2 * Copyright (C) 2006, 2007 Apple Inc. All rights reserved.
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
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11 * documentation and/or other materials provided with the distribution.
13 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 #include "JSValueRef.h"
31 #include "JSCallbackObject.h"
33 #include <runtime/JSGlobalObject.h>
34 #include <runtime/JSONObject.h>
35 #include <runtime/JSString.h>
36 #include <runtime/LiteralParser.h>
37 #include <runtime/Operations.h>
38 #include <runtime/Protect.h>
39 #include <runtime/UString.h>
40 #include <runtime/JSValue.h>
42 #include <wtf/Assertions.h>
43 #include <wtf/text/StringHash.h>
45 #include <algorithm> // for std::min
49 ::JSType JSValueGetType(JSContextRef ctx, JSValueRef value)
51 ExecState* exec = toJS(ctx);
52 APIEntryShim entryShim(exec);
54 JSValue jsValue = toJS(exec, value);
56 if (jsValue.isUndefined())
57 return kJSTypeUndefined;
60 if (jsValue.isBoolean())
61 return kJSTypeBoolean;
62 if (jsValue.isNumber())
64 if (jsValue.isString())
66 ASSERT(jsValue.isObject());
70 bool JSValueIsUndefined(JSContextRef ctx, JSValueRef value)
72 ExecState* exec = toJS(ctx);
73 APIEntryShim entryShim(exec);
75 JSValue jsValue = toJS(exec, value);
76 return jsValue.isUndefined();
79 bool JSValueIsNull(JSContextRef ctx, JSValueRef value)
81 ExecState* exec = toJS(ctx);
82 APIEntryShim entryShim(exec);
84 JSValue jsValue = toJS(exec, value);
85 return jsValue.isNull();
88 bool JSValueIsBoolean(JSContextRef ctx, JSValueRef value)
90 ExecState* exec = toJS(ctx);
91 APIEntryShim entryShim(exec);
93 JSValue jsValue = toJS(exec, value);
94 return jsValue.isBoolean();
97 bool JSValueIsNumber(JSContextRef ctx, JSValueRef value)
99 ExecState* exec = toJS(ctx);
100 APIEntryShim entryShim(exec);
102 JSValue jsValue = toJS(exec, value);
103 return jsValue.isNumber();
106 bool JSValueIsString(JSContextRef ctx, JSValueRef value)
108 ExecState* exec = toJS(ctx);
109 APIEntryShim entryShim(exec);
111 JSValue jsValue = toJS(exec, value);
112 return jsValue.isString();
115 bool JSValueIsObject(JSContextRef ctx, JSValueRef value)
117 ExecState* exec = toJS(ctx);
118 APIEntryShim entryShim(exec);
120 JSValue jsValue = toJS(exec, value);
121 return jsValue.isObject();
124 bool JSValueIsObjectOfClass(JSContextRef ctx, JSValueRef value, JSClassRef jsClass)
126 ExecState* exec = toJS(ctx);
127 APIEntryShim entryShim(exec);
129 JSValue jsValue = toJS(exec, value);
131 if (JSObject* o = jsValue.getObject()) {
132 if (o->inherits(&JSCallbackObject<JSGlobalObject>::s_info))
133 return static_cast<JSCallbackObject<JSGlobalObject>*>(o)->inherits(jsClass);
134 if (o->inherits(&JSCallbackObject<JSNonFinalObject>::s_info))
135 return static_cast<JSCallbackObject<JSNonFinalObject>*>(o)->inherits(jsClass);
140 bool JSValueIsEqual(JSContextRef ctx, JSValueRef a, JSValueRef b, JSValueRef* exception)
142 ExecState* exec = toJS(ctx);
143 APIEntryShim entryShim(exec);
145 JSValue jsA = toJS(exec, a);
146 JSValue jsB = toJS(exec, b);
148 bool result = JSValue::equal(exec, jsA, jsB); // false if an exception is thrown
149 if (exec->hadException()) {
151 *exception = toRef(exec, exec->exception());
152 exec->clearException();
157 bool JSValueIsStrictEqual(JSContextRef ctx, JSValueRef a, JSValueRef b)
159 ExecState* exec = toJS(ctx);
160 APIEntryShim entryShim(exec);
162 JSValue jsA = toJS(exec, a);
163 JSValue jsB = toJS(exec, b);
165 return JSValue::strictEqual(exec, jsA, jsB);
168 bool JSValueIsInstanceOfConstructor(JSContextRef ctx, JSValueRef value, JSObjectRef constructor, JSValueRef* exception)
170 ExecState* exec = toJS(ctx);
171 APIEntryShim entryShim(exec);
173 JSValue jsValue = toJS(exec, value);
175 JSObject* jsConstructor = toJS(constructor);
176 if (!jsConstructor->structure()->typeInfo().implementsHasInstance())
178 bool result = jsConstructor->hasInstance(exec, jsValue, jsConstructor->get(exec, exec->propertyNames().prototype)); // false if an exception is thrown
179 if (exec->hadException()) {
181 *exception = toRef(exec, exec->exception());
182 exec->clearException();
187 JSValueRef JSValueMakeUndefined(JSContextRef ctx)
189 ExecState* exec = toJS(ctx);
190 APIEntryShim entryShim(exec);
192 return toRef(exec, jsUndefined());
195 JSValueRef JSValueMakeNull(JSContextRef ctx)
197 ExecState* exec = toJS(ctx);
198 APIEntryShim entryShim(exec);
200 return toRef(exec, jsNull());
203 JSValueRef JSValueMakeBoolean(JSContextRef ctx, bool value)
205 ExecState* exec = toJS(ctx);
206 APIEntryShim entryShim(exec);
208 return toRef(exec, jsBoolean(value));
211 JSValueRef JSValueMakeNumber(JSContextRef ctx, double value)
213 ExecState* exec = toJS(ctx);
214 APIEntryShim entryShim(exec);
216 // Our JSValue representation relies on a standard bit pattern for NaN. NaNs
217 // generated internally to JavaScriptCore naturally have that representation,
218 // but an external NaN might not.
