WebKit/Source/JavaScriptCore/API/JSValueRef.cpp at main · WebKit/WebKit · GitHub

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* Redistribution and use in source and binary forms, with or without

* modification, are permitted provided that the following conditions

* are met:

* 1. Redistributions of source code must retain the above copyright

* notice, this list of conditions and the following disclaimer.

* 2. Redistributions in binary form must reproduce the above copyright

* notice, this list of conditions and the following disclaimer in the

* documentation and/or other materials provided with the distribution.

* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY

* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR

* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,

* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,

* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR

* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY

* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE

* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

#include "config.h"

#include "JSValueRef.h"

#include "APICast.h"

#include "APIUtils.h"

#include "DateInstance.h"

#include "JSAPIWrapperObject.h"

#include "JSBigIntInlines.h"

#include "JSCInlines.h"

#include "JSCallbackObject.h"

#include "JSONObject.h"

#include "LiteralParser.h"

#include "Protect.h"

#include <wtf/Assertions.h>

#include <wtf/text/WTFString.h>

#if PLATFORM(MAC)

#include <mach-o/dyld.h>

#endif

#if ENABLE(REMOTE_INSPECTOR)

#include "JSGlobalObjectInspectorController.h"

#endif

using namespace JSC;

::JSType JSValueGetType(JSContextRef ctx, JSValueRef value)

{

if (!ctx) {

ASSERT_NOT_REACHED();

return kJSTypeUndefined;

}

#if !CPU(ADDRESS64)

JSGlobalObject* globalObject = toJS(ctx);

JSLockHolder locker(globalObject);

JSValue jsValue = toJS(globalObject, value);

#else

JSValue jsValue = toJS(value);

#endif

if (jsValue.isUndefined())

return kJSTypeUndefined;

if (!jsValue || jsValue.isNull())

return kJSTypeNull;

if (jsValue.isBoolean())

return kJSTypeBoolean;

if (jsValue.isNumber())

return kJSTypeNumber;

if (jsValue.isString())

return kJSTypeString;

if (jsValue.isSymbol())

return kJSTypeSymbol;

if (jsValue.isBigInt())

return kJSTypeBigInt;

ASSERT(jsValue.isObject());

return kJSTypeObject;

}

bool JSValueIsUndefined(JSContextRef ctx, JSValueRef value)

{

if (!ctx) {

ASSERT_NOT_REACHED();

return false;

}

#if !CPU(ADDRESS64)

JSGlobalObject* globalObject = toJS(ctx);

JSLockHolder locker(globalObject);

return toJS(globalObject, value).isUndefined();

#else

return toJS(value).isUndefined();

#endif

}

bool JSValueIsNull(JSContextRef ctx, JSValueRef value)

{

if (!ctx) {

ASSERT_NOT_REACHED();

return false;

}

#if !CPU(ADDRESS64)

JSGlobalObject* globalObject = toJS(ctx);

JSLockHolder locker(globalObject);

return toJS(globalObject, value).isNull();

#else

return !value || toJS(value).isNull();

#endif

}

bool JSValueIsBoolean(JSContextRef ctx, JSValueRef value)

{

if (!ctx) {

ASSERT_NOT_REACHED();

return false;

}

#if !CPU(ADDRESS64)

JSGlobalObject* globalObject = toJS(ctx);

JSLockHolder locker(globalObject);

return toJS(globalObject, value).isBoolean();

#else

return toJS(value).isBoolean();

#endif

}

bool JSValueIsNumber(JSContextRef ctx, JSValueRef value)

{

if (!ctx) {

ASSERT_NOT_REACHED();

return false;

}

#if !CPU(ADDRESS64)

JSGlobalObject* globalObject = toJS(ctx);

JSLockHolder locker(globalObject);

return toJS(globalObject, value).isNumber();

#else

return toJS(value).isNumber();

#endif

}

bool JSValueIsString(JSContextRef ctx, JSValueRef value)

{

if (!ctx) {

ASSERT_NOT_REACHED();

return false;

}

#if !CPU(ADDRESS64)

