#include "JSGlobalObjectFunctions.h"
#include "CallFrame.h"
-#include "GlobalEvalFunction.h"
+#include "Interpreter.h"
#include "JSGlobalObject.h"
#include "JSString.h"
-#include "Interpreter.h"
-#include "Parser.h"
-#include "dtoa.h"
+#include "JSStringBuilder.h"
#include "Lexer.h"
+#include "LiteralParser.h"
#include "Nodes.h"
+#include "Parser.h"
+#include "UStringBuilder.h"
+#include "dtoa.h"
#include <stdio.h>
#include <stdlib.h>
-#include <string.h>
#include <wtf/ASCIICType.h>
#include <wtf/Assertions.h>
#include <wtf/MathExtras.h>
+#include <wtf/StringExtras.h>
#include <wtf/unicode/UTF8.h>
using namespace WTF;
namespace JSC {
-static JSValuePtr encode(ExecState* exec, const ArgList& args, const char* doNotEscape)
+static JSValue encode(ExecState* exec, const char* doNotEscape)
{
- UString str = args.at(exec, 0).toString(exec);
- CString cstr = str.UTF8String(true);
- if (!cstr.c_str())
- return throwError(exec, URIError, "String contained an illegal UTF-16 sequence.");
-
- UString result = "";
- const char* p = cstr.c_str();
- for (size_t k = 0; k < cstr.size(); k++, p++) {
+ UString str = exec->argument(0).toString(exec);
+ CString cstr = str.utf8(true);
+ if (!cstr.data())
+ return throwError(exec, createURIError(exec, "String contained an illegal UTF-16 sequence."));
+
+ JSStringBuilder builder;
+ const char* p = cstr.data();
+ for (size_t k = 0; k < cstr.length(); k++, p++) {
char c = *p;
if (c && strchr(doNotEscape, c))
- result.append(c);
+ builder.append(c);
else {
char tmp[4];
snprintf(tmp, sizeof(tmp), "%%%02X", static_cast<unsigned char>(c));
- result += tmp;
+ builder.append(tmp);
}
}
- return jsString(exec, result);
+ return builder.build(exec);
}
-static JSValuePtr decode(ExecState* exec, const ArgList& args, const char* doNotUnescape, bool strict)
+static JSValue decode(ExecState* exec, const char* doNotUnescape, bool strict)
{
- UString result = "";
- UString str = args.at(exec, 0).toString(exec);
+ JSStringBuilder builder;
+ UString str = exec->argument(0).toString(exec);
int k = 0;
- int len = str.size();
- const UChar* d = str.data();
+ int len = str.length();
+ const UChar* d = str.characters();
UChar u = 0;
while (k < len) {
const UChar* p = d + k;
charLen = 0;
else if (character >= 0x10000) {
// Convert to surrogate pair.
- result.append(static_cast<UChar>(0xD800 | ((character - 0x10000) >> 10)));
+ builder.append(static_cast<UChar>(0xD800 | ((character - 0x10000) >> 10)));
u = static_cast<UChar>(0xDC00 | ((character - 0x10000) & 0x3FF));
} else
u = static_cast<UChar>(character);
}
if (charLen == 0) {
if (strict)
- return throwError(exec, URIError);
+ return throwError(exec, createURIError(exec, "URI error"));
// The only case where we don't use "strict" mode is the "unescape" function.
// For that, it's good to support the wonky "%u" syntax for compatibility with WinIE.
