/*
* Copyright (C) 1999-2001 Harri Porten (porten@kde.org)
* Copyright (C) 2001 Peter Kelly (pmk@post.com)
- * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
+ * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2014 Apple Inc. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
#ifndef JSString_h
#define JSString_h
+
#include "CallFrame.h"
#include "CommonIdentifiers.h"
#include "Identifier.h"
#include "PropertyDescriptor.h"
#include "PropertySlot.h"
#include "Structure.h"
+#include <array>
+#include <wtf/text/StringView.h>
namespace JSC {
JSString* jsSingleCharacterString(VM*, UChar);
JSString* jsSingleCharacterString(ExecState*, UChar);
-JSString* jsSingleCharacterSubstring(ExecState*, const String&, unsigned offset);
JSString* jsSubstring(VM*, const String&, unsigned offset, unsigned length);
JSString* jsSubstring(ExecState*, const String&, unsigned offset, unsigned length);
+JSString* jsSubstring8(VM*, const String&, unsigned offset, unsigned length);
+JSString* jsSubstring8(ExecState*, const String&, unsigned offset, unsigned length);
// Non-trivial strings are two or more characters long.
// These functions are faster than just calling jsString.
JSString* jsNontrivialString(VM*, const String&);
JSString* jsNontrivialString(ExecState*, const String&);
+JSString* jsNontrivialString(ExecState*, String&&);
// Should be used for strings that are owned by an object that will
// likely outlive the JSValue this makes, such as the parse tree or a
JSRopeString* jsStringBuilder(VM*);
+bool isJSString(JSValue);
+JSString* asString(JSValue);
+
+struct StringViewWithUnderlyingString {
+ StringView view;
+ String underlyingString;
+};
+
class JSString : public JSCell {
public:
friend class JIT;
friend struct ThunkHelpers;
typedef JSCell Base;
+ static const unsigned StructureFlags = Base::StructureFlags | OverridesGetOwnPropertySlot | InterceptsGetOwnPropertySlotByIndexEvenWhenLengthIsNotZero | StructureIsImmortal;
static const bool needsDestruction = true;
- static const bool hasImmortalStructure = true;
static void destroy(JSCell*);
private:
Base::finishCreation(vm);
m_length = length;
setIs8Bit(m_value.impl()->is8Bit());
- Heap::heap(this)->reportExtraMemoryCost(cost);
+ Heap::heap(this)->reportExtraMemoryAllocated(cost);
vm.m_newStringsSinceLastHashCons++;
}
setIs8Bit(true);
vm.m_newStringsSinceLastHashCons++;
}
-
+
public:
static JSString* create(VM& vm, PassRefPtr<StringImpl> value)
{
ASSERT(value);
- size_t length = value->length();
+ int32_t length = value->length();
+ RELEASE_ASSERT(length >= 0);
size_t cost = value->cost();
JSString* newString = new (NotNull, allocateCell<JSString>(vm.heap)) JSString(vm, value);
newString->finishCreation(vm, length, cost);
return newString;
}
+ Identifier toIdentifier(ExecState*) const;
+ AtomicString toAtomicString(ExecState*) const;
+ RefPtr<AtomicStringImpl> toExistingAtomicString(ExecState*) const;
+
+ class SafeView;
+ SafeView view(ExecState*) const;
+ StringViewWithUnderlyingString viewWithUnderlyingString(ExecState&) const;
+
const String& value(ExecState*) const;
const String& tryGetValue() const;
- unsigned length() { return m_length; }
+ const StringImpl* tryGetValueImpl() const;
+ unsigned length() const { return m_length; }
JSValue toPrimitive(ExecState*, PreferredPrimitiveType) const;
- JS_EXPORT_PRIVATE bool toBoolean() const;
+ bool toBoolean() const { return !!m_length; }
bool getPrimitiveNumber(ExecState*, double& number, JSValue&) const;
JSObject* toObject(ExecState*, JSGlobalObject*) const;
double toNumber(ExecState*) const;
-
+
bool getStringPropertySlot(ExecState*, PropertyName, PropertySlot&);
bool getStringPropertySlot(ExecState*, unsigned propertyName, PropertySlot&);
bool getStringPropertyDescriptor(ExecState*, PropertyName, PropertyDescriptor&);
static Structure* createStructure(VM& vm, JSGlobalObject* globalObject, JSValue proto)
{
- return Structure::create(vm, globalObject, proto, TypeInfo(StringType, OverridesGetOwnPropertySlot | InterceptsGetOwnPropertySlotByIndexEvenWhenLengthIsNotZero), &s_info);
