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/****************************************************************************
**
** Copyright (C) 2021 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QtQml module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:COMM$
**
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** $QT_END_LICENSE$
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
****************************************************************************/
#include "qv4function_p.h"
#include "qv4functionobject_p.h"
#include "qv4managed_p.h"
#include "qv4string_p.h"
#include "qv4value_p.h"
#include "qv4engine_p.h"
#include "qv4lookup_p.h"
#include <private/qv4mm_p.h>
#include <private/qv4identifiertable_p.h>
#include <private/qv4functiontable_p.h>
#include <assembler/MacroAssemblerCodeRef.h>
#include <private/qv4vme_moth_p.h>
#include <private/qqmlglobal_p.h>
QT_BEGIN_NAMESPACE
using namespace QV4;
ReturnedValue Function::call(const Value *thisObject, const Value *argv, int argc, const ExecutionContext *context) {
ExecutionEngine *engine = context->engine();
CppStackFrame frame;
frame.init(engine, this, argv, argc);
frame.setupJSFrame(engine->jsStackTop, Value::undefinedValue(), context->d(),
thisObject ? *thisObject : Value::undefinedValue(),
Value::undefinedValue());
frame.push();
engine->jsStackTop += frame.requiredJSStackFrameSize();
ReturnedValue result = Moth::VME::exec(&frame, engine);
frame.pop();
return result;
}
Function *Function::create(ExecutionEngine *engine, ExecutableCompilationUnit *unit,
const CompiledData::Function *function)
{
return new Function(engine, unit, function);
}
void Function::destroy()
{
delete this;
}
Function::Function(ExecutionEngine *engine, ExecutableCompilationUnit *unit,
const CompiledData::Function *function)
: FunctionData(unit)
, compiledFunction(function)
, codeData(function->code())
, jittedCode(nullptr)
, codeRef(nullptr)
{
Scope scope(engine);
Scoped<InternalClass> ic(scope, engine->internalClasses(EngineBase::Class_CallContext));
// first locals
const quint32_le *localsIndices = compiledFunction->localsTable();
for (quint32 i = 0; i < compiledFunction->nLocals; ++i)
ic = ic->addMember(engine->identifierTable->asPropertyKey(compilationUnit->runtimeStrings[localsIndices[i]]), Attr_NotConfigurable);
const CompiledData::Parameter *formalsIndices = compiledFunction->formalsTable();
for (quint32 i = 0; i < compiledFunction->nFormals; ++i)
ic = ic->addMember(engine->identifierTable->asPropertyKey(compilationUnit->runtimeStrings[formalsIndices[i].nameIndex]), Attr_NotConfigurable);
internalClass = ic->d();
nFormals = compiledFunction->nFormals;
}
Function::~Function()
{
if (codeRef) {
destroyFunctionTable(this, codeRef);
delete codeRef;
}
}
void Function::updateInternalClass(ExecutionEngine *engine, const QList<QByteArray> ¶meters)
{
QStringList parameterNames;
// Resolve duplicate parameter names:
for (int i = 0, ei = parameters.count(); i != ei; ++i) {
const QByteArray ¶m = parameters.at(i);
int duplicate = -1;
for (int j = i - 1; j >= 0; --j) {
const QByteArray &prevParam = parameters.at(j);
if (param == prevParam) {
duplicate = j;
break;
}
}
if (duplicate == -1) {
parameterNames.append(QString::fromUtf8(param));
} else {
const QString &dup = parameterNames[duplicate];
parameterNames.append(dup);
parameterNames[duplicate] =
QString(0xfffe) + QString::number(duplicate) + dup;
}
}
internalClass = engine->internalClasses(EngineBase::Class_CallContext);
// first locals
const quint32_le *localsIndices = compiledFunction->localsTable();
for (quint32 i = 0; i < compiledFunction->nLocals; ++i) {
internalClass = internalClass->addMember(
engine->identifierTable->asPropertyKey(compilationUnit->runtimeStrings[localsIndices[i]]),
Attr_NotConfigurable);
}
Scope scope(engine);
ScopedString arg(scope);
for (const QString ¶meterName : parameterNames) {
arg = engine->newIdentifier(parameterName);
internalClass = internalClass->addMember(arg->propertyKey(), Attr_NotConfigurable);
}
nFormals = parameters.size();
}
QString Function::prettyName(const Function *function, const void *code)
{
QString prettyName = function ? function->name()->toQString() : QString();
if (prettyName.isEmpty()) {
prettyName = QString::number(reinterpret_cast<quintptr>(code), 16);
prettyName.prepend(QLatin1String("QV4::Function(0x"));
prettyName.append(QLatin1Char(')'));
}
return prettyName;
}
QQmlSourceLocation Function::sourceLocation() const
{
return QQmlSourceLocation(sourceFile(), compiledFunction->location.line, compiledFunction->location.column);
}
QT_END_NAMESPACE
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