if (k <= len - 6 && p[1] == 'u'
}
}
k++;
- result.append(c);
+ builder.append(c);
}
- return jsString(exec, result);
+ return builder.build(exec);
}
bool isStrWhiteSpace(UChar c)
{
switch (c) {
+ // ECMA-262-5th 7.2 & 7.3
case 0x0009:
case 0x000A:
case 0x000B:
case 0x00A0:
case 0x2028:
case 0x2029:
+ case 0xFEFF:
return true;
default:
return c > 0xff && isSeparatorSpace(c);
return number;
}
+double parseIntOverflow(const UChar* s, int length, int radix)
+{
+ double number = 0.0;
+ double radixMultiplier = 1.0;
+
+ for (const UChar* p = s + length - 1; p >= s; p--) {
+ if (radixMultiplier == Inf) {
+ if (*p != '0') {
+ number = Inf;
+ break;
+ }
+ } else {
+ int digit = parseDigit(*p, radix);
+ number += digit * radixMultiplier;
+ }
+
+ radixMultiplier *= radix;
+ }
+
+ return number;
+}
+
static double parseInt(const UString& s, int radix)
{
- int length = s.size();
- const UChar* data = s.data();
+ int length = s.length();
+ const UChar* data = s.characters();
int p = 0;
while (p < length && isStrWhiteSpace(data[p]))
if (number >= mantissaOverflowLowerBound) {
if (radix == 10)
- number = WTF::strtod(s.substr(firstDigitPosition, p - firstDigitPosition).ascii(), 0);
+ number = WTF::strtod(s.substringSharingImpl(firstDigitPosition, p - firstDigitPosition).utf8().data(), 0);
else if (radix == 2 || radix == 4 || radix == 8 || radix == 16 || radix == 32)
- number = parseIntOverflow(s.substr(firstDigitPosition, p - firstDigitPosition).ascii(), p - firstDigitPosition, radix);
+ number = parseIntOverflow(s.substringSharingImpl(firstDigitPosition, p - firstDigitPosition).utf8().data(), p - firstDigitPosition, radix);
}
if (!sawDigit)
return sign * number;
}
+static const int SizeOfInfinity = 8;
+
+static bool isInfinity(const UChar* data, const UChar* end)
+{
+ return (end - data) >= SizeOfInfinity
+ && data[0] == 'I'
+ && data[1] == 'n'
+ && data[2] == 'f'
+ && data[3] == 'i'
+ && data[4] == 'n'
+ && data[5] == 'i'
+ && data[6] == 't'
+ && data[7] == 'y';
+}
+
+// See ecma-262 9.3.1
+static double jsHexIntegerLiteral(const UChar*& data, const UChar* end)
+{
+ // Hex number.
+ data += 2;
+ const UChar* firstDigitPosition = data;
+ double number = 0;
+ while (true) {
+ number = number * 16 + toASCIIHexValue(*data);
+ ++data;
+ if (data == end)
+ break;
+ if (!isASCIIHexDigit(*data))
+ break;
+ }
+ if (number >= mantissaOverflowLowerBound)
+ number = parseIntOverflow(firstDigitPosition, data - firstDigitPosition, 16);
+
+ return number;
+}
+
+// See ecma-262 9.3.1
+static double jsStrDecimalLiteral(const UChar*& data, const UChar* end)
+{
+ ASSERT(data < end);
+
+ // Copy the sting into a null-terminated byte buffer, and call strtod.
+ Vector<char, 32> byteBuffer;
+ for (const UChar* characters = data; characters < end; ++characters) {
+ UChar character = *characters;
+ byteBuffer.append(isASCII(character) ? character : 0);
+ }
+ byteBuffer.append(0);
+ char* endOfNumber;
+ double number = WTF::strtod(byteBuffer.data(), &endOfNumber);
+
+ // Check if strtod found a number; if so return it.
+ ptrdiff_t consumed = endOfNumber - byteBuffer.data();
+ if (consumed) {
+ data += consumed;
+ return number;
+ }
+
+ // Check for [+-]?Infinity
+ switch (*data) {
+ case 'I':
+ if (isInfinity(data, end)) {
+ data += SizeOfInfinity;
+ return Inf;
+ }
+ break;
+
+ case '+':
+ if (isInfinity(data + 1, end)) {
+ data += SizeOfInfinity + 1;
+ return Inf;
+ }
+ break;
+
+ case '-':
+ if (isInfinity(data + 1, end)) {
+ data += SizeOfInfinity + 1;
+ return -Inf;
+ }
+ break;
+ }
+
+ // Not a number.
+ return NaN;
+}
+
+// See ecma-262 9.3.1
+double jsToNumber(const UString& s)
+{
+ unsigned size = s.length();
+
+ if (size == 1) {
+ UChar c = s.characters()[0];
+ if (isASCIIDigit(c))
+ return c - '0';
+ if (isStrWhiteSpace(c))
+ return 0;
+ return NaN;
+ }
+
+ const UChar* data = s.characters();
+ const UChar* end = data + size;
+
+ // Skip leading white space.