+ return Structure::create(vm, globalObject, proto, TypeInfo(StringType, StructureFlags), info());
}
static size_t offsetOfLength() { return OBJECT_OFFSETOF(JSString, m_length); }
static size_t offsetOfFlags() { return OBJECT_OFFSETOF(JSString, m_flags); }
static size_t offsetOfValue() { return OBJECT_OFFSETOF(JSString, m_value); }
- static JS_EXPORTDATA const ClassInfo s_info;
+ DECLARE_EXPORT_INFO;
+ static void dumpToStream(const JSCell*, PrintStream&);
static void visitChildren(JSCell*, SlotVisitor&);
enum {
protected:
friend class JSValue;
-
+
bool isRope() const { return m_value.isNull(); }
+ bool isSubstring() const;
bool is8Bit() const { return m_flags & Is8Bit; }
- void setIs8Bit(bool flag)
+ void setIs8Bit(bool flag) const
{
if (flag)
m_flags |= Is8Bit;
bool tryHashConsLock();
void releaseHashConsLock();
- unsigned m_flags;
-
+ mutable unsigned m_flags;
+
// A string is represented either by a String or a rope of fibers.
unsigned m_length;
mutable String m_value;
private:
friend class LLIntOffsetsExtractor;
-
- static JSObject* toThisObject(JSCell*, ExecState*);
- // Actually getPropertySlot, not getOwnPropertySlot (see JSCell).
- static bool getOwnPropertySlot(JSCell*, ExecState*, PropertyName, PropertySlot&);
- static bool getOwnPropertySlotByIndex(JSCell*, ExecState*, unsigned propertyName, PropertySlot&);
+ static JSValue toThis(JSCell*, ExecState*, ECMAMode);
String& string() { ASSERT(!isRope()); return m_value; }
+ StringView unsafeView(ExecState&) const;
friend JSValue jsString(ExecState*, JSString*, JSString*);
friend JSString* jsSubstring(ExecState*, JSString*, unsigned offset, unsigned length);
};
-class JSRopeString : public JSString {
+class JSRopeString final : public JSString {
friend class JSString;
friend JSRopeString* jsStringBuilder(VM*);
+public:
class RopeBuilder {
public:
RopeBuilder(VM& vm)
{
}
- void append(JSString* jsString)
+ bool append(JSString* jsString)
{
if (m_index == JSRopeString::s_maxInternalRopeLength)
expand();
+ if (static_cast<int32_t>(m_jsString->length() + jsString->length()) < 0) {
+ m_jsString = nullptr;
+ return false;
+ }
m_jsString->append(m_vm, m_index++, jsString);
+ return true;
}
JSRopeString* release()
{
+ RELEASE_ASSERT(m_jsString);
JSRopeString* tmp = m_jsString;
m_jsString = 0;
return tmp;
}
- unsigned length() { return m_jsString->m_length; }
+ unsigned length() const { return m_jsString->m_length; }
private:
void expand();
-
+
VM& m_vm;
JSRopeString* m_jsString;
size_t m_index;
};
-
+
private:
JSRopeString(VM& vm)
: JSString(vm)
Base::finishCreation(vm);
m_length = s1->length() + s2->length();
setIs8Bit(s1->is8Bit() && s2->is8Bit());
- m_fibers[0].set(vm, this, s1);
- m_fibers[1].set(vm, this, s2);
+ setIsSubstring(false);
+ fiber(0).set(vm, this, s1);
+ fiber(1).set(vm, this, s2);
+ fiber(2).clear();
}
-
+
void finishCreation(VM& vm, JSString* s1, JSString* s2, JSString* s3)
{
Base::finishCreation(vm);
m_length = s1->length() + s2->length() + s3->length();
setIs8Bit(s1->is8Bit() && s2->is8Bit() && s3->is8Bit());
- m_fibers[0].set(vm, this, s1);
- m_fibers[1].set(vm, this, s2);
- m_fibers[2].set(vm, this, s3);
+ setIsSubstring(false);
+ fiber(0).set(vm, this, s1);
+ fiber(1).set(vm, this, s2);
+ fiber(2).set(vm, this, s3);
+ }
+
+ void finishCreation(ExecState& exec, JSString& base, unsigned offset, unsigned length)
+ {
+ VM& vm = exec.vm();
+ Base::finishCreation(vm);
+ ASSERT(!sumOverflows<int32_t>(offset, length));
+ ASSERT(offset + length <= base.length());
+ m_length = length;
+ setIs8Bit(base.is8Bit());
+ setIsSubstring(true);
+ if (base.isSubstring()) {
+ JSRopeString& baseRope = static_cast<JSRopeString&>(base);
+ substringBase().set(vm, this, baseRope.substringBase().get());
+ substringOffset() = baseRope.substringOffset() + offset;
+ } else {
+ substringBase().set(vm, this, &base);
+ substringOffset() = offset;
+
+ // For now, let's not allow substrings with a rope base.