JSGlobalObject* globalObject = toJS(ctx);

JSLockHolder locker(globalObject);

return toJS(globalObject, value).isString();

#else

return value && toJS(value).isString();

#endif

}

bool JSValueIsObject(JSContextRef ctx, JSValueRef value)

{

if (!ctx) {

ASSERT_NOT_REACHED();

return false;

}

#if !CPU(ADDRESS64)

JSGlobalObject* globalObject = toJS(ctx);

JSLockHolder locker(globalObject);

return toJS(globalObject, value).isObject();

#else

return value && toJS(value).isObject();

#endif

}

bool JSValueIsSymbol(JSContextRef ctx, JSValueRef value)

{

if (!ctx) {

ASSERT_NOT_REACHED();

return false;

}

#if !CPU(ADDRESS64)

JSGlobalObject* globalObject = toJS(ctx);

JSLockHolder locker(globalObject);

return toJS(globalObject, value).isSymbol();

#else

return value && toJS(value).isSymbol();

#endif

}

bool JSValueIsBigInt(JSContextRef ctx, JSValueRef value)

{

if (!ctx) {

ASSERT_NOT_REACHED();

return false;

}

#if !CPU(ADDRESS64)

JSGlobalObject* globalObject = toJS(ctx);

JSLockHolder locker(globalObject);

return toJS(globalObject, value).isBigInt();

#else

return value && toJS(value).isBigInt();

#endif

}

bool JSValueIsArray(JSContextRef ctx, JSValueRef value)

{

if (!ctx) {

ASSERT_NOT_REACHED();

return false;

}

JSGlobalObject* globalObject = toJS(ctx);

JSLockHolder locker(globalObject);

return toJS(globalObject, value).inherits<JSArray>();

}

bool JSValueIsDate(JSContextRef ctx, JSValueRef value)

{

if (!ctx) {

ASSERT_NOT_REACHED();

return false;

}

JSGlobalObject* globalObject = toJS(ctx);

JSLockHolder locker(globalObject);

return toJS(globalObject, value).inherits<DateInstance>();

}

bool JSValueIsObjectOfClass(JSContextRef ctx, JSValueRef value, JSClassRef jsClass)

{

if (!ctx || !jsClass) {

ASSERT_NOT_REACHED();

return false;

}

JSGlobalObject* globalObject = toJS(ctx);

JSLockHolder locker(globalObject);

JSValue jsValue = toJS(globalObject, value);

if (JSObject* o = jsValue.getObject()) {

if (o->inherits<JSGlobalProxy>())

o = uncheckedDowncast<JSGlobalProxy>(o)->target();

if (o->inherits<JSCallbackObject<JSGlobalObject>>())

return uncheckedDowncast<JSCallbackObject<JSGlobalObject>>(o)->inherits(jsClass);

if (o->inherits<JSCallbackObject<JSNonFinalObject>>())

return uncheckedDowncast<JSCallbackObject<JSNonFinalObject>>(o)->inherits(jsClass);

#if JSC_OBJC_API_ENABLED

if (o->inherits<JSCallbackObject<JSAPIWrapperObject>>())

return uncheckedDowncast<JSCallbackObject<JSAPIWrapperObject>>(o)->inherits(jsClass);

#endif

}

return false;

}

bool JSValueIsEqual(JSContextRef ctx, JSValueRef a, JSValueRef b, JSValueRef* exception)

{

if (!ctx) {

ASSERT_NOT_REACHED();

return false;

}

JSGlobalObject* globalObject = toJS(ctx);

VM& vm = globalObject->vm();

JSLockHolder locker(vm);

auto scope = DECLARE_TOP_EXCEPTION_SCOPE(vm);

JSValue jsA = toJS(globalObject, a);

JSValue jsB = toJS(globalObject, b);

bool result = JSValue::equal(globalObject, jsA, jsB); // false if an exception is thrown

if (handleExceptionIfNeeded(scope, ctx, exception) == ExceptionStatus::DidThrow)

return false;

return result;

}

bool JSValueIsStrictEqual(JSContextRef ctx, JSValueRef a, JSValueRef b)

