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74f133293d
Instead of creating a second ExecutionContext in BoundFunction.[[Call]], we now implement BoundFunction::get_stack_frame_size() and combine information from the target + the bound arguments list. This allows BoundFunction.[[Call]] to reuse the already-established ExecutionContext for the callee. 1.20x speedup on MicroBench/bound-call-04-args.js
44 lines
1.8 KiB
C++
44 lines
1.8 KiB
C++
/*
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* Copyright (c) 2020, Jack Karamanian <karamanian.jack@gmail.com>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <LibJS/Runtime/Completion.h>
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#include <LibJS/Runtime/FunctionObject.h>
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namespace JS {
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class BoundFunction final : public FunctionObject {
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JS_OBJECT(BoundFunction, FunctionObject);
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GC_DECLARE_ALLOCATOR(BoundFunction);
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public:
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static ThrowCompletionOr<GC::Ref<BoundFunction>> create(Realm&, FunctionObject& target_function, Value bound_this, Vector<Value> bound_arguments);
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virtual ~BoundFunction() override = default;
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virtual ThrowCompletionOr<Value> internal_call(ExecutionContext&, Value this_argument) override;
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virtual ThrowCompletionOr<GC::Ref<Object>> internal_construct(ReadonlySpan<Value> arguments_list, FunctionObject& new_target) override;
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virtual bool is_strict_mode() const override { return m_bound_target_function->is_strict_mode(); }
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virtual bool has_constructor() const override { return m_bound_target_function->has_constructor(); }
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FunctionObject& bound_target_function() const { return *m_bound_target_function; }
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Value bound_this() const { return m_bound_this; }
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Vector<Value> const& bound_arguments() const { return m_bound_arguments; }
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private:
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BoundFunction(Realm&, FunctionObject& target_function, Value bound_this, Vector<Value> bound_arguments, Object* prototype);
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ThrowCompletionOr<void> get_stack_frame_size(size_t& registers_and_constants_and_locals_count, size_t& argument_count) override;
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virtual void visit_edges(Visitor&) override;
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GC::Ptr<FunctionObject> m_bound_target_function; // [[BoundTargetFunction]]
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Value m_bound_this; // [[BoundThis]]
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Vector<Value> m_bound_arguments; // [[BoundArguments]]
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};
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}
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