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
|
/*
* Copyright (C) 1999-2001 Harri Porten (porten@kde.org)
* Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
#include "config.h"
#include "FunctionPrototype.h"
#include "Arguments.h"
#include "JSArray.h"
#include "JSFunction.h"
#include "JSString.h"
#include "JSStringBuilder.h"
#include "Interpreter.h"
#include "Lexer.h"
#include "PrototypeFunction.h"
namespace JSC {
ASSERT_CLASS_FITS_IN_CELL(FunctionPrototype);
static EncodedJSValue JSC_HOST_CALL functionProtoFuncToString(ExecState*);
static EncodedJSValue JSC_HOST_CALL functionProtoFuncApply(ExecState*);
static EncodedJSValue JSC_HOST_CALL functionProtoFuncCall(ExecState*);
FunctionPrototype::FunctionPrototype(ExecState* exec, JSGlobalObject* globalObject, NonNullPassRefPtr<Structure> structure)
: InternalFunction(&exec->globalData(), globalObject, structure, exec->propertyNames().nullIdentifier)
{
putDirectWithoutTransition(exec->propertyNames().length, jsNumber(0), DontDelete | ReadOnly | DontEnum);
}
void FunctionPrototype::addFunctionProperties(ExecState* exec, JSGlobalObject* globalObject, Structure* prototypeFunctionStructure, NativeFunctionWrapper** callFunction, NativeFunctionWrapper** applyFunction)
{
putDirectFunctionWithoutTransition(exec, new (exec) NativeFunctionWrapper(exec, globalObject, prototypeFunctionStructure, 0, exec->propertyNames().toString, functionProtoFuncToString), DontEnum);
*applyFunction = new (exec) NativeFunctionWrapper(exec, globalObject, prototypeFunctionStructure, 2, exec->propertyNames().apply, functionProtoFuncApply);
putDirectFunctionWithoutTransition(exec, *applyFunction, DontEnum);
*callFunction = new (exec) NativeFunctionWrapper(exec, globalObject, prototypeFunctionStructure, 1, exec->propertyNames().call, functionProtoFuncCall);
putDirectFunctionWithoutTransition(exec, *callFunction, DontEnum);
}
static EncodedJSValue JSC_HOST_CALL callFunctionPrototype(ExecState*)
{
return JSValue::encode(jsUndefined());
}
// ECMA 15.3.4
CallType FunctionPrototype::getCallData(CallData& callData)
{
callData.native.function = callFunctionPrototype;
return CallTypeHost;
}
// Functions
// Compatibility hack for the Optimost JavaScript library. (See <rdar://problem/6595040>.)
static inline void insertSemicolonIfNeeded(UString& functionBody)
{
ASSERT(functionBody[0] == '{');
ASSERT(functionBody[functionBody.length() - 1] == '}');
for (size_t i = functionBody.length() - 2; i > 0; --i) {
UChar ch = functionBody[i];
if (!Lexer::isWhiteSpace(ch) && !Lexer::isLineTerminator(ch)) {
if (ch != ';' && ch != '}')
functionBody = makeUString(functionBody.substringSharingImpl(0, i + 1), ";", functionBody.substringSharingImpl(i + 1, functionBody.length() - (i + 1)));
return;
}
}
}
EncodedJSValue JSC_HOST_CALL functionProtoFuncToString(ExecState* exec)
{
JSValue thisValue = exec->hostThisValue();
if (thisValue.inherits(&JSFunction::info)) {
JSFunction* function = asFunction(thisValue);
if (function->isHostFunction())
return JSValue::encode(jsMakeNontrivialString(exec, "function ", function->name(exec), "() {\n [native code]\n}"));
FunctionExecutable* executable = function->jsExecutable();
UString sourceString = executable->source().toString();
insertSemicolonIfNeeded(sourceString);
return JSValue::encode(jsMakeNontrivialString(exec, "function ", function->name(exec), "(", executable->paramString(), ") ", sourceString));
}
if (thisValue.inherits(&InternalFunction::info)) {
InternalFunction* function = asInternalFunction(thisValue);
return JSValue::encode(jsMakeNontrivialString(exec, "function ", function->name(exec), "() {\n [native code]\n}"));
}
return throwVMTypeError(exec);
}
EncodedJSValue JSC_HOST_CALL functionProtoFuncApply(ExecState* exec)
{
JSValue thisValue = exec->hostThisValue();
CallData callData;
CallType callType = getCallData(thisValue, callData);
if (callType == CallTypeNone)
return throwVMTypeError(exec);
JSValue array = exec->argument(1);
MarkedArgumentBuffer applyArgs;
if (!array.isUndefinedOrNull()) {
if (!array.isObject())
return throwVMTypeError(exec);
if (asObject(array)->classInfo() == &Arguments::info)
asArguments(array)->fillArgList(exec, applyArgs);
else if (isJSArray(&exec->globalData(), array))
asArray(array)->fillArgList(exec, applyArgs);
else if (asObject(array)->inherits(&JSArray::info)) {
unsigned length = asArray(array)->get(exec, exec->propertyNames().length).toUInt32(exec);
for (unsigned i = 0; i < length; ++i)
applyArgs.append(asArray(array)->get(exec, i));
} else
return throwVMTypeError(exec);
}
return JSValue::encode(call(exec, thisValue, callType, callData, exec->argument(0), applyArgs));
}
EncodedJSValue JSC_HOST_CALL functionProtoFuncCall(ExecState* exec)
{
JSValue thisValue = exec->hostThisValue();
CallData callData;
CallType callType = getCallData(thisValue, callData);
if (callType == CallTypeNone)
return throwVMTypeError(exec);
ArgList args(exec);
ArgList callArgs;
args.getSlice(1, callArgs);
return JSValue::encode(call(exec, thisValue, callType, callData, exec->argument(0), callArgs));
}
} // namespace JSC
|
