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
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
|
/*
* Copyright (C) 2012-2019 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 INC. AND ITS CONTRIBUTORS ``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 INC. OR ITS 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 "APICast.h"
#include "Completion.h"
#include "Exception.h"
#include "JSGlobalObjectInlines.h"
#include "JSScriptRefPrivate.h"
#include "OpaqueJSString.h"
#include "Parser.h"
#include "SourceCode.h"
#include "SourceProvider.h"
using namespace JSC;
WTF_ALLOW_UNSAFE_BUFFER_USAGE_BEGIN
struct OpaqueJSScript final : public SourceProvider {
public:
static WTF::Ref<OpaqueJSScript> create(VM& vm, const SourceOrigin& sourceOrigin, String filename, int startingLineNumber, const String& source)
{
return WTF::adoptRef(*new OpaqueJSScript(vm, sourceOrigin, WTFMove(filename), startingLineNumber, source));
}
unsigned hash() const final
{
return m_source.get().hash();
}
StringView source() const final
{
return m_source.get();
}
VM& vm() const { return m_vm; }
private:
OpaqueJSScript(VM& vm, const SourceOrigin& sourceOrigin, String&& filename, int startingLineNumber, const String& source)
: SourceProvider(sourceOrigin, WTFMove(filename), String(), SourceTaintedOrigin::Untainted, TextPosition(OrdinalNumber::fromOneBasedInt(startingLineNumber), OrdinalNumber()), SourceProviderSourceType::Program)
, m_vm(vm)
, m_source(source.isNull() ? *StringImpl::empty() : *source.impl())
{
}
~OpaqueJSScript() final { }
VM& m_vm;
Ref<StringImpl> m_source;
};
static bool parseScript(VM& vm, const SourceCode& source, ParserError& error)
{
return !!parseRootNode<ProgramNode>(
vm, source, ImplementationVisibility::Public, JSParserBuiltinMode::NotBuiltin,
NoLexicallyScopedFeatures, JSParserScriptMode::Classic, SourceParseMode::ProgramMode, error);
}
extern "C" {
JSScriptRef JSScriptCreateReferencingImmortalASCIIText(JSContextGroupRef contextGroup, JSStringRef urlString, int startingLineNumber, const char* source, size_t length, JSStringRef* errorMessage, int* errorLine)
{
auto& vm = *toJS(contextGroup);
JSLockHolder locker(&vm);
for (size_t i = 0; i < length; i++) {
if (!isASCII(source[i]))
return nullptr;
}
startingLineNumber = std::max(1, startingLineNumber);
auto sourceURL = urlString ? URL({ }, urlString->string()) : URL();
auto result = OpaqueJSScript::create(vm, SourceOrigin { sourceURL }, sourceURL.string(), startingLineNumber, String(StringImpl::createWithoutCopying({ source, length })));
ParserError error;
if (!parseScript(vm, SourceCode(result.copyRef()), error)) {
if (errorMessage)
*errorMessage = OpaqueJSString::tryCreate(error.message()).leakRef();
if (errorLine)
*errorLine = error.line();
return nullptr;
}
return &result.leakRef();
}
JSScriptRef JSScriptCreateFromString(JSContextGroupRef contextGroup, JSStringRef urlString, int startingLineNumber, JSStringRef source, JSStringRef* errorMessage, int* errorLine)
{
auto& vm = *toJS(contextGroup);
JSLockHolder locker(&vm);
startingLineNumber = std::max(1, startingLineNumber);
auto sourceURL = urlString ? URL({ }, urlString->string()) : URL();
auto result = OpaqueJSScript::create(vm, SourceOrigin { sourceURL }, sourceURL.string(), startingLineNumber, source->string());
ParserError error;
if (!parseScript(vm, SourceCode(result.copyRef()), error)) {
if (errorMessage)
*errorMessage = OpaqueJSString::tryCreate(error.message()).leakRef();
if (errorLine)
*errorLine = error.line();
return nullptr;
}
return &result.leakRef();
}
void JSScriptRetain(JSScriptRef script)
{
JSLockHolder locker(&script->vm());
script->ref();
}
void JSScriptRelease(JSScriptRef script)
{
JSLockHolder locker(&script->vm());
script->deref();
}
JSValueRef JSScriptEvaluate(JSContextRef context, JSScriptRef script, JSValueRef thisValueRef, JSValueRef* exception)
{
JSGlobalObject* globalObject = toJS(context);
VM& vm = globalObject->vm();
JSLockHolder locker(vm);
if (&script->vm() != &vm) {
RELEASE_ASSERT_NOT_REACHED();
return nullptr;
}
NakedPtr<Exception> internalException;
JSValue thisValue = thisValueRef ? toJS(globalObject, thisValueRef) : jsUndefined();
JSValue result = evaluate(globalObject, SourceCode(*script), thisValue, internalException);
if (internalException) {
if (exception)
*exception = toRef(globalObject, internalException->value());
return nullptr;
}
ASSERT(result);
return toRef(globalObject, result);
}
}
WTF_ALLOW_UNSAFE_BUFFER_USAGE_END
|
