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#include "qv4function_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>

QT_BEGIN_NAMESPACE

using namespace QV4;

Function::Function(ExecutionEngine *engine, CompiledData::CompilationUnit *unit, const CompiledData::Function *function,
                   ReturnedValue (*codePtr)(ExecutionEngine *, const uchar *))
        : compiledFunction(function)
        , compilationUnit(unit)
        , code(codePtr)
        , codeData(0)
{
    Q_UNUSED(engine);

    internalClass = engine->emptyClass;
    const quint32 *formalsIndices = compiledFunction->formalsTable();
    // iterate backwards, so we get the right ordering for duplicate names
    Scope scope(engine);
    ScopedString arg(scope);
    for (int i = static_cast<int>(compiledFunction->nFormals - 1); i >= 0; --i) {
        arg = compilationUnit->runtimeStrings[formalsIndices[i]];
        while (1) {
            InternalClass *newClass = internalClass->addMember(arg, Attr_NotConfigurable);
            if (newClass != internalClass) {
                internalClass = newClass;
                break;
            }
            // duplicate arguments, need some trick to store them
            MemoryManager *mm = engine->memoryManager;
            arg = mm->alloc<String>(mm, arg->d(), engine->newString(QString(0xfffe)));
        }
    }
    nFormals = compiledFunction->nFormals;

    const quint32 *localsIndices = compiledFunction->localsTable();
    for (quint32 i = 0; i < compiledFunction->nLocals; ++i)
        internalClass = internalClass->addMember(compilationUnit->runtimeStrings[localsIndices[i]]->identifier, Attr_NotConfigurable);

    activationRequired = compiledFunction->nInnerFunctions > 0 || (compiledFunction->flags & (CompiledData::Function::HasDirectEval | CompiledData::Function::UsesArgumentsObject));
}

Function::~Function()
{
}

void Function::updateInternalClass(ExecutionEngine *engine, const QList<QByteArray> &parameters)
{
    internalClass = engine->emptyClass;

    // iterate backwards, so we get the right ordering for duplicate names
    Scope scope(engine);
    ScopedString arg(scope);
    for (int i = parameters.size() - 1; i >= 0; --i) {
        arg = engine->newString(QString::fromUtf8(parameters.at(i)));
        while (1) {
            InternalClass *newClass = internalClass->addMember(arg, Attr_NotConfigurable);
            if (newClass != internalClass) {
                internalClass = newClass;
                break;
            }
            // duplicate arguments, need some trick to store them
            arg = engine->memoryManager->alloc<String>(engine->memoryManager, arg->d(), engine->newString(QString(0xfffe)));
        }
    }
    nFormals = parameters.size();

    const quint32 *localsIndices = compiledFunction->localsTable();
    for (quint32 i = 0; i < compiledFunction->nLocals; ++i)
        internalClass = internalClass->addMember(compilationUnit->runtimeStrings[localsIndices[i]]->identifier, Attr_NotConfigurable);

    activationRequired = true;
}

QT_END_NAMESPACE
