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Diffstat (limited to 'src/script/qscriptcontext_p.cpp')
| -rw-r--r-- | src/script/qscriptcontext_p.cpp | 2598 |
1 files changed, 0 insertions, 2598 deletions
diff --git a/src/script/qscriptcontext_p.cpp b/src/script/qscriptcontext_p.cpp deleted file mode 100644 index ba0783b3f..000000000 --- a/src/script/qscriptcontext_p.cpp +++ /dev/null @@ -1,2598 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). -** Contact: Nokia Corporation (qt-info@nokia.com) -** -** This file is part of the QtScript module of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:LGPL$ -** No Commercial Usage -** This file contains pre-release code and may not be distributed. -** You may use this file in accordance with the terms and conditions -** contained in the either Technology Preview License Agreement or the -** Beta Release License Agreement. -** -** GNU Lesser General Public License Usage -** Alternatively, this file may be used under the terms of the GNU Lesser -** General Public License version 2.1 as published by the Free Software -** Foundation and appearing in the file LICENSE.LGPL included in the -** packaging of this file. Please review the following information to -** ensure the GNU Lesser General Public License version 2.1 requirements -** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. -** -** In addition, as a special exception, Nokia gives you certain -** additional rights. These rights are described in the Nokia Qt LGPL -** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this -** package. -** -** GNU General Public License Usage -** Alternatively, this file may be used under the terms of the GNU -** General Public License version 3.0 as published by the Free Software -** Foundation and appearing in the file LICENSE.GPL included in the -** packaging of this file. Please review the following information to -** ensure the GNU General Public License version 3.0 requirements will be -** met: http://www.gnu.org/copyleft/gpl.html. -** -** If you are unsure which license is appropriate for your use, please -** contact the sales department at http://qt.nokia.com/contact. -** $QT_END_LICENSE$ -** -****************************************************************************/ - -#include <QtCore/QtDebug> - -#ifndef QT_NO_SCRIPT - -#include "qscriptcontext_p.h" -#include "qscriptengine_p.h" -#include "qscriptvalueimpl_p.h" -#include "qscriptmember_p.h" -#include "qscriptobject_p.h" -#include "qscriptprettypretty_p.h" -#include "qscriptast_p.h" -#include "qscriptnodepool_p.h" -#include "qscriptcompiler_p.h" -#include "qscriptextenumeration_p.h" - -#include <math.h> // floor & friends... - -QT_BEGIN_NAMESPACE - -#define Q_SCRIPT_NO_PRINT_GENERATED_CODE - -#define Q_SCRIPT_NO_JOINED_FUNCTION - -#define CHECK_TEMPSTACK(needed) do { \ - if (stackPtr + needed >= eng->tempStackEnd) { \ - throwError(QLatin1String("out of memory")); \ - HandleException(); \ - } \ -} while (0) - -#ifndef Q_SCRIPT_NO_PRINT_GENERATED_CODE -static QTextStream qout(stderr, QIODevice::WriteOnly); -#endif - -static inline void qscript_uint_to_string_helper(uint i, QString &s) -{ - switch (i) { - case 0: case 1: case 2: case 3: case 4: - case 5: case 6: case 7: case 8: case 9: - s += QLatin1Char('0' + i); - break; - - default: - qscript_uint_to_string_helper(i / 10, s); - s += QLatin1Char('0' + (i % 10)); - } -} - -static inline void qscript_uint_to_string(qsreal i, QString &s) -{ - if ((i < 0) || (i > 0xFFFFFFFF)) - return; // nothing to do - - qsreal x = ::fmod(i, 10); - - if (x != 0.0 && x != 1.0 - && x != 2.0 && x != 3.0 - && x != 4.0 && x != 5.0 - && x != 6.0 && x != 7.0 - && x != 8.0 && x != 9.0) - return; // nothing to do - - qscript_uint_to_string_helper(uint(i), s); -} - -static inline quint32 toArrayIndex(const QScriptValueImpl &v) -{ - if (v.isNumber()) { - quint32 ui = v.toUInt32(); - if (qsreal(ui) == v.m_number_value) - return ui; - } else if (v.isString()) { - QByteArray bytes = v.m_string_value->s.toUtf8(); - char *eptr; - quint32 pos = strtoul(bytes.constData(), &eptr, 10); - if ((eptr == bytes.constData() + bytes.size()) - && (QByteArray::number(pos) == bytes)) { - return pos; - } - } - return 0xFFFFFFFF; -} - -#define CREATE_MEMBER(__obj__, __name__, __member__, __flags__) do { \ - (__obj__).createMember(__name__, __member__, __flags__); \ - eng->adjustBytesAllocated(sizeof(QScript::Member) + sizeof(QScriptValueImpl)); \ -} while (0) - -#define BEGIN_PREFIX_OPERATOR \ - QScriptValue::ResolveFlags mode; \ - mode = QScriptValue::ResolveFlags(stackPtr[0].m_int_value) \ - | QScriptValue::ResolvePrototype; \ - --stackPtr; \ - QScriptValueImpl object = eng->toObject(stackPtr[-1]); \ - if (!object.isObject()) { \ - stackPtr -= 2; \ - throwTypeError(QLatin1String("not an object")); \ - HandleException(); \ - } \ - QScriptNameIdImpl *memberName = 0; \ - if (stackPtr[0].isString() && stackPtr[0].m_string_value->unique) \ - memberName = stackPtr[0].m_string_value; \ - else \ - memberName = eng->nameId(stackPtr[0].toString(), /*persistent=*/false); \ - QScript::Member member; \ - QScriptValueImpl base; \ - QScriptValueImpl value; \ - QScriptValueImpl getter; \ - QScriptValueImpl setter; \ - const bool isMemberAssignment = (object.m_object_value != m_scopeChain.m_object_value); \ - if (object.resolve(memberName, &member, &base, mode, QScript::ReadWrite)) { \ - base.get(member, &value); \ - if (hasUncaughtException()) { \ - stackPtr -= 2; \ - HandleException(); \ - } else if (member.isGetterOrSetter()) { \ - if (member.isGetter()) { \ - getter = value; \ - if (!member.isSetter() && !base.m_object_value->findSetter(&member)) { \ - stackPtr -= 2; \ - throwError(QLatin1String("No setter defined")); \ - HandleException(); \ - } \ - base.get(member, &setter); \ - } else { \ - setter = value; \ - QScript::Member tmp = member; \ - if (!base.m_object_value->findGetter(&member)) { \ - stackPtr -= 2; \ - throwError(QLatin1String("No getter defined")); \ - HandleException(); \ - } \ - base.get(member, &getter); \ - member = tmp; \ - } \ - value = getter.call(object); \ - if (hasUncaughtException()) { \ - stackPtr -= 2; \ - Done(); \ - } \ - } \ - } else if (!isMemberAssignment) { \ - stackPtr -= 2; \ - throwNotDefined(memberName); \ - HandleException(); \ - } else { \ - base = object; \ - CREATE_MEMBER(base, memberName, &member, /*flags=*/0); \ - value = undefined; \ - } - -#define END_PREFIX_OPERATOR \ - if (member.isSetter()) { \ - setter.call(object, QScriptValueImplList() << value); \ - if (hasUncaughtException()) { \ - stackPtr -= 2; \ - Done(); \ - } \ - } else { \ - if (member.isWritable()) { \ - if (isMemberAssignment && (base.m_object_value != object.m_object_value)) { \ - base = object; \ - CREATE_MEMBER(base, memberName, &member, /*flags=*/0); \ - } \ - base.put(member, value); \ - if (hasUncaughtException()) { \ - stackPtr -= 2; \ - HandleException(); \ - } \ - } \ - } \ - *--stackPtr = value; \ - ++iPtr; - -#define BEGIN_INPLACE_OPERATOR \ - if (! stackPtr[-1].isReference()) { \ - stackPtr -= 2; \ - throwSyntaxError(QLatin1String("invalid assignment lvalue")); \ - HandleException(); \ - } \ - QScriptValue::ResolveFlags mode; \ - mode = QScriptValue::ResolveFlags(stackPtr[-1].m_int_value) \ - | QScriptValue::ResolvePrototype; \ - QScriptValueImpl object = eng->toObject(stackPtr[-3]); \ - if (! object.isValid()) { \ - stackPtr -= 4; \ - throwTypeError(QLatin1String("not an object")); \ - HandleException(); \ - } \ - QScriptNameIdImpl *memberName = 0; \ - if (stackPtr[-2].isString() && stackPtr[-2].m_string_value->unique) \ - memberName = stackPtr[-2].m_string_value; \ - else \ - memberName = eng->nameId(stackPtr[-2].toString(), /*persistent=*/false); \ - QScriptValueImpl lhs; \ - QScriptValueImpl base; \ - QScript::Member member; \ - QScriptValueImpl getter; \ - QScriptValueImpl setter; \ - const bool isMemberAssignment = (object.m_object_value != m_scopeChain.m_object_value); \ - if (object.resolve(memberName, &member, &base, mode, QScript::ReadWrite)) { \ - base.get(member, &lhs); \ - if (hasUncaughtException()) { \ - stackPtr -= 4; \ - HandleException(); \ - } else if (member.isGetterOrSetter()) { \ - if (member.isGetter()) { \ - getter = lhs; \ - if (!member.isSetter() && !base.m_object_value->findSetter(&member)) { \ - stackPtr -= 4; \ - throwError(QLatin1String("No setter defined")); \ - HandleException(); \ - } \ - base.get(member, &setter); \ - } else { \ - setter = lhs; \ - QScript::Member tmp = member; \ - if (!base.m_object_value->findGetter(&member)) { \ - stackPtr -= 4; \ - throwError(QLatin1String("No getter defined")); \ - HandleException(); \ - } \ - base.get(member, &getter); \ - member = tmp; \ - } \ - lhs = getter.call(object); \ - if (hasUncaughtException()) { \ - stackPtr -= 4; \ - Done(); \ - } \ - } \ - } else if (!isMemberAssignment) { \ - stackPtr -= 4; \ - throwNotDefined(memberName); \ - HandleException(); \ - } else { \ - base = object; \ - CREATE_MEMBER(base, memberName, &member, /*flags=*/0); \ - lhs = undefined; \ - } \ - QScriptValueImpl rhs = stackPtr[0]; - -#define END_INPLACE_OPERATOR \ - if (member.isSetter()) { \ - setter.call(object, QScriptValueImplList() << *stackPtr); \ - if (hasUncaughtException()) { \ - stackPtr -= 1; \ - Done(); \ - } \ - } else { \ - if (member.isWritable()) { \ - if (isMemberAssignment && (base.m_object_value != object.m_object_value)) { \ - base = object; \ - CREATE_MEMBER(base, memberName, &member, /*flags=*/0); \ - } \ - base.put(member, *stackPtr); \ - if (hasUncaughtException()) { \ - stackPtr -= 1; \ - HandleException(); \ - } \ - } \ - } \ - ++iPtr; - -namespace QScript { - -void ScriptFunction::execute(QScriptContextPrivate *context) -{ - if (! m_compiledCode) { - QScriptEnginePrivate *eng = context->engine(); - Compiler compiler(eng); - - CompilationUnit unit = compiler.compile(m_definition->body, formals); - if (! unit.isValid()) { - context->throwError(unit.errorMessage()); - return; - } - - m_compiledCode = m_astPool->createCompiledCode(m_definition->body, unit); - } - - context->execute(m_compiledCode); -} - -QString ScriptFunction::toString(QScriptContextPrivate *) const -{ - QString str; - QTextStream out(&str, QIODevice::WriteOnly); - PrettyPretty pp(out); - pp(m_definition, /*indent=*/ 0); - return str; -} - -QString ScriptFunction::fileName() const -{ - return m_astPool->fileName(); -} - -QString ScriptFunction::functionName() const -{ - if (!m_definition->name) - return QString(); - return m_definition->name->s; -} - -int ScriptFunction::startLineNumber() const -{ - return m_definition->startLine; -} - -int ScriptFunction::endLineNumber() const -{ - return m_definition->endLine; -} - -} // namespace QScript - -/*! - \internal - - Resolves and gets the value specified by \a stackPtr. - stackPtr[0] contains the member specifier, stackPtr[-1] contains the object. - If the member can be resolved, sets \a value to the value of that member, - otherwise returns false. -*/ -bool QScriptContextPrivate::resolveField(QScriptEnginePrivate *eng, - QScriptValueImpl *stackPtr, - QScriptValueImpl *value) -{ - const QScriptValueImpl &m = stackPtr[0]; - QScriptValueImpl &object = stackPtr[-1]; - - if (! object.isObject()) - object = eng->toObject(object); - - if (! object.isValid()) - return false; - - if (QScript::Ecma::Array::Instance *arrayInstance = eng->arrayConstructor->get(object)) { - quint32 pos = toArrayIndex(m); - if (pos != 0xFFFFFFFF) { - *value = arrayInstance->value.at(pos); - - if (! value->isValid()) - *value = eng->undefinedValue(); - - return true; - } - } - - QScriptNameIdImpl *nameId = m.isString() ? m.m_string_value : 0; - - if (! nameId || ! nameId->unique) - nameId = eng->nameId(QScriptEnginePrivate::convertToNativeString(m), /*persistent=*/false); // ### slow! - - QScript::Member member; - QScriptValueImpl base; - - if (! object.resolve(nameId, &member, &base, QScriptValue::ResolveFull, QScript::Read)) // ### ... - return false; - - if (QScriptEnginePrivate::strictlyEquals(base, eng->m_globalObject)) - stackPtr[-1] = base; - else if (object.classInfo() == eng->m_class_with) - stackPtr[-1] = object.prototype(); - - base.get(member, value); - - if (member.isGetterOrSetter()) { - // call the getter function - QScriptValueImpl getter; - if (member.isGetter()) { - getter = *value; - } else { - if (!base.m_object_value->findGetter(&member)) { - *value = eng->undefinedValue(); - return true; - } - base.get(member, &getter); - } - *value = getter.call(object); - } - - return true; -} - -void QScriptContextPrivate::execute(QScript::Code *code) -{ - int oldCurrentLine = currentLine; - int oldCurrentColumn = currentColumn; - QScript::Code *oldCode = m_code; - m_code = code; - -#ifndef Q_SCRIPT_NO_PRINT_GENERATED_CODE - qout << QLatin1String("function:") << endl; - for (QScriptInstruction *current = code->firstInstruction; current != code->lastInstruction; ++current) { - qout << int(current - code->firstInstruction) << QLatin1String(":\t"); - current->print(qout); - qout << endl; - } - qout << endl; -#endif - - QScriptEnginePrivate *eng = engine(); - - bool wasEvaluating = eng->m_evaluating; - if (!wasEvaluating) { - eng->setupProcessEvents(); - eng->resetAbortFlag(); - } - eng->m_evaluating = true; - - // set up the temp stack - if (! tempStack) - stackPtr = tempStack = eng->tempStackBegin; - - QScriptValueImpl undefined(eng->undefinedValue()); - - catching = false; - m_state = QScriptContext::NormalState; - m_result = undefined; - firstInstruction = code->firstInstruction; - lastInstruction = code->lastInstruction; - iPtr = code->firstInstruction; - - if (!m_scopeChain.isValid()) - m_scopeChain = m_activation; - -#ifndef Q_SCRIPT_NO_EVENT_NOTIFY - eng->notifyFunctionEntry(this); -#endif - -#ifndef Q_SCRIPT_DIRECT_CODE - -# define I(opc) case QScriptInstruction::OP_##opc -# define Next() goto Lfetch -# define Done() goto Ldone -# define HandleException() goto Lhandle_exception -# define Abort() goto Labort - -Lfetch: - - -#else - -# define I(opc) qscript_execute_##opc -# define Next() goto *iPtr->code -# define Done() goto Ldone -# define HandleException() goto Lhandle_exception -# define Abort() goto Labort - - static void * const jump_table[] = { - -# define Q_SCRIPT_DEFINE_OPERATOR(op) &&I(op), -# include "instruction.table" -# undef Q_SCRIPT_DEFINE_OPERATOR - }; // jump_table - - - if (!code->optimized) { - for (QScriptInstruction *current = code->firstInstruction; current != code->lastInstruction; ++current) { - current->code = jump_table[current->op]; - } - - code->optimized = true; - } - -#endif -Ltop: - -#ifndef Q_SCRIPT_DIRECT_CODE - switch (iPtr->op) { -#else - goto *iPtr->code; -#endif - - I(Nop): - { - ++iPtr; - } Next(); - - I(LoadUndefined): - { - CHECK_TEMPSTACK(1); - *(++stackPtr) = undefined; - ++iPtr; - } Next(); - - I(LoadTrue): - { - CHECK_TEMPSTACK(1); - *(++stackPtr) = QScriptValueImpl(true); - ++iPtr; - } Next(); - - I(LoadFalse): - { - CHECK_TEMPSTACK(1); - *(++stackPtr) = QScriptValueImpl(false); - ++iPtr; - } Next(); - - I(LoadThis): - { - CHECK_TEMPSTACK(1); - Q_ASSERT(m_thisObject.isObject()); - *++stackPtr = m_thisObject; - ++iPtr; - } Next(); - - I(LoadActivation): - { - CHECK_TEMPSTACK(1); - *++stackPtr = m_activation; - ++iPtr; - } Next(); - - I(LoadNull): - { - CHECK_TEMPSTACK(1); - *(++stackPtr) = eng->nullValue(); - ++iPtr; - } Next(); - - I(LoadNumber): - { - CHECK_TEMPSTACK(1); - *++stackPtr = iPtr->operand[0]; - ++iPtr; - } Next(); - - - I(LoadString): - { - CHECK_TEMPSTACK(1); - *++stackPtr = iPtr->operand[0]; - ++iPtr; - } Next(); - - I(NewString): - { - CHECK_TEMPSTACK(1); - eng->newNameId(++stackPtr, iPtr->operand[0].m_string_value); - ++iPtr; - } Next(); - - I(Duplicate): - { - CHECK_TEMPSTACK(1); - ++stackPtr; - *stackPtr = stackPtr[-1]; - ++iPtr; - } Next(); - - I(Swap): - { - QScriptValueImpl tmp = stackPtr[0]; - *stackPtr = stackPtr[-1]; - stackPtr[-1] = tmp; - ++iPtr; - } Next(); - - - I(Receive): - { - int n = iPtr->operand[0].m_int_value; - - if (n >= argc) { - throwError(QLatin1String("invalid argument")); - HandleException(); - } - - CHECK_TEMPSTACK(1); - *++stackPtr = argument(n); - ++iPtr; - } Next(); - - I(Fetch): - { - CHECK_TEMPSTACK(1); - - QScriptNameIdImpl *memberName = iPtr->operand[0].m_string_value; - - QScriptValueImpl base; - QScript::Member member; - - QScriptObject *instance = m_scopeChain.m_object_value; - if (instance->findMember(memberName, &member)) { - instance->get(member, ++stackPtr); - base = m_scopeChain; - } else { - if (m_scopeChain.resolve_helper(memberName, &member, &base, QScriptValue::ResolveFull, QScript::Read)) { - base.get(member, ++stackPtr); - if (hasUncaughtException()) { - stackPtr -= 1; - HandleException(); - } - } else { - throwNotDefined(memberName); - HandleException(); - } - } - if (member.isGetterOrSetter()) { - // locate the getter function - QScriptValueImpl getter; - if (member.isGetter()) { - getter = *stackPtr; - } else { - if (!base.m_object_value->findGetter(&member)) { - stackPtr -= 1; - throwError(QLatin1String("No getter defined")); - HandleException(); - } - base.get(member, &getter); - } - // decide the this-object. This is the object that actually - // has the getter (in its prototype chain). - QScriptValueImpl object = m_scopeChain; - while (!object.resolve(memberName, &member, &base, QScriptValue::ResolvePrototype, QScript::Read)) - object = object.scope(); - if (object.classInfo() == eng->m_class_with) - object = object.prototype(); - - *stackPtr = getter.call(object); - if (hasUncaughtException()) { - stackPtr -= 1; - Done(); - } - } - ++iPtr; - } Next(); - - I(Resolve): - { - Q_ASSERT(iPtr->operand[0].isString()); - - CHECK_TEMPSTACK(2); - *++stackPtr = m_scopeChain; - *++stackPtr = iPtr->operand[0]; - eng->newReference(++stackPtr, QScriptValue::ResolveScope); - ++iPtr; - } Next(); - - I(PutField): - { - Q_ASSERT(stackPtr[-1].isReference()); - - const QScriptValueImpl &object = stackPtr[-3]; - QScriptNameIdImpl *memberName = stackPtr[-2].m_string_value; - const QScriptValueImpl &value = stackPtr[0]; - - QScript::Member member; - QScriptValueImpl base; - - if (! object.resolve(memberName, &member, &base, QScriptValue::ResolveLocal, QScript::Write)) { - base = object; - CREATE_MEMBER(base, memberName, &member, /*flags=*/0); - } - - base.put(member, value); - stackPtr -= 4; - if (hasUncaughtException()) - HandleException(); - ++iPtr; - } Next(); - - I(Call): - { - int argc = iPtr->operand[0].m_int_value; - QScriptValueImpl *argp = stackPtr - argc; - - QScriptValueImpl base; - QScriptValueImpl callee; - - bool isReference = argp[0].isReference(); - - if (! isReference) { // we have a value - base = eng->m_globalObject; - callee = argp[0]; - } else if (resolveField(eng, &argp[-1], &callee)) { - if (hasUncaughtException()) { - stackPtr = argp - 3; - HandleException(); - } - base = argp[-2]; - } else { - QScriptValueImpl member = argp[-1]; - stackPtr = argp - 1; - Q_ASSERT(isReference); - stackPtr -= 2; - - if (member.isString()) - throwNotDefined(member.toString()); - else - throwNotDefined(QLatin1String("function")); - HandleException(); - } - - Q_ASSERT(base.isValid()); - Q_ASSERT(callee.isValid()); - - QScriptFunction *function = QScriptEnginePrivate::convertToNativeFunction(callee); - if (! function) { - QScriptValueImpl member = argp[-1]; - QString message; - if (member.isString()) { - message = QString::fromLatin1("%0 is not a function") - .arg(member.toString()); - } else { - message = QLatin1String("not a function"); - } - throwTypeError(message); - HandleException(); - } - - if (++eng->m_callDepth == eng->m_maxCallDepth) { - throwError(QLatin1String("call stack overflow")); - HandleException(); - } - - QScriptContextPrivate *nested_data = eng->pushContext(); - nested_data->m_thisObject = base; - nested_data->m_callee = callee; - - // create the activation - eng->newActivation(&nested_data->m_activation); - QScriptObject *activation_data = nested_data->m_activation.m_object_value; - - int formalCount = function->formals.count(); - int mx = qMax(formalCount, argc); - activation_data->m_members.resize(mx); - activation_data->m_values.resize(mx); - for (int i = 0; i < mx; ++i) { - QScriptNameIdImpl *nameId = 0; - if (i < formalCount) - nameId = function->formals.at(i); - - activation_data->m_members[i].object(nameId, i, - QScriptValue::Undeletable - | QScriptValue::SkipInEnumeration); - activation_data->m_values[i] = (i < argc) ? argp[i + 1] : undefined; - } - - nested_data->argc = argc; - if (callee.m_object_value->m_scope.isValid()) - activation_data->m_scope = callee.m_object_value->m_scope; - else - activation_data->m_scope = eng->m_globalObject; - nested_data->tempStack = stackPtr; - nested_data->args = &argp[1]; - - function->execute(nested_data); - - --eng->m_callDepth; - - stackPtr = argp - 1; - if (isReference) - stackPtr -= 2; - - if (nested_data->m_state == QScriptContext::ExceptionState) { - eng->popContext(); - if (eng->shouldAbort()) - Abort(); - else - Done(); - } - - CHECK_TEMPSTACK(1); - *++stackPtr = nested_data->m_result; - - eng->popContext(); - - if (eng->shouldAbort()) - Abort(); - - if (eng->m_processEventsInterval > 0) - eng->processEvents(); - - ++iPtr; - } Next(); - - - I(NewArray): - { - CHECK_TEMPSTACK(1); - eng->arrayConstructor->newArray(++stackPtr, QScript::Array(eng)); - ++iPtr; - } Next(); - - I(NewRegExp): - { - CHECK_TEMPSTACK(1); - - QString pattern = eng->toString(iPtr->operand[0].m_string_value); -#ifndef QT_NO_REGEXP - QString literal = pattern; -#endif - int flags = 0; - if (iPtr->operand[1].isValid()) { - flags = iPtr->operand[1].m_int_value; -#ifndef QT_NO_REGEXP - if (flags != 0) { - literal += QLatin1Char('/'); - literal += QString::number(flags); - } -#endif - } - -#ifndef QT_NO_REGEXP - QRegExp rx; - // lazy compilation of regexp literals - QHash<QString, QRegExp>::const_iterator it; - it = eng->m_regExpLiterals.constFind(literal); - if (it == eng->m_regExpLiterals.constEnd()) { - rx = QScript::Ecma::RegExp::toRegExp(pattern, flags); - eng->m_regExpLiterals.insert(literal, rx); - } else { - rx = *it; - } - eng->regexpConstructor->newRegExp(++stackPtr, rx, flags); -#else - eng->regexpConstructor->newRegExp(++stackPtr, pattern, flags); -#endif - ++iPtr; - } Next(); - - I(NewObject): - { - CHECK_TEMPSTACK(1); - eng->objectConstructor->newObject(++stackPtr); - ++iPtr; - } Next(); - - I(New): - { - int argc = iPtr->operand[0].m_int_value; - QScriptValueImpl *argp = stackPtr - argc; - - // QScriptValueImpl base; - QScriptValueImpl callee; - - bool isReference = argp[0].isReference(); - - if (! isReference) { // we have a value - // base = eng->globalObject; - callee = argp[0]; - } else if (resolveField(eng, &argp[-1], &callee)) { - // base = argp[-2]; - if (hasUncaughtException()) { - stackPtr = argp - 3; - HandleException(); - } - } else { - QScriptValueImpl member = argp[-1]; - stackPtr = argp - 1; - Q_ASSERT(isReference); - stackPtr -= 2; - - if (member.isString()) - throwNotDefined(member.toString()); - else - throwNotDefined(QLatin1String("constructor")); - HandleException(); - } - - // Q_ASSERT(base.isValid()); - Q_ASSERT(callee.isValid()); - - QScriptFunction *function = QScriptEnginePrivate::convertToNativeFunction(callee); - if (! function) { - QScriptValueImpl member = argp[-1]; - QString message; - if (member.isString()) { - message = QString::fromLatin1("%0 is not a constructor") - .arg(member.toString()); - } else { - message = QLatin1String("not a constructor"); - } - throwTypeError(message); - HandleException(); - } - - if (++eng->m_callDepth == eng->m_maxCallDepth) { - throwError(QLatin1String("call stack overflow")); - HandleException(); - } - - QScriptContextPrivate *nested_data = eng->pushContext(); - nested_data->m_callee = callee; - nested_data->m_calledAsConstructor = true; - - // create the activation - eng->newActivation(&nested_data->m_activation); - QScriptObject *activation_data = nested_data->m_activation.m_object_value; - - int formalCount = function->formals.count(); - int mx = qMax(formalCount, argc); - activation_data->m_members.resize(mx); - activation_data->m_values.resize(mx); - for (int i = 0; i < mx; ++i) { - QScriptNameIdImpl *nameId = 0; - if (i < formalCount) - nameId = function->formals.at(i); - - activation_data->m_members[i].object(nameId, i, - QScriptValue::Undeletable - | QScriptValue::SkipInEnumeration); - activation_data->m_values[i] = (i < argc) ? argp[i + 1] : undefined; - } - - eng->objectConstructor->newObject(&nested_data->m_thisObject); - nested_data->argc = argc; - if (callee.m_object_value->m_scope.isValid()) - activation_data->m_scope = callee.m_object_value->m_scope; - else - activation_data->m_scope = eng->m_globalObject; - nested_data->tempStack = stackPtr; - nested_data->args = &argp[1]; - nested_data->m_result = undefined; - - QScriptObject *instance = nested_data->m_thisObject.m_object_value; - - // set [[prototype]] - QScriptValueImpl dummy; - QScript::Member proto; - if (callee.resolve(eng->idTable()->id_prototype, &proto, &dummy, QScriptValue::ResolveLocal, QScript::Read)) - callee.get(proto, &instance->m_prototype); - if (!instance->m_prototype.isObject()) - instance->m_prototype = eng->objectConstructor->publicPrototype; - - function->execute(nested_data); - - --eng->m_callDepth; - - stackPtr = argp - 1; - if (isReference) - stackPtr -= 2; - - if (! nested_data->m_result.isValid()) - nested_data->m_result = undefined; - else if (! nested_data->m_result.isObject()) - nested_data->m_result = nested_data->m_thisObject; - - if (nested_data->m_state == QScriptContext::ExceptionState) { - eng->popContext(); - if (eng->shouldAbort()) - Abort(); - else - Done(); - } - - CHECK_TEMPSTACK(1); - - *++stackPtr = nested_data->m_result; - - eng->popContext(); - - if (eng->shouldAbort()) - Abort(); - - if (eng->m_processEventsInterval > 0) - eng->processEvents(); - - ++iPtr; - } Next(); - - I(FetchField): - { - QScriptValueImpl object = eng->toObject(stackPtr[-1]); - if (! object.isValid()) { - stackPtr -= 2; - throwTypeError(QLatin1String("not an object")); - HandleException(); - } - - QScriptValueImpl m = stackPtr[0]; - - QScript::Ecma::Array::Instance *arrayInstance = 0; - if (object.classInfo() == eng->arrayConstructor->classInfo()) - arrayInstance = static_cast<QScript::Ecma::Array::Instance *> (object.m_object_value->m_data); - - if (arrayInstance) { - quint32 pos = toArrayIndex(m); - if (pos != 0xFFFFFFFF) { - QScriptValueImpl val = arrayInstance->value.at(pos); - if (val.isValid()) { - *--stackPtr = val; - ++iPtr; - Next(); - } - } - } - - QScriptNameIdImpl *nameId = m.isString() ? m.m_string_value : 0; - - if (! nameId || ! nameId->unique) { - QString str; - - if (m.isNumber()) - qscript_uint_to_string(m.m_number_value, str); - - if (str.isEmpty()) - str = QScriptEnginePrivate::convertToNativeString(m); - - nameId = eng->nameId(str, /*persistent=*/false); - } - - QScript::Member member; - QScriptValueImpl base; - - if (object.resolve(nameId, &member, &base, QScriptValue::ResolvePrototype, QScript::Read)) { - base.get(member, --stackPtr); - if (hasUncaughtException()) { - stackPtr -= 1; - HandleException(); - } else if (member.isGetterOrSetter()) { - // call the getter function - QScriptValueImpl getter; - if (member.isGetter()) { - getter = *stackPtr; - } else { - if (!base.m_object_value->findGetter(&member)) { - stackPtr -= 1; - throwError(QLatin1String("No getter defined")); - HandleException(); - } - base.get(member, &getter); - } - *stackPtr = getter.call(object); - if (hasUncaughtException()) { - stackPtr -= 1; - Done(); - } - } - } else { - *(--stackPtr) = undefined; - } - - ++iPtr; - } Next(); - - I(LazyArguments): - { - QScript::Member member; - QScriptValueImpl base; - QScriptNameIdImpl *arguments = eng->idTable()->id_arguments; - if (!m_activation.resolve(arguments, &member, &base, QScriptValue::ResolveLocal, QScript::Read)) { - CREATE_MEMBER(m_activation, arguments, &member, QScriptValue::Undeletable); - if (!m_arguments.isValid()) { - if (eng->strictlyEquals(m_activation, eng->globalObject())) - m_arguments = undefined; - else - eng->newArguments(&m_arguments, m_activation, argc, m_callee); - } - m_activation.put(member, m_arguments); - } - ++iPtr; - } Next(); - - I(DeclareLocal): - { - QScriptValueImpl &act = m_activation; - - QScriptNameIdImpl *memberName = iPtr->operand[0].m_string_value; - bool readOnly = iPtr->operand[1].m_int_value != 0; - QScript::Member member; - QScriptValueImpl object; - - if (! act.resolve(memberName, &member, &object, QScriptValue::ResolveLocal, QScript::ReadWrite)) { - uint flags = QScriptValue::Undeletable; - if (readOnly) - flags |= QScript::Member::UninitializedConst | QScriptValue::ReadOnly; - CREATE_MEMBER(act, memberName, &member, flags); - act.put(member, undefined); - } - ++iPtr; - } Next(); - - I(Assign): - { - if (! stackPtr[-1].isReference()) { - stackPtr -= 2; - throwSyntaxError(QLatin1String("invalid assignment lvalue")); - HandleException(); - } - - QScriptValue::ResolveFlags mode; - mode = QScriptValue::ResolveFlags(stackPtr[-1].m_int_value) - | QScriptValue::ResolvePrototype; - - QScriptValueImpl object = eng->toObject(stackPtr[-3]); - if (! object.isValid()) { - stackPtr -= 4; - throwTypeError(QLatin1String("invalid assignment lvalue")); - HandleException(); - } - - QScriptValueImpl m = stackPtr[-2]; - QScriptValueImpl value = stackPtr[0]; - - quint32 pos = 0xFFFFFFFF; - - QScript::Ecma::Array::Instance *arrayInstance = eng->arrayConstructor->get(object); - if (arrayInstance) - pos = toArrayIndex(m); - - stackPtr -= 3; - - if (pos != 0xFFFFFFFF) - arrayInstance->value.assign(pos, value); - - else { - QScriptNameIdImpl *memberName; - - if (m.isString() && m.m_string_value->unique) - memberName = m.m_string_value; - else - memberName = eng->nameId(QScriptEnginePrivate::convertToNativeString(m), /*persistent=*/false); - - QScriptValueImpl base; - QScript::Member member; - - const bool isMemberAssignment = (object.m_object_value != m_scopeChain.m_object_value); - if (! object.resolve(memberName, &member, &base, mode, QScript::Write)) { - if (isMemberAssignment) - base = object; - else - base = eng->m_globalObject; - - CREATE_MEMBER(base, memberName, &member, /*flags=*/0); - } - - if (value.isString() && ! value.m_string_value->unique) - eng->newNameId(&value, value.m_string_value->s); - - if (member.isGetterOrSetter()) { - // find and call setter(value) - QScriptValueImpl setter; - if (!member.isSetter()) { - if (!base.m_object_value->findSetter(&member)) { - stackPtr -= 1; - throwError(QLatin1String("no setter defined")); - HandleException(); - } - } - base.get(member, &setter); - - if (!isMemberAssignment) { - // decide the this-object. This is the object that actually - // has the setter (in its prototype chain). - while (!object.resolve(memberName, &member, &base, QScriptValue::ResolvePrototype, QScript::Write)) - object = object.scope(); - if (object.classInfo() == eng->m_class_with) - object = object.prototype(); - } - - value = setter.call(object, QScriptValueImplList() << value); - if (hasUncaughtException()) { - stackPtr -= 1; - Done(); - } - } else { - if (object.classInfo() == eng->m_class_with) - object = object.prototype(); - - if (member.isWritable()) { - if (isMemberAssignment && (base.m_object_value != object.m_object_value)) { - base = object; - CREATE_MEMBER(base, memberName, &member, /*flags=*/0); - } - base.put(member, value); - } else if (member.isUninitializedConst()) { - base.put(member, value); - if (member.isObjectProperty()) { - base.m_object_value->m_members[member.id()] - .unsetFlags(QScript::Member::UninitializedConst); - } - } - if (hasUncaughtException()) { - stackPtr -= 1; - HandleException(); - } - } - } - - *stackPtr = value; - ++iPtr; - } Next(); - - I(BitAnd): - { - qint32 v1 = QScriptEnginePrivate::convertToNativeInt32(stackPtr[-1]); - qint32 v2 = QScriptEnginePrivate::convertToNativeInt32(stackPtr[0]); - *(--stackPtr) = QScriptValueImpl(v1 & v2); - ++iPtr; - } Next(); - - I(BitOr): - { - qint32 v1 = QScriptEnginePrivate::convertToNativeInt32(stackPtr[-1]); - qint32 v2 = QScriptEnginePrivate::convertToNativeInt32(stackPtr[0]); - *(--stackPtr) = QScriptValueImpl(v1 | v2); - ++iPtr; - } Next(); - - I(BitXor): - { - qint32 v1 = QScriptEnginePrivate::convertToNativeInt32(stackPtr[-1]); - qint32 v2 = QScriptEnginePrivate::convertToNativeInt32(stackPtr[0]); - *(--stackPtr) = QScriptValueImpl(v1 ^ v2); - ++iPtr; - } Next(); - - I(BitNot): - { - qint32 v1 = QScriptEnginePrivate::convertToNativeInt32(stackPtr[0]); - *stackPtr = QScriptValueImpl(~v1); - ++iPtr; - } Next(); - - I(Not): - { - bool v1 = QScriptEnginePrivate::convertToNativeBoolean(stackPtr[0]); - *stackPtr = QScriptValueImpl(!v1); - ++iPtr; - } Next(); - - I(LeftShift): - { - qint32 v1 = QScriptEnginePrivate::convertToNativeInt32(stackPtr[-1]); - qint32 