WeakMapPrototype.cpp [plain text]
#include "config.h"
#include "WeakMapPrototype.h"
#include "JSCInlines.h"
#include "JSWeakMap.h"
namespace JSC {
const ClassInfo WeakMapPrototype::s_info = { "WeakMap", &Base::s_info, nullptr, nullptr, CREATE_METHOD_TABLE(WeakMapPrototype) };
static EncodedJSValue JSC_HOST_CALL protoFuncWeakMapDelete(ExecState*);
static EncodedJSValue JSC_HOST_CALL protoFuncWeakMapGet(ExecState*);
static EncodedJSValue JSC_HOST_CALL protoFuncWeakMapHas(ExecState*);
static EncodedJSValue JSC_HOST_CALL protoFuncWeakMapSet(ExecState*);
void WeakMapPrototype::finishCreation(VM& vm, JSGlobalObject* globalObject)
{
Base::finishCreation(vm);
ASSERT(inherits(vm, info()));
didBecomePrototype();
JSC_NATIVE_FUNCTION_WITHOUT_TRANSITION(vm.propertyNames->deleteKeyword, protoFuncWeakMapDelete, static_cast<unsigned>(PropertyAttribute::DontEnum), 1);
JSC_NATIVE_INTRINSIC_FUNCTION_WITHOUT_TRANSITION(vm.propertyNames->get, protoFuncWeakMapGet, static_cast<unsigned>(PropertyAttribute::DontEnum), 1, JSWeakMapGetIntrinsic);
JSC_NATIVE_INTRINSIC_FUNCTION_WITHOUT_TRANSITION(vm.propertyNames->has, protoFuncWeakMapHas, static_cast<unsigned>(PropertyAttribute::DontEnum), 1, JSWeakMapHasIntrinsic);
JSC_NATIVE_FUNCTION_WITHOUT_TRANSITION(vm.propertyNames->set, protoFuncWeakMapSet, static_cast<unsigned>(PropertyAttribute::DontEnum), 2);
putDirectWithoutTransition(vm, vm.propertyNames->toStringTagSymbol, jsString(&vm, "WeakMap"), PropertyAttribute::DontEnum | PropertyAttribute::ReadOnly);
}
ALWAYS_INLINE static JSWeakMap* getWeakMap(CallFrame* callFrame, JSValue value)
{
VM& vm = callFrame->vm();
auto scope = DECLARE_THROW_SCOPE(vm);
if (UNLIKELY(!value.isObject())) {
throwTypeError(callFrame, scope, WTF::ASCIILiteral("Called WeakMap function on non-object"));
return nullptr;
}
if (LIKELY(isJSWeakMap(asObject(value))))
return jsCast<JSWeakMap*>(value);
throwTypeError(callFrame, scope, WTF::ASCIILiteral("Called WeakMap function on a non-WeakMap object"));
return nullptr;
}
EncodedJSValue JSC_HOST_CALL protoFuncWeakMapDelete(CallFrame* callFrame)
{
auto* map = getWeakMap(callFrame, callFrame->thisValue());
if (!map)
return JSValue::encode(jsUndefined());
JSValue key = callFrame->argument(0);
return JSValue::encode(jsBoolean(key.isObject() && map->remove(asObject(key))));
}
EncodedJSValue JSC_HOST_CALL protoFuncWeakMapGet(CallFrame* callFrame)
{
auto* map = getWeakMap(callFrame, callFrame->thisValue());
if (!map)
return JSValue::encode(jsUndefined());
JSValue key = callFrame->argument(0);
if (!key.isObject())
return JSValue::encode(jsUndefined());
return JSValue::encode(map->get(asObject(key)));
}
EncodedJSValue JSC_HOST_CALL protoFuncWeakMapHas(CallFrame* callFrame)
{
auto* map = getWeakMap(callFrame, callFrame->thisValue());
if (!map)
return JSValue::encode(jsUndefined());
JSValue key = callFrame->argument(0);
return JSValue::encode(jsBoolean(key.isObject() && map->has(asObject(key))));
}
EncodedJSValue JSC_HOST_CALL protoFuncWeakMapSet(CallFrame* callFrame)
{
VM& vm = callFrame->vm();
auto scope = DECLARE_THROW_SCOPE(vm);
auto* map = getWeakMap(callFrame, callFrame->thisValue());
EXCEPTION_ASSERT(!!scope.exception() == !map);
if (!map)
return JSValue::encode(jsUndefined());
JSValue key = callFrame->argument(0);
if (!key.isObject())
return JSValue::encode(throwTypeError(callFrame, scope, WTF::ASCIILiteral("Attempted to set a non-object key in a WeakMap")));
map->set(vm, asObject(key), callFrame->argument(1));
return JSValue::encode(callFrame->thisValue());
}
}