+ // Resolve non-substring rope bases so we don't have to deal with it.
+ // FIXME: Evaluate if this would be worth adding more branches.
+ if (base.isRope())
+ static_cast<JSRopeString&>(base).resolveRope(&exec);
+ }
}
void finishCreation(VM& vm)
{
JSString::finishCreation(vm);
+ setIsSubstring(false);
+ fiber(0).clear();
+ fiber(1).clear();
+ fiber(2).clear();
}
void append(VM& vm, size_t index, JSString* jsString)
{
- m_fibers[index].set(vm, this, jsString);
+ fiber(index).set(vm, this, jsString);
m_length += jsString->m_length;
+ RELEASE_ASSERT(static_cast<int32_t>(m_length) >= 0);
setIs8Bit(is8Bit() && jsString->is8Bit());
}
return newString;
}
+ static JSString* create(ExecState& exec, JSString& base, unsigned offset, unsigned length)
+ {
+ JSRopeString* newString = new (NotNull, allocateCell<JSRopeString>(exec.vm().heap)) JSRopeString(exec.vm());
+ newString->finishCreation(exec, base, offset, length);
+ return newString;
+ }
+
void visitFibers(SlotVisitor&);
-
- static ptrdiff_t offsetOfFibers() { return OBJECT_OFFSETOF(JSRopeString, m_fibers); }
+
+ static ptrdiff_t offsetOfFibers() { return OBJECT_OFFSETOF(JSRopeString, u); }
static const unsigned s_maxInternalRopeLength = 3;
-
+
private:
- friend JSValue jsString(ExecState*, Register*, unsigned);
+ friend JSValue jsStringFromRegisterArray(ExecState*, Register*, unsigned);
friend JSValue jsStringFromArguments(ExecState*, JSValue);
JS_EXPORT_PRIVATE void resolveRope(ExecState*) const;
+ JS_EXPORT_PRIVATE void resolveRopeToAtomicString(ExecState*) const;
+ JS_EXPORT_PRIVATE RefPtr<AtomicStringImpl> resolveRopeToExistingAtomicString(ExecState*) const;
void resolveRopeSlowCase8(LChar*) const;
void resolveRopeSlowCase(UChar*) const;
void outOfMemory(ExecState*) const;
-
- JSString* getIndexSlowCase(ExecState*, unsigned);
+ void resolveRopeInternal8(LChar*) const;
+ void resolveRopeInternal8NoSubstring(LChar*) const;
+ void resolveRopeInternal16(UChar*) const;
+ void resolveRopeInternal16NoSubstring(UChar*) const;
+ void clearFibers() const;
+ StringView unsafeView(ExecState&) const;
+ StringViewWithUnderlyingString viewWithUnderlyingString(ExecState&) const;
+
+ WriteBarrierBase<JSString>& fiber(unsigned i) const
+ {
+ ASSERT(!isSubstring());
+ ASSERT(i < s_maxInternalRopeLength);
+ return u[i].string;
+ }
+
+ WriteBarrierBase<JSString>& substringBase() const
+ {
+ return u[1].string;
+ }
- mutable FixedArray<WriteBarrier<JSString>, s_maxInternalRopeLength> m_fibers;
+ uintptr_t& substringOffset() const
+ {
+ return u[2].number;
+ }
+
+ static uintptr_t notSubstringSentinel()
+ {
+ return 0;
+ }
+
+ static uintptr_t substringSentinel()
+ {
+ return 1;
+ }
+
+ bool isSubstring() const
+ {
+ return u[0].number == substringSentinel();
+ }
+
+ void setIsSubstring(bool isSubstring)
+ {
+ u[0].number = isSubstring ? substringSentinel() : notSubstringSentinel();
+ }
+
+ mutable union {
+ uintptr_t number;
+ WriteBarrierBase<JSString> string;
+ } u[s_maxInternalRopeLength];
};
-JSString* asString(JSValue);
+class JSString::SafeView {
+public:
+ SafeView();
+ explicit SafeView(ExecState&, const JSString&);
+ operator StringView() const;
+ StringView get() const;
+
+private:
+ ExecState* m_state { nullptr };
+
+ // The following pointer is marked "volatile" to make the compiler leave it on the stack
+ // or in a register as long as this object is alive, even after the last use of the pointer.