220 value = std::numeric_limits<double>::quiet_NaN();
222 return toRef(exec, jsNumber(value));
225 JSValueRef JSValueMakeString(JSContextRef ctx, JSStringRef string)
227 ExecState* exec = toJS(ctx);
228 APIEntryShim entryShim(exec);
230 return toRef(exec, jsString(exec, string->ustring()));
233 JSValueRef JSValueMakeFromJSONString(JSContextRef ctx, JSStringRef string)
235 ExecState* exec = toJS(ctx);
236 APIEntryShim entryShim(exec);
237 UString str = string->ustring();
238 LiteralParser parser(exec, str.characters(), str.length(), LiteralParser::StrictJSON);
239 return toRef(exec, parser.tryLiteralParse());
242 JSStringRef JSValueCreateJSONString(JSContextRef ctx, JSValueRef apiValue, unsigned indent, JSValueRef* exception)
244 ExecState* exec = toJS(ctx);
245 APIEntryShim entryShim(exec);
246 JSValue value = toJS(exec, apiValue);
247 UString result = JSONStringify(exec, value, indent);
250 if (exec->hadException()) {
252 *exception = toRef(exec, exec->exception());
253 exec->clearException();
256 return OpaqueJSString::create(result).leakRef();
259 bool JSValueToBoolean(JSContextRef ctx, JSValueRef value)
261 ExecState* exec = toJS(ctx);
262 APIEntryShim entryShim(exec);
264 JSValue jsValue = toJS(exec, value);
265 return jsValue.toBoolean(exec);
268 double JSValueToNumber(JSContextRef ctx, JSValueRef value, JSValueRef* exception)
270 ExecState* exec = toJS(ctx);
271 APIEntryShim entryShim(exec);
273 JSValue jsValue = toJS(exec, value);
275 double number = jsValue.toNumber(exec);
276 if (exec->hadException()) {
278 *exception = toRef(exec, exec->exception());
279 exec->clearException();
280 number = std::numeric_limits<double>::quiet_NaN();
285 JSStringRef JSValueToStringCopy(JSContextRef ctx, JSValueRef value, JSValueRef* exception)
287 ExecState* exec = toJS(ctx);
288 APIEntryShim entryShim(exec);
290 JSValue jsValue = toJS(exec, value);
292 RefPtr<OpaqueJSString> stringRef(OpaqueJSString::create(jsValue.toString(exec)));
293 if (exec->hadException()) {
295 *exception = toRef(exec, exec->exception());
296 exec->clearException();
299 return stringRef.release().leakRef();
302 JSObjectRef JSValueToObject(JSContextRef ctx, JSValueRef value, JSValueRef* exception)
304 ExecState* exec = toJS(ctx);
305 APIEntryShim entryShim(exec);
307 JSValue jsValue = toJS(exec, value);
309 JSObjectRef objectRef = toRef(jsValue.toObject(exec));
310 if (exec->hadException()) {
312 *exception = toRef(exec, exec->exception());
313 exec->clearException();
319 void JSValueProtect(JSContextRef ctx, JSValueRef value)
321 ExecState* exec = toJS(ctx);
322 APIEntryShim entryShim(exec);
324 JSValue jsValue = toJSForGC(exec, value);
328 void JSValueUnprotect(JSContextRef ctx, JSValueRef value)
330 ExecState* exec = toJS(ctx);
331 APIEntryShim entryShim(exec);
333 JSValue jsValue = toJSForGC(exec, value);
334 gcUnprotect(jsValue);