+ for (; data < end; ++data) {
+ if (!isStrWhiteSpace(*data))
+ break;
+ }
+
+ // Empty string.
+ if (data == end)
+ return 0.0;
+
+ double number;
+ if (data[0] == '0' && data + 2 < end && (data[1] | 0x20) == 'x' && isASCIIHexDigit(data[2]))
+ number = jsHexIntegerLiteral(data, end);
+ else
+ number = jsStrDecimalLiteral(data, end);
+
+ // Allow trailing white space.
+ for (; data < end; ++data) {
+ if (!isStrWhiteSpace(*data))
+ break;
+ }
+ if (data != end)
+ return NaN;
+
+ return number;
+}
+
static double parseFloat(const UString& s)
{
- // Check for 0x prefix here, because toDouble allows it, but we must treat it as 0.
- // Need to skip any whitespace and then one + or - sign.
- int length = s.size();
- const UChar* data = s.data();
- int p = 0;
- while (p < length && isStrWhiteSpace(data[p]))
- ++p;
+ unsigned size = s.length();
- if (p < length && (data[p] == '+' || data[p] == '-'))
- ++p;
+ if (size == 1) {
+ UChar c = s.characters()[0];
+ if (isASCIIDigit(c))
+ return c - '0';
+ return NaN;
+ }
- if (length - p >= 2 && data[p] == '0' && (data[p + 1] == 'x' || data[p + 1] == 'X'))
- return 0;
+ const UChar* data = s.characters();
+ const UChar* end = data + size;
- return s.toDouble(true /*tolerant*/, false /* NaN for empty string */);
+ // Skip leading white space.
+ for (; data < end; ++data) {
+ if (!isStrWhiteSpace(*data))
+ break;
+ }
+
+ // Empty string.
+ if (data == end)
+ return NaN;
+
+ return jsStrDecimalLiteral(data, end);
}
-JSValuePtr globalFuncEval(ExecState* exec, JSObject* function, JSValuePtr thisValue, const ArgList& args)
+EncodedJSValue JSC_HOST_CALL globalFuncEval(ExecState* exec)
{
- JSObject* thisObject = thisValue.toThisObject(exec);
+ JSObject* thisObject = exec->hostThisValue().toThisObject(exec);
JSObject* unwrappedObject = thisObject->unwrappedObject();
- if (!unwrappedObject->isGlobalObject() || static_cast<JSGlobalObject*>(unwrappedObject)->evalFunction() != function)
- return throwError(exec, EvalError, "The \"this\" value passed to eval must be the global object from which eval originated");
+ if (!unwrappedObject->isGlobalObject() || static_cast<JSGlobalObject*>(unwrappedObject)->evalFunction() != exec->callee())
+ return throwVMError(exec, createEvalError(exec, "The \"this\" value passed to eval must be the global object from which eval originated"));
- JSValuePtr x = args.at(exec, 0);
+ JSValue x = exec->argument(0);
if (!x.isString())
- return x;
+ return JSValue::encode(x);
UString s = x.toString(exec);
- int errLine;
- UString errMsg;
-
- SourceCode source = makeSource(s);
- RefPtr<EvalNode> evalNode = exec->globalData().parser->parse<EvalNode>(exec, exec->dynamicGlobalObject()->debugger(), source, &errLine, &errMsg);
+ LiteralParser preparser(exec, s.characters(), s.length(), LiteralParser::NonStrictJSON);
+ if (JSValue parsedObject = preparser.tryLiteralParse())
+ return JSValue::encode(parsedObject);
- if (!evalNode)
- return throwError(exec, SyntaxError, errMsg, errLine, source.provider()->asID(), NULL);
+ EvalExecutable* eval = EvalExecutable::create(exec, makeSource(s), false);
+ JSObject* error = eval->compile(exec, static_cast<JSGlobalObject*>(unwrappedObject)->globalScopeChain());
+ if (error)
+ return throwVMError(exec, error);
