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// Copyright 2014 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "src/runtime/runtime-utils.h"
#include "src/arguments.h"
#include "src/factory.h"
#include "src/frames-inl.h"
#include "src/objects-inl.h"
namespace v8 {
namespace internal {
RUNTIME_FUNCTION(Runtime_CreateJSGeneratorObject) {
HandleScope scope(isolate);
DCHECK_EQ(2, args.length());
CONVERT_ARG_HANDLE_CHECKED(JSFunction, function, 0);
CONVERT_ARG_HANDLE_CHECKED(Object, receiver, 1);
CHECK(IsResumableFunction(function->shared()->kind()));
// Underlying function needs to have bytecode available.
DCHECK(function->shared()->HasBytecodeArray());
DCHECK(!function->shared()->HasBaselineCode());
int size = function->shared()->bytecode_array()->register_count();
Handle<FixedArray> register_file = isolate->factory()->NewFixedArray(size);
Handle<JSGeneratorObject> generator =
isolate->factory()->NewJSGeneratorObject(function);
generator->set_function(*function);
generator->set_context(isolate->context());
generator->set_receiver(*receiver);
generator->set_register_file(*register_file);
generator->set_continuation(JSGeneratorObject::kGeneratorExecuting);
return *generator;
}
RUNTIME_FUNCTION(Runtime_GeneratorClose) {
HandleScope scope(isolate);
DCHECK_EQ(1, args.length());
CONVERT_ARG_HANDLE_CHECKED(JSGeneratorObject, generator, 0);
generator->set_continuation(JSGeneratorObject::kGeneratorClosed);
return isolate->heap()->undefined_value();
}
RUNTIME_FUNCTION(Runtime_GeneratorGetFunction) {
HandleScope scope(isolate);
DCHECK_EQ(1, args.length());
CONVERT_ARG_HANDLE_CHECKED(JSGeneratorObject, generator, 0);
return generator->function();
}
RUNTIME_FUNCTION(Runtime_GeneratorGetReceiver) {
HandleScope scope(isolate);
DCHECK_EQ(1, args.length());
CONVERT_ARG_HANDLE_CHECKED(JSGeneratorObject, generator, 0);
return generator->receiver();
}
RUNTIME_FUNCTION(Runtime_GeneratorGetContext) {
HandleScope scope(isolate);
DCHECK_EQ(1, args.length());
CONVERT_ARG_HANDLE_CHECKED(JSGeneratorObject, generator, 0);
return generator->context();
}
RUNTIME_FUNCTION(Runtime_GeneratorGetInputOrDebugPos) {
HandleScope scope(isolate);
DCHECK_EQ(1, args.length());
CONVERT_ARG_HANDLE_CHECKED(JSGeneratorObject, generator, 0);
return generator->input_or_debug_pos();
}
RUNTIME_FUNCTION(Runtime_GeneratorGetResumeMode) {
HandleScope scope(isolate);
DCHECK_EQ(1, args.length());
CONVERT_ARG_HANDLE_CHECKED(JSGeneratorObject, generator, 0);
return Smi::FromInt(generator->resume_mode());
}
RUNTIME_FUNCTION(Runtime_GeneratorGetContinuation) {
HandleScope scope(isolate);
DCHECK_EQ(1, args.length());
CONVERT_ARG_HANDLE_CHECKED(JSGeneratorObject, generator, 0);
return Smi::FromInt(generator->continuation());
}
RUNTIME_FUNCTION(Runtime_GeneratorGetSourcePosition) {
HandleScope scope(isolate);
DCHECK_EQ(1, args.length());
CONVERT_ARG_HANDLE_CHECKED(JSGeneratorObject, generator, 0);
if (!generator->is_suspended()) return isolate->heap()->undefined_value();
return Smi::FromInt(generator->source_position());
}
} // namespace internal
} // namespace v8
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