+++ /dev/null
-/*
- * Copyright (C) 1999-2002 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) 2007 Cameron Zwarich (cwzwarich@uwaterloo.ca)
- * Copyright (C) 2007 Maks Orlovich
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Library 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
- * Library General Public License for more details.
- *
- * You should have received a copy of the GNU Library General Public License
- * along with this library; see the file COPYING.LIB. If not, write to
- * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
- * Boston, MA 02110-1301, USA.
- *
- */
-
-#include "config.h"
-#include "Arguments.h"
-
-#include "JSActivation.h"
-#include "JSFunction.h"
-#include "JSGlobalObject.h"
-
-using namespace std;
-
-namespace JSC {
-
-ASSERT_CLASS_FITS_IN_CELL(Arguments);
-
-const ClassInfo Arguments::info = { "Arguments", 0, 0, 0 };
-
-Arguments::~Arguments()
-{
- if (d->extraArguments != d->extraArgumentsFixedBuffer)
- delete [] d->extraArguments;
-}
-
-void Arguments::mark()
-{
- JSObject::mark();
-
- if (d->registerArray) {
- for (unsigned i = 0; i < d->numParameters; ++i) {
- if (!d->registerArray[i].marked())
- d->registerArray[i].mark();
- }
- }
-
- if (d->extraArguments) {
- unsigned numExtraArguments = d->numArguments - d->numParameters;
- for (unsigned i = 0; i < numExtraArguments; ++i) {
- if (!d->extraArguments[i].marked())
- d->extraArguments[i].mark();
- }
- }
-
- if (!d->callee->marked())
- d->callee->mark();
-
- if (d->activation && !d->activation->marked())
- d->activation->mark();
-}
-
-void Arguments::fillArgList(ExecState* exec, ArgList& args)
-{
- if (LIKELY(!d->deletedArguments)) {
- if (LIKELY(!d->numParameters)) {
- args.initialize(d->extraArguments, d->numArguments);
- return;
- }
-
- if (d->numParameters == d->numArguments) {
- args.initialize(&d->registers[d->firstParameterIndex], d->numArguments);
- return;
- }
-
- unsigned parametersLength = min(d->numParameters, d->numArguments);
- unsigned i = 0;
- for (; i < parametersLength; ++i)
- args.append(d->registers[d->firstParameterIndex + i].jsValue(exec));
- for (; i < d->numArguments; ++i)
- args.append(d->extraArguments[i - d->numParameters].jsValue(exec));
- return;
- }
-
- unsigned parametersLength = min(d->numParameters, d->numArguments);
- unsigned i = 0;
- for (; i < parametersLength; ++i) {
- if (!d->deletedArguments[i])
- args.append(d->registers[d->firstParameterIndex + i].jsValue(exec));
- else
- args.append(get(exec, i));
- }
- for (; i < d->numArguments; ++i) {
- if (!d->deletedArguments[i])
- args.append(d->extraArguments[i - d->numParameters].jsValue(exec));
- else
- args.append(get(exec, i));
- }
-}
-
-bool Arguments::getOwnPropertySlot(ExecState* exec, unsigned i, PropertySlot& slot)
-{
- if (i < d->numArguments && (!d->deletedArguments || !d->deletedArguments[i])) {
- if (i < d->numParameters) {
- slot.setRegisterSlot(&d->registers[d->firstParameterIndex + i]);
- } else
- slot.setValue(d->extraArguments[i - d->numParameters].jsValue(exec));
- return true;
- }
-
- return JSObject::getOwnPropertySlot(exec, Identifier(exec, UString::from(i)), slot);
-}
-
-bool Arguments::getOwnPropertySlot(ExecState* exec, const Identifier& propertyName, PropertySlot& slot)
-{
- bool isArrayIndex;
- unsigned i = propertyName.toArrayIndex(&isArrayIndex);
- if (isArrayIndex && i < d->numArguments && (!d->deletedArguments || !d->deletedArguments[i])) {
- if (i < d->numParameters) {
- slot.setRegisterSlot(&d->registers[d->firstParameterIndex + i]);
- } else
- slot.setValue(d->extraArguments[i - d->numParameters].jsValue(exec));
- return true;
- }
-
- if (propertyName == exec->propertyNames().length && LIKELY(!d->overrodeLength)) {
- slot.setValue(jsNumber(exec, d->numArguments));
- return true;
- }
-
- if (propertyName == exec->propertyNames().callee && LIKELY(!d->overrodeCallee)) {
- slot.setValue(d->callee);
- return true;
- }
-
- return JSObject::getOwnPropertySlot(exec, propertyName, slot);
-}
-
-void Arguments::put(ExecState* exec, unsigned i, JSValuePtr value, PutPropertySlot& slot)
-{
- if (i < d->numArguments && (!d->deletedArguments || !d->deletedArguments[i])) {
- if (i < d->numParameters)
- d->registers[d->firstParameterIndex + i] = JSValuePtr(value);
- else
- d->extraArguments[i - d->numParameters] = JSValuePtr(value);
- return;
- }
-
- JSObject::put(exec, Identifier(exec, UString::from(i)), value, slot);
-}
-
-void Arguments::put(ExecState* exec, const Identifier& propertyName, JSValuePtr value, PutPropertySlot& slot)
-{
- bool isArrayIndex;
- unsigned i = propertyName.toArrayIndex(&isArrayIndex);
- if (isArrayIndex && i < d->numArguments && (!d->deletedArguments || !d->deletedArguments[i])) {
- if (i < d->numParameters)
- d->registers[d->firstParameterIndex + i] = JSValuePtr(value);
- else
- d->extraArguments[i - d->numParameters] = JSValuePtr(value);
- return;
- }
-
- if (propertyName == exec->propertyNames().length && !d->overrodeLength) {
- d->overrodeLength = true;
- putDirect(propertyName, value, DontEnum);
- return;
- }
-
- if (propertyName == exec->propertyNames().callee && !d->overrodeCallee) {
- d->overrodeCallee = true;
- putDirect(propertyName, value, DontEnum);
- return;
- }
-
- JSObject::put(exec, propertyName, value, slot);
-}
-
-bool Arguments::deleteProperty(ExecState* exec, unsigned i)
-{
- if (i < d->numArguments) {
- if (!d->deletedArguments) {
- d->deletedArguments.set(new bool[d->numArguments]);
- memset(d->deletedArguments.get(), 0, sizeof(bool) * d->numArguments);
- }
- if (!d->deletedArguments[i]) {
- d->deletedArguments[i] = true;
- return true;
- }
- }
-
- return JSObject::deleteProperty(exec, Identifier(exec, UString::from(i)));
-}
-
-bool Arguments::deleteProperty(ExecState* exec, const Identifier& propertyName)
-{
- bool isArrayIndex;
- unsigned i = propertyName.toArrayIndex(&isArrayIndex);
- if (isArrayIndex && i < d->numArguments) {
- if (!d->deletedArguments) {
- d->deletedArguments.set(new bool[d->numArguments]);
- memset(d->deletedArguments.get(), 0, sizeof(bool) * d->numArguments);
- }
- if (!d->deletedArguments[i]) {
- d->deletedArguments[i] = true;
- return true;
- }
- }
-
- if (propertyName == exec->propertyNames().length && !d->overrodeLength) {
- d->overrodeLength = true;
- return true;
- }
-
- if (propertyName == exec->propertyNames().callee && !d->overrodeCallee) {
- d->overrodeCallee = true;
- return true;
- }
-
- return JSObject::deleteProperty(exec, propertyName);
-}
-
-} // namespace JSC
projects / apple / javascriptcore.git / blobdiff