- return exec->interpreter()->execute(evalNode.get(), exec, thisObject, static_cast<JSGlobalObject*>(unwrappedObject)->globalScopeChain().node(), exec->exceptionSlot());
+ return JSValue::encode(exec->interpreter()->execute(eval, exec, thisObject, static_cast<JSGlobalObject*>(unwrappedObject)->globalScopeChain()));
}
-JSValuePtr globalFuncParseInt(ExecState* exec, JSObject*, JSValuePtr, const ArgList& args)
+EncodedJSValue JSC_HOST_CALL globalFuncParseInt(ExecState* exec)
{
- JSValuePtr value = args.at(exec, 0);
- int32_t radix = args.at(exec, 1).toInt32(exec);
+ JSValue value = exec->argument(0);
+ int32_t radix = exec->argument(1).toInt32(exec);
- if (value.isNumber() && (radix == 0 || radix == 10)) {
- if (value.isInt32Fast())
- return value;
- double d = value.uncheckedGetNumber();
+ if (radix != 0 && radix != 10)
+ return JSValue::encode(jsNumber(parseInt(value.toString(exec), radix)));
+
+ if (value.isInt32())
+ return JSValue::encode(value);
+
+ if (value.isDouble()) {
+ double d = value.asDouble();
if (isfinite(d))
- return jsNumber(exec, (d > 0) ? floor(d) : ceil(d));
+ return JSValue::encode(jsNumber((d > 0) ? floor(d) : ceil(d)));
if (isnan(d) || isinf(d))
- return jsNaN(&exec->globalData());
- return js0();
+ return JSValue::encode(jsNaN());
+ return JSValue::encode(jsNumber(0));
}
- return jsNumber(exec, parseInt(value.toString(exec), radix));
+ return JSValue::encode(jsNumber(parseInt(value.toString(exec), radix)));
}
-JSValuePtr globalFuncParseFloat(ExecState* exec, JSObject*, JSValuePtr, const ArgList& args)
+EncodedJSValue JSC_HOST_CALL globalFuncParseFloat(ExecState* exec)
{
- return jsNumber(exec, parseFloat(args.at(exec, 0).toString(exec)));
+ return JSValue::encode(jsNumber(parseFloat(exec->argument(0).toString(exec))));
}
-JSValuePtr globalFuncIsNaN(ExecState* exec, JSObject*, JSValuePtr, const ArgList& args)
+EncodedJSValue JSC_HOST_CALL globalFuncIsNaN(ExecState* exec)
{
- return jsBoolean(isnan(args.at(exec, 0).toNumber(exec)));
+ return JSValue::encode(jsBoolean(isnan(exec->argument(0).toNumber(exec))));
}
-JSValuePtr globalFuncIsFinite(ExecState* exec, JSObject*, JSValuePtr, const ArgList& args)
+EncodedJSValue JSC_HOST_CALL globalFuncIsFinite(ExecState* exec)
{
- double n = args.at(exec, 0).toNumber(exec);
- return jsBoolean(!isnan(n) && !isinf(n));
+ double n = exec->argument(0).toNumber(exec);
+ return JSValue::encode(jsBoolean(!isnan(n) && !isinf(n)));
}
-JSValuePtr globalFuncDecodeURI(ExecState* exec, JSObject*, JSValuePtr, const ArgList& args)
+EncodedJSValue JSC_HOST_CALL globalFuncDecodeURI(ExecState* exec)
{
static const char do_not_unescape_when_decoding_URI[] =
"#$&+,/:;=?@";
- return decode(exec, args, do_not_unescape_when_decoding_URI, true);
+ return JSValue::encode(decode(exec, do_not_unescape_when_decoding_URI, true));
}
-JSValuePtr globalFuncDecodeURIComponent(ExecState* exec, JSObject*, JSValuePtr, const ArgList& args)
+EncodedJSValue JSC_HOST_CALL globalFuncDecodeURIComponent(ExecState* exec)
{
- return decode(exec, args, "", true);
+ return JSValue::encode(decode(exec, "", true));
}
-JSValuePtr globalFuncEncodeURI(ExecState* exec, JSObject*, JSValuePtr, const ArgList& args)
+EncodedJSValue JSC_HOST_CALL globalFuncEncodeURI(ExecState* exec)
{
