diff options
Diffstat (limited to 'src/3rdparty/javascriptcore/JavaScriptCore/runtime/StringPrototype.cpp')
| -rw-r--r-- | src/3rdparty/javascriptcore/JavaScriptCore/runtime/StringPrototype.cpp | 171 |
1 files changed, 124 insertions, 47 deletions
diff --git a/src/3rdparty/javascriptcore/JavaScriptCore/runtime/StringPrototype.cpp b/src/3rdparty/javascriptcore/JavaScriptCore/runtime/StringPrototype.cpp index c9a32b6..d002e07 100644 --- a/src/3rdparty/javascriptcore/JavaScriptCore/runtime/StringPrototype.cpp +++ b/src/3rdparty/javascriptcore/JavaScriptCore/runtime/StringPrototype.cpp @@ -25,9 +25,11 @@ #include "CachedCall.h" #include "Error.h" #include "Executable.h" +#include "JSGlobalObjectFunctions.h" #include "JSArray.h" #include "JSFunction.h" #include "ObjectPrototype.h" +#include "Operations.h" #include "PropertyNameArray.h" #include "RegExpConstructor.h" #include "RegExpObject.h" @@ -72,6 +74,10 @@ static JSValue JSC_HOST_CALL stringProtoFuncFontsize(ExecState*, JSObject*, JSVa static JSValue JSC_HOST_CALL stringProtoFuncAnchor(ExecState*, JSObject*, JSValue, const ArgList&); static JSValue JSC_HOST_CALL stringProtoFuncLink(ExecState*, JSObject*, JSValue, const ArgList&); +static JSValue JSC_HOST_CALL stringProtoFuncTrim(ExecState*, JSObject*, JSValue, const ArgList&); +static JSValue JSC_HOST_CALL stringProtoFuncTrimLeft(ExecState*, JSObject*, JSValue, const ArgList&); +static JSValue JSC_HOST_CALL stringProtoFuncTrimRight(ExecState*, JSObject*, JSValue, const ArgList&); + } #include "StringPrototype.lut.h" @@ -117,11 +123,14 @@ const ClassInfo StringPrototype::info = { "String", &StringObject::info, 0, Exec fontsize stringProtoFuncFontsize DontEnum|Function 1 anchor stringProtoFuncAnchor DontEnum|Function 1 link stringProtoFuncLink DontEnum|Function 1 + trim stringProtoFuncTrim DontEnum|Function 0 + trimLeft stringProtoFuncTrimLeft DontEnum|Function 0 + trimRight stringProtoFuncTrimRight DontEnum|Function 0 @end */ // ECMA 15.5.4 -StringPrototype::StringPrototype(ExecState* exec, PassRefPtr<Structure> structure) +StringPrototype::StringPrototype(ExecState* exec, NonNullPassRefPtr<Structure> structure) : StringObject(exec, structure) { // The constructor will be added later, after StringConstructor has been built @@ -140,12 +149,11 @@ bool StringPrototype::getOwnPropertyDescriptor(ExecState* exec, const Identifier // ------------------------------ Functions -------------------------- -static inline UString substituteBackreferences(const UString& replacement, const UString& source, const int* ovector, RegExp* reg) +static NEVER_INLINE UString substituteBackreferencesSlow(const UString& replacement, const UString& source, const int* ovector, RegExp* reg, int i) { - UString substitutedReplacement; + Vector<UChar> substitutedReplacement; int offset = 0; - int i = -1; - while ((i = replacement.find('$', i + 1)) != -1) { + do { if (i + 1 == replacement.size()) break; @@ -197,15 +205,21 @@ static inline UString substituteBackreferences(const UString& replacement, const i += 1 + advance; offset = i + 1; substitutedReplacement.append(source.data() + backrefStart, backrefLength); - } - - if (!offset) - return replacement; + } while ((i = replacement.find('$', i + 1)) != -1); if (replacement.size() - offset) substitutedReplacement.append(replacement.data() + offset, replacement.size() - offset); - return substitutedReplacement; + substitutedReplacement.shrinkToFit(); + return UString::adopt(substitutedReplacement); +} + +static inline UString substituteBackreferences(const UString& replacement, const UString& source, const int* ovector, RegExp* reg) +{ + int i = replacement.find('$', 0); + if (UNLIKELY(i != -1)) + return substituteBackreferencesSlow(replacement, source, ovector, reg, i); + return replacement; } static inline int localeCompare(const UString& a, const UString& b) @@ -216,7 +230,7 @@ static inline int localeCompare(const UString& a, const UString& b) JSValue JSC_HOST_CALL stringProtoFuncReplace(ExecState* exec, JSObject*, JSValue thisValue, const ArgList& args) { JSString* sourceVal = thisValue.toThisJSString(exec); - const UString& source = sourceVal->value(); + const UString& source = sourceVal->value(exec); JSValue pattern = args.at(0); @@ -249,7 +263,7 @@ JSValue JSC_HOST_CALL stringProtoFuncReplace(ExecState* exec, JSObject*, JSValue return jsNull(); while (true) { int matchIndex; - int matchLen; + int matchLen = 0; int* ovector; regExpConstructor->performMatch(reg, source, startPosition, matchIndex, matchLen, &ovector); if (matchIndex < 0) @@ -273,7 +287,8 @@ JSValue JSC_HOST_CALL stringProtoFuncReplace(ExecState* exec, JSObject*, JSValue cachedCall.setArgument(i++, sourceVal); cachedCall.setThis(exec->globalThisValue()); - replacements.append(cachedCall.call().toString(cachedCall.newCallFrame())); + JSValue result = cachedCall.call(); + replacements.append(result.toString(cachedCall.newCallFrame(exec))); if (exec->hadException()) break; @@ -290,7 +305,7 @@ JSValue JSC_HOST_CALL stringProtoFuncReplace(ExecState* exec, JSObject*, JSValue } else { do { int matchIndex; - int matchLen; + int matchLen = 0; int* ovector; regExpConstructor->performMatch(reg, source, startPosition, matchIndex, matchLen, &ovector); if (matchIndex < 0) @@ -414,12 +429,14 @@ JSValue JSC_HOST_CALL stringProtoFuncCharCodeAt(ExecState* exec, JSObject*, JSVa JSValue JSC_HOST_CALL stringProtoFuncConcat(ExecState* exec, JSObject*, JSValue thisValue, const ArgList& args) { - UString s = thisValue.toThisString(exec); + if (thisValue.isString() && (args.size() == 1)) { + JSValue v = args.at(0); + return v.isString() + ? jsString(exec, asString(thisValue), asString(v)) + : jsString(exec, asString(thisValue), v.toString(exec)); + } - ArgList::const_iterator end = args.end(); - for (ArgList::const_iterator it = args.begin(); it != end; ++it) - s += (*it).toString(exec); - return jsString(exec, s); + return jsString(exec, thisValue, args); } JSValue JSC_HOST_CALL stringProtoFuncIndexOf(ExecState* exec, JSObject*, JSValue thisValue, const ArgList& args) @@ -461,6 +478,11 @@ JSValue JSC_HOST_CALL stringProtoFuncLastIndexOf(ExecState* exec, JSObject*, JSV dpos = 0; else if (!(dpos <= len)) // true for NaN dpos = len; +#if OS(SYMBIAN) + // Work around for broken NaN compare operator + else if (isnan(dpos)) + dpos = len; +#endif return jsNumber(exec, s.rfind(u2, static_cast<int>(dpos))); } @@ -485,7 +507,7 @@ JSValue JSC_HOST_CALL stringProtoFuncMatch(ExecState* exec, JSObject*, JSValue t } RegExpConstructor* regExpConstructor = exec->lexicalGlobalObject()->regExpConstructor(); int pos; - int matchLength; + int matchLength = 0; regExpConstructor->performMatch(reg.get(), u, 0, pos, matchLength); if (!