1 | /* |
2 | * Copyright (C) 1999-2002 Harri Porten (porten@kde.org) |
3 | * Copyright (C) 2001 Peter Kelly (pmk@post.com) |
4 | * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved. |
5 | * Copyright (C) 2007 Cameron Zwarich (cwzwarich@uwaterloo.ca) |
6 | * Copyright (C) 2007 Maks Orlovich |
7 | * Copyright (C) 2007 Eric Seidel <eric@webkit.org> |
8 | * |
9 | * This library is free software; you can redistribute it and/or |
10 | * modify it under the terms of the GNU Library General Public |
11 | * License as published by the Free Software Foundation; either |
12 | * version 2 of the License, or (at your option) any later version. |
13 | * |
14 | * This library is distributed in the hope that it will be useful, |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
17 | * Library General Public License for more details. |
18 | * |
19 | * You should have received a copy of the GNU Library General Public License |
20 | * along with this library; see the file COPYING.LIB. If not, write to |
21 | * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
22 | * Boston, MA 02110-1301, USA. |
23 | * |
24 | */ |
25 | |
26 | #include "config.h" |
27 | #include "Nodes.h" |
28 | #include "NodeConstructors.h" |
29 | |
30 | #include "BytecodeGenerator.h" |
31 | #include "CallFrame.h" |
32 | #include "Debugger.h" |
33 | #include "JIT.h" |
34 | #include "JSFunction.h" |
35 | #include "JSGlobalObject.h" |
36 | #include "JSStaticScopeObject.h" |
37 | #include "LabelScope.h" |
38 | #include "Lexer.h" |
39 | #include "Operations.h" |
40 | #include "Parser.h" |
41 | #include "PropertyNameArray.h" |
42 | #include "RegExpObject.h" |
43 | #include "SamplingTool.h" |
44 | #include <wtf/Assertions.h> |
45 | #include <wtf/RefCountedLeakCounter.h> |
46 | #include <wtf/Threading.h> |
47 | |
48 | using namespace WTF; |
49 | |
50 | namespace JSC { |
51 | |
52 | |
53 | // ------------------------------ StatementNode -------------------------------- |
54 | |
55 | void StatementNode::setLoc(int firstLine, int lastLine) |
56 | { |
57 | m_line = firstLine; |
58 | m_lastLine = lastLine; |
59 | } |
60 | |
61 | // ------------------------------ SourceElements -------------------------------- |
62 | |
63 | void SourceElements::append(StatementNode* statement) |
64 | { |
65 | if (statement->isEmptyStatement()) |
66 | return; |
67 | m_statements.append(val: statement); |
68 | } |
69 | |
70 | inline StatementNode* SourceElements::singleStatement() const |
71 | { |
72 | size_t size = m_statements.size(); |
73 | return size == 1 ? m_statements[0] : 0; |
74 | } |
75 | |
76 | // -----------------------------ScopeNodeData --------------------------- |
77 | |
78 | ScopeNodeData::ScopeNodeData(ParserArena& arena, SourceElements* statements, VarStack* varStack, FunctionStack* funcStack, int numConstants) |
79 | : m_numConstants(numConstants) |
80 | , m_statements(statements) |
81 | { |
82 | m_arena.swap(otherArena&: arena); |
83 | if (varStack) |
84 | m_varStack.swap(other&: *varStack); |
85 | if (funcStack) |
86 | m_functionStack.swap(other&: *funcStack); |
87 | } |
88 | |
89 | // ------------------------------ ScopeNode ----------------------------- |
90 | |
91 | ScopeNode::ScopeNode(JSGlobalData* globalData) |
92 | : StatementNode(globalData) |
93 | , ParserArenaRefCounted(globalData) |
94 | , m_features(NoFeatures) |
95 | { |
96 | } |
97 | |
98 | ScopeNode::ScopeNode(JSGlobalData* globalData, const SourceCode& source, SourceElements* children, VarStack* varStack, FunctionStack* funcStack, CodeFeatures features, int numConstants) |
99 | : StatementNode(globalData) |
100 | , ParserArenaRefCounted(globalData) |
101 | , m_data(new ScopeNodeData(globalData->parser->arena(), children, varStack, funcStack, numConstants)) |
102 | , m_features(features) |
103 | , m_source(source) |
104 | { |
105 | } |
106 | |
107 | StatementNode* ScopeNode::singleStatement() const |
108 | { |
109 | return m_data->m_statements ? m_data->m_statements->singleStatement() : 0; |
110 | } |
111 | |
112 | // ------------------------------ ProgramNode ----------------------------- |