{

if (!ctx) {

ASSERT_NOT_REACHED();

return false;

}

JSGlobalObject* globalObject = toJS(ctx);

JSLockHolder locker(globalObject);

JSValue jsA = toJS(globalObject, a);

JSValue jsB = toJS(globalObject, b);

return JSValue::strictEqual(globalObject, jsA, jsB);

}

bool JSValueIsInstanceOfConstructor(JSContextRef ctx, JSValueRef value, JSObjectRef constructor, JSValueRef* exception)

{

if (!ctx) {

ASSERT_NOT_REACHED();

return false;

}

JSGlobalObject* globalObject = toJS(ctx);

VM& vm = globalObject->vm();

JSLockHolder locker(vm);

auto scope = DECLARE_TOP_EXCEPTION_SCOPE(vm);

JSValue jsValue = toJS(globalObject, value);

JSObject* jsConstructor = toJS(constructor);

if (!jsConstructor->structure()->typeInfo().implementsHasInstance())

return false;

bool result = jsConstructor->hasInstance(globalObject, jsValue); // false if an exception is thrown

if (handleExceptionIfNeeded(scope, ctx, exception) == ExceptionStatus::DidThrow)

return false;

return result;

}

JSValueRef JSValueMakeUndefined(JSContextRef ctx)

{

if (!ctx) {

ASSERT_NOT_REACHED();

return nullptr;

}

#if !CPU(ADDRESS64)

JSGlobalObject* globalObject = toJS(ctx);

JSLockHolder locker(globalObject);

return toRef(globalObject, jsUndefined());

#else

return toRefWithoutGlobalObject(jsUndefined());

#endif

}

JSValueRef JSValueMakeNull(JSContextRef ctx)

{

if (!ctx) {

ASSERT_NOT_REACHED();

return nullptr;

}

#if !CPU(ADDRESS64)

JSGlobalObject* globalObject = toJS(ctx);

JSLockHolder locker(globalObject);

return toRef(globalObject, jsNull());

#else

return toRefWithoutGlobalObject(jsNull());

#endif

}

JSValueRef JSValueMakeBoolean(JSContextRef ctx, bool value)

{

if (!ctx) {

ASSERT_NOT_REACHED();

return nullptr;

}

#if !CPU(ADDRESS64)

JSGlobalObject* globalObject = toJS(ctx);

JSLockHolder locker(globalObject);

return toRef(globalObject, jsBoolean(value));

#else

return toRefWithoutGlobalObject(jsBoolean(value));

#endif

}

JSValueRef JSValueMakeNumber(JSContextRef ctx, double value)

{

if (!ctx) {

ASSERT_NOT_REACHED();

return nullptr;

}

#if !CPU(ADDRESS64)

JSGlobalObject* globalObject = toJS(ctx);

JSLockHolder locker(globalObject);

return toRef(globalObject, jsNumber(purifyNaN(value)));

#else

return toRefWithoutGlobalObject(jsNumber(purifyNaN(value)));

#endif

}

JSValueRef JSValueMakeSymbol(JSContextRef ctx, JSStringRef description)

{

if (!ctx) {

ASSERT_NOT_REACHED();

return nullptr;

}

JSGlobalObject* globalObject = toJS(ctx);

VM& vm = globalObject->vm();

JSLockHolder locker(globalObject);

if (!description)

return toRef(globalObject, Symbol::create(vm));

return toRef(globalObject, Symbol::createWithDescription(vm, description->string()));

}

JSValueRef JSBigIntCreateWithDouble(JSContextRef ctx, double value, JSValueRef* exception)

{

if (!ctx) {

ASSERT_NOT_REACHED();

return nullptr;

}

JSGlobalObject* globalObject = toJS(ctx);

VM& vm = globalObject->vm();

JSLockHolder locker(vm);

auto scope = DECLARE_TOP_EXCEPTION_SCOPE(vm);

if (!isInteger(value)) {

setException(ctx, exception, createRangeError(globalObject, "Not an integer"_s));

return nullptr;