+ // That's needed to prevent garbage collecting the string and possibly deleting the block
+ // with the characters in it, and then using the StringView after that.
+ const JSString* volatile m_string { nullptr };
+};
+
+JS_EXPORT_PRIVATE JSString* jsStringWithCacheSlowCase(VM&, StringImpl&);
+
+inline const StringImpl* JSString::tryGetValueImpl() const
+{
+ return m_value.impl();
+}
inline JSString* asString(JSValue value)
{
ALWAYS_INLINE JSString* jsSingleCharacterString(VM* vm, UChar c)
{
if (c <= maxSingleCharacterString)
- return vm->smallStrings.singleCharacterString(vm, c);
+ return vm->smallStrings.singleCharacterString(c);
return JSString::create(*vm, String(&c, 1).impl());
}
-ALWAYS_INLINE JSString* jsSingleCharacterSubstring(ExecState* exec, const String& s, unsigned offset)
+inline JSString* jsNontrivialString(VM* vm, const String& s)
{
- VM* vm = &exec->vm();
- ASSERT(offset < static_cast<unsigned>(s.length()));
- UChar c = s.characterAt(offset);
- if (c <= maxSingleCharacterString)
- return vm->smallStrings.singleCharacterString(vm, c);
- return JSString::create(*vm, StringImpl::create(s.impl(), offset, 1));
+ ASSERT(s.length() > 1);
+ return JSString::create(*vm, s.impl());
}
-inline JSString* jsNontrivialString(VM* vm, const String& s)
+inline JSString* jsNontrivialString(VM* vm, String&& s)
{
ASSERT(s.length() > 1);
- return JSString::create(*vm, s.impl());
+ return JSString::create(*vm, s.releaseImpl());
+}
+
+ALWAYS_INLINE Identifier JSString::toIdentifier(ExecState* exec) const
+{
+ return Identifier::fromString(exec, toAtomicString(exec));
+}
+
+ALWAYS_INLINE AtomicString JSString::toAtomicString(ExecState* exec) const
+{
+ if (isRope())
+ static_cast<const JSRopeString*>(this)->resolveRopeToAtomicString(exec);
+ return AtomicString(m_value);
+}
+
+ALWAYS_INLINE RefPtr<AtomicStringImpl> JSString::toExistingAtomicString(ExecState* exec) const
+{
+ if (isRope())
+ return static_cast<const JSRopeString*>(this)->resolveRopeToExistingAtomicString(exec);
+ if (m_value.impl()->isAtomic())
+ return static_cast<AtomicStringImpl*>(m_value.impl());
+ return AtomicStringImpl::lookUp(m_value.impl());
}
inline const String& JSString::value(ExecState* exec) const
inline JSString* JSString::getIndex(ExecState* exec, unsigned i)
{
ASSERT(canGetIndex(i));
- if (isRope())
- return static_cast<JSRopeString*>(this)->getIndexSlowCase(exec, i);
- ASSERT(i < m_value.length());
- return jsSingleCharacterSubstring(exec, m_value, i);
+ return jsSingleCharacterString(exec, unsafeView(*exec)[i]);
}
inline JSString* jsString(VM* vm, const String& s)
if (size == 1) {
UChar c = s.characterAt(0);
if (c <= maxSingleCharacterString)
- return vm->smallStrings.singleCharacterString(vm, c);
+ return vm->smallStrings.singleCharacterString(c);
}
return JSString::create(*vm, s.impl());
}
ASSERT(offset <= static_cast<unsigned>(s->length()));
ASSERT(length <= static_cast<unsigned>(s->length()));
ASSERT(offset + length <= static_cast<unsigned>(s->length()));
- VM* vm = &exec->vm();
+ VM& vm = exec->vm();
if (!length)
- return vm->smallStrings.emptyString();
- return jsSubstring(vm, s->value(exec), offset, length);
+ return vm.smallStrings.emptyString();
+ if (!offset && length == s->length())
+ return s;
