1 | /* |
2 | * Copyright (C) 2006, 2007 Apple Inc. All rights reserved. |
3 | * |
4 | * Redistribution and use in source and binary forms, with or without |
5 | * modification, are permitted provided that the following conditions |
6 | * are met: |
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 |
10 | * notice, this list of conditions and the following disclaimer in the |
11 | * documentation and/or other materials provided with the distribution. |
12 | * |
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, |
19 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
20 | * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY |
21 | * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
22 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
23 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
24 | */ |
25 | |
26 | #include "config.h" |
27 | #include "JSValueRef.h" |
28 | |
29 | #include <wtf/Platform.h> |
30 | #include "APICast.h" |
31 | #include "APIShims.h" |
32 | #include "JSCallbackObject.h" |
33 | |
34 | #include <runtime/JSGlobalObject.h> |
35 | #include <runtime/JSString.h> |
36 | #include <runtime/Operations.h> |
37 | #include <runtime/Protect.h> |
38 | #include <runtime/UString.h> |
39 | #include <runtime/JSValue.h> |
40 | |
41 | #include <wtf/Assertions.h> |
42 | |
43 | #include <algorithm> // for std::min |
44 | |
45 | using namespace JSC; |
46 | |
47 | ::JSType JSValueGetType(JSContextRef ctx, JSValueRef value) |
48 | { |
49 | ExecState* exec = toJS(c: ctx); |
50 | APIEntryShim entryShim(exec); |
51 | |
52 | JSValue jsValue = toJS(exec, v: value); |
53 | |
54 | if (jsValue.isUndefined()) |
55 | return kJSTypeUndefined; |
56 | if (jsValue.isNull()) |
57 | return kJSTypeNull; |
58 | if (jsValue.isBoolean()) |
59 | return kJSTypeBoolean; |
60 | if (jsValue.isNumber()) |
61 | return kJSTypeNumber; |
62 | if (jsValue.isString()) |
63 | return kJSTypeString; |
64 | ASSERT(jsValue.isObject()); |
65 | return kJSTypeObject; |
66 | } |
67 | |
68 | bool JSValueIsUndefined(JSContextRef ctx, JSValueRef value) |
69 | { |
70 | ExecState* exec = toJS(c: ctx); |
71 | APIEntryShim entryShim(exec); |
72 | |
73 | JSValue jsValue = toJS(exec, v: value); |
74 | return jsValue.isUndefined(); |
75 | } |
76 | |
77 | bool JSValueIsNull(JSContextRef ctx, JSValueRef value) |
78 | { |
79 | ExecState* exec = toJS(c: ctx); |
80 | APIEntryShim entryShim(exec); |
81 | |
82 | JSValue jsValue = toJS(exec, v: value); |
83 | return jsValue.isNull(); |
84 | } |
85 | |
86 | bool JSValueIsBoolean(JSContextRef ctx, JSValueRef value) |
87 | { |
88 | ExecState* exec = toJS(c: ctx); |
89 | APIEntryShim entryShim(exec); |
90 | |
91 | JSValue jsValue = toJS(exec, v: value); |
92 | return jsValue.isBoolean(); |
93 | } |
94 | |
95 | bool JSValueIsNumber(JSContextRef ctx, JSValueRef value) |
96 | { |
97 | ExecState* exec = toJS(c: ctx); |
98 | APIEntryShim entryShim(exec); |
99 | |
100 | JSValue jsValue = toJS(exec, v: value); |
101 | return jsValue.isNumber(); |
102 | } |
103 | |
104 | bool JSValueIsString(JSContextRef ctx, JSValueRef value) |
105 | { |
106 | ExecState* exec = toJS(c: ctx); |
107 | APIEntryShim entryShim(exec); |
108 | |
