qtdeclarative/src/qml/jsruntime/qv4functionobject_p.h

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#ifndef QV4FUNCTIONOBJECT_H
#define QV4FUNCTIONOBJECT_H

#include "qv4global_p.h"
#include "qv4runtime_p.h"
#include "qv4engine_p.h"
#include "qv4context_p.h"
#include "qv4object_p.h"
#include "qv4string_p.h"
#include "qv4managed_p.h"
#include "qv4property_p.h"
#include "qv4objectiterator_p.h"

#include <QtCore/QString>
#include <QtCore/QHash>
#include <QtCore/QScopedPointer>
#include <cstdio>
#include <cassert>

QT_BEGIN_NAMESPACE

namespace QV4 {

struct Function;
struct Object;
struct BooleanObject;
struct NumberObject;
struct StringObject;
struct ArrayObject;
struct DateObject;
struct FunctionObject;
struct ErrorObject;
struct ArgumentsObject;
struct ExecutionContext;
struct ExecutionEngine;
class MemoryManager;

struct ObjectPrototype;
struct StringPrototype;
struct NumberPrototype;
struct BooleanPrototype;
struct ArrayPrototype;
struct FunctionPrototype;
struct DatePrototype;
struct ErrorPrototype;
struct EvalErrorPrototype;
struct RangeErrorPrototype;
struct ReferenceErrorPrototype;
struct SyntaxErrorPrototype;
struct TypeErrorPrototype;
struct URIErrorPrototype;
struct InternalClass;
struct Lookup;

struct Q_QML_EXPORT FunctionObject: Object {
    // Used with Managed::subType
    enum FunctionType {
        RegularFunction = 0,
        WrappedQtMethod = 1
    };

    enum {
        Index_Prototype = 0,
        Index_ProtoConstructor = 0
    };

    ExecutionContext *scope;
    String *name;
    String * const *formalParameterList;
    String * const *varList;
    unsigned int formalParameterCount;
    unsigned int varCount;
    Function *function;

    FunctionObject(ExecutionContext *scope, String *name = 0, bool createProto = false);
    ~FunctionObject();

    ReturnedValue newInstance();

    static ReturnedValue construct(Managed *that, CallData *);
    static ReturnedValue call(Managed *that, CallData *d);
    inline ReturnedValue construct(CallData *callData) {
        return vtbl->construct(this, callData);
    }
    inline ReturnedValue call(CallData *callData) {
        return vtbl->call(this, callData);
    }

    static FunctionObject *cast(const Value &v) {
        return v.asFunctionObject();
    }

    static FunctionObject *creatScriptFunction(ExecutionContext *scope, Function *function);

protected:
    FunctionObject(InternalClass *ic);

    static const ManagedVTable static_vtbl;
    static void markObjects(Managed *that);
    static bool hasInstance(Managed *that, const Value &value);
    static void destroy(Managed *that)
    { static_cast<FunctionObject*>(that)->~FunctionObject(); }
};

struct FunctionCtor: FunctionObject
{
    FunctionCtor(ExecutionContext *scope);

    static ReturnedValue construct(Managed *that, CallData *callData);
    static ReturnedValue call(Managed *that, CallData *callData);

protected:
    static const ManagedVTable static_vtbl;
};

struct FunctionPrototype: FunctionObject
{
    FunctionPrototype(InternalClass *ic);
    void init(ExecutionContext *ctx, const Value &ctor);

    static Value method_toString(SimpleCallContext *ctx);
    static Value method_apply(SimpleCallContext *ctx);
    static Value method_call(SimpleCallContext *ctx);
    static Value method_bind(SimpleCallContext *ctx);
};

struct BuiltinFunction: FunctionObject {
    Value (*code)(SimpleCallContext *);

    BuiltinFunction(ExecutionContext *scope, String *name, Value (*code)(SimpleCallContext *));

    static ReturnedValue construct(Managed *, CallData *);
    static ReturnedValue call(Managed *that, CallData *callData);

protected:
    static const ManagedVTable static_vtbl;
};

struct IndexedBuiltinFunction: FunctionObject
{
    Q_MANAGED

    Value (*code)(SimpleCallContext *ctx, uint index);
    uint index;

    IndexedBuiltinFunction(ExecutionContext *scope, uint index, Value (*code)(SimpleCallContext *ctx, uint index))
        : FunctionObject(scope, /*name*/0)
        , code(code)
        , index(index)
    {
        vtbl = &static_vtbl;
        isBuiltinFunction = true;
    }

    static ReturnedValue construct(Managed *m, CallData *)
    {
        m->engine()->current->throwTypeError();
        return Value::undefinedValue().asReturnedValue();
    }

    static ReturnedValue call(Managed *that, CallData *callData);
};


struct ScriptFunction: FunctionObject {
    ScriptFunction(ExecutionContext *scope, Function *function);

    static ReturnedValue construct(Managed *, CallData *callData);
    static ReturnedValue call(Managed *that, CallData *callData);

protected:
    static const ManagedVTable static_vtbl;
};

struct SimpleScriptFunction: FunctionObject {
    SimpleScriptFunction(ExecutionContext *scope, Function *function);

    static ReturnedValue construct(Managed *, CallData *callData);
    static ReturnedValue call(Managed *that, CallData *callData);

protected:
    static const ManagedVTable static_vtbl;
};

struct BoundFunction: FunctionObject {
    FunctionObject *target;
    Value boundThis;
    QVector<Value> boundArgs;

    BoundFunction(ExecutionContext *scope, FunctionObject *target, Value boundThis, const QVector<Value> &boundArgs);
    ~BoundFunction() {}


    static ReturnedValue construct(Managed *, CallData *d);
    static ReturnedValue call(Managed *that, CallData *dd);

    static const ManagedVTable static_vtbl;
    static void destroy(Managed *);
    static void markObjects(Managed *that);
    static bool hasInstance(Managed *that, const Value &value);
};

}

QT_END_NAMESPACE

#endif // QMLJS_OBJECTS_H