mirror of
https://github.com/oven-sh/bun
synced 2026-02-16 05:42:43 +00:00
75 lines
2.7 KiB
C++
75 lines
2.7 KiB
C++
#pragma once
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namespace Zig {
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class GlobalObject;
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}
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#include "root.h"
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#include <JavaScriptCore/JSFunction.h>
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#include <JavaScriptCore/VM.h>
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#include "headers-handwritten.h"
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#include "BunClientData.h"
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#include <JavaScriptCore/CallFrame.h>
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namespace JSC {
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class JSGlobalObject;
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}
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namespace Zig {
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using NativeFunctionPtr = SYSV_ABI JSC::EncodedJSValue (*)(JSC::JSGlobalObject* globalObject, JSC::CallFrame* callFrame);
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/**
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* Subclass of JSC::JSFunction that holds an additional single native JSFunction as property.
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* Can be used to wrap JS function calls with additional logic at native level.
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*
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* Used for example for bun test to implement support for `expect.extends()`.
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*/
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class JSWrappingFunction final : public JSC::JSFunction {
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public:
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using Base = JSC::JSFunction;
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static constexpr unsigned StructureFlags = Base::StructureFlags;
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static constexpr JSC::DestructionMode needsDestruction = DoesNotNeedDestruction;
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static void destroy(JSCell* cell)
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{
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static_cast<JSWrappingFunction*>(cell)->JSWrappingFunction::~JSWrappingFunction();
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}
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template<typename, JSC::SubspaceAccess mode> static JSC::GCClient::IsoSubspace* subspaceFor(JSC::VM& vm)
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{
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if constexpr (mode == JSC::SubspaceAccess::Concurrently)
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return nullptr;
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return WebCore::subspaceForImpl<JSWrappingFunction, WebCore::UseCustomHeapCellType::No>(
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vm,
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[](auto& spaces) { return spaces.m_clientSubspaceForWrappingFunction.get(); },
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[](auto& spaces, auto&& space) { spaces.m_clientSubspaceForWrappingFunction = std::forward<decltype(space)>(space); },
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[](auto& spaces) { return spaces.m_subspaceForWrappingFunction.get(); },
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[](auto& spaces, auto&& space) { spaces.m_subspaceForWrappingFunction = std::forward<decltype(space)>(space); });
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}
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DECLARE_EXPORT_INFO;
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static JSWrappingFunction* create(JSC::VM& vm, Zig::GlobalObject* globalObject, const BunString* symbolName, NativeFunctionPtr functionPointer, JSC::JSValue wrappedFn);
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static JSC::Structure* createStructure(JSC::VM& vm, JSC::JSGlobalObject* globalObject, JSC::JSValue prototype)
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{
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ASSERT(globalObject);
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return JSC::Structure::create(vm, globalObject, prototype, JSC::TypeInfo(JSC::JSFunctionType, StructureFlags), info());
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}
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private:
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JSWrappingFunction(JSC::VM& vm, JSC::NativeExecutable* native, JSC::JSGlobalObject* globalObject, JSC::Structure* structure)
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: Base(vm, native, globalObject, structure)
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{
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}
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void finishCreation(JSC::VM&, JSC::NativeExecutable*, unsigned length, const String& name);
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DECLARE_VISIT_CHILDREN;
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JSC::WriteBarrier<JSC::JSFunction> m_wrappedFn;
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};
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}
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