end)
{
- unexpected_end (start, N_("missing `%s' at end of line"), token_end);
+ unexpected_end (start, N_("missing %s at end of line"), token_end);
}