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Commit	Line	Data
	1	/*
	2	* Copyright (C) 1999-2000 Harri Porten (porten@kde.org)
	3	* Copyright (C) 2008 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 Library 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	* Library General Public License for more details.
	14	*
	15	* You should have received a copy of the GNU Library General Public License
	16	* along with this library; see the file COPYING.LIB. If not, write to
	17	* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
	18	* Boston, MA 02110-1301, USA.
	19	*
	20	*/
	21
	22	#include "config.h"
	23	#include "Operations.h"
	24
	25	#include "Error.h"
	26	#include "JSCInlines.h"
	27	#include "JSObject.h"
	28	#include "JSString.h"
	29	#include <wtf/MathExtras.h>
	30
	31	namespace JSC {
	32
	33	bool JSValue::equalSlowCase(ExecState* exec, JSValue v1, JSValue v2)
	34	{
	35	return equalSlowCaseInline(exec, v1, v2);
	36	}
	37
	38	bool JSValue::strictEqualSlowCase(ExecState* exec, JSValue v1, JSValue v2)
	39	{
	40	return strictEqualSlowCaseInline(exec, v1, v2);
	41	}
	42
	43	NEVER_INLINE JSValue jsAddSlowCase(CallFrame* callFrame, JSValue v1, JSValue v2)
	44	{
	45	// exception for the Date exception in defaultValue()
	46	JSValue p1 = v1.toPrimitive(callFrame);
	47	JSValue p2 = v2.toPrimitive(callFrame);
	48
	49	if (p1.isString())
	50	return jsString(callFrame, asString(p1), p2.toString(callFrame));
	51
	52	if (p2.isString())
	53	return jsString(callFrame, p1.toString(callFrame), asString(p2));
	54
	55	return jsNumber(p1.toNumber(callFrame) + p2.toNumber(callFrame));
	56	}
	57
	58	JSValue jsTypeStringForValue(VM& vm, JSGlobalObject* globalObject, JSValue v)
	59	{
	60	if (v.isUndefined())
	61	return vm.smallStrings.undefinedString();
	62	if (v.isBoolean())
	63	return vm.smallStrings.booleanString();
	64	if (v.isNumber())
	65	return vm.smallStrings.numberString();
	66	if (v.isString())
	67	return vm.smallStrings.stringString();
	68	if (v.isObject()) {
	69	// Return "undefined" for objects that should be treated
	70	// as null when doing comparisons.
	71	if (asObject(v)->structure(vm)->masqueradesAsUndefined(globalObject))
	72	return vm.smallStrings.undefinedString();
	73	CallData callData;
	74	JSObject* object = asObject(v);
	75	if (object->methodTable(vm)->getCallData(object, callData) != CallTypeNone)
	76	return vm.smallStrings.functionString();
	77	}
	78	return vm.smallStrings.objectString();
	79	}
	80
	81	JSValue jsTypeStringForValue(CallFrame* callFrame, JSValue v)
	82	{
	83	return jsTypeStringForValue(callFrame->vm(), callFrame->lexicalGlobalObject(), v);
	84	}
	85
	86	bool jsIsObjectType(CallFrame* callFrame, JSValue v)
	87	{
	88	if (!v.isCell())
	89	return v.isNull();
	90
	91	JSType type = v.asCell()->type();
	92	if (type == StringType)
	93	return false;
	94	if (type >= ObjectType) {
	95	if (asObject(v)->structure(callFrame->vm())->masqueradesAsUndefined(callFrame->lexicalGlobalObject()))
	96	return false;
	97	CallData callData;
	98	JSObject* object = asObject(v);
	99	if (object->methodTable(callFrame->vm())->getCallData(object, callData) != CallTypeNone)
	100	return false;
	101	}
	102	return true;
	103	}
	104
	105	bool jsIsFunctionType(JSValue v)
	106	{
	107	if (v.isObject()) {
	108	CallData callData;
	109	JSObject* object = asObject(v);
	110	if (object->methodTable()->getCallData(object, callData) != CallTypeNone)
	111	return true;
	112	}
	113	return false;
	114	}
	115
	116	} // namespace JSC