}

JSValue result = JSBigInt::makeHeapBigIntOrBigInt32(globalObject, value);

if (handleExceptionIfNeeded(scope, ctx, exception) == ExceptionStatus::DidThrow)

return nullptr;

return toRef(globalObject, result);

}

JSValueRef JSBigIntCreateWithUInt64(JSContextRef ctx, uint64_t integer, JSValueRef* exception)

{

if (!ctx) {

ASSERT_NOT_REACHED();

return nullptr;

}

JSGlobalObject* globalObject = toJS(ctx);

VM& vm = globalObject->vm();

JSLockHolder locker(vm);

auto scope = DECLARE_TOP_EXCEPTION_SCOPE(vm);

JSValue result = JSBigInt::makeHeapBigIntOrBigInt32(globalObject, integer);

if (handleExceptionIfNeeded(scope, ctx, exception) == ExceptionStatus::DidThrow)

return nullptr;

return toRef(globalObject, result);

}

JSValueRef JSBigIntCreateWithInt64(JSContextRef ctx, int64_t integer, JSValueRef* exception)

{

if (!ctx) {

ASSERT_NOT_REACHED();

return nullptr;

}

JSGlobalObject* globalObject = toJS(ctx);

VM& vm = globalObject->vm();

JSLockHolder locker(vm);

auto scope = DECLARE_TOP_EXCEPTION_SCOPE(vm);

JSValue result = JSBigInt::makeHeapBigIntOrBigInt32(globalObject, integer);

if (handleExceptionIfNeeded(scope, ctx, exception) == ExceptionStatus::DidThrow)

return nullptr;

return toRef(globalObject, result);

}

JSValueRef JSBigIntCreateWithString(JSContextRef ctx, JSStringRef string, JSValueRef* exception)

{

if (!ctx) {

ASSERT_NOT_REACHED();

return nullptr;

}

JSGlobalObject* globalObject = toJS(ctx);

VM& vm = globalObject->vm();

JSLockHolder locker(vm);

auto scope = DECLARE_TOP_EXCEPTION_SCOPE(vm);

JSValue result = JSBigInt::parseInt(globalObject, string->string(), JSBigInt::ErrorParseMode::ThrowExceptions);

if (handleExceptionIfNeeded(scope, ctx, exception) == ExceptionStatus::DidThrow)

return nullptr;

return toRef(globalObject, result);

}

uint64_t JSValueToUInt64(JSContextRef ctx, JSValueRef value, JSValueRef* exception)

{

if (!ctx) {

ASSERT_NOT_REACHED();

return 0;

}

JSGlobalObject* globalObject = toJS(ctx);

JSLockHolder locker(globalObject);

auto scope = DECLARE_TOP_EXCEPTION_SCOPE(globalObject->vm());

JSValue numeric = toJS(globalObject, value).toNumeric(globalObject);

if (handleExceptionIfNeeded(scope, ctx, exception) == ExceptionStatus::DidThrow)

return 0;

if (numeric.isBigInt())

return JSBigInt::toBigUInt64(numeric);

ASSERT(numeric.isNumber());

return JSC::toUInt64(numeric.asNumber());

}

int64_t JSValueToInt64(JSContextRef ctx, JSValueRef value, JSValueRef* exception)

{

if (!ctx) {

ASSERT_NOT_REACHED();

return 0;

}

JSGlobalObject* globalObject = toJS(ctx);

JSLockHolder locker(globalObject);

auto scope = DECLARE_TOP_EXCEPTION_SCOPE(globalObject->vm());

JSValue numeric = toJS(globalObject, value).toNumeric(globalObject);

if (handleExceptionIfNeeded(scope, ctx, exception) == ExceptionStatus::DidThrow)

return 0;

if (numeric.isBigInt())

return JSBigInt::toBigInt64(numeric);

ASSERT(numeric.isNumber());

return JSC::toInt64(numeric.asNumber());

}

uint32_t JSValueToUInt32(JSContextRef ctx, JSValueRef value, JSValueRef* exception)

{

if (!ctx) {

ASSERT_NOT_REACHED();

return 0;