109 | JSValue jsValue = toJS(exec, v: value); |
110 | return jsValue.isString(); |
111 | } |
112 | |
113 | bool JSValueIsObject(JSContextRef ctx, JSValueRef value) |
114 | { |
115 | ExecState* exec = toJS(c: ctx); |
116 | APIEntryShim entryShim(exec); |
117 | |
118 | JSValue jsValue = toJS(exec, v: value); |
119 | return jsValue.isObject(); |
120 | } |
121 | |
122 | bool JSValueIsObjectOfClass(JSContextRef ctx, JSValueRef value, JSClassRef jsClass) |
123 | { |
124 | ExecState* exec = toJS(c: ctx); |
125 | APIEntryShim entryShim(exec); |
126 | |
127 | JSValue jsValue = toJS(exec, v: value); |
128 | |
129 | if (JSObject* o = jsValue.getObject()) { |
130 | if (o->inherits(info: &JSCallbackObject<JSGlobalObject>::info)) |
131 | return static_cast<JSCallbackObject<JSGlobalObject>*>(o)->inherits(c: jsClass); |
132 | else if (o->inherits(info: &JSCallbackObject<JSObject>::info)) |
133 | return static_cast<JSCallbackObject<JSObject>*>(o)->inherits(c: jsClass); |
134 | } |
135 | return false; |
136 | } |
137 | |
138 | bool JSValueIsEqual(JSContextRef ctx, JSValueRef a, JSValueRef b, JSValueRef* exception) |
139 | { |
140 | ExecState* exec = toJS(c: ctx); |
141 | APIEntryShim entryShim(exec); |
142 | |
143 | JSValue jsA = toJS(exec, v: a); |
144 | JSValue jsB = toJS(exec, v: b); |
145 | |
146 | bool result = JSValue::equal(exec, v1: jsA, v2: jsB); // false if an exception is thrown |
147 | if (exec->hadException()) { |
148 | if (exception) |
149 | *exception = toRef(exec, v: exec->exception()); |
150 | exec->clearException(); |
151 | } |
152 | return result; |
153 | } |
154 | |
155 | bool JSValueIsStrictEqual(JSContextRef ctx, JSValueRef a, JSValueRef b) |
156 | { |
157 | ExecState* exec = toJS(c: ctx); |
158 | APIEntryShim entryShim(exec); |
159 | |
160 | JSValue jsA = toJS(exec, v: a); |
161 | JSValue jsB = toJS(exec, v: b); |
162 | |
163 | return JSValue::strictEqual(exec, v1: jsA, v2: jsB); |
164 | } |
165 | |
166 | bool JSValueIsInstanceOfConstructor(JSContextRef ctx, JSValueRef value, JSObjectRef constructor, JSValueRef* exception) |
167 | { |
168 | ExecState* exec = toJS(c: ctx); |
169 | APIEntryShim entryShim(exec); |
170 | |
171 | JSValue jsValue = toJS(exec, v: value); |
172 | |
173 | JSObject* jsConstructor = toJS(o: constructor); |
174 | if (!jsConstructor->structure()->typeInfo().implementsHasInstance()) |
175 | return false; |
176 | bool result = jsConstructor->hasInstance(exec, jsValue, prototypeProperty: jsConstructor->get(exec, propertyName: exec->propertyNames().prototype)); // false if an exception is thrown |
177 | if (exec->hadException()) { |
178 | if (exception) |
179 | *exception = toRef(exec, v: exec->exception()); |
180 | exec->clearException(); |
181 | } |
182 | return result; |
183 | } |
184 | |
185 | JSValueRef JSValueMakeUndefined(JSContextRef ctx) |
186 | { |
187 | ExecState* exec = toJS(c: ctx); |
188 | APIEntryShim entryShim(exec); |
189 | |
190 | return toRef(exec, v: jsUndefined()); |
191 | } |
192 | |
193 | JSValueRef JSValueMakeNull(JSContextRef ctx) |
194 | { |
195 | ExecState* exec = toJS(c: ctx); |
196 | APIEntryShim entryShim(exec); |
197 | |
198 | return toRef(exec, v: jsNull()); |
199 | } |