static const char do_not_escape_when_encoding_URI[] =
"ABCDEFGHIJKLMNOPQRSTUVWXYZ"
"0123456789"
"!#$&'()*+,-./:;=?@_~";
- return encode(exec, args, do_not_escape_when_encoding_URI);
+ return JSValue::encode(encode(exec, do_not_escape_when_encoding_URI));
}
-JSValuePtr globalFuncEncodeURIComponent(ExecState* exec, JSObject*, JSValuePtr, const ArgList& args)
+EncodedJSValue JSC_HOST_CALL globalFuncEncodeURIComponent(ExecState* exec)
{
static const char do_not_escape_when_encoding_URI_component[] =
"ABCDEFGHIJKLMNOPQRSTUVWXYZ"
"0123456789"
"!'()*-._~";
- return encode(exec, args, do_not_escape_when_encoding_URI_component);
+ return JSValue::encode(encode(exec, do_not_escape_when_encoding_URI_component));
}
-JSValuePtr globalFuncEscape(ExecState* exec, JSObject*, JSValuePtr, const ArgList& args)
+EncodedJSValue JSC_HOST_CALL globalFuncEscape(ExecState* exec)
{
static const char do_not_escape[] =
"ABCDEFGHIJKLMNOPQRSTUVWXYZ"
"0123456789"
"*+-./@_";
- UString result = "";
- UString s;
- UString str = args.at(exec, 0).toString(exec);
- const UChar* c = str.data();
- for (int k = 0; k < str.size(); k++, c++) {
+ JSStringBuilder builder;
+ UString str = exec->argument(0).toString(exec);
+ const UChar* c = str.characters();
+ for (unsigned k = 0; k < str.length(); k++, c++) {
int u = c[0];
if (u > 255) {
char tmp[7];
snprintf(tmp, sizeof(tmp), "%%u%04X", u);
- s = UString(tmp);
+ builder.append(tmp);
} else if (u != 0 && strchr(do_not_escape, static_cast<char>(u)))
- s = UString(c, 1);
+ builder.append(c, 1);
else {
char tmp[4];
snprintf(tmp, sizeof(tmp), "%%%02X", u);
- s = UString(tmp);
+ builder.append(tmp);
}
- result += s;
}
- return jsString(exec, result);
+ return JSValue::encode(builder.build(exec));
}
-JSValuePtr globalFuncUnescape(ExecState* exec, JSObject*, JSValuePtr, const ArgList& args)
+EncodedJSValue JSC_HOST_CALL globalFuncUnescape(ExecState* exec)
{
- UString result = "";
- UString str = args.at(exec, 0).toString(exec);
+ UStringBuilder builder;
+ UString str = exec->argument(0).toString(exec);
int k = 0;
- int len = str.size();
+ int len = str.length();
while (k < len) {
- const UChar* c = str.data() + k;
+ const UChar* c = str.characters() + k;
UChar u;
if (c[0] == '%' && k <= len - 6 && c[1] == 'u') {
- if (Lexer::isHexDigit(c[2]) && Lexer::isHexDigit(c[3]) && Lexer::isHexDigit(c[4]) && Lexer::isHexDigit(c[5])) {
+ if (isASCIIHexDigit(c[2]) && isASCIIHexDigit(c[3]) && isASCIIHexDigit(c[4]) && isASCIIHexDigit(c[5])) {
u = Lexer::convertUnicode(c[2], c[3], c[4], c[5]);
c = &u;
k += 5;
}
- } else if (c[0] == '%' && k <= len - 3 && Lexer::isHexDigit(c[1]) && Lexer::isHexDigit(c[2])) {
+ } else if (c[0] == '%' && k <= len - 3 && isASCIIHexDigit(c[1]) && isASCIIHexDigit(c[2])) {
u = UChar(Lexer::convertHex(c[1], c[2]));
c = &u;
k += 2;
}
k++;
- result.append(*c);
+ builder.append(*c);
}
- return jsString(exec, result);
-}
-
-#ifndef NDEBUG
-JSValuePtr globalFuncJSCPrint(ExecState* exec, JSObject*, JSValuePtr, const ArgList& args)
-{
- CStringBuffer string;
- args.at(exec, 0).toString(exec).getCString(string);
- puts(string.data());
- return jsUndefined();
+ return JSValue::encode(jsString(exec, builder.toUString()));
}
-#endif
} // namespace JSC
projects / apple / javascriptcore.git / blobdiff