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Side by Side Diff: src/preparse-data.h

Issue 1481613002: Create ast/ and parsing/ subdirectories and move appropriate files (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: Rebase Created 5 years ago
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1 // Copyright 2011 the V8 project authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #ifndef V8_PREPARSE_DATA_H_
6 #define V8_PREPARSE_DATA_H_
7
8 #include "src/allocation.h"
9 #include "src/hashmap.h"
10 #include "src/messages.h"
11 #include "src/preparse-data-format.h"
12
13 namespace v8 {
14 namespace internal {
15
16 class ScriptData {
17 public:
18 ScriptData(const byte* data, int length);
19 ~ScriptData() {
20 if (owns_data_) DeleteArray(data_);
21 }
22
23 const byte* data() const { return data_; }
24 int length() const { return length_; }
25 bool rejected() const { return rejected_; }
26
27 void Reject() { rejected_ = true; }
28
29 void AcquireDataOwnership() {
30 DCHECK(!owns_data_);
31 owns_data_ = true;
32 }
33
34 void ReleaseDataOwnership() {
35 DCHECK(owns_data_);
36 owns_data_ = false;
37 }
38
39 private:
40 bool owns_data_ : 1;
41 bool rejected_ : 1;
42 const byte* data_;
43 int length_;
44
45 DISALLOW_COPY_AND_ASSIGN(ScriptData);
46 };
47
48 // Abstract interface for preparse data recorder.
49 class ParserRecorder {
50 public:
51 ParserRecorder() { }
52 virtual ~ParserRecorder() { }
53
54 // Logs the scope and some details of a function literal in the source.
55 virtual void LogFunction(int start, int end, int literals, int properties,
56 LanguageMode language_mode, bool uses_super_property,
57 bool calls_eval) = 0;
58
59 // Logs an error message and marks the log as containing an error.
60 // Further logging will be ignored, and ExtractData will return a vector
61 // representing the error only.
62 virtual void LogMessage(int start, int end, MessageTemplate::Template message,
63 const char* argument_opt,
64 ParseErrorType error_type) = 0;
65
66 private:
67 DISALLOW_COPY_AND_ASSIGN(ParserRecorder);
68 };
69
70
71 class SingletonLogger : public ParserRecorder {
72 public:
73 SingletonLogger()
74 : has_error_(false), start_(-1), end_(-1), error_type_(kSyntaxError) {}
75 virtual ~SingletonLogger() {}
76
77 void Reset() { has_error_ = false; }
78
79 virtual void LogFunction(int start, int end, int literals, int properties,
80 LanguageMode language_mode, bool uses_super_property,
81 bool calls_eval) {
82 DCHECK(!has_error_);
83 start_ = start;
84 end_ = end;
85 literals_ = literals;
86 properties_ = properties;
87 language_mode_ = language_mode;
88 uses_super_property_ = uses_super_property;
89 calls_eval_ = calls_eval;
90 }
91
92 // Logs an error message and marks the log as containing an error.
93 // Further logging will be ignored, and ExtractData will return a vector
94 // representing the error only.
95 virtual void LogMessage(int start, int end, MessageTemplate::Template message,
96 const char* argument_opt, ParseErrorType error_type) {
97 if (has_error_) return;
98 has_error_ = true;
99 start_ = start;
100 end_ = end;
101 message_ = message;
102 argument_opt_ = argument_opt;
103 error_type_ = error_type;
104 }
105
106 bool has_error() const { return has_error_; }
107
108 int start() const { return start_; }
109 int end() const { return end_; }
110 int literals() const {
111 DCHECK(!has_error_);
112 return literals_;
113 }
114 int properties() const {
115 DCHECK(!has_error_);
116 return properties_;
117 }
118 LanguageMode language_mode() const {
119 DCHECK(!has_error_);
120 return language_mode_;
121 }
122 bool uses_super_property() const {
123 DCHECK(!has_error_);
124 return uses_super_property_;
125 }
126 bool calls_eval() const {
127 DCHECK(!has_error_);
128 return calls_eval_;
129 }
130 ParseErrorType error_type() const {
131 DCHECK(has_error_);
132 return error_type_;
133 }
134 MessageTemplate::Template message() {
135 DCHECK(has_error_);
136 return message_;
137 }
138 const char* argument_opt() const {
139 DCHECK(has_error_);
140 return argument_opt_;
141 }
142
143 private:
144 bool has_error_;
145 int start_;
146 int end_;
147 // For function entries.
148 int literals_;
149 int properties_;
150 LanguageMode language_mode_;
151 bool uses_super_property_;
152 bool calls_eval_;
153 // For error messages.
154 MessageTemplate::Template message_;
155 const char* argument_opt_;
156 ParseErrorType error_type_;
157 };
158
159
160 class CompleteParserRecorder : public ParserRecorder {
161 public:
162 struct Key {
163 bool is_one_byte;
164 Vector<const byte> literal_bytes;
165 };
166
167 CompleteParserRecorder();
168 virtual ~CompleteParserRecorder() {}
169
170 virtual void LogFunction(int start, int end, int literals, int properties,
171 LanguageMode language_mode, bool uses_super_property,
172 bool calls_eval) {
173 function_store_.Add(start);
174 function_store_.Add(end);
175 function_store_.Add(literals);
176 function_store_.Add(properties);
177 function_store_.Add(language_mode);
178 function_store_.Add(uses_super_property);
179 function_store_.Add(calls_eval);
180 }
181
182 // Logs an error message and marks the log as containing an error.
183 // Further logging will be ignored, and ExtractData will return a vector
184 // representing the error only.
185 virtual void LogMessage(int start, int end, MessageTemplate::Template message,
186 const char* argument_opt, ParseErrorType error_type);
187 ScriptData* GetScriptData();
188
189 bool HasError() {
190 return static_cast<bool>(preamble_[PreparseDataConstants::kHasErrorOffset]);
191 }
192 Vector<unsigned> ErrorMessageData() {
193 DCHECK(HasError());
194 return function_store_.ToVector();
195 }
196
197 private:
198 void WriteString(Vector<const char> str);
199
200 Collector<unsigned> function_store_;
201 unsigned preamble_[PreparseDataConstants::kHeaderSize];
202
203 #ifdef DEBUG
204 int prev_start_;
205 #endif
206 };
207
208
209 } // namespace internal
210 } // namespace v8.
211
212 #endif // V8_PREPARSE_DATA_H_
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