200 | |
201 | JSValueRef JSValueMakeBoolean(JSContextRef ctx, bool value) |
202 | { |
203 | ExecState* exec = toJS(c: ctx); |
204 | APIEntryShim entryShim(exec); |
205 | |
206 | return toRef(exec, v: jsBoolean(b: value)); |
207 | } |
208 | |
209 | JSValueRef JSValueMakeNumber(JSContextRef ctx, double value) |
210 | { |
211 | ExecState* exec = toJS(c: ctx); |
212 | APIEntryShim entryShim(exec); |
213 | |
214 | return toRef(exec, v: jsNumber(exec, d: value)); |
215 | } |
216 | |
217 | JSValueRef JSValueMakeString(JSContextRef ctx, JSStringRef string) |
218 | { |
219 | ExecState* exec = toJS(c: ctx); |
220 | APIEntryShim entryShim(exec); |
221 | |
222 | return toRef(exec, v: jsString(exec, s: string->ustring())); |
223 | } |
224 | |
225 | bool JSValueToBoolean(JSContextRef ctx, JSValueRef value) |
226 | { |
227 | ExecState* exec = toJS(c: ctx); |
228 | APIEntryShim entryShim(exec); |
229 | |
230 | JSValue jsValue = toJS(exec, v: value); |
231 | return jsValue.toBoolean(exec); |
232 | } |
233 | |
234 | double JSValueToNumber(JSContextRef ctx, JSValueRef value, JSValueRef* exception) |
235 | { |
236 | ExecState* exec = toJS(c: ctx); |
237 | APIEntryShim entryShim(exec); |
238 | |
239 | JSValue jsValue = toJS(exec, v: value); |
240 | |
241 | double number = jsValue.toNumber(exec); |
242 | if (exec->hadException()) { |
243 | if (exception) |
244 | *exception = toRef(exec, v: exec->exception()); |
245 | exec->clearException(); |
246 | number = NaN; |
247 | } |
248 | return number; |
249 | } |
250 | |
251 | JSStringRef JSValueToStringCopy(JSContextRef ctx, JSValueRef value, JSValueRef* exception) |
252 | { |
253 | ExecState* exec = toJS(c: ctx); |
254 | APIEntryShim entryShim(exec); |
255 | |
256 | JSValue jsValue = toJS(exec, v: value); |
257 | |
258 | RefPtr<OpaqueJSString> stringRef(OpaqueJSString::create(jsValue.toString(exec))); |
259 | if (exec->hadException()) { |
260 | if (exception) |
261 | *exception = toRef(exec, v: exec->exception()); |
262 | exec->clearException(); |
263 | stringRef.clear(); |
264 | } |
265 | return stringRef.release().releaseRef(); |
266 | } |
267 | |
268 | JSObjectRef JSValueToObject(JSContextRef ctx, JSValueRef value, JSValueRef* exception) |
269 | { |
270 | ExecState* exec = toJS(c: ctx); |
271 | APIEntryShim entryShim(exec); |
272 | |
273 | JSValue jsValue = toJS(exec, v: value); |
274 | |
275 | JSObjectRef objectRef = toRef(o: jsValue.toObject(exec)); |
276 | if (exec->hadException()) { |
277 | if (exception) |
278 | *exception = toRef(exec, v: exec->exception()); |
279 | exec->clearException(); |
280 | objectRef = 0; |
281 | } |
282 | return objectRef; |
283 | } |
284 | |
285 | void JSValueProtect(JSContextRef ctx, JSValueRef value) |
286 | { |
287 | ExecState* exec = toJS(c: ctx); |
288 | APIEntryShim entryShim(exec); |
289 | |
290 | JSValue jsValue = toJSForGC(exec, v: value); |
291 | gcProtect(value: jsValue); |
292 | } |
293 | |
294 | void JSValueUnprotect(JSContextRef ctx, JSValueRef value) |
295 | { |
296 | ExecState* exec = toJS(c: ctx); |
297 | APIEntryShim entryShim(exec); |
298 | |
299 | JSValue jsValue = toJSForGC(exec, v: value); |
300 | gcUnprotect(value: jsValue); |
301 | } |
302 | |