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/*
* Copyright (C) 1999-2001 Harri Porten (porten@kde.org)
* Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
#include "config.h"
#include "FunctionPrototype.h"
#include "Arguments.h"
#include "JSArray.h"
#include "JSFunction.h"
#include "JSString.h"
#include "Interpreter.h"
#include "Lexer.h"
#include "PrototypeFunction.h"
namespace JSC {
ASSERT_CLASS_FITS_IN_CELL(FunctionPrototype);
static JSValue JSC_HOST_CALL functionProtoFuncToString(ExecState*, JSObject*, JSValue, const ArgList&);
static JSValue JSC_HOST_CALL functionProtoFuncApply(ExecState*, JSObject*, JSValue, const ArgList&);
static JSValue JSC_HOST_CALL functionProtoFuncCall(ExecState*, JSObject*, JSValue, const ArgList&);
FunctionPrototype::FunctionPrototype(ExecState* exec, PassRefPtr<Structure> structure)
: InternalFunction(&exec->globalData(), structure, exec->propertyNames().nullIdentifier)
{
putDirectWithoutTransition(exec->propertyNames().length, jsNumber(exec, 0), DontDelete | ReadOnly | DontEnum);
}
void FunctionPrototype::addFunctionProperties(ExecState* exec, Structure* prototypeFunctionStructure, NativeFunctionWrapper** callFunction, NativeFunctionWrapper** applyFunction)
{
putDirectFunctionWithoutTransition(exec, new (exec) NativeFunctionWrapper(exec, prototypeFunctionStructure, 0, exec->propertyNames().toString, functionProtoFuncToString), DontEnum);
*applyFunction = new (exec) NativeFunctionWrapper(exec, prototypeFunctionStructure, 2, exec->propertyNames().apply, functionProtoFuncApply);
putDirectFunctionWithoutTransition(exec, *applyFunction, DontEnum);
*callFunction = new (exec) NativeFunctionWrapper(exec, prototypeFunctionStructure, 1, exec->propertyNames().call, functionProtoFuncCall);
putDirectFunctionWithoutTransition(exec, *callFunction, DontEnum);
}
static JSValue JSC_HOST_CALL callFunctionPrototype(ExecState*, JSObject*, JSValue, const ArgList&)
{
return jsUndefined();
}
// ECMA 15.3.4
CallType FunctionPrototype::getCallData(CallData& callData)
{
callData.native.function = callFunctionPrototype;
return CallTypeHost;
}
// Functions
// Compatibility hack for the Optimost JavaScript library. (See <rdar://problem/6595040>.)
static inline void insertSemicolonIfNeeded(UString& functionBody)
{
ASSERT(functionBody[0] == '{');
ASSERT(functionBody[functionBody.size() - 1] == '}');
for (size_t i = functionBody.size() - 2; i > 0; --i) {
UChar ch = functionBody[i];
if (!Lexer::isWhiteSpace(ch) && !Lexer::isLineTerminator(ch)) {
if (ch != ';' && ch != '}')
functionBody = functionBody.substr(0, i + 1) + ";" + functionBody.substr(i + 1, functionBody.size() - (i + 1));
return;
}
}
}
JSValue JSC_HOST_CALL functionProtoFuncToString(ExecState* exec, JSObject*, JSValue thisValue, const ArgList&)
{
if (thisValue.isObject(&JSFunction::info)) {
JSFunction* function = asFunction(thisValue);
if (!function->isHostFunction()) {
UString functionBody = function->body()->toSourceString();
insertSemicolonIfNeeded(functionBody);
return jsString(exec, "function " + function->name(&exec->globalData()) + "(" + function->body()->paramString() + ") " + functionBody);
}
}
if (thisValue.isObject(&InternalFunction::info)) {
InternalFunction* function = asInternalFunction(thisValue);
return jsString(exec, "function " + function->name(&exec->globalData()) + "() {\n [native code]\n}");
}
#ifdef QT_BUILD_SCRIPT_LIB //same error message as in the old engine, and in mozilla
return throwError(exec, TypeError, "Function.prototype.toString called on incompatible object");
#else
return throwError(exec, TypeError);
#endif
}
JSValue JSC_HOST_CALL functionProtoFuncApply(ExecState* exec, JSObject*, JSValue thisValue, const ArgList& args)
{
CallData callData;
CallType callType = thisValue.getCallData(callData);
if (callType == CallTypeNone)
return throwError(exec, TypeError);
JSValue array = args.at(1);
MarkedArgumentBuffer applyArgs;
if (!array.isUndefinedOrNull()) {
if (!array.isObject())
return throwError(exec, TypeError);
if (asObject(array)->classInfo() == &Arguments::info)
asArguments(array)->fillArgList(exec, applyArgs);
else if (isJSArray(&exec->globalData(), array))
asArray(array)->fillArgList(exec, applyArgs);
else if (asObject(array)->inherits(&JSArray::info)) {
unsigned length = asArray(array)->get(exec, exec->propertyNames().length).toUInt32(exec);
for (unsigned i = 0; i < length; ++i)
applyArgs.append(asArray(array)->get(exec, i));
} else
return throwError(exec, TypeError);
}
return call(exec, thisValue, callType, callData, args.at(0), applyArgs);
}
JSValue JSC_HOST_CALL functionProtoFuncCall(ExecState* exec, JSObject*, JSValue thisValue, const ArgList& args)
{
CallData callData;
CallType callType = thisValue.getCallData(callData);
if (callType == CallTypeNone)
return throwError(exec, TypeError);
ArgList callArgs;
args.getSlice(1, callArgs);
return call(exec, thisValue, callType, callData, args.at(0), callArgs);
}
} // namespace JSC
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