/[jscoverage]/trunk/js/jsbool.cpp
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Annotation of /trunk/js/jsbool.cpp

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Revision 507 - (hide annotations)
Sun Jan 10 07:23:34 2010 UTC (10 years ago) by siliconforks
File size: 5844 byte(s)
Update SpiderMonkey from Firefox 3.6rc1.

1 siliconforks 507 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
2 siliconforks 332 *
3     * ***** BEGIN LICENSE BLOCK *****
4     * Version: MPL 1.1/GPL 2.0/LGPL 2.1
5     *
6     * The contents of this file are subject to the Mozilla Public License Version
7     * 1.1 (the "License"); you may not use this file except in compliance with
8     * the License. You may obtain a copy of the License at
9     * http://www.mozilla.org/MPL/
10     *
11     * Software distributed under the License is distributed on an "AS IS" basis,
12     * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
13     * for the specific language governing rights and limitations under the
14     * License.
15     *
16     * The Original Code is Mozilla Communicator client code, released
17     * March 31, 1998.
18     *
19     * The Initial Developer of the Original Code is
20     * Netscape Communications Corporation.
21     * Portions created by the Initial Developer are Copyright (C) 1998
22     * the Initial Developer. All Rights Reserved.
23     *
24     * Contributor(s):
25     *
26     * Alternatively, the contents of this file may be used under the terms of
27     * either of the GNU General Public License Version 2 or later (the "GPL"),
28     * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
29     * in which case the provisions of the GPL or the LGPL are applicable instead
30     * of those above. If you wish to allow use of your version of this file only
31     * under the terms of either the GPL or the LGPL, and not to allow others to
32     * use your version of this file under the terms of the MPL, indicate your
33     * decision by deleting the provisions above and replace them with the notice
34     * and other provisions required by the GPL or the LGPL. If you do not delete
35     * the provisions above, a recipient may use your version of this file under
36     * the terms of any one of the MPL, the GPL or the LGPL.
37     *
38     * ***** END LICENSE BLOCK ***** */
39    
40     /*
41     * JS boolean implementation.
42     */
43     #include "jstypes.h"
44 siliconforks 507 #include "jsstdint.h"
45 siliconforks 332 #include "jsutil.h" /* Added by JSIFY */
46     #include "jsapi.h"
47     #include "jsatom.h"
48     #include "jsbool.h"
49     #include "jscntxt.h"
50     #include "jsversion.h"
51     #include "jslock.h"
52     #include "jsnum.h"
53     #include "jsobj.h"
54     #include "jsstr.h"
55 siliconforks 507 #include "jsvector.h"
56 siliconforks 332
57     /* Check pseudo-booleans values. */
58 siliconforks 460 JS_STATIC_ASSERT(!(JSVAL_TRUE & JSVAL_HOLE_FLAG));
59     JS_STATIC_ASSERT(!(JSVAL_FALSE & JSVAL_HOLE_FLAG));
60     JS_STATIC_ASSERT(!(JSVAL_VOID & JSVAL_HOLE_FLAG));
61     JS_STATIC_ASSERT((JSVAL_HOLE & JSVAL_HOLE_FLAG));
62     JS_STATIC_ASSERT((JSVAL_HOLE & ~JSVAL_HOLE_FLAG) == JSVAL_VOID);
63     JS_STATIC_ASSERT(!(JSVAL_ARETURN & JSVAL_HOLE_FLAG));
64 siliconforks 332
65     JSClass js_BooleanClass = {
66     "Boolean",
67 siliconforks 507 JSCLASS_HAS_RESERVED_SLOTS(1) | JSCLASS_HAS_CACHED_PROTO(JSProto_Boolean),
68 siliconforks 332 JS_PropertyStub, JS_PropertyStub, JS_PropertyStub, JS_PropertyStub,
69 siliconforks 507 JS_EnumerateStub, JS_ResolveStub, JS_ConvertStub, NULL,
70 siliconforks 332 JSCLASS_NO_OPTIONAL_MEMBERS
71     };
72    
73     #if JS_HAS_TOSOURCE
74     #include "jsprf.h"
75    
