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6 * The contents of this file are subject to the Mozilla Public License Version
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16 * The Original Code is Mozilla Communicator client code, released
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41 * JS boolean implementation.
50 #include "jsversion.h"
57 #include "jsinterpinlines.h"
58 #include "jsobjinlines.h"
62 Class js_BooleanClass = {
64 JSCLASS_HAS_RESERVED_SLOTS(1) |
65 JSCLASS_HAS_CACHED_PROTO(JSProto_Boolean),
66 PropertyStub, /* addProperty */
67 PropertyStub, /* delProperty */
68 PropertyStub, /* getProperty */
69 StrictPropertyStub, /* setProperty */
79 bool_toSource(JSContext *cx, uintN argc, Value *vp)
82 if (!GetPrimitiveThis(cx, vp, &b))
86 JS_snprintf(buf, sizeof buf, "(new Boolean(%s))", JS_BOOLEAN_STR(b));
87 JSString *str = JS_NewStringCopyZ(cx, buf);
96 bool_toString(JSContext *cx, uintN argc, Value *vp)
99 if (!GetPrimitiveThis(cx, vp, &b))
102 JSAtom *atom = cx->runtime->atomState.booleanAtoms[b ? 1 : 0];
103 JSString *str = ATOM_TO_STRING(atom);
111 bool_valueOf(JSContext *cx, uintN argc, Value *vp)
114 if (!GetPrimitiveThis(cx, vp, &b))
121 static JSFunctionSpec boolean_methods[] = {
123 JS_FN(js_toSource_str, bool_toSource, 0, 0),
125 JS_FN(js_toString_str, bool_toString, 0, 0),
126 JS_FN(js_valueOf_str, bool_valueOf, 0, 0),
127 JS_FN(js_toJSON_str, bool_valueOf, 0, 0),
132 Boolean(JSContext *cx, uintN argc, Value *vp)
134 Value *argv = vp + 2;
135 bool b = argc != 0 ? js_ValueToBoolean(argv[0]) : false;
137 if (IsConstructing(vp)) {
138 JSObject *obj = NewBuiltinClassInstance(cx, &js_BooleanClass);
141 obj->setPrimitiveThis(BooleanValue(b));
150 js_InitBooleanClass(JSContext *cx, JSObject *obj)
154 proto = js_InitClass(cx, obj, NULL, &js_BooleanClass, Boolean, 1,
155 NULL, boolean_methods, NULL, NULL);
158 proto->setPrimitiveThis(BooleanValue(false));
163 js_BooleanToString(JSContext *cx, JSBool b)
165 return ATOM_TO_STRING(cx->runtime->atomState.booleanAtoms[b ? 1 : 0]);
168 /* This function implements E-262-3 section 9.8, toString. */
170 js::BooleanToStringBuffer(JSContext *cx, JSBool b, StringBuffer &sb)
172 return b ? sb.append("true") : sb.append("false");
176 js_ValueToBoolean(const Value &v)
179 return v.toInt32() != 0;
181 return v.toString()->length() != 0;
184 if (v.isNullOrUndefined())
190 return !JSDOUBLE_IS_NaN(d) && d != 0;
192 JS_ASSERT(v.isBoolean());
193 return v.toBoolean();