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187 lines (157 loc) · 7.06 KB
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/*
* Copyright (C) 2006, 2007, 2013 Apple Inc. All rights reserved.
*
* 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 "JSBase.h"
#include "JSBasePrivate.h"
#include "APICast.h"
#include "CallFrame.h"
#include "Completion.h"
#include "InitializeThreading.h"
#include "JSGlobalObject.h"
#include "JSLock.h"
#include "JSObject.h"
#include "OpaqueJSString.h"
#include "JSCInlines.h"
#include "SourceCode.h"
#include <wtf/text/StringHash.h>
#if ENABLE(REMOTE_INSPECTOR)
#include "JSGlobalObjectInspectorController.h"
#endif
using namespace JSC;
JSValueRef JSEvaluateScript(JSContextRef ctx, JSStringRef script, JSObjectRef thisObject, JSStringRef sourceURL, int startingLineNumber, JSValueRef* exception)
{
if (!ctx) {
ASSERT_NOT_REACHED();
return 0;
}
ExecState* exec = toJS(ctx);
JSLockHolder locker(exec);
JSObject* jsThisObject = toJS(thisObject);
startingLineNumber = std::max(1, startingLineNumber);
// evaluate sets "this" to the global object if it is NULL
JSGlobalObject* globalObject = exec->vmEntryGlobalObject();
SourceCode source = makeSource(script->string(), sourceURL->string(), TextPosition(OrdinalNumber::fromOneBasedInt(startingLineNumber), OrdinalNumber::first()));
JSValue evaluationException;
JSValue returnValue = evaluate(globalObject->globalExec(), source, jsThisObject, &evaluationException);
if (evaluationException) {
if (exception)
*exception = toRef(exec, evaluationException);
#if ENABLE(REMOTE_INSPECTOR)
// FIXME: If we have a debugger attached we could learn about ParseError exceptions through
// ScriptDebugServer::sourceParsed and this path could produce a duplicate warning. The
// Debugger path is currently ignored by inspector.
// NOTE: If we don't have a debugger, this SourceCode will be forever lost to the inspector.
// We could stash it in the inspector in case an inspector is ever opened.
globalObject->inspectorController().reportAPIException(exec, evaluationException);
#endif
return 0;
}
if (returnValue)
return toRef(exec, returnValue);
// happens, for example, when the only statement is an empty (';') statement
return toRef(exec, jsUndefined());
}
bool JSCheckScriptSyntax(JSContextRef ctx, JSStringRef script, JSStringRef sourceURL, int startingLineNumber, JSValueRef* exception)
{
if (!ctx) {
ASSERT_NOT_REACHED();
return false;
}
ExecState* exec = toJS(ctx);
JSLockHolder locker(exec);
startingLineNumber = std::max(1, startingLineNumber);
SourceCode source = makeSource(script->string(), sourceURL->string(), TextPosition(OrdinalNumber::fromOneBasedInt(startingLineNumber), OrdinalNumber::first()));
JSValue syntaxException;
bool isValidSyntax = checkSyntax(exec->vmEntryGlobalObject()->globalExec(), source, &syntaxException);
if (!isValidSyntax) {
if (exception)
*exception = toRef(exec, syntaxException);
#if ENABLE(REMOTE_INSPECTOR)
exec->vmEntryGlobalObject()->inspectorController().reportAPIException(exec, syntaxException);
#endif
return false;
}
return true;
}
void JSGarbageCollect(JSContextRef ctx)
{
// We used to recommend passing NULL as an argument here, which caused the only heap to be collected.
// As there is no longer a shared heap, the previously recommended usage became a no-op (but the GC
// will happen when the context group is destroyed).
// Because the function argument was originally ignored, some clients may pass their released context here,
// in which case there is a risk of crashing if another thread performs GC on the same heap in between.
if (!ctx)
return;
ExecState* exec = toJS(ctx);
JSLockHolder locker(exec);
exec->vm().heap.reportAbandonedObjectGraph();
}
void JSReportExtraMemoryCost(JSContextRef ctx, size_t size)
{
if (!ctx) {
ASSERT_NOT_REACHED();
return;
}
ExecState* exec = toJS(ctx);
JSLockHolder locker(exec);
exec->vm().heap.reportExtraMemoryCost(size);
}
extern "C" JS_EXPORT void JSSynchronousGarbageCollectForDebugging(JSContextRef);
extern "C" JS_EXPORT void JSSynchronousEdenCollectForDebugging(JSContextRef);
void JSSynchronousGarbageCollectForDebugging(JSContextRef ctx)
{
if (!ctx)
return;
ExecState* exec = toJS(ctx);
JSLockHolder locker(exec);
exec->vm().heap.collectAllGarbage();
}
void JSSynchronousEdenCollectForDebugging(JSContextRef ctx)
{
if (!ctx)
return;
ExecState* exec = toJS(ctx);
JSLockHolder locker(exec);
exec->vm().heap.collect(EdenCollection);
}
void JSDisableGCTimer(void)
{
GCActivityCallback::s_shouldCreateGCTimer = false;
}
#if PLATFORM(IOS)
// FIXME: Expose symbols to tell dyld where to find JavaScriptCore on older versions of
// iOS (< 7.0). We should remove these symbols once we no longer need to support such
// versions of iOS. See <rdar://problem/13696872> for more details.
JS_EXPORT extern const char iosInstallName43 __asm("$ld$install_name$os4.3$/System/Library/PrivateFrameworks/JavaScriptCore.framework/JavaScriptCore");
JS_EXPORT extern const char iosInstallName50 __asm("$ld$install_name$os5.0$/System/Library/PrivateFrameworks/JavaScriptCore.framework/JavaScriptCore");
JS_EXPORT extern const char iosInstallName51 __asm("$ld$install_name$os5.1$/System/Library/PrivateFrameworks/JavaScriptCore.framework/JavaScriptCore");
JS_EXPORT extern const char iosInstallName60 __asm("$ld$install_name$os6.0$/System/Library/PrivateFrameworks/JavaScriptCore.framework/JavaScriptCore");
JS_EXPORT extern const char iosInstallName61 __asm("$ld$install_name$os6.1$/System/Library/PrivateFrameworks/JavaScriptCore.framework/JavaScriptCore");
const char iosInstallName43 = 0;
const char iosInstallName50 = 0;
const char iosInstallName51 = 0;
const char iosInstallName60 = 0;
const char iosInstallName61 = 0;
#endif