qv4isel_p.cpp


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#include "debugging.h"
#include "qmljs_engine.h"
#include "qv4ir_p.h"
#include "qv4isel_p.h"
#include "qv4isel_util_p.h"

#include <QString>

#include <cassert>

using namespace QQmlJS;

EvalInstructionSelection::EvalInstructionSelection(VM::ExecutionEngine *engine, IR::Module *module)
    : _engine(engine)
{
    assert(engine);
    assert(module);

    createFunctionMapping(engine, module->rootFunction);
    foreach (IR::Function *f, module->functions) {
        assert(_irToVM.contains(f));
    }
}

EvalInstructionSelection::~EvalInstructionSelection()
{}

EvalISelFactory::~EvalISelFactory()
{}

VM::Function *EvalInstructionSelection::createFunctionMapping(VM::ExecutionEngine *engine, IR::Function *irFunction)
{
    VM::Function *vmFunction = engine->newFunction(irFunction->name ? *irFunction->name : QString());
    _irToVM.insert(irFunction, vmFunction);

    vmFunction->hasDirectEval = irFunction->hasDirectEval;
    vmFunction->usesArgumentsObject = irFunction->usesArgumentsObject;
    vmFunction->isStrict = irFunction->isStrict;

    foreach (const QString *formal, irFunction->formals)
        if (formal)
            vmFunction->formals.append(*formal);
    foreach (const QString *local, irFunction->locals)
        if (local)
            vmFunction->locals.append(*local);

    foreach (IR::Function *function, irFunction->nestedFunctions)
        vmFunction->nestedFunctions.append(createFunctionMapping(engine, function));

    if (engine->debugger)
        engine->debugger->mapFunction(vmFunction, irFunction);

    return vmFunction;
}

VM::Function *EvalInstructionSelection::vmFunction(IR::Function *f) {
    VM::Function *function = _irToVM[f];
    if (!function->code)
        run(function, f);
    return function;
}