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Copy pathJSScriptRef.cpp
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154 lines (129 loc) · 5.01 KB
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/*
* Copyright (C) 2012 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. AND ITS CONTRIBUTORS ``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 ITS 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 "APICast.h"
#include "Completion.h"
#include "JSBasePrivate.h"
#include "VM.h"
#include "JSScriptRefPrivate.h"
#include "OpaqueJSString.h"
#include "JSCInlines.h"
#include "Parser.h"
#include "SourceCode.h"
#include "SourceProvider.h"
using namespace JSC;
struct OpaqueJSScript : public SourceProvider {
public:
static WTF::PassRefPtr<OpaqueJSScript> create(VM* vm, const String& url, int startingLineNumber, const String& source)
{
return WTF::adoptRef(new OpaqueJSScript(vm, url, startingLineNumber, source));
}
virtual const String& source() const override
{
return m_source;
}
VM* vm() const { return m_vm; }
private:
OpaqueJSScript(VM* vm, const String& url, int startingLineNumber, const String& source)
: SourceProvider(url, TextPosition(OrdinalNumber::fromOneBasedInt(startingLineNumber), OrdinalNumber::first()))
, m_vm(vm)
, m_source(source)
{
}
virtual ~OpaqueJSScript() { }
VM* m_vm;
String m_source;
};
static bool parseScript(VM* vm, const SourceCode& source, ParserError& error)
{
return JSC::parse<JSC::ProgramNode>(vm, source, 0, Identifier(), JSParseNormal, JSParseProgramCode, error);
}
extern "C" {
JSScriptRef JSScriptCreateReferencingImmortalASCIIText(JSContextGroupRef contextGroup, JSStringRef url, int startingLineNumber, const char* source, size_t length, JSStringRef* errorMessage, int* errorLine)
{
VM* vm = toJS(contextGroup);
JSLockHolder locker(vm);
for (size_t i = 0; i < length; i++) {
if (!isASCII(source[i]))
return 0;
}
startingLineNumber = std::max(1, startingLineNumber);
RefPtr<OpaqueJSScript> result = OpaqueJSScript::create(vm, url->string(), startingLineNumber, String(StringImpl::createFromLiteral(source, length)));
ParserError error;
if (!parseScript(vm, SourceCode(result), error)) {
if (errorMessage)
*errorMessage = OpaqueJSString::create(error.m_message).leakRef();
if (errorLine)
*errorLine = error.m_line;
return 0;
}
return result.release().leakRef();
}
JSScriptRef JSScriptCreateFromString(JSContextGroupRef contextGroup, JSStringRef url, int startingLineNumber, JSStringRef source, JSStringRef* errorMessage, int* errorLine)
{
VM* vm = toJS(contextGroup);
JSLockHolder locker(vm);
startingLineNumber = std::max(1, startingLineNumber);
RefPtr<OpaqueJSScript> result = OpaqueJSScript::create(vm, url->string(), startingLineNumber, source->string());
ParserError error;
if (!parseScript(vm, SourceCode(result), error)) {
if (errorMessage)
*errorMessage = OpaqueJSString::create(error.m_message).leakRef();
if (errorLine)
*errorLine = error.m_line;
return 0;
}
return result.release().leakRef();
}
void JSScriptRetain(JSScriptRef script)
{
JSLockHolder locker(script->vm());
script->ref();
}
void JSScriptRelease(JSScriptRef script)
{
JSLockHolder locker(script->vm());
script->deref();
}
JSValueRef JSScriptEvaluate(JSContextRef context, JSScriptRef script, JSValueRef thisValueRef, JSValueRef* exception)
{
ExecState* exec = toJS(context);
JSLockHolder locker(exec);
if (script->vm() != &exec->vm()) {
RELEASE_ASSERT_NOT_REACHED();
return 0;
}
JSValue internalException;
JSValue thisValue = thisValueRef ? toJS(exec, thisValueRef) : jsUndefined();
JSValue result = evaluate(exec, SourceCode(script), thisValue, &internalException);
if (internalException) {
if (exception)
*exception = toRef(exec, internalException);
return 0;
}
ASSERT(result);
return toRef(exec, result);
}
}