(reg->global())) { // case without 'g' flag is handled like RegExp.prototype.exec @@ -535,7 +557,7 @@ JSValue JSC_HOST_CALL stringProtoFuncSearch(ExecState* exec, JSObject*, JSValue } RegExpConstructor* regExpConstructor = exec->lexicalGlobalObject()->regExpConstructor(); int pos; - int matchLength; + int matchLength = 0; regExpConstructor->performMatch(reg.get(), u, 0, pos, matchLength); return jsNumber(exec, pos); } @@ -683,7 +705,7 @@ JSValue JSC_HOST_CALL stringProtoFuncSubstring(ExecState* exec, JSObject*, JSVal JSValue JSC_HOST_CALL stringProtoFuncToLowerCase(ExecState* exec, JSObject*, JSValue thisValue, const ArgList&) { JSString* sVal = thisValue.toThisJSString(exec); - const UString& s = sVal->value(); + const UString& s = sVal->value(exec); int sSize = s.size(); if (!sSize) @@ -699,7 +721,7 @@ JSValue JSC_HOST_CALL stringProtoFuncToLowerCase(ExecState* exec, JSObject*, JSV buffer[i] = toASCIILower(c); } if (!(ored & ~0x7f)) - return jsString(exec, UString(buffer.releaseBuffer(), sSize, false)); + return jsString(exec, UString::adopt(buffer)); bool error; int length = Unicode::toLower(buffer.data(), sSize, sData, sSize, &error); @@ -709,15 +731,18 @@ JSValue JSC_HOST_CALL stringProtoFuncToLowerCase(ExecState* exec, JSObject*, JSV if (error) return sVal; } - if (length == sSize && memcmp(buffer.data(), sData, length * sizeof(UChar)) == 0) - return sVal; - return jsString(exec, UString(buffer.releaseBuffer(), length, false)); + if (length == sSize) { + if (memcmp(buffer.data(), sData, length * sizeof(UChar)) == 0) + return sVal; + } else + buffer.resize(length); + return jsString(exec, UString::adopt(buffer)); } JSValue JSC_HOST_CALL stringProtoFuncToUpperCase(ExecState* exec, JSObject*, JSValue thisValue, const ArgList&) { JSString* sVal = thisValue.toThisJSString(exec); - const UString& s = sVal->value(); + const UString& s = sVal->value(exec); int sSize = s.size(); if (!sSize) @@ -733,7 +758,7 @@ JSValue JSC_HOST_CALL stringProtoFuncToUpperCase(ExecState* exec, JSObject*, JSV buffer[i] = toASCIIUpper(c); } if (!(ored & ~0x7f)) - return jsString(exec, UString(buffer.releaseBuffer(), sSize, false)); + return jsString(exec, UString::adopt(buffer)); bool error; int length = Unicode::toUpper(buffer.data(), sSize, sData, sSize, &error); @@ -743,9 +768,12 @@ JSValue JSC_HOST_CALL stringProtoFuncToUpperCase(ExecState* exec, JSObject*, JSV if (error) return sVal; } - if (length == sSize && memcmp(buffer.data(), sData, length * sizeof(UChar)) == 0) - return sVal; - return jsString(exec, UString(buffer.releaseBuffer(), length, false)); + if (length == sSize) { + if (memcmp(buffer.data(), sData, length * sizeof(UChar)) == 0) + return sVal; + } else + buffer.resize(length); + return jsString(exec, UString::adopt(buffer)); } JSValue JSC_HOST_CALL stringProtoFuncLocaleCompare(ExecState* exec, JSObject*, JSValue thisValue, const ArgList& args) @@ -761,62 +789,62 @@ JSValue JSC_HOST_CALL stringProtoFuncLocaleCompare(ExecState* exec, JSObject*, J