+ return JSRopeString::create(*exec, *s, offset, length);
}
inline JSString* jsSubstring8(VM* vm, const String& s, unsigned offset, unsigned length)
if (length == 1) {
UChar c = s.characterAt(offset);
if (c <= maxSingleCharacterString)
- return vm->smallStrings.singleCharacterString(vm, c);
+ return vm->smallStrings.singleCharacterString(c);
}
- return JSString::createHasOtherOwner(*vm, StringImpl::create8(s.impl(), offset, length));
+ return JSString::createHasOtherOwner(*vm, StringImpl::createSubstringSharingImpl8(s.impl(), offset, length));
}
inline JSString* jsSubstring(VM* vm, const String& s, unsigned offset, unsigned length)
if (length == 1) {
UChar c = s.characterAt(offset);
if (c <= maxSingleCharacterString)
- return vm->smallStrings.singleCharacterString(vm, c);
+ return vm->smallStrings.singleCharacterString(c);
}
- return JSString::createHasOtherOwner(*vm, StringImpl::create(s.impl(), offset, length));
+ return JSString::createHasOtherOwner(*vm, StringImpl::createSubstringSharingImpl(s.impl(), offset, length));
}
inline JSString* jsOwnedString(VM* vm, const String& s)
if (size == 1) {
UChar c = s.characterAt(0);
if (c <= maxSingleCharacterString)
- return vm->smallStrings.singleCharacterString(vm, c);
+ return vm->smallStrings.singleCharacterString(c);
}
return JSString::createHasOtherOwner(*vm, s.impl());
}
inline JSString* jsSubstring8(ExecState* exec, const String& s, unsigned offset, unsigned length) { return jsSubstring8(&exec->vm(), s, offset, length); }
inline JSString* jsSubstring(ExecState* exec, const String& s, unsigned offset, unsigned length) { return jsSubstring(&exec->vm(), s, offset, length); }
inline JSString* jsNontrivialString(ExecState* exec, const String& s) { return jsNontrivialString(&exec->vm(), s); }
+inline JSString* jsNontrivialString(ExecState* exec, String&& s) { return jsNontrivialString(&exec->vm(), WTF::move(s)); }
inline JSString* jsOwnedString(ExecState* exec, const String& s) { return jsOwnedString(&exec->vm(), s); }
+ALWAYS_INLINE JSString* jsStringWithCache(ExecState* exec, const String& s)
+{
+ VM& vm = exec->vm();
+ StringImpl* stringImpl = s.impl();
+ if (!stringImpl || !stringImpl->length())
+ return jsEmptyString(&vm);
+
+ if (stringImpl->length() == 1) {
+ UChar singleCharacter = (*stringImpl)[0u];
+ if (singleCharacter <= maxSingleCharacterString)
+ return vm.smallStrings.singleCharacterString(static_cast<unsigned char>(singleCharacter));
+ }
+
+ if (JSString* lastCachedString = vm.lastCachedString.get()) {
+ if (lastCachedString->tryGetValueImpl() == stringImpl)
+ return lastCachedString;
+ }
+
+ return jsStringWithCacheSlowCase(vm, *stringImpl);
+}
+
+ALWAYS_INLINE JSString* jsStringWithCache(ExecState* exec, const AtomicString& s)
+{
+ return jsStringWithCache(exec, s.string());
+}
+
ALWAYS_INLINE bool JSString::getStringPropertySlot(ExecState* exec, PropertyName propertyName, PropertySlot& slot)
{
if (propertyName == exec->propertyNames().length) {
- slot.setValue(jsNumber(m_length));
+ slot.setValue(this, DontEnum | DontDelete | ReadOnly, jsNumber(m_length));
return true;
}
- unsigned i = propertyName.asIndex();
- if (i < m_length) {
- ASSERT(i != PropertyName::NotAnIndex); // No need for an explicit check, the above test would always fail!