}

JSGlobalObject* globalObject = toJS(ctx);

JSLockHolder locker(globalObject);

auto scope = DECLARE_TOP_EXCEPTION_SCOPE(globalObject->vm());

JSValue numeric = toJS(globalObject, value).toNumeric(globalObject);

if (handleExceptionIfNeeded(scope, ctx, exception) == ExceptionStatus::DidThrow)

return 0;

if (numeric.isBigInt())

return static_cast<uint32_t>(JSBigInt::toBigUInt64(numeric));

ASSERT(numeric.isNumber());

return JSC::toUInt32(numeric.asNumber());

}

int32_t JSValueToInt32(JSContextRef ctx, JSValueRef value, JSValueRef* exception)

{

if (!ctx) {

ASSERT_NOT_REACHED();

return 0;

}

JSGlobalObject* globalObject = toJS(ctx);

JSLockHolder locker(globalObject);

auto scope = DECLARE_TOP_EXCEPTION_SCOPE(globalObject->vm());

JSValue numeric = toJS(globalObject, value).toNumeric(globalObject);

if (handleExceptionIfNeeded(scope, ctx, exception) == ExceptionStatus::DidThrow)

return 0;

if (numeric.isBigInt())

return static_cast<int32_t>(JSBigInt::toBigInt64(numeric));

ASSERT(numeric.isNumber());

return JSC::toInt32(numeric.asNumber());

}

ALWAYS_INLINE JSRelationCondition toJSRelationCondition(JSC::JSBigInt::ComparisonResult);

JSRelationCondition toJSRelationCondition(JSC::JSBigInt::ComparisonResult result)

{

switch (result) {

case JSC::JSBigInt::ComparisonResult::Equal:

return JSRelationCondition::kJSRelationConditionEqual;

case JSC::JSBigInt::ComparisonResult::Undefined:

return JSRelationCondition::kJSRelationConditionUndefined;

case JSC::JSBigInt::ComparisonResult::GreaterThan:

return JSRelationCondition::kJSRelationConditionGreaterThan;

case JSC::JSBigInt::ComparisonResult::LessThan:

return JSRelationCondition::kJSRelationConditionLessThan;

default:

ASSERT_NOT_REACHED();

return JSRelationCondition::kJSRelationConditionUndefined;

}

JSRelationCondition JSValueCompareUInt64(JSContextRef ctx, JSValueRef left, uint64_t right, JSValueRef* exception)

{

if (!ctx) {

ASSERT_NOT_REACHED();

return kJSRelationConditionUndefined;

}

JSGlobalObject* globalObject = toJS(ctx);

JSLockHolder locker(globalObject);

auto scope = DECLARE_TOP_EXCEPTION_SCOPE(globalObject->vm());

JSValue leftNumeric = toJS(globalObject, left).toNumeric(globalObject);

if (handleExceptionIfNeeded(scope, ctx, exception) == ExceptionStatus::DidThrow)

return kJSRelationConditionUndefined;

if (leftNumeric.isBigInt())

return toJSRelationCondition(JSBigInt::compare(leftNumeric, right));

ASSERT(leftNumeric.isNumber());

return toJSRelationCondition(JSBigInt::compareToDouble(leftNumeric.asNumber(), right));

}

JSRelationCondition JSValueCompareInt64(JSContextRef ctx, JSValueRef left, int64_t right, JSValueRef* exception)

{

if (!ctx) {

ASSERT_NOT_REACHED();

return kJSRelationConditionUndefined;

}

JSGlobalObject* globalObject = toJS(ctx);

JSLockHolder locker(globalObject);

auto scope = DECLARE_TOP_EXCEPTION_SCOPE(globalObject->vm());

JSValue leftNumeric = toJS(globalObject, left).toNumeric(globalObject);

if (handleExceptionIfNeeded(scope, ctx, exception) == ExceptionStatus::DidThrow)

return kJSRelationConditionUndefined;

if (leftNumeric.isBigInt())

return toJSRelationCondition(JSBigInt::compare(leftNumeric, right));