76     static JSBool
77     bool_toSource(JSContext *cx, uintN argc, jsval *vp)
78     {
79     jsval v;
80     char buf[32];
81     JSString *str;
82    
83     if (!js_GetPrimitiveThis(cx, vp, &js_BooleanClass, &v))
84     return JS_FALSE;
85     JS_ASSERT(JSVAL_IS_BOOLEAN(v));
86     JS_snprintf(buf, sizeof buf, "(new %s(%s))",
87     js_BooleanClass.name,
88     JS_BOOLEAN_STR(JSVAL_TO_BOOLEAN(v)));
89     str = JS_NewStringCopyZ(cx, buf);
90     if (!str)
91     return JS_FALSE;
92     *vp = STRING_TO_JSVAL(str);
93     return JS_TRUE;
94     }
95     #endif
96    
97     static JSBool
98     bool_toString(JSContext *cx, uintN argc, jsval *vp)
99     {
100     jsval v;
101     JSAtom *atom;
102     JSString *str;
103    
104     if (!js_GetPrimitiveThis(cx, vp, &js_BooleanClass, &v))
105     return JS_FALSE;
106     JS_ASSERT(JSVAL_IS_BOOLEAN(v));
107     atom = cx->runtime->atomState.booleanAtoms[JSVAL_TO_BOOLEAN(v) ? 1 : 0];
108     str = ATOM_TO_STRING(atom);
109     if (!str)
110     return JS_FALSE;
111     *vp = STRING_TO_JSVAL(str);
112     return JS_TRUE;
113     }
114    
115     static JSBool
116     bool_valueOf(JSContext *cx, uintN argc, jsval *vp)
117     {
118     return js_GetPrimitiveThis(cx, vp, &js_BooleanClass, vp);
119     }
120    
121     static JSFunctionSpec boolean_methods[] = {
122     #if JS_HAS_TOSOURCE
123     JS_FN(js_toSource_str, bool_toSource, 0, JSFUN_THISP_BOOLEAN),
124     #endif
125     JS_FN(js_toString_str, bool_toString, 0, JSFUN_THISP_BOOLEAN),
126     JS_FN(js_valueOf_str, bool_valueOf, 0, JSFUN_THISP_BOOLEAN),
127 siliconforks 399 JS_FN(js_toJSON_str, bool_valueOf, 0, JSFUN_THISP_BOOLEAN),
128 siliconforks 332 JS_FS_END
129     };
130    
131     static JSBool
132     Boolean(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
133     {
134     jsval bval;
135    
136     bval = (argc != 0)
137     ? BOOLEAN_TO_JSVAL(js_ValueToBoolean(argv[0]))
138     : JSVAL_FALSE;
139 siliconforks 507 if (!JS_IsConstructing(cx))
140 siliconforks 332 *rval = bval;
141 siliconforks 507 else
142     obj->fslots[JSSLOT_PRIMITIVE_THIS] = bval;
143     return true;
144 siliconforks 332 }
145    
146     JSObject *
147     js_InitBooleanClass(JSContext *cx, JSObject *obj)
148     {
149     JSObject *proto;
150    
151     proto = JS_InitClass(cx, obj, NULL, &js_BooleanClass, Boolean, 1,
152     NULL, boolean_methods, NULL, NULL);
153     if (!proto)
154     return NULL;
155 siliconforks 507 proto->fslots[JSSLOT_PRIMITIVE_THIS] = JSVAL_FALSE;
156 siliconforks 332 return proto;
157     }
158    
159     JSString *
160     js_BooleanToString(JSContext *cx, JSBool b)
161     {
162     return ATOM_TO_STRING(cx->runtime->atomState.booleanAtoms[b ? 1 : 0]);
163     }
164    
165 siliconforks 507 /* This function implements E-262-3 section 9.8, toString. */
166 siliconforks 332 JSBool
167 siliconforks 507 js_BooleanToCharBuffer(JSContext *cx, JSBool b, JSCharBuffer &cb)
168     {
169     return b ? js_AppendLiteral(cb, "true") : js_AppendLiteral(cb, "false");
170     }
171    
172     JSBool
173 siliconforks 332 js_ValueToBoolean(jsval v)
174     {
175     if (JSVAL_IS_NULL(v) || JSVAL_IS_VOID(v))
176     return JS_FALSE;
177     if (JSVAL_IS_OBJECT(v))
178     return JS_TRUE;
179     if (JSVAL_IS_STRING(v))
180 siliconforks 507 return JSVAL_TO_STRING(v)->length() != 0;
181 siliconforks 332 if (JSVAL_IS_INT(v))
182     return JSVAL_TO_INT(v) != 0;
183     if (JSVAL_IS_DOUBLE(v)) {
184     jsdouble d;
185    
186     d = *JSVAL_TO_DOUBLE(v);
187     return !JSDOUBLE_IS_NaN(d) && d != 0;
188     }
189     JS_ASSERT(JSVAL_IS_BOOLEAN(v));
190     return JSVAL_TO_BOOLEAN(v);
191     }

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