v2 = QScriptEnginePrivate::convertToNativeInt32(stackPtr[0]) & 0x1f; - *(--stackPtr) = QScriptValueImpl(v1 << v2); - ++iPtr; - } Next(); - - I(Mod): - { - qsreal v1 = QScriptEnginePrivate::convertToNativeDouble(stackPtr[-1]); - qsreal v2 = QScriptEnginePrivate::convertToNativeDouble(stackPtr[0]); - - *(--stackPtr) = QScriptValueImpl(::fmod(v1, v2)); - ++iPtr; - } Next(); - - I(RightShift): - { - qint32 v1 = QScriptEnginePrivate::convertToNativeInt32(stackPtr[-1]); - quint32 v2 = QScriptEnginePrivate::toUint32 (eng->convertToNativeDouble(stackPtr[0])) & 0x1f; - *(--stackPtr) = QScriptValueImpl(v1 >> v2); - ++iPtr; - } Next(); - - I(URightShift): - { - quint32 v1 = QScriptEnginePrivate::toUint32 (eng->convertToNativeDouble(stackPtr[-1])); - qint32 v2 = QScriptEnginePrivate::convertToNativeInt32(stackPtr[0]) & 0x1f; - *(--stackPtr) = QScriptValueImpl(v1 >> v2); - ++iPtr; - } Next(); - - I(InstanceOf): - { - QScriptValueImpl object = stackPtr[-1]; - QScriptValueImpl ctor = stackPtr[0]; - - if (!ctor.isObject() || !ctor.implementsHasInstance()) { - stackPtr -= 2; - throwTypeError(QLatin1String("invalid 'instanceof' operand")); - HandleException(); - } - - bool result = ctor.hasInstance(object); - if (eng->hasUncaughtException()) { - stackPtr -= 2; - HandleException(); - } - - *(--stackPtr) = QScriptValueImpl(result); - ++iPtr; - } Next(); - - I(In): - { - QScriptValueImpl object = stackPtr[0]; - if (!object.isObject()) { - stackPtr -= 2; - throwTypeError(QLatin1String("invalid 'in' operand")); - HandleException(); - } - QString propertyName = QScriptEnginePrivate::convertToNativeString(stackPtr[-1]); - bool result = object.property(propertyName, QScriptValue::ResolvePrototype).isValid(); // ### hasProperty() - *(--stackPtr) = QScriptValueImpl(result); - ++iPtr; - } Next(); - - I(Add): - { - QScriptValueImpl lhs = eng->toPrimitive(stackPtr[-1], QScriptValueImpl::NoTypeHint); - QScriptValueImpl rhs = eng->toPrimitive(stackPtr[0], QScriptValueImpl::NoTypeHint); - - if (lhs.isString() || rhs.isString()) { - QString tmp = QScriptEnginePrivate::convertToNativeString(lhs); - tmp += QScriptEnginePrivate::convertToNativeString(rhs); - eng->newString(--stackPtr, tmp); - } else { - qsreal tmp = QScriptEnginePrivate::convertToNativeDouble(lhs); - tmp += QScriptEnginePrivate::convertToNativeDouble(rhs); - *(--stackPtr) = QScriptValueImpl(tmp); - } - - ++iPtr; - } Next(); - - I(Div): - { - qsreal v1 = QScriptEnginePrivate::convertToNativeDouble(stackPtr[-1]); - qsreal v2 = QScriptEnginePrivate::convertToNativeDouble(stackPtr[0]); - *(--stackPtr) = QScriptValueImpl(v1 / v2); - ++iPtr; - } Next(); - - I(Equal): - { - QScriptValueImpl v1 = stackPtr[-1]; - QScriptValueImpl v2 = stackPtr[0]; - *(--stackPtr) = QScriptValueImpl(eq_cmp(v1, v2)); - ++iPtr; - } Next(); - - I(GreatOrEqual): - { - QScriptValueImpl v1 = stackPtr[0]; - QScriptValueImpl v2 = stackPtr[-1]; - *(--stackPtr) = QScriptValueImpl(le_cmp(v1, v2)); - ++iPtr; - } Next(); - - I(GreatThan): - { - QScriptValueImpl v1 = stackPtr[0]; - QScriptValueImpl v2 = stackPtr[-1]; - *(--stackPtr) = QScriptValueImpl(lt_cmp(v1, v2)); - ++iPtr; - } Next(); - - I(LessOrEqual): - { - QScriptValueImpl v1 = stackPtr[-1]; - QScriptValueImpl v2 = stackPtr[0]; - *(--stackPtr) = QScriptValueImpl(le_cmp(v1, v2)); - ++iPtr; - } Next(); - - I(LessThan): - { - QScriptValueImpl v1 = stackPtr[-1]; - QScriptValueImpl v2 = stackPtr[0]; - *(--stackPtr) = QScriptValueImpl(lt_cmp(v1, v2)); - ++iPtr; - } Next(); - - I(NotEqual): - { - QScriptValueImpl v1 = stackPtr[-1]; - QScriptValueImpl v2 = stackPtr[0]; - *(--stackPtr) = QScriptValueImpl(!eq_cmp(v1, v2)); - ++iPtr; - } Next(); - - I(Mul): - { - qsreal v1 = QScriptEnginePrivate::convertToNativeDouble(stackPtr[-1]); - qsreal v2 = QScriptEnginePrivate::convertToNativeDouble(stackPtr[0]); - *(--stackPtr) = QScriptValueImpl(v1 * v2); - ++iPtr; - } Next(); - - I(StrictEqual): - { - QScriptValueImpl v1 = stackPtr[-1]; - QScriptValueImpl v2 = stackPtr[0]; - *(--stackPtr) = strict_eq_cmp(v1, v2); - ++iPtr; - } Next(); - - I(StrictNotEqual): - { - QScriptValueImpl v1 = stackPtr[-1]; - QScriptValueImpl v2 = stackPtr[0]; - *(--stackPtr) = ! strict_eq_cmp(v1, v2); - ++iPtr; - } Next(); - - I(Sub): - { - qsreal v1 = QScriptEnginePrivate::convertToNativeDouble(stackPtr[-1]); - qsreal v2 = QScriptEnginePrivate::convertToNativeDouble(stackPtr[0]); - *(--stackPtr) = QScriptValueImpl(v1 - v2); - ++iPtr; - } Next(); - - I(UnaryMinus): - { - qsreal v1 = QScriptEnginePrivate::convertToNativeDouble(*stackPtr); - *stackPtr = QScriptValueImpl(-v1); - ++iPtr; - } Next(); - - I(UnaryPlus): - { - qsreal v1 = QScriptEnginePrivate::convertToNativeDouble(*stackPtr); - *stackPtr = QScriptValueImpl(+v1); - ++iPtr; - } Next(); - - I(Branch): - { - eng->maybeProcessEvents(); - if (hasUncaughtException()) - HandleException(); - if (eng->shouldAbort()) - Abort(); - iPtr += iPtr->operand[0].m_int_value; - } Next(); - - I(BranchFalse): - { - if (! QScriptEnginePrivate::convertToNativeBoolean(*stackPtr--)) - iPtr += iPtr->operand[0].m_int_value; - else - ++iPtr; - } Next(); - - I(BranchTrue): - { - if (eng->convertToNativeBoolean(*stackPtr--)) - iPtr += iPtr->operand[0].m_int_value; - else - ++iPtr; - } Next(); - - I(NewClosure): - { - CHECK_TEMPSTACK(1); - - QScript::AST::FunctionExpression *expr = static_cast<QScript::AST::FunctionExpression *> (iPtr->operand[0].m_ptr_value); - -#ifndef Q_SCRIPT_NO_JOINED_FUNCTION - if (QScript::Code *code = eng->findCode(functionBody)) { - QScriptValueImpl value = code->value; - - if (isValid(value)) { - QScriptObject *instance = value.m_object_value; - Q_ASSERT(instance != 0); - - if (instance->m_scope.m_object_value == m_scopeChain.m_object_value) - { - *++stackPtr = value; - ++iPtr; - Next(); - } - } - } -#endif - - QScript::ScriptFunction *function = new QScript::ScriptFunction(expr, code->astPool); - - // update the formals - for (QScript::AST::FormalParameterList *it = expr->formals; it != 0; it = it->next) { - function->formals.append(it->name); - } - function->length = function->formals.count(); - - eng->functionConstructor->newFunction(++stackPtr, function); - - QScriptObject *instance = stackPtr->m_object_value; - // initialize [[scope]] - instance->m_scope = m_scopeChain; - - // create and initialize `prototype' - QScriptValueImpl proto; - eng->objectConstructor->newObject(&proto); - - QScript::Member member; - CREATE_MEMBER(proto, eng->idTable()->id_constructor, &member, - QScriptValue::Undeletable - | QScriptValue::SkipInEnumeration); - proto.put(member, *stackPtr); - - stackPtr->createMember(eng->idTable()->id_prototype, &member, - QScriptValue::Undeletable); - stackPtr->put(member, proto); - - ++iPtr; - } Next(); - - I(Incr): - { - if (! stackPtr[0].isReference()) { - stackPtr -= 1; - throwSyntaxError(QLatin1String("invalid increment operand")); - HandleException(); - } - - BEGIN_PREFIX_OPERATOR - - qsreal x = QScriptEnginePrivate::convertToNativeDouble(value); - value = QScriptValueImpl(x + 1); - - END_PREFIX_OPERATOR - } Next(); - - I(Decr): - { - if (! stackPtr[0].isReference()) { - stackPtr -= 1; - throwSyntaxError(QLatin1String("invalid decrement operand")); - HandleException(); - } - - BEGIN_PREFIX_OPERATOR - - qsreal x = QScriptEnginePrivate::convertToNativeDouble(value); - value = QScriptValueImpl(x - 1); - - END_PREFIX_OPERATOR - } Next(); - - I(PostIncr): - { - if (! stackPtr[0].isReference()) { - stackPtr -= 1; - throwSyntaxError(QLatin1String("invalid increment operand")); - HandleException(); - } - - QScriptValue::ResolveFlags mode; - mode = QScriptValue::ResolveFlags(stackPtr[0].m_int_value) - | QScriptValue::ResolvePrototype; - - --stackPtr; - - QScriptValueImpl object = eng->toObject(stackPtr[-1]); - if (!object.isObject()) { - stackPtr -= 2; - throwTypeError(QLatin1String("not an object")); - HandleException(); - } - - QScriptNameIdImpl *memberName = 0; - if (stackPtr[0].isString() && stackPtr[0].m_string_value->unique) - memberName = stackPtr[0].m_string_value; - else - memberName = eng->nameId(stackPtr[0].toString(), /*persistent=*/false); - - QScript::Member member; - QScriptValueImpl base; - QScriptValueImpl value; - QScriptObject *instance = object.m_object_value; - const bool isMemberAssignment = (instance != m_scopeChain.m_object_value); - if (instance->findMember(memberName, &member)) { - if (!member.isGetterOrSetter()) { - QScriptValueImpl &r = instance->reference(member); - if (r.isNumber()) { - *(--stackPtr) = QScriptValueImpl(r.m_number_value); - r.incr(); - ++iPtr; - Next(); - } - } - base = object; - } else if (!object.resolve_helper(memberName, &member, &base, mode, QScript::ReadWrite)) { - if (!isMemberAssignment) { - stackPtr -= 2; - throwNotDefined(memberName); - HandleException(); - } - base = object; - CREATE_MEMBER(base, memberName, &member, /*flags=*/0); - base.put(member, undefined); - } - - QScriptValueImpl getter; - QScriptValueImpl setter; - base.get(member, &value); - if (hasUncaughtException()) { - stackPtr -= 2; - HandleException(); - } else if (member.isGetterOrSetter()) { - if (member.isGetter()) { - getter = value; - if (!member.isSetter() && !base.m_object_value->findSetter(&member)) { - stackPtr -= 2; - throwError(QLatin1String("No setter defined")); - HandleException(); - } - base.get(member, &setter); - } else { - setter = value; - QScript::Member tmp = member; - if (!base.m_object_value->findGetter(&member)) { - stackPtr -= 2; - throwError(QLatin1String("No getter defined")); - HandleException(); - } - base.get(member, &getter); - member = tmp; - } - value = getter.call(object); - if (hasUncaughtException()) { - stackPtr -= 2; - Done(); - } - } - - qsreal x = QScriptEnginePrivate::convertToNativeDouble(value); - - value = QScriptValueImpl(x + 1); - - if (member.isSetter()) { - setter.call(object, QScriptValueImplList() << value); - if (hasUncaughtException()) { - stackPtr -= 2; - Done(); - } - } else { - if (isMemberAssignment && (base.m_object_value != object.m_object_value)) { - base = object; - CREATE_MEMBER(base, memberName, &member, /*flags=*/0); - } - if (member.isWritable()) { - base.put(member, value); - if (hasUncaughtException()) { - stackPtr -= 2; - HandleException(); - } - } - } - - *(--stackPtr) = QScriptValueImpl(x); - - ++iPtr; - } Next(); - - I(PostDecr): - { - // ### most of the code is duplicated from PostIncr -- try to merge - if (! stackPtr[0].isReference()) { - stackPtr -= 1; - throwSyntaxError(QLatin1String("invalid decrement operand")); - HandleException(); - } - - QScriptValue::ResolveFlags mode = QScriptValue::ResolveFlags(stackPtr[0].m_int_value) - | QScriptValue::ResolvePrototype; - - --stackPtr; - - QScriptValueImpl object = eng->toObject(stackPtr[-1]); - if (!object.isObject()) { - stackPtr -= 2; - throwTypeError(QLatin1String("not an object")); - HandleException(); - } - - QScriptNameIdImpl *memberName = 0; - if (stackPtr[0].isString() && stackPtr[0].m_string_value->unique) - memberName = stackPtr[0].m_string_value; - else - memberName = eng->nameId(stackPtr[0].toString(), /*persistent=*/false); - - QScript::Member member; - QScriptValueImpl base; - QScriptValueImpl value; - QScriptObject *instance = object.m_object_value; - const bool isMemberAssignment = (instance != m_scopeChain.m_object_value); - if (instance->findMember(memberName, &member)) { - if (!member.isGetterOrSetter()) { - QScriptValueImpl &r = instance->reference(member); - if (r.isNumber()) { - *(--stackPtr) = QScriptValueImpl(r.m_number_value); - r.decr(); - ++iPtr; - Next(); - } - } - base = object; - } else if (! object.resolve_helper(memberName, &member, &base, mode, QScript::ReadWrite)) { - if (!isMemberAssignment) { - stackPtr -= 2; - throwNotDefined(memberName); - HandleException(); - } - base = object; - CREATE_MEMBER(base, memberName, &member, /*flags=*/0); - base.put(member, undefined); - } - - QScriptValueImpl getter; - QScriptValueImpl setter; - base.get(member, &value); - if (hasUncaughtException()) { - stackPtr -= 2; - HandleException(); - } else if (member.isGetterOrSetter()) { - if (member.isGetter()) { - getter = value; - if (!member.isSetter() && !base.m_object_value->findSetter(&member)) { - stackPtr -= 2; - throwError(QLatin1String("No setter defined")); - HandleException(); - } - base.get(member, &setter); - } else { - setter = value; - QScript::Member tmp = member; - if (!base.m_object_value->findGetter(&member)) { - stackPtr -= 2; - throwError(QLatin1String("No getter defined")); - HandleException(); - } - base.get(member, &getter); - member = tmp; - } - value = getter.call(object); - if (hasUncaughtException()) { - stackPtr -= 2; - Done(); - } - } - - qsreal x = QScriptEnginePrivate::convertToNativeDouble(value); - - value = QScriptValueImpl(x - 1); - - if (member.isSetter()) { - setter.call(object, QScriptValueImplList() << value); - if (hasUncaughtException()) { - stackPtr -= 2; - Done(); - } - } else { - if (isMemberAssignment && (base.m_object_value != object.m_object_value)) { - base = object; - CREATE_MEMBER(base, memberName, &member, /*flags=*/0); - } - if (member.isWritable()) { - base.put(member, value); - if (hasUncaughtException()) { - stackPtr -= 2; - HandleException(); - } - } - } - - *(--stackPtr) = QScriptValueImpl(x); - - ++iPtr; - } Next(); - - I(InplaceAdd): - { - BEGIN_INPLACE_OPERATOR - - lhs = eng->toPrimitive(lhs); - rhs = eng->toPrimitive(rhs); - if (lhs.isString() || rhs.isString()) { - if (lhs.isString() && !lhs.m_string_value->unique) { - lhs.m_string_value->s += QScriptEnginePrivate::convertToNativeString(rhs); - stackPtr -= 3; - *stackPtr = lhs; - } else { - QString tmp = QScriptEnginePrivate::convertToNativeString(lhs); - tmp += QScriptEnginePrivate::convertToNativeString(rhs); - stackPtr -= 3; - eng->newString(stackPtr, tmp); - } - } else { - qsreal tmp = QScriptEnginePrivate::convertToNativeDouble(lhs); - tmp += QScriptEnginePrivate::convertToNativeDouble(rhs); - stackPtr -= 3; - *stackPtr = QScriptValueImpl(tmp); - } - - END_INPLACE_OPERATOR - } Next(); - - I(InplaceSub): - { - BEGIN_INPLACE_OPERATOR - - qsreal v1 = QScriptEnginePrivate::convertToNativeDouble(lhs); - qsreal v2 = QScriptEnginePrivate::convertToNativeDouble(rhs); - - stackPtr -= 3; - *stackPtr = QScriptValueImpl(v1 - v2); - - END_INPLACE_OPERATOR - } Next(); - - I(InplaceAnd): - { - BEGIN_INPLACE_OPERATOR - - qint32 v1 = QScriptEnginePrivate::convertToNativeInt32(lhs); - qint32 v2 = QScriptEnginePrivate::convertToNativeInt32(rhs); - - stackPtr -= 3; - *stackPtr = QScriptValueImpl(v1 & v2); - - END_INPLACE_OPERATOR - } Next(); - - I(InplaceDiv): - { - BEGIN_INPLACE_OPERATOR - - qsreal v1 = QScriptEnginePrivate::convertToNativeDouble(lhs); - qsreal v2 = QScriptEnginePrivate::convertToNativeDouble(rhs); - - stackPtr -= 3; - *stackPtr = QScriptValueImpl(v1 / v2); - - END_INPLACE_OPERATOR - } Next(); - - I(InplaceLeftShift): - { - BEGIN_INPLACE_OPERATOR - - qint32 v1 = QScriptEnginePrivate::convertToNativeInt32(lhs); - qint32 v2 = QScriptEnginePrivate::convertToNativeInt32(rhs); - - stackPtr -= 3; - *stackPtr = QScriptValueImpl(v1 << v2); - - END_INPLACE_OPERATOR - } Next(); - - I(InplaceMod): - { - BEGIN_INPLACE_OPERATOR - - qsreal v1 = QScriptEnginePrivate::convertToNativeDouble(lhs); - qsreal v2 = QScriptEnginePrivate::convertToNativeDouble(rhs); - - stackPtr -= 3; - *stackPtr = QScriptValueImpl(::fmod (v1, v2)); - - END_INPLACE_OPERATOR - } Next(); - - I(InplaceMul): - { - BEGIN_INPLACE_OPERATOR - - qsreal v1 = QScriptEnginePrivate::convertToNativeDouble(lhs); - qsreal v2 = QScriptEnginePrivate::convertToNativeDouble(rhs); - - stackPtr -= 3; - *stackPtr = QScriptValueImpl(v1 * v2); - - END_INPLACE_OPERATOR - } Next(); - - I(InplaceOr): - { - BEGIN_INPLACE_OPERATOR - - qint32 v1 = QScriptEnginePrivate::convertToNativeInt32(lhs); - qint32 v2 = QScriptEnginePrivate::convertToNativeInt32(rhs); - - stackPtr -= 3; - *stackPtr = QScriptValueImpl(v1 | v2); - - END_INPLACE_OPERATOR - } Next(); - - I(InplaceRightShift): - { - BEGIN_INPLACE_OPERATOR - - qint32 v1 = QScriptEnginePrivate::convertToNativeInt32(lhs); - qint32 v2 = QScriptEnginePrivate::convertToNativeInt32(rhs); - - stackPtr -= 3; - *stackPtr = QScriptValueImpl(v1 >> v2); - - END_INPLACE_OPERATOR - } Next(); - - I(InplaceURightShift): - { - BEGIN_INPLACE_OPERATOR - - quint32 v1 = QScriptEnginePrivate::toUint32 (eng->convertToNativeDouble(lhs)); - qint32 v2 = QScriptEnginePrivate::convertToNativeInt32(rhs); - - stackPtr -= 3; - *stackPtr = QScriptValueImpl(v1 >> v2); - - END_INPLACE_OPERATOR - } Next(); - - I(InplaceXor): - { - BEGIN_INPLACE_OPERATOR - - qint32 v1 = QScriptEnginePrivate::convertToNativeInt32(lhs); - qint32 v2 = QScriptEnginePrivate::convertToNativeInt32(rhs); - - stackPtr -= 3; - *stackPtr = QScriptValueImpl(v1 ^ v2); - - END_INPLACE_OPERATOR - } Next(); - - I(MakeReference): - { - CHECK_TEMPSTACK(1); - eng->newReference(++stackPtr, QScriptValue::ResolveLocal); - ++iPtr; - } Next(); - - I(TypeOf): - { - QScriptValueImpl value; - - bool isReference = stackPtr[0].isReference(); - - if (! isReference) { // we have a value - value = stackPtr[0]; - } else if (resolveField(eng, &stackPtr[-1], &value)) { - stackPtr -= 2; - if (hasUncaughtException()) { - stackPtr -= 1; - HandleException(); - } - } else { - value = undefined; - stackPtr -= 2; - } - - QString typeName; - - switch (value.type()) { - case QScript::InvalidType: - typeName = QLatin1String("invalid"); - break; - - case QScript::UndefinedType: - typeName = QLatin1String("undefined"); - break; - - case QScript::NullType: - typeName = QLatin1String("object"); - break; - - case QScript::BooleanType: - typeName = QLatin1String("boolean"); - break; - - case QScript::IntegerType: - case QScript::NumberType: - typeName = QLatin1String("number"); - break; - - case QScript::StringType: - case QScript::LazyStringType: - typeName = QLatin1String("string"); - break; - - case QScript::ReferenceType: - typeName = QLatin1String("reference"); - break; - - case QScript::PointerType: - typeName = QLatin1String("pointer"); - break; - - case QScript::ObjectType: - if (value.isFunction()) - typeName = QLatin1String("function"); - else - typeName = QLatin1String("object"); - break; - } - - eng->newString(stackPtr, typeName); - ++iPtr; - } Next(); - - I(Line): - { - eng->maybeGC(); - eng->maybeProcessEvents(); - if (hasUncaughtException()) - HandleException(); - if (eng->shouldAbort()) - Abort(); - currentLine = iPtr->operand[0].m_int_value; - currentColumn = iPtr->operand[1].m_int_value; -#ifndef Q_SCRIPT_NO_EVENT_NOTIFY - if (eng->shouldNotify()) { - eng->notifyPositionChange(this); - if (hasUncaughtException()) - HandleException(); - if (eng->shouldAbort()) - Abort(); - } -#endif - ++iPtr; - } Next(); - - I(Delete): - { - bool result; - if (! stackPtr[0].isReference()) - result = true; - - else { - QScriptValueImpl object = stackPtr[-2]; - if (!object.isObject()) - object = eng->toObject(object); - - QScriptNameIdImpl *nameId = 0; - if (stackPtr[-1].isString() && stackPtr[-1].m_string_value->unique) { - nameId = stackPtr[-1].m_string_value; - } else { - nameId = eng->nameId(QScriptEnginePrivate::convertToNativeString(stackPtr[-1]), - /*persistent=*/false); - } - if (object.classInfo() == eng->m_class_with) - object = object.prototype(); - result = object.deleteProperty(nameId, QScriptValue::ResolveScope); - stackPtr -= 2; - } - - *stackPtr = QScriptValueImpl(result); - - ++iPtr; - } Next(); - - - I(NewEnumeration): { - QScriptValueImpl e; - QScriptValueImpl object = eng->toObject(stackPtr[0]); - eng->enumerationConstructor->newEnumeration(&e, object); - *stackPtr = e; - ++iPtr; - } Next(); - - - I(ToFirstElement): { - QScript::Ext::Enumeration::Instance *e = eng->enumerationConstructor->get(stackPtr[0]); - Q_ASSERT(e != 0); - e->toFront(); - --stackPtr; - ++iPtr; - } Next(); - - - I(HasNextElement): { - QScript::Ext::Enumeration::Instance *e = eng->enumerationConstructor->get(stackPtr[0]); - Q_ASSERT(e != 0); - e->hasNext(this, stackPtr); - ++iPtr; - } Next(); - - - I(NextElement): { - // the Enumeration should be located below the result of I(Resolve) - if (! stackPtr[0].isReference()) { - throwTypeError(QLatin1String("QScript.VM.NextElement")); - HandleException(); - } - - QScript::Ext::Enumeration::Instance *e = eng->enumerationConstructor->get(stackPtr[-3]); - if (! e) { - throwTypeError(QLatin1String("QScript.VM.NextElement")); - HandleException(); - } - e->next(this, ++stackPtr); - ++iPtr; - } Next(); - - - I(Pop): - { - --stackPtr; - ++iPtr; - } Next(); - - I(Sync): - { - m_result = *stackPtr; - --stackPtr; - ++iPtr; - } Next(); - - I(Throw): - { - Q_ASSERT(stackPtr->isValid()); - m_result = *stackPtr--; - if (!m_result.isError() && !exceptionHandlerContext()) - eng->m_exceptionBacktrace = backtrace(); - m_state = QScriptContext::ExceptionState; -#ifndef Q_SCRIPT_NO_EVENT_NOTIFY - eng->notifyException(this); -#endif - } HandleException(); - - I(Ret): - { - Q_ASSERT(stackPtr->isValid()); - m_result = *stackPtr--; - ++iPtr; - } Done(); - - I(Halt): - { - ++iPtr; - } Done(); - - I(EnterWith): - { - QScriptValueImpl object = eng->toObject(*stackPtr--); - if (! object.isValid()) { - throwTypeError(QLatin1String("value has no properties")); - HandleException(); - } - QScriptValueImpl withObject; - eng->newObject(&withObject, object, eng->m_class_with); - withObject.m_object_value->m_scope = m_scopeChain; - m_scopeChain = withObject; - ++iPtr; - } Next(); - - I(LeaveWith): - { - QScriptValueImpl withObject = m_scopeChain; - m_scopeChain = withObject.m_object_value->m_scope; - ++iPtr; - } Next(); - - I(BeginCatch): - { - // result contains the thrown object - QScriptValueImpl object; - eng->newObject(&object, undefined); // ### prototype - QScript::Member member; - CREATE_MEMBER(object, iPtr->operand[0].m_string_value, &member, /*flags=*/0); - object.put(member, m_result); - // make catch-object head of scopechain - object.m_object_value->m_scope = m_scopeChain; - m_scopeChain = object; - - catching = true; - ++iPtr; - } Next(); - - I(EndCatch): - { - // remove catch-object from scopechain - QScriptValueImpl object = m_scopeChain; - m_scopeChain = object.m_object_value->m_scope; - - catching = false; - ++iPtr; - } Next(); - - I(Debugger): - { -#ifndef Q_SCRIPT_NO_EVENT_NOTIFY - eng->notifyDebugger(this); -#endif - ++iPtr; - } Next(); - -#ifndef Q_SCRIPT_DIRECT_CODE - I(Dummy): - { ; } - - } // end switch -#endif - -Lhandle_exception: - errorLineNumber = currentLine; - -Ldone: - Q_ASSERT(m_result.isValid()); - - if (m_state == QScriptContext::ExceptionState) { - if (catching) { - // exception thrown in catch -- clean up scopechain - QScriptValueImpl object = m_scopeChain; - m_scopeChain = object.m_object_value->m_scope; - catching = false; - } - - // see if we have an exception handler in this context - const QScriptInstruction *exPtr = findExceptionHandler(iPtr); - if (exPtr) { - if (m_scopeChain.classInfo() == eng->m_class_with) { - // clean up effects of with-statements if necessary - int withLevel = 0; - for (++iPtr; iPtr != exPtr; ++iPtr) { - if (iPtr->op == QScriptInstruction::OP_EnterWith) { - ++withLevel; - } else if (iPtr->op == QScriptInstruction::OP_LeaveWith) { - --withLevel; - if (withLevel < 0) { - QScriptValueImpl withObject = m_scopeChain; - m_scopeChain = withObject.m_object_value->m_scope; - } - } - } - } else { - iPtr = exPtr; - } - // go to the handler - recover(); -#ifndef Q_SCRIPT_NO_EVENT_NOTIFY - eng->notifyExceptionCatch(this); -#endif - goto Ltop; - } else { - if (!parentContext()) { - // pop all the top-level with-objects - while ((m_scopeChain.classInfo() == eng->m_class_with) - && !m_scopeChain.internalValue().isValid()) { - QScriptValueImpl withObject = m_scopeChain; - m_scopeChain = withObject.m_object_value->m_scope; - } - } - } - } - -Labort: -#ifndef Q_SCRIPT_NO_EVENT_NOTIFY - eng->notifyFunctionExit(this); -#endif - - eng->maybeGC(); - - currentLine = oldCurrentLine; - currentColumn = oldCurrentColumn; - m_code = oldCode; - - eng->m_evaluating = wasEvaluating; -} - -QScriptValueImpl QScriptContextPrivate::throwError(QScriptContext::Error error, const QString &text) -{ - QScriptEnginePrivate *eng_p = engine(); - QScript::Ecma::Error *ctor = eng_p->errorConstructor; - m_result.invalidate(); - switch (error) { - case QScriptContext::ReferenceError: - ctor->newReferenceError(&m_result, text); - break; - case QScriptContext::SyntaxError: - ctor->newSyntaxError(&m_result, text); - break; - case QScriptContext::TypeError: - ctor->newTypeError(&m_result, text); - break; - case QScriptContext::RangeError: - ctor->newRangeError(&m_result, text); - break; - case QScriptContext::URIError: - ctor->newURIError(&m_result, text); - break; - case QScriptContext::UnknownError: - default: - ctor->newError(&m_result, text); - } - setDebugInformation(&m_result); - m_state = QScriptContext::ExceptionState; -#ifndef Q_SCRIPT_NO_EVENT_NOTIFY - eng_p->notifyException(this); -#endif - return m_result; -} - -#ifndef Q_SCRIPT_NO_EVENT_NOTIFY -qint64 QScriptContextPrivate::scriptId() const -{ - if (!m_code) - return -1; - return m_code->astPool->id(); -} -#endif - -QString QScriptContextPrivate::fileName() const -{ - if (!m_code) - return QString(); - return m_code->astPool->fileName(); -} - -QString QScriptContextPrivate::functionName() const -{ - if (!m_callee.isValid()) - return QString(); - QScriptFunction *fun = m_callee.toFunction(); - if (fun) - return fun->functionName(); - return QString(); -} - -void QScriptContextPrivate::setDebugInformation(QScriptValueImpl *error) const -{ - QScriptEnginePrivate *eng_p = engine(); - error->setProperty(QLatin1String("lineNumber"), QScriptValueImpl(currentLine)); - if (!fileName().isEmpty()) - error->setProperty(QLatin1String("fileName"), QScriptValueImpl(eng_p, fileName())); - - const QScriptContextPrivate *ctx = this; - QScriptValueImpl stackArray = eng_p->newArray(); - int i = 0; - while (ctx) { - QScriptValueImpl obj = eng_p->newObject(); - obj.setProperty(QLatin1String("frame"), ctx->activationObject()); - obj.setProperty(QLatin1String("lineNumber"), QScriptValueImpl(ctx->currentLine)); - if (!ctx->fileName().isEmpty()) - obj.setProperty(QLatin1String("fileName"), QScriptValueImpl(eng_p, ctx->fileName())); - if (!ctx->functionName().isEmpty()) - obj.setProperty(QLatin1String("functionName"), QScriptValueImpl(eng_p, ctx->functionName())); - stackArray.setProperty(i, obj); - ctx = ctx->parentContext(); - ++i; - } - error->setProperty(QLatin1String("stack"), stackArray); -} - -QStringList QScriptContextPrivate::backtrace() const -{ - QStringList result; - const QScriptContextPrivate *ctx = this; - while (ctx) { - QString s; - QString functionName = ctx->functionName(); - if (!functionName.isEmpty()) - s += functionName; - else { - if (ctx->parentContext()) { - if (ctx->callee().isFunction() - && ctx->callee().toFunction()->type() != QScriptFunction::Script) { - s += QLatin1String("<native>"); - } else { - s += QLatin1String("<anonymous>"); - } - } else { - s += QLatin1String("<global>"); - } - } - s += QLatin1Char('('); - for (int i = 0; i < ctx->argc; ++i) { - if (i > 0) - s += QLatin1Char(','); - QScriptValueImpl arg = ctx->args[i]; - if (arg.isObject()) - s += QLatin1String("[object Object]"); // don't do a function call - else - s += arg.toString(); - } - s += QLatin1String(")@"); - s += ctx->fileName(); - s += QString::fromLatin1(":%0").arg(ctx->currentLine); - result.append(s); - ctx = ctx->parentContext(); - } - return result; -} - -QScriptValueImpl QScriptContextPrivate::throwError(const QString &text) -{ - return throwError(QScriptContext::UnknownError, text); -} - -QScriptValueImpl QScriptContextPrivate::throwNotImplemented(const QString &name) -{ - return throwTypeError(QString::fromUtf8("%1 is not implemented").arg(name)); -} - -QScriptValueImpl QScriptContextPrivate::throwNotDefined(const QString &name) -{ - return throwError(QScriptContext::ReferenceError, - QString::fromUtf8("%1 is not defined").arg(name)); -} - -QScriptValueImpl QScriptContextPrivate::throwNotDefined(QScriptNameIdImpl *nameId) -{ - return throwNotDefined(QScriptEnginePrivate::toString(nameId)); -} - -bool QScriptContextPrivate::eq_cmp_helper(QScriptValueImpl lhs, QScriptValueImpl rhs) -{ - if (lhs.isNull() && rhs.isUndefined()) - return true; - - else if (lhs.isUndefined() && rhs.isNull()) - return true; - - else if (isNumerical(lhs) && rhs.isString()) - return QScriptEnginePrivate::convertToNativeDouble(lhs) == QScriptEnginePrivate::convertToNativeDouble(rhs); - - else if (lhs.isString() && isNumerical(rhs)) - return QScriptEnginePrivate::convertToNativeDouble(lhs) == QScriptEnginePrivate::convertToNativeDouble(rhs); - - else if (lhs.isBoolean()) - return eq_cmp(QScriptValueImpl(QScriptEnginePrivate::convertToNativeDouble(lhs)), rhs); - - else if (rhs.isBoolean()) - return eq_cmp(lhs, QScriptValueImpl(QScriptEnginePrivate::convertToNativeDouble(rhs))); - - else if (lhs.isObject() && ! rhs.isNull()) { - lhs = lhs.engine()->toPrimitive(lhs); - - if (lhs.isValid() && ! lhs.isObject()) - return eq_cmp(lhs, rhs); - } - - else if (rhs.isObject() && ! lhs.isNull()) { - rhs = rhs.engine()->toPrimitive(rhs); - - if (rhs.isValid() && ! rhs.isObject()) - return eq_cmp(lhs, rhs); - } - - return false; -} - -#if defined(Q_CC_GNU) && __GNUC__ <= 3 -bool QScriptContextPrivate::lt_cmp(QScriptValueImpl lhs, QScriptValueImpl rhs) -{ - if (lhs.type() == rhs.type()) { - switch (lhs.type()) { - case QScript::InvalidType: - case QScript::UndefinedType: - case QScript::NullType: - return false; - - case QScript::NumberType: - return lhs.m_number_value < rhs.m_number_value; - - case QScript::IntegerType: - return lhs.m_int_value < rhs.m_int_value; - - case QScript::BooleanType: - return lhs.m_bool_value < rhs.m_bool_value; - - default: - break; - } // switch - } -#else -bool QScriptContextPrivate::lt_cmp_helper(QScriptValueImpl lhs, QScriptValueImpl rhs) -{ -#endif - if ((lhs.type() == rhs.type()) && (lhs.type() == QScript::StringType)) - return lhs.m_string_value->s < rhs.m_string_value->s; - - if (lhs.isObject()) - lhs = lhs.engine()->toPrimitive(lhs, QScriptValueImpl::NumberTypeHint); - - if (rhs.isObject()) - rhs = rhs.engine()->toPrimitive(rhs, QScriptValueImpl::NumberTypeHint); - - if (lhs.isString() && rhs.isString()) - return QScriptEnginePrivate::convertToNativeString(lhs) < QScriptEnginePrivate::convertToNativeString(rhs); - - qsreal n1 = QScriptEnginePrivate::convertToNativeDouble(lhs); - qsreal n2 = QScriptEnginePrivate::convertToNativeDouble(rhs); -#if defined Q_CC_MSVC && !defined Q_CC_MSVC_NET - if (qIsNaN(n1) || qIsNaN(n2)) - return false; -#endif - return n1 < n2; -} - -bool QScriptContextPrivate::le_cmp_helper(QScriptValueImpl lhs, QScriptValueImpl rhs) -{ - if ((lhs.type() == rhs.type()) && (lhs.type() == QScript::StringType)) - return lhs.m_string_value->s <= rhs.m_string_value->s; - - if (lhs.isObject()) - lhs = lhs.engine()->toPrimitive(lhs, QScriptValueImpl::NumberTypeHint); - - if (rhs.isObject()) - rhs = rhs.engine()->toPrimitive(rhs, QScriptValueImpl::NumberTypeHint); - - if (lhs.isString() && rhs.isString()) - return QScriptEnginePrivate::convertToNativeString(lhs) <= QScriptEnginePrivate::convertToNativeString(rhs); - - qsreal n1 = QScriptEnginePrivate::convertToNativeDouble(lhs); - qsreal n2 = QScriptEnginePrivate::convertToNativeDouble(rhs); - return n1 <= n2; -} - -const QScriptInstruction *QScriptContextPrivate::findExceptionHandler( - const QScriptInstruction *ip) const -{ - Q_ASSERT(m_code); - int offset = ip - m_code->firstInstruction; - for (int i = 0; i < m_code->exceptionHandlers.count(); ++i) { - QScript::ExceptionHandlerDescriptor e = m_code->exceptionHandlers.at(i); - if (offset >= e.startInstruction() && offset <= e.endInstruction()) { - return m_code->firstInstruction + e.handlerInstruction(); - } - } - return 0; -} - -const QScriptInstruction *QScriptContextPrivate::findExceptionHandlerRecursive( - const QScriptInstruction *ip, QScriptContextPrivate **handlerContext) const -{ - const QScriptContextPrivate *ctx = this; - const QScriptInstruction *iip = ip; - while (ctx) { - if (ctx->m_code) { - const QScriptInstruction *ep = ctx->findExceptionHandler(iip); - if (ep) { - Q_ASSERT(handlerContext); - *handlerContext = const_cast<QScriptContextPrivate*>(ctx); - return ep; - } - } - ctx = ctx->parentContext(); - if (ctx) - iip = ctx->iPtr; - } - return 0; -} - -/*! - Requires that iPtr in current context is in sync -*/ -QScriptContextPrivate *QScriptContextPrivate::exceptionHandlerContext() const -{ - QScriptContextPrivate *handlerContext; - if (findExceptionHandlerRecursive(iPtr, &handlerContext)) - return handlerContext; - return 0; -} - -QScriptContext *QScriptContextPrivate::get(QScriptContextPrivate *d) -{ - if (d) - return d->q_func(); - return 0; -} - -QT_END_NAMESPACE - -#endif // QT_NO_SCRIPT |