ASSERT(leftNumeric.isNumber());

return toJSRelationCondition(JSBigInt::compareToDouble(leftNumeric.asNumber(), right));

}

JSRelationCondition JSValueCompareDouble(JSContextRef ctx, JSValueRef left, double right, JSValueRef* exception)

{

if (!ctx) {

ASSERT_NOT_REACHED();

return kJSRelationConditionUndefined;

}

JSGlobalObject* globalObject = toJS(ctx);

JSLockHolder locker(globalObject);

auto scope = DECLARE_TOP_EXCEPTION_SCOPE(globalObject->vm());

JSValue leftNumeric = toJS(globalObject, left).toNumeric(globalObject);

if (handleExceptionIfNeeded(scope, ctx, exception) == ExceptionStatus::DidThrow)

return kJSRelationConditionUndefined;

if (leftNumeric.isBigInt())

return toJSRelationCondition(JSBigInt::compareToDouble(leftNumeric, right));

ASSERT(leftNumeric.isNumber());

double leftDouble = leftNumeric.asNumber();

if (std::isnan(leftDouble) || std::isnan(right))

return kJSRelationConditionUndefined;

if (leftDouble == right)

return kJSRelationConditionEqual;

if (leftDouble < right)

return kJSRelationConditionLessThan;

return kJSRelationConditionGreaterThan;

}

JSRelationCondition JSValueCompare(JSContextRef ctx, JSValueRef left, JSValueRef right, JSValueRef* exception)

{

if (!ctx) {

ASSERT_NOT_REACHED();

return kJSRelationConditionUndefined;

}

JSGlobalObject* globalObject = toJS(ctx);

JSLockHolder locker(globalObject);

auto scope = DECLARE_TOP_EXCEPTION_SCOPE(globalObject->vm());

JSValue leftValue = toJS(globalObject, left);

JSValue rightValue = toJS(globalObject, right);

bool isEqual = JSValue::equal(globalObject, leftValue, rightValue);

if (handleExceptionIfNeeded(scope, ctx, exception) == ExceptionStatus::DidThrow)

return kJSRelationConditionUndefined;

if (isEqual)

return kJSRelationConditionEqual;

bool isLessThan = jsLess<true>(globalObject, leftValue, rightValue);

if (handleExceptionIfNeeded(scope, ctx, exception) == ExceptionStatus::DidThrow)

return kJSRelationConditionUndefined;

bool isGreaterThan = jsLess<true>(globalObject, rightValue, leftValue);

if (handleExceptionIfNeeded(scope, ctx, exception) == ExceptionStatus::DidThrow)

return kJSRelationConditionUndefined;

ASSERT(!isLessThan || !isGreaterThan);

// This means either the left or right has a NaN result of toPrimitiveNumeric.

if (!isLessThan && !isGreaterThan)

return kJSRelationConditionUndefined;

if (isLessThan)

return kJSRelationConditionLessThan;

return kJSRelationConditionGreaterThan;

}

JSValueRef JSValueMakeString(JSContextRef ctx, JSStringRef string)

{

if (!ctx) {

ASSERT_NOT_REACHED();

return nullptr;

}

JSGlobalObject* globalObject = toJS(ctx);

VM& vm = globalObject->vm();

JSLockHolder locker(vm);

return toRef(globalObject, jsString(vm, string ? string->string() : String()));

}

JSValueRef JSValueMakeFromJSONString(JSContextRef ctx, JSStringRef string)

{

if (!ctx) {

ASSERT_NOT_REACHED();

return nullptr;

}

JSGlobalObject* globalObject = toJS(ctx);

JSLockHolder locker(globalObject);

String str = string->string();

if (str.is8Bit()) {

LiteralParser<Latin1Character, JSONReviverMode::Disabled> parser(globalObject, str.span8(), StrictJSON);

return toRef(globalObject, parser.tryLiteralParse());

}

LiteralParser<char16_t, JSONReviverMode::Disabled> parser(globalObject, str.span16(), StrictJSON);

return toRef(globalObject, parser.tryLiteralParse());

