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| #ifndef QV4JSCALL_H |
| #define QV4JSCALL_H |
| |
| // |
| // W A R N I N G |
| // ------------- |
| // |
| // This file is not part of the Qt API. It exists purely as an |
| // implementation detail. This header file may change from version to |
| // version without notice, or even be removed. |
| // |
| // We mean it. |
| // |
| |
| #include "qv4object_p.h" |
| #include "qv4function_p.h" |
| #include "qv4functionobject_p.h" |
| #include "qv4context_p.h" |
| #include "qv4scopedvalue_p.h" |
| #include "qv4stackframe_p.h" |
| |
| QT_BEGIN_NAMESPACE |
| |
| namespace QV4 { |
| |
| struct JSCallData { |
| JSCallData(const Scope &scope, int argc = 0, const Value *argv = nullptr, const Value *thisObject = nullptr) |
| : scope(scope), argc(argc) |
| { |
| if (thisObject) |
| this->thisObject = const_cast<Value *>(thisObject); |
| else |
| this->thisObject = scope.alloc(); |
| if (argv) |
| this->args = const_cast<Value *>(argv); |
| else |
| this->args = scope.alloc(argc); |
| } |
| |
| JSCallData *operator->() { |
| return this; |
| } |
| |
| CallData *callData(const FunctionObject *f = nullptr) const { |
| int size = int(offsetof(QV4::CallData, args)/sizeof(QV4::Value)) + argc; |
| CallData *ptr = reinterpret_cast<CallData *>(scope.alloc<Scope::Uninitialized>(size)); |
| ptr->function = Encode::undefined(); |
| ptr->context = Encode::undefined(); |
| ptr->accumulator = Encode::undefined(); |
| ptr->thisObject = thisObject->asReturnedValue(); |
| ptr->newTarget = Encode::undefined(); |
| ptr->setArgc(argc); |
| if (argc) |
| memcpy(ptr->args, args, argc*sizeof(Value)); |
| if (f) |
| ptr->function = f->asReturnedValue(); |
| return ptr; |
| } |
| const Scope &scope; |
| int argc; |
| Value *args; |
| Value *thisObject; |
| }; |
| |
| inline |
| ReturnedValue FunctionObject::callAsConstructor(const JSCallData &data) const |
| { |
| return callAsConstructor(data.args, data.argc, this); |
| } |
| |
| inline |
| ReturnedValue FunctionObject::call(const JSCallData &data) const |
| { |
| return call(data.thisObject, data.args, data.argc); |
| } |
| |
| |
| struct ScopedStackFrame { |
| Scope &scope; |
| CppStackFrame frame; |
| |
| ScopedStackFrame(Scope &scope, Heap::ExecutionContext *context) |
| : scope(scope) |
| { |
| frame.parent = scope.engine->currentStackFrame; |
| if (!context) |
| return; |
| frame.jsFrame = reinterpret_cast<CallData *>(scope.alloc(sizeof(CallData)/sizeof(Value))); |
| frame.jsFrame->context = context; |
| frame.v4Function = frame.parent ? frame.parent->v4Function : nullptr; |
| scope.engine->currentStackFrame = &frame; |
| } |
| ~ScopedStackFrame() { |
| scope.engine->currentStackFrame = frame.parent; |
| } |
| }; |
| |
| } |
| |
| QT_END_NAMESPACE |
| |
| #endif // QV4JSCALL_H |