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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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