git.saurik.com Git - apple/javascriptcore.git/blame_incremental

... / ...

Commit	Line	Data
	1	/*
	2	* Copyright (C) 1999-2000,2003 Harri Porten (porten@kde.org)
	3	* Copyright (C) 2007, 2008, 2011 Apple Inc. All rights reserved.
	4	*
	5	* This library is free software; you can redistribute it and/or
	6	* modify it under the terms of the GNU Lesser General Public
	7	* License as published by the Free Software Foundation; either
	8	* version 2 of the License, or (at your option) any later version.
	9	*
	10	* This library is distributed in the hope that it will be useful,
	11	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	12	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	13	* Lesser General Public License for more details.
	14	*
	15	* You should have received a copy of the GNU Lesser General Public
	16	* License along with this library; if not, write to the Free Software
	17	* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301
	18	* USA
	19	*
	20	*/
	21
	22	#include "config.h"
	23	#include "NumberConstructor.h"
	24
	25	#include "Lookup.h"
	26	#include "NumberObject.h"
	27	#include "NumberPrototype.h"
	28	#include "JSCInlines.h"
	29
	30	namespace JSC {
	31
	32	static EncodedJSValue numberConstructorNaNValue(ExecState, JSObject, EncodedJSValue, PropertyName);
	33	static EncodedJSValue numberConstructorNegInfinity(ExecState, JSObject, EncodedJSValue, PropertyName);
	34	static EncodedJSValue numberConstructorPosInfinity(ExecState, JSObject, EncodedJSValue, PropertyName);
	35	static EncodedJSValue numberConstructorMaxValue(ExecState, JSObject, EncodedJSValue, PropertyName);
	36	static EncodedJSValue numberConstructorMinValue(ExecState, JSObject, EncodedJSValue, PropertyName);
	37
	38	} // namespace JSC
	39
	40	#include "NumberConstructor.lut.h"
	41
	42	namespace JSC {
	43
	44	STATIC_ASSERT_IS_TRIVIALLY_DESTRUCTIBLE(NumberConstructor);
	45
	46	const ClassInfo NumberConstructor::s_info = { "Function", &InternalFunction::s_info, 0, ExecState::numberConstructorTable, CREATE_METHOD_TABLE(NumberConstructor) };
	47
	48	/* Source for NumberConstructor.lut.h
	49	@begin numberConstructorTable
	50	NaN numberConstructorNaNValue DontEnum\|DontDelete\|ReadOnly
	51	NEGATIVE_INFINITY numberConstructorNegInfinity DontEnum\|DontDelete\|ReadOnly
	52	POSITIVE_INFINITY numberConstructorPosInfinity DontEnum\|DontDelete\|ReadOnly
	53	MAX_VALUE numberConstructorMaxValue DontEnum\|DontDelete\|ReadOnly
	54	MIN_VALUE numberConstructorMinValue DontEnum\|DontDelete\|ReadOnly
	55	@end
	56	*/
	57
	58	NumberConstructor::NumberConstructor(VM& vm, Structure* structure)
	59	: InternalFunction(vm, structure)
	60	{
	61	}
	62
	63	void NumberConstructor::finishCreation(VM& vm, NumberPrototype* numberPrototype)
	64	{
	65	Base::finishCreation(vm, NumberPrototype::info()->className);
	66	ASSERT(inherits(info()));
	67
	68	// Number.Prototype
	69	putDirectWithoutTransition(vm, vm.propertyNames->prototype, numberPrototype, DontEnum \| DontDelete \| ReadOnly);
	70
	71	// no. of arguments for constructor
	72	putDirectWithoutTransition(vm, vm.propertyNames->length, jsNumber(1), ReadOnly \| DontEnum \| DontDelete);
	73	}
	74
	75	bool NumberConstructor::getOwnPropertySlot(JSObject* object, ExecState* exec, PropertyName propertyName, PropertySlot& slot)
	76	{
	77	return getStaticValueSlot<NumberConstructor, InternalFunction>(exec, ExecState::numberConstructorTable(exec->vm()), jsCast<NumberConstructor*>(object), propertyName, slot);
	78	}
	79
	80	static EncodedJSValue numberConstructorNaNValue(ExecState, JSObject, EncodedJSValue, PropertyName)
	81	{
	82	return JSValue::encode(jsNaN());
	83	}
	84
	85	static EncodedJSValue numberConstructorNegInfinity(ExecState, JSObject, EncodedJSValue, PropertyName)
	86	{
	87	return JSValue::encode(jsNumber(-std::numeric_limits<double>::infinity()));
	88	}
	89
	90	static EncodedJSValue numberConstructorPosInfinity(ExecState, JSObject, EncodedJSValue, PropertyName)
	91	{
	92	return JSValue::encode(jsNumber(std::numeric_limits<double>::infinity()));
	93	}
	94
	95	static EncodedJSValue numberConstructorMaxValue(ExecState, JSObject, EncodedJSValue, PropertyName)
	96	{
	97	return JSValue::encode(jsNumber(1.7976931348623157E+308));
	98	}
	99
	100	static EncodedJSValue numberConstructorMinValue(ExecState, JSObject, EncodedJSValue, PropertyName)
	101	{
	102	return JSValue::encode(jsNumber(5E-324));
	103	}
	104
	105	// ECMA 15.7.1
	106	static EncodedJSValue JSC_HOST_CALL constructWithNumberConstructor(ExecState* exec)
	107	{
	108	NumberObject* object = NumberObject::create(exec->vm(), asInternalFunction(exec->callee())->globalObject()->numberObjectStructure());
	109	double n = exec->argumentCount() ? exec->uncheckedArgument(0).toNumber(exec) : 0;
	110	object->setInternalValue(exec->vm(), jsNumber(n));
	111	return JSValue::encode(object);
	112	}
	113
	114	ConstructType NumberConstructor::getConstructData(JSCell*, ConstructData& constructData)
	115	{
	116	constructData.native.function = constructWithNumberConstructor;
	117	return ConstructTypeHost;
	118	}
	119
	120	// ECMA 15.7.2
	121	static EncodedJSValue JSC_HOST_CALL callNumberConstructor(ExecState* exec)
	122	{
	123	return JSValue::encode(jsNumber(!exec->argumentCount() ? 0 : exec->uncheckedArgument(0).toNumber(exec)));
	124	}
	125
	126	CallType NumberConstructor::getCallData(JSCell*, CallData& callData)
	127	{
	128	callData.native.function = callNumberConstructor;
	129	return CallTypeHost;
	130	}
	131
	132	} // namespace JSC