113 | |
114 | inline ProgramNode::ProgramNode(JSGlobalData* globalData, SourceElements* children, VarStack* varStack, FunctionStack* funcStack, const SourceCode& source, CodeFeatures features, int numConstants) |
115 | : ScopeNode(globalData, source, children, varStack, funcStack, features, numConstants) |
116 | { |
117 | } |
118 | |
119 | PassRefPtr<ProgramNode> ProgramNode::create(JSGlobalData* globalData, SourceElements* children, VarStack* varStack, FunctionStack* funcStack, const SourceCode& source, CodeFeatures features, int numConstants) |
120 | { |
121 | RefPtr<ProgramNode> node = new ProgramNode(globalData, children, varStack, funcStack, source, features, numConstants); |
122 | |
123 | ASSERT(node->data()->m_arena.last() == node); |
124 | node->data()->m_arena.removeLast(); |
125 | ASSERT(!node->data()->m_arena.contains(node.get())); |
126 | |
127 | return node.release(); |
128 | } |
129 | |
130 | // ------------------------------ EvalNode ----------------------------- |
131 | |
132 | inline EvalNode::EvalNode(JSGlobalData* globalData, SourceElements* children, VarStack* varStack, FunctionStack* funcStack, const SourceCode& source, CodeFeatures features, int numConstants) |
133 | : ScopeNode(globalData, source, children, varStack, funcStack, features, numConstants) |
134 | { |
135 | } |
136 | |
137 | PassRefPtr<EvalNode> EvalNode::create(JSGlobalData* globalData, SourceElements* children, VarStack* varStack, FunctionStack* funcStack, const SourceCode& source, CodeFeatures features, int numConstants) |
138 | { |
139 | RefPtr<EvalNode> node = new EvalNode(globalData, children, varStack, funcStack, source, features, numConstants); |
140 | |
141 | ASSERT(node->data()->m_arena.last() == node); |
142 | node->data()->m_arena.removeLast(); |
143 | ASSERT(!node->data()->m_arena.contains(node.get())); |
144 | |
145 | return node.release(); |
146 | } |
147 | |
148 | // ------------------------------ FunctionBodyNode ----------------------------- |
149 | |
150 | FunctionParameters::FunctionParameters(ParameterNode* firstParameter) |
151 | { |
152 | for (ParameterNode* parameter = firstParameter; parameter; parameter = parameter->nextParam()) |
153 | append(val: parameter->ident()); |
154 | } |
155 | |
156 | inline FunctionBodyNode::FunctionBodyNode(JSGlobalData* globalData) |
157 | : ScopeNode(globalData) |
158 | { |
159 | } |
160 | |
161 | inline FunctionBodyNode::FunctionBodyNode(JSGlobalData* globalData, SourceElements* children, VarStack* varStack, FunctionStack* funcStack, const SourceCode& sourceCode, CodeFeatures features, int numConstants) |
162 | : ScopeNode(globalData, sourceCode, children, varStack, funcStack, features, numConstants) |
163 | { |
164 | } |
165 | |
166 | void FunctionBodyNode::finishParsing(const SourceCode& source, ParameterNode* firstParameter, const Identifier& ident) |
167 | { |
168 | setSource(source); |
169 | finishParsing(FunctionParameters::create(firstParameter), ident); |
170 | } |
171 | |
172 | void FunctionBodyNode::finishParsing(PassRefPtr<FunctionParameters> parameters, const Identifier& ident) |
173 | { |
174 | ASSERT(!source().isNull()); |
175 | m_parameters = parameters; |
176 | m_ident = ident; |
177 | } |
178 | |
179 | FunctionBodyNode* FunctionBodyNode::create(JSGlobalData* globalData) |
180 | { |
181 | return new FunctionBodyNode(globalData); |
182 | } |
183 | |
184 | PassRefPtr<FunctionBodyNode> FunctionBodyNode::create(JSGlobalData* globalData, SourceElements* children, VarStack* varStack, FunctionStack* funcStack, const SourceCode& sourceCode, CodeFeatures features, int numConstants) |
185 | { |
186 | RefPtr<FunctionBodyNode> node = new FunctionBodyNode(globalData, children, varStack, funcStack, sourceCode, features, numConstants); |
187 | |
188 | ASSERT(node->data()->m_arena.last() == node); |
189 | node->data()->m_arena.removeLast(); |
190 | ASSERT(!node->data()->m_arena.contains(node.get())); |
191 | |
192 | return node.release(); |
193 | } |
194 | |
195 | } // namespace JSC |
196 | |