JSValue JSC_HOST_CALL stringProtoFuncBig(ExecState* exec, JSObject*, JSValue thisValue, const ArgList&) { UString s = thisValue.toThisString(exec); - return jsNontrivialString(exec, "<big>" + s + "</big>"); + return jsNontrivialString(exec, makeString("<big>", s, "</big>")); } JSValue JSC_HOST_CALL stringProtoFuncSmall(ExecState* exec, JSObject*, JSValue thisValue, const ArgList&) { UString s = thisValue.toThisString(exec); - return jsNontrivialString(exec, "<small>" + s + "</small>"); + return jsNontrivialString(exec, makeString("<small>", s, "</small>")); } JSValue JSC_HOST_CALL stringProtoFuncBlink(ExecState* exec, JSObject*, JSValue thisValue, const ArgList&) { UString s = thisValue.toThisString(exec); - return jsNontrivialString(exec, "<blink>" + s + "</blink>"); + return jsNontrivialString(exec, makeString("<blink>", s, "</blink>")); } JSValue JSC_HOST_CALL stringProtoFuncBold(ExecState* exec, JSObject*, JSValue thisValue, const ArgList&) { UString s = thisValue.toThisString(exec); - return jsNontrivialString(exec, "<b>" + s + "</b>"); + return jsNontrivialString(exec, makeString("<b>", s, "</b>")); } JSValue JSC_HOST_CALL stringProtoFuncFixed(ExecState* exec, JSObject*, JSValue thisValue, const ArgList&) { UString s = thisValue.toThisString(exec); - return jsString(exec, "<tt>" + s + "</tt>"); + return jsString(exec, makeString("<tt>", s, "</tt>")); } JSValue JSC_HOST_CALL stringProtoFuncItalics(ExecState* exec, JSObject*, JSValue thisValue, const ArgList&) { UString s = thisValue.toThisString(exec); - return jsNontrivialString(exec, "<i>" + s + "</i>"); + return jsNontrivialString(exec, makeString("<i>", s, "</i>")); } JSValue JSC_HOST_CALL stringProtoFuncStrike(ExecState* exec, JSObject*, JSValue thisValue, const ArgList&) { UString s = thisValue.toThisString(exec); - return jsNontrivialString(exec, "<strike>" + s + "</strike>"); + return jsNontrivialString(exec, makeString("<strike>", s, "</strike>")); } JSValue JSC_HOST_CALL stringProtoFuncSub(ExecState* exec, JSObject*, JSValue thisValue, const ArgList&) { UString s = thisValue.toThisString(exec); - return jsNontrivialString(exec, "<sub>" + s + "</sub>"); + return jsNontrivialString(exec, makeString("<sub>", s, "</sub>")); } JSValue JSC_HOST_CALL stringProtoFuncSup(ExecState* exec, JSObject*, JSValue thisValue, const ArgList&) { UString s = thisValue.toThisString(exec); - return jsNontrivialString(exec, "<sup>" + s + "</sup>"); + return jsNontrivialString(exec, makeString("<sup>", s, "</sup>")); } JSValue JSC_HOST_CALL stringProtoFuncFontcolor(ExecState* exec, JSObject*, JSValue thisValue, const ArgList& args) { UString s = thisValue.toThisString(exec); JSValue a0 = args.at(0); - return jsNontrivialString(exec, "<font color=\"" + a0.toString(exec) + "\">" + s + "</font>"); + return jsNontrivialString(exec, makeString("<font color=\"", a0.toString(exec), "\">", s, "</font>")); } JSValue JSC_HOST_CALL stringProtoFuncFontsize(ExecState* exec, JSObject*, JSValue thisValue, const ArgList& args) @@ -829,7 +857,8 @@ JSValue JSC_HOST_CALL stringProtoFuncFontsize(ExecState* exec, JSObject*, JSValu unsigned stringSize = s.size(); unsigned bufferSize = 22 + stringSize; UChar* buffer; - if (!tryFastMalloc(bufferSize * sizeof(UChar)).getValue(buffer)) + PassRefPtr<UStringImpl> impl = UStringImpl::tryCreateUninitialized(bufferSize, buffer); + if (!impl) return jsUndefined(); buffer[0] = '<'; buffer[1] = 'f'; @@ -854,17 +883,17 @@ JSValue JSC_HOST_CALL stringProtoFuncFontsize(ExecState* exec, JSObject*, JSValu buffer[19 + stringSize] = 'n'; buffer[20 + stringSize] = 't'; buffer[21 + stringSize] = '>'; - return jsNontrivialString(exec, UString(buffer, bufferSize, false)); + return jsNontrivialString(exec, impl); } - return jsNontrivialString(exec, "<font size=\"" + a0.toString(exec) + "\">" + s + "</font>"); + return jsNontrivialString(exec, makeString("<font size=\"", a0.toString(exec), "\">", s, "</font>")); } JSValue JSC_HOST_CALL stringProtoFuncAnchor(ExecState* exec, JSObject*, JSValue thisValue, const ArgList& args) { UString s = thisValue.toThisString(exec); JSValue a0 = args.at(0); - return jsNontrivialString(exec, "<a name=\"" + a0.toString(exec) + "\">" + s + "</a>"); + return jsNontrivialString(exec, makeString("<a name=\"", a0.toString(exec), "\">", s, "</a>")); } JSValue JSC_HOST_CALL stringProtoFuncLink(ExecState* exec, JSObject*, JSValue thisValue, const ArgList& args) @@ -877,7 +906,8 @@ JSValue JSC_HOST_CALL stringProtoFuncLink(ExecState* exec, JSObject*, JSValue th unsigned stringSize = s.size(); unsigned bufferSize = 15 + linkTextSize + stringSize; UChar* buffer; - if (!tryFastMalloc(bufferSize * sizeof(UChar)).getValue(buffer)) + PassRefPtr<UStringImpl> impl = UStringImpl::tryCreateUninitialized(bufferSize, buffer); + if (!impl) return jsUndefined(); buffer[0] = '<'; buffer[1] = 'a'; @@ -896,7 +926,54 @@ JSValue JSC_HOST_CALL stringProtoFuncLink(ExecState* exec, JSObject*, JSValue th buffer[12 + linkTextSize + stringSize] = '/'; buffer[13 + linkTextSize + stringSize] = 'a'; buffer[14 + linkTextSize + stringSize] = '>'; - return jsNontrivialString(exec, UString(buffer, bufferSize, false)); + return jsNontrivialString(exec, impl); } +enum { + TrimLeft = 1, + TrimRight = 2 +}; + +static inline bool isTrimWhitespace(UChar c) +{ + return isStrWhiteSpace(c) || c == 0x200b; +} + +static inline JSValue trimString(ExecState* exec, JSValue thisValue, int trimKind) +{ + UString str = thisValue.toThisString(exec); + int left = 0; + if (trimKind & TrimLeft) { + while (left < str.size() && isTrimWhitespace(str[left])) + left++; + } + int right = str.size(); + if (trimKind & TrimRight) { + while (right > left && isTrimWhitespace(str[right - 1])) + right--; + } + + // Don't gc allocate a new string if we don't have to. + if (left == 0 && right == str.size() && thisValue.isString()) + return thisValue; + + return jsString(exec, str.substr(left, right - left)); +} + +JSValue JSC_HOST_CALL stringProtoFuncTrim(ExecState* exec, JSObject*, JSValue thisValue, const ArgList&) +{ + return trimString(exec, thisValue, TrimLeft | TrimRight); +} + +JSValue JSC_HOST_CALL stringProtoFuncTrimLeft(ExecState* exec, JSObject*, JSValue thisValue, const ArgList&) +{ + return trimString(exec, thisValue, TrimLeft); +} + +JSValue JSC_HOST_CALL stringProtoFuncTrimRight(ExecState* exec, JSObject*, JSValue thisValue, const ArgList&) +{ + return trimString(exec, thisValue, TrimRight); +} + + } // namespace JSC |