1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
|
/*
* Copyright (C) 2006, 2007 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "JSBase.h"
#include "JSBasePrivate.h"
#include "APICast.h"
#include "APIShims.h"
#include "CallFrame.h"
#include "Completion.h"
#include "InitializeThreading.h"
#include "JSGlobalObject.h"
#include "JSLock.h"
#include "JSObject.h"
#include "OpaqueJSString.h"
#include "Operations.h"
#include "SourceCode.h"
#include <wtf/text/StringHash.h>
using namespace JSC;
JSValueRef JSEvaluateScript(JSContextRef ctx, JSStringRef script, JSObjectRef thisObject, JSStringRef sourceURL, int startingLineNumber, JSValueRef* exception)
{
if (!ctx) {
ASSERT_NOT_REACHED();
return 0;
}
ExecState* exec = toJS(ctx);
APIEntryShim entryShim(exec);
JSObject* jsThisObject = toJS(thisObject);
// evaluate sets "this" to the global object if it is NULL
JSGlobalObject* globalObject = exec->dynamicGlobalObject();
SourceCode source = makeSource(script->string(), sourceURL->string(), TextPosition(OrdinalNumber::fromOneBasedInt(startingLineNumber), OrdinalNumber::first()));
JSValue evaluationException;
JSValue returnValue = evaluate(globalObject->globalExec(), source, jsThisObject, &evaluationException);
if (evaluationException) {
if (exception)
*exception = toRef(exec, evaluationException);
return 0;
}
if (returnValue)
return toRef(exec, returnValue);
// happens, for example, when the only statement is an empty (';') statement
return toRef(exec, jsUndefined());
}
bool JSCheckScriptSyntax(JSContextRef ctx, JSStringRef script, JSStringRef sourceURL, int startingLineNumber, JSValueRef* exception)
{
if (!ctx) {
ASSERT_NOT_REACHED();
return false;
}
ExecState* exec = toJS(ctx);
APIEntryShim entryShim(exec);
SourceCode source = makeSource(script->string(), sourceURL->string(), TextPosition(OrdinalNumber::fromOneBasedInt(startingLineNumber), OrdinalNumber::first()));
JSValue syntaxException;
bool isValidSyntax = checkSyntax(exec->dynamicGlobalObject()->globalExec(), source, &syntaxException);
if (!isValidSyntax) {
if (exception)
*exception = toRef(exec, syntaxException);
return false;
}
return true;
}
void JSGarbageCollect(JSContextRef ctx)
{
// We used to recommend passing NULL as an argument here, which caused the only heap to be collected.
// As there is no longer a shared heap, the previously recommended usage became a no-op (but the GC
// will happen when the context group is destroyed).
// Because the function argument was originally ignored, some clients may pass their released context here,
// in which case there is a risk of crashing if another thread performs GC on the same heap in between.
if (!ctx)
return;
ExecState* exec = toJS(ctx);
APIEntryShim entryShim(exec, false);
exec->vm().heap.reportAbandonedObjectGraph();
}
void JSReportExtraMemoryCost(JSContextRef ctx, size_t size)
{
if (!ctx) {
ASSERT_NOT_REACHED();
return;
}
ExecState* exec = toJS(ctx);
APIEntryShim entryShim(exec);
exec->vm().heap.reportExtraMemoryCost(size);
}
extern "C" JS_EXPORT void JSSynchronousGarbageCollectForDebugging(JSContextRef);
void JSSynchronousGarbageCollectForDebugging(JSContextRef ctx)
{
if (!ctx)
return;
ExecState* exec = toJS(ctx);
APIEntryShim entryShim(exec);
exec->vm().heap.collectAllGarbage();
}
|
