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#include "qv4jithelpers_p.h"
#include "qv4engine_p.h"
#include "qv4function_p.h"
#include "qv4value_p.h"
#include "qv4object_p.h"
#include "qv4functionobject_p.h"
#include "qv4lookup_p.h"
#include <QtCore/private/qnumeric_p.h>

#ifdef V4_ENABLE_JIT

QT_BEGIN_NAMESPACE
namespace QV4 {
namespace JIT {
namespace Helpers {

void convertThisToObject(ExecutionEngine *engine, Value *t)
{
    if (!t->isObject()) {
        if (t->isNullOrUndefined()) {
            *t = engine->globalObject->asReturnedValue();
        } else {
            *t = t->toObject(engine)->asReturnedValue();
        }
    }
}

ReturnedValue loadGlobalLookup(Function *f, ExecutionEngine *engine, int index)
{
    Lookup *l = f->compilationUnit->runtimeLookups + index;
    return l->globalGetter(l, engine);
}

ReturnedValue toObject(ExecutionEngine *engine, const Value &obj)
{
    if (obj.isObject())
        return obj.asReturnedValue();

    return obj.toObject(engine)->asReturnedValue();
}

ReturnedValue exp(const Value &base, const Value &exp)
{
    double b = base.toNumber();
    double e = exp.toNumber();
    if (qt_is_inf(e) && (b == 1 || b == -1))
        return Encode(qt_snan());
    return Encode(pow(b,e));
}

ReturnedValue getLookup(Function *f, ExecutionEngine *engine, const Value &base, int index)
{
    Lookup *l = f->compilationUnit->runtimeLookups + index;
    return l->getter(l, engine, base);
}

void setLookupSloppy(Function *f, int index, Value &base, const Value &value)
{
    ExecutionEngine *engine = f->internalClass->engine;
    QV4::Lookup *l = f->compilationUnit->runtimeLookups + index;
    l->setter(l, engine, base, value);
}

void setLookupStrict(Function *f, int index, Value &base, const Value &value)
{
    ExecutionEngine *engine = f->internalClass->engine;
    QV4::Lookup *l = f->compilationUnit->runtimeLookups + index;
    if (!l->setter(l, engine, base, value))
        engine->throwTypeError();
}


void pushBlockContext(Value *stack, int index)
{
    ExecutionContext *c = static_cast<ExecutionContext *>(stack + CallData::Context);
    stack[CallData::Context] = Runtime::method_createBlockContext(c, index);
}

void cloneBlockContext(Value *contextSlot)
{
    *contextSlot = Runtime::method_cloneBlockContext(static_cast<QV4::ExecutionContext *>(contextSlot));
}

void pushScriptContext(Value *stack, ExecutionEngine *engine, int index)
{
    stack[CallData::Context] = Runtime::method_createScriptContext(engine, index);
}

void popScriptContext(Value *stack, ExecutionEngine *engine)
{
    stack[CallData::Context] = Runtime::method_popScriptContext(engine);
}

ReturnedValue deleteProperty(QV4::Function *function, const QV4::Value &base, const QV4::Value &index)
{
    auto engine = function->internalClass->engine;
    if (!Runtime::method_deleteProperty(engine, base, index)) {
        if (function->isStrict())
            engine->throwTypeError();
        return Encode(false);
    } else {
        return Encode(true);
    }
}

ReturnedValue deleteName(Function *function, int name)
{
    auto engine = function->internalClass->engine;
    if (!Runtime::method_deleteName(engine, name)) {
        if (function->isStrict())
            engine->throwTypeError();
        return Encode(false);
    } else {
        return Encode(true);
    }
}

void throwOnNullOrUndefined(ExecutionEngine *engine, const Value &v)
{
    if (v.isNullOrUndefined())
        engine->throwTypeError();
}

} // Helpers namespace
} // JIT namespace
} // QV4 namespace
QT_END_NAMESPACE

#endif // V4_ENABLE_JIT