- slot.setValue(getIndex(exec, i));
+ Optional<uint32_t> index = parseIndex(propertyName);
+ if (index && index.value() < m_length) {
+ slot.setValue(this, DontDelete | ReadOnly, getIndex(exec, index.value()));
return true;
}
return false;
}
-
+
ALWAYS_INLINE bool JSString::getStringPropertySlot(ExecState* exec, unsigned propertyName, PropertySlot& slot)
{
if (propertyName < m_length) {
- slot.setValue(getIndex(exec, propertyName));
+ slot.setValue(this, DontDelete | ReadOnly, getIndex(exec, propertyName));
return true;
}
return false;
}
-inline bool isJSString(JSValue v) { return v.isCell() && v.asCell()->classInfo() == &JSString::s_info; }
+inline bool isJSString(JSValue v)
+{
+ return v.isCell() && v.asCell()->type() == StringType;
+}
+
+ALWAYS_INLINE StringView JSRopeString::unsafeView(ExecState& state) const
+{
+ if (isSubstring()) {
+ if (is8Bit())
+ return StringView(substringBase()->m_value.characters8() + substringOffset(), m_length);
+ return StringView(substringBase()->m_value.characters16() + substringOffset(), m_length);
+ }
+ resolveRope(&state);
+ return m_value;
+}
+
+ALWAYS_INLINE StringViewWithUnderlyingString JSRopeString::viewWithUnderlyingString(ExecState& state) const
+{
+ if (isSubstring()) {
+ auto& base = substringBase()->m_value;
+ if (is8Bit())
+ return { { base.characters8() + substringOffset(), m_length }, base };
+ return { { base.characters16() + substringOffset(), m_length }, base };
+ }
+ resolveRope(&state);
+ return { m_value, m_value };
+}
+
+ALWAYS_INLINE StringView JSString::unsafeView(ExecState& state) const
+{
+ if (isRope())
+ return static_cast<const JSRopeString*>(this)->unsafeView(state);
+ return m_value;
+}
+
+ALWAYS_INLINE StringViewWithUnderlyingString JSString::viewWithUnderlyingString(ExecState& state) const
+{
+ if (isRope())
+ return static_cast<const JSRopeString&>(*this).viewWithUnderlyingString(state);
+ return { m_value, m_value };
+}
+
+inline bool JSString::isSubstring() const
+{
+ return isRope() && static_cast<const JSRopeString*>(this)->isSubstring();
+}
+
+inline JSString::SafeView::SafeView()
+{
+}
+
+inline JSString::SafeView::SafeView(ExecState& state, const JSString& string)
+ : m_state(&state)
+ , m_string(&string)
+{
+}
+
+inline JSString::SafeView::operator StringView() const
+{
+ return m_string->unsafeView(*m_state);
+}
+
+inline StringView JSString::SafeView::get() const
+{
+ return *this;
+}
+
+ALWAYS_INLINE JSString::SafeView JSString::view(ExecState* exec) const
+{
+ return SafeView(*exec, *this);
+}
// --- JSValue inlines ----------------------------
-
+
inline bool JSValue::toBoolean(ExecState* exec) const
{
if (isInt32())
return toWTFStringSlowCase(exec);
}
-ALWAYS_INLINE String inlineJSValueNotStringtoString(const JSValue& value, ExecState* exec)
-{
- VM& vm = exec->vm();
- if (value.isInt32())
- return vm.numericStrings.add(value.asInt32());
- if (value.isDouble())
- return vm.numericStrings.add(value.asDouble());
- if (value.isTrue())
- return vm.propertyNames->trueKeyword.string();
- if (value.isFalse())
- return vm.propertyNames->falseKeyword.string();
- if (value.isNull())
- return vm.propertyNames->nullKeyword.string();
- if (value.isUndefined())
- return vm.propertyNames->undefinedKeyword.string();
- return value.toString(exec)->value(exec);
-}
-
-ALWAYS_INLINE String JSValue::toWTFStringInline(ExecState* exec) const
-{
- if (isString())
- return static_cast<JSString*>(asCell())->value(exec);
-
- return inlineJSValueNotStringtoString(*this, exec);
-}
-
} // namespace JSC
#endif // JSString_h
projects / apple / javascriptcore.git / blobdiff