}

JSStringRef JSValueCreateJSONString(JSContextRef ctx, JSValueRef apiValue, unsigned indent, JSValueRef* exception)

{

if (!ctx) {

ASSERT_NOT_REACHED();

return nullptr;

}

JSGlobalObject* globalObject = toJS(ctx);

VM& vm = globalObject->vm();

JSLockHolder locker(vm);

auto scope = DECLARE_TOP_EXCEPTION_SCOPE(vm);

JSValue value = toJS(globalObject, apiValue);

String result = JSONStringify(globalObject, value, indent);

if (exception)

*exception = nullptr;

if (handleExceptionIfNeeded(scope, ctx, exception) == ExceptionStatus::DidThrow)

return nullptr;

return OpaqueJSString::tryCreate(result).leakRef();

}

bool JSValueToBoolean(JSContextRef ctx, JSValueRef value)

{

if (!ctx) {

ASSERT_NOT_REACHED();

return false;

}

JSGlobalObject* globalObject = toJS(ctx);

JSLockHolder locker(globalObject);

JSValue jsValue = toJS(globalObject, value);

return jsValue.toBoolean(globalObject);

}

double JSValueToNumber(JSContextRef ctx, JSValueRef value, JSValueRef* exception)

{

if (!ctx) {

ASSERT_NOT_REACHED();

return PNaN;

}

JSGlobalObject* globalObject = toJS(ctx);

VM& vm = globalObject->vm();

JSLockHolder locker(vm);

auto scope = DECLARE_TOP_EXCEPTION_SCOPE(vm);

JSValue numeric = toJS(globalObject, value).toNumeric(globalObject);

if (handleExceptionIfNeeded(scope, ctx, exception) == ExceptionStatus::DidThrow)

return PNaN;

if (numeric.isBigInt())

return JSBigInt::toNumber(numeric).asNumber();

ASSERT(numeric.isNumber());

return numeric.asNumber();

}

JSStringRef JSValueToStringCopy(JSContextRef ctx, JSValueRef value, JSValueRef* exception)

{

if (!ctx) {

ASSERT_NOT_REACHED();

return nullptr;

}

JSGlobalObject* globalObject = toJS(ctx);

VM& vm = globalObject->vm();

JSLockHolder locker(vm);

auto scope = DECLARE_TOP_EXCEPTION_SCOPE(vm);

JSValue jsValue = toJS(globalObject, value);

auto stringRef(OpaqueJSString::tryCreate(jsValue.toWTFString(globalObject)));

if (handleExceptionIfNeeded(scope, ctx, exception) == ExceptionStatus::DidThrow)

stringRef = nullptr;

return stringRef.leakRef();

}

JSObjectRef JSValueToObject(JSContextRef ctx, JSValueRef value, JSValueRef* exception)

{

if (!ctx) {

ASSERT_NOT_REACHED();

return nullptr;

}

JSGlobalObject* globalObject = toJS(ctx);

VM& vm = globalObject->vm();

JSLockHolder locker(vm);

auto scope = DECLARE_TOP_EXCEPTION_SCOPE(vm);

JSValue jsValue = toJS(globalObject, value);

JSObjectRef objectRef = toRef(jsValue.toObject(globalObject));

if (handleExceptionIfNeeded(scope, ctx, exception) == ExceptionStatus::DidThrow)

objectRef = nullptr;

return objectRef;

}

void JSValueProtect(JSContextRef ctx, JSValueRef value)

{

if (!ctx) {

ASSERT_NOT_REACHED();

return;

}

JSGlobalObject* globalObject = toJS(ctx);

JSLockHolder locker(globalObject);

JSValue jsValue = toJSForGC(globalObject, value);

gcProtect(jsValue);

}

void JSValueUnprotect(JSContextRef ctx, JSValueRef value)

{

JSGlobalObject* globalObject = toJS(ctx);

JSLockHolder locker(globalObject);

JSValue jsValue = toJSForGC(globalObject, value);

gcUnprotect(jsValue);

}

WebKit/Source/JavaScriptCore/API/JSValueRef.cpp at main · WebKit/WebKit · GitHub

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