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Diffstat (limited to 'js/src/jsbool.cpp')
| -rw-r--r-- | js/src/jsbool.cpp | 194 |
1 files changed, 194 insertions, 0 deletions
diff --git a/js/src/jsbool.cpp b/js/src/jsbool.cpp new file mode 100644 index 0000000..fb678b0 --- /dev/null +++ b/js/src/jsbool.cpp @@ -0,0 +1,194 @@ +/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- + * + * ***** BEGIN LICENSE BLOCK ***** + * Version: MPL 1.1/GPL 2.0/LGPL 2.1 + * + * The contents of this file are subject to the Mozilla Public License Version + * 1.1 (the "License"); you may not use this file except in compliance with + * the License. You may obtain a copy of the License at + * http://www.mozilla.org/MPL/ + * + * Software distributed under the License is distributed on an "AS IS" basis, + * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License + * for the specific language governing rights and limitations under the + * License. + * + * The Original Code is Mozilla Communicator client code, released + * March 31, 1998. + * + * The Initial Developer of the Original Code is + * Netscape Communications Corporation. + * Portions created by the Initial Developer are Copyright (C) 1998 + * the Initial Developer. All Rights Reserved. + * + * Contributor(s): + * + * Alternatively, the contents of this file may be used under the terms of + * either of the GNU General Public License Version 2 or later (the "GPL"), + * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"), + * in which case the provisions of the GPL or the LGPL are applicable instead + * of those above. If you wish to allow use of your version of this file only + * under the terms of either the GPL or the LGPL, and not to allow others to + * use your version of this file under the terms of the MPL, indicate your + * decision by deleting the provisions above and replace them with the notice + * and other provisions required by the GPL or the LGPL. If you do not delete + * the provisions above, a recipient may use your version of this file under + * the terms of any one of the MPL, the GPL or the LGPL. + * + * ***** END LICENSE BLOCK ***** */ + +/* + * JS boolean implementation. + */ +#include "jstypes.h" +#include "jsstdint.h" +#include "jsutil.h" +#include "jsapi.h" +#include "jsatom.h" +#include "jsbool.h" +#include "jscntxt.h" +#include "jsversion.h" +#include "jslock.h" +#include "jsnum.h" +#include "jsobj.h" +#include "jsstr.h" +#include "jsvector.h" + +#include "jsinterpinlines.h" +#include "jsobjinlines.h" + +using namespace js; + +Class js_BooleanClass = { + "Boolean", + JSCLASS_HAS_RESERVED_SLOTS(1) | + JSCLASS_HAS_CACHED_PROTO(JSProto_Boolean), + PropertyStub, /* addProperty */ + PropertyStub, /* delProperty */ + PropertyStub, /* getProperty */ + StrictPropertyStub, /* setProperty */ + EnumerateStub, + ResolveStub, + ConvertStub +}; + +#if JS_HAS_TOSOURCE +#include "jsprf.h" + +static JSBool +bool_toSource(JSContext *cx, uintN argc, Value *vp) +{ + bool b; + if (!GetPrimitiveThis(cx, vp, &b)) + return false; + + char buf[32]; + JS_snprintf(buf, sizeof buf, "(new Boolean(%s))", JS_BOOLEAN_STR(b)); + JSString *str = JS_NewStringCopyZ(cx, buf); + if (!str) + return false; + vp->setString(str); + return true; +} +#endif + +static JSBool +bool_toString(JSContext *cx, uintN argc, Value *vp) +{ + bool b; + if (!GetPrimitiveThis(cx, vp, &b)) + return false; + + JSAtom *atom = cx->runtime->atomState.booleanAtoms[b ? 1 : 0]; + JSString *str = ATOM_TO_STRING(atom); + if (!str) + return JS_FALSE; + vp->setString(str); + return JS_TRUE; +} + +static JSBool +bool_valueOf(JSContext *cx, uintN argc, Value *vp) +{ + bool b; + if (!GetPrimitiveThis(cx, vp, &b)) + return false; + + vp->setBoolean(b); + return JS_TRUE; +} + +static JSFunctionSpec boolean_methods[] = { +#if JS_HAS_TOSOURCE + JS_FN(js_toSource_str, bool_toSource, 0, 0), +#endif + JS_FN(js_toString_str, bool_toString, 0, 0), + JS_FN(js_valueOf_str, bool_valueOf, 0, 0), + JS_FN(js_toJSON_str, bool_valueOf, 0, 0), + JS_FS_END +}; + +static JSBool +Boolean(JSContext *cx, uintN argc, Value *vp) +{ + Value *argv = vp + 2; + bool b = argc != 0 ? js_ValueToBoolean(argv[0]) : false; + + if (IsConstructing(vp)) { + JSObject *obj = NewBuiltinClassInstance(cx, &js_BooleanClass); + if (!obj) + return false; + obj->setPrimitiveThis(BooleanValue(b)); + vp->setObject(*obj); + } else { + vp->setBoolean(b); + } + return true; +} + +JSObject * +js_InitBooleanClass(JSContext *cx, JSObject *obj) +{ + JSObject *proto; + + proto = js_InitClass(cx, obj, NULL, &js_BooleanClass, Boolean, 1, + NULL, boolean_methods, NULL, NULL); + if (!proto) + return NULL; + proto->setPrimitiveThis(BooleanValue(false)); + return proto; +} + +JSString * +js_BooleanToString(JSContext *cx, JSBool b) +{ + return ATOM_TO_STRING(cx->runtime->atomState.booleanAtoms[b ? 1 : 0]); +} + +/* This function implements E-262-3 section 9.8, toString. */ +bool +js::BooleanToStringBuffer(JSContext *cx, JSBool b, StringBuffer &sb) +{ + return b ? sb.append("true") : sb.append("false"); +} + +JSBool +js_ValueToBoolean(const Value &v) +{ + if (v.isInt32()) + return v.toInt32() != 0; + if (v.isString()) + return v.toString()->length() != 0; + if (v.isObject()) + return JS_TRUE; + if (v.isNullOrUndefined()) + return JS_FALSE; + if (v.isDouble()) { + jsdouble d; + + d = v.toDouble(); + return !JSDOUBLE_IS_NaN(d) && d != 0; + } + JS_ASSERT(v.isBoolean()); + return v.toBoolean(); +} |