2009-06-10 18:29:44 -07:00
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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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2007-03-22 10:30:00 -07:00
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*
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* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is Mozilla Communicator client code, released
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* March 31, 1998.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either of the GNU General Public License Version 2 or later (the "GPL"),
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* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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2010-05-10 22:01:31 -07:00
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#define __STDC_LIMIT_MACROS
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2007-03-22 10:30:00 -07:00
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/*
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* JS boolean implementation.
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*/
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#include "jstypes.h"
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#include "jsstdint.h"
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#include "jsutil.h" /* Added by JSIFY */
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#include "jsapi.h"
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#include "jsatom.h"
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#include "jsbool.h"
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#include "jscntxt.h"
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#include "jsversion.h"
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#include "jslock.h"
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#include "jsnum.h"
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#include "jsobj.h"
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#include "jsstr.h"
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2009-06-30 17:19:42 -07:00
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#include "jsvector.h"
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2010-05-10 22:01:31 -07:00
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#include "jsobjinlines.h"
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2008-06-25 02:43:02 -07:00
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2010-05-10 22:01:31 -07:00
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using namespace js;
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Class js_BooleanClass = {
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"Boolean",
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JSCLASS_HAS_RESERVED_SLOTS(1) | JSCLASS_HAS_CACHED_PROTO(JSProto_Boolean),
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PropertyStub, PropertyStub, PropertyStub, PropertyStub,
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EnumerateStub, ResolveStub, ConvertStub, NULL,
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JSCLASS_NO_OPTIONAL_MEMBERS
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};
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#if JS_HAS_TOSOURCE
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#include "jsprf.h"
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static JSBool
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bool_toSource(JSContext *cx, uintN argc, Value *vp)
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{
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const Value *primp;
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if (!js_GetPrimitiveThis(cx, vp, &js_BooleanClass, &primp))
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return JS_FALSE;
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char buf[32];
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JS_snprintf(buf, sizeof buf, "(new %s(%s))",
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js_BooleanClass.name,
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JS_BOOLEAN_STR(vp->asBoolean()));
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JSString *str = JS_NewStringCopyZ(cx, buf);
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if (!str)
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return JS_FALSE;
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vp->setString(str);
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return JS_TRUE;
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}
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#endif
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static JSBool
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bool_toString(JSContext *cx, uintN argc, Value *vp)
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{
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const Value *primp;
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if (!js_GetPrimitiveThis(cx, vp, &js_BooleanClass, &primp))
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return JS_FALSE;
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JSAtom *atom = cx->runtime->atomState.booleanAtoms[primp->asBoolean() ? 1 : 0];
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JSString *str = ATOM_TO_STRING(atom);
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if (!str)
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return JS_FALSE;
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vp->setString(str);
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return JS_TRUE;
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}
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static JSBool
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bool_valueOf(JSContext *cx, uintN argc, Value *vp)
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{
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const Value *primp;
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if (!js_GetPrimitiveThis(cx, vp, &js_BooleanClass, &primp))
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return JS_FALSE;
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vp->copy(*primp);
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return JS_TRUE;
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}
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static JSFunctionSpec boolean_methods[] = {
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#if JS_HAS_TOSOURCE
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JS_FN(js_toSource_str, bool_toSource, 0, JSFUN_THISP_BOOLEAN),
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#endif
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JS_FN(js_toString_str, bool_toString, 0, JSFUN_THISP_BOOLEAN),
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JS_FN(js_valueOf_str, bool_valueOf, 0, JSFUN_THISP_BOOLEAN),
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JS_FN(js_toJSON_str, bool_valueOf, 0, JSFUN_THISP_BOOLEAN),
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JS_FS_END
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};
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static JSBool
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Boolean(JSContext *cx, JSObject *obj, uintN argc, Value *argv, Value *rval)
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{
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Value bval;
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if (argc != 0)
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bval.setBoolean(js_ValueToBoolean(argv[0]));
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else
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bval.setBoolean(false);
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if (!JS_IsConstructing(cx))
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rval->copy(bval);
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else
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obj->setPrimitiveThis(bval);
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return true;
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}
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JSObject *
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js_InitBooleanClass(JSContext *cx, JSObject *obj)
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{
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JSObject *proto;
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proto = js_InitClass(cx, obj, NULL, &js_BooleanClass, Boolean, 1,
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NULL, boolean_methods, NULL, NULL);
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if (!proto)
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return NULL;
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proto->setPrimitiveThis(BooleanTag(false));
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return proto;
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}
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JSString *
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js_BooleanToString(JSContext *cx, JSBool b)
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{
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return ATOM_TO_STRING(cx->runtime->atomState.booleanAtoms[b ? 1 : 0]);
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}
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2009-06-30 17:19:42 -07:00
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/* This function implements E-262-3 section 9.8, toString. */
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JSBool
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js_BooleanToCharBuffer(JSContext *cx, JSBool b, JSCharBuffer &cb)
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{
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return b ? js_AppendLiteral(cb, "true") : js_AppendLiteral(cb, "false");
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}
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JSBool
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js_ValueToBoolean(const Value &v)
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{
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if (v.isNullOrUndefined())
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return JS_FALSE;
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if (v.isObject())
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return JS_TRUE;
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if (v.isString())
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return v.asString()->length() != 0;
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if (v.isInt32())
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return v.asInt32() != 0;
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if (v.isDouble()) {
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jsdouble d;
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d = v.asDouble();
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return !JSDOUBLE_IS_NaN(d) && d != 0;
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}
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JS_ASSERT(v.isBoolean());
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return v.asBoolean();
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}
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