fschneider@chromium.org | fb144a0 | 2011-05-04 12:43:48 +0000 | [diff] [blame] | 1 | // Copyright 2011 the V8 project authors. All rights reserved. |
ager@chromium.org | beb2571 | 2010-11-29 08:02:25 +0000 | [diff] [blame] | 2 | // Redistribution and use in source and binary forms, with or without |
| 3 | // modification, are permitted provided that the following conditions are |
| 4 | // met: |
| 5 | // |
| 6 | // * Redistributions of source code must retain the above copyright |
| 7 | // notice, this list of conditions and the following disclaimer. |
| 8 | // * Redistributions in binary form must reproduce the above |
| 9 | // copyright notice, this list of conditions and the following |
| 10 | // disclaimer in the documentation and/or other materials provided |
| 11 | // with the distribution. |
| 12 | // * Neither the name of Google Inc. nor the names of its |
| 13 | // contributors may be used to endorse or promote products derived |
| 14 | // from this software without specific prior written permission. |
| 15 | // |
| 16 | // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 17 | // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 18 | // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| 19 | // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| 20 | // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 21 | // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| 22 | // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 23 | // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 24 | // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 25 | // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| 26 | // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 27 | |
lrn@chromium.org | 1c09276 | 2011-05-09 09:42:16 +0000 | [diff] [blame] | 28 | #ifndef V8_PREPARSE_DATA_H_ |
| 29 | #define V8_PREPARSE_DATA_H_ |
ager@chromium.org | beb2571 | 2010-11-29 08:02:25 +0000 | [diff] [blame] | 30 | |
lrn@chromium.org | 1c09276 | 2011-05-09 09:42:16 +0000 | [diff] [blame] | 31 | #include "allocation.h" |
ager@chromium.org | beb2571 | 2010-11-29 08:02:25 +0000 | [diff] [blame] | 32 | #include "hashmap.h" |
fschneider@chromium.org | fb144a0 | 2011-05-04 12:43:48 +0000 | [diff] [blame] | 33 | #include "utils-inl.h" |
ager@chromium.org | beb2571 | 2010-11-29 08:02:25 +0000 | [diff] [blame] | 34 | |
| 35 | namespace v8 { |
| 36 | namespace internal { |
| 37 | |
ager@chromium.org | beb2571 | 2010-11-29 08:02:25 +0000 | [diff] [blame] | 38 | // ---------------------------------------------------------------------------- |
| 39 | // ParserRecorder - Logging of preparser data. |
| 40 | |
| 41 | // Abstract interface for preparse data recorder. |
| 42 | class ParserRecorder { |
| 43 | public: |
| 44 | ParserRecorder() { } |
| 45 | virtual ~ParserRecorder() { } |
| 46 | |
| 47 | // Logs the scope and some details of a function literal in the source. |
| 48 | virtual void LogFunction(int start, |
| 49 | int end, |
| 50 | int literals, |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 51 | int properties, |
| 52 | int strict_mode) = 0; |
ager@chromium.org | beb2571 | 2010-11-29 08:02:25 +0000 | [diff] [blame] | 53 | |
| 54 | // Logs a symbol creation of a literal or identifier. |
fschneider@chromium.org | 9e3e0b6 | 2011-01-03 10:16:46 +0000 | [diff] [blame] | 55 | virtual void LogAsciiSymbol(int start, Vector<const char> literal) { } |
| 56 | virtual void LogUC16Symbol(int start, Vector<const uc16> literal) { } |
ager@chromium.org | beb2571 | 2010-11-29 08:02:25 +0000 | [diff] [blame] | 57 | |
| 58 | // Logs an error message and marks the log as containing an error. |
| 59 | // Further logging will be ignored, and ExtractData will return a vector |
| 60 | // representing the error only. |
| 61 | virtual void LogMessage(int start, |
| 62 | int end, |
| 63 | const char* message, |
| 64 | const char* argument_opt) = 0; |
| 65 | |
| 66 | virtual int function_position() = 0; |
| 67 | |
| 68 | virtual int symbol_position() = 0; |
| 69 | |
| 70 | virtual int symbol_ids() = 0; |
| 71 | |
| 72 | virtual Vector<unsigned> ExtractData() = 0; |
| 73 | |
| 74 | virtual void PauseRecording() = 0; |
| 75 | |
| 76 | virtual void ResumeRecording() = 0; |
| 77 | }; |
| 78 | |
| 79 | |
| 80 | // ---------------------------------------------------------------------------- |
| 81 | // FunctionLoggingParserRecorder - Record only function entries |
| 82 | |
| 83 | class FunctionLoggingParserRecorder : public ParserRecorder { |
| 84 | public: |
| 85 | FunctionLoggingParserRecorder(); |
| 86 | virtual ~FunctionLoggingParserRecorder() {} |
| 87 | |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 88 | virtual void LogFunction(int start, |
| 89 | int end, |
| 90 | int literals, |
| 91 | int properties, |
| 92 | int strict_mode) { |
ager@chromium.org | beb2571 | 2010-11-29 08:02:25 +0000 | [diff] [blame] | 93 | function_store_.Add(start); |
| 94 | function_store_.Add(end); |
| 95 | function_store_.Add(literals); |
| 96 | function_store_.Add(properties); |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 97 | function_store_.Add(strict_mode); |
ager@chromium.org | beb2571 | 2010-11-29 08:02:25 +0000 | [diff] [blame] | 98 | } |
| 99 | |
| 100 | // Logs an error message and marks the log as containing an error. |
| 101 | // Further logging will be ignored, and ExtractData will return a vector |
| 102 | // representing the error only. |
| 103 | virtual void LogMessage(int start, |
| 104 | int end, |
| 105 | const char* message, |
| 106 | const char* argument_opt); |
| 107 | |
| 108 | virtual int function_position() { return function_store_.size(); } |
| 109 | |
| 110 | |
| 111 | virtual Vector<unsigned> ExtractData() = 0; |
| 112 | |
| 113 | virtual void PauseRecording() { |
| 114 | pause_count_++; |
| 115 | is_recording_ = false; |
| 116 | } |
| 117 | |
| 118 | virtual void ResumeRecording() { |
| 119 | ASSERT(pause_count_ > 0); |
| 120 | if (--pause_count_ == 0) is_recording_ = !has_error(); |
| 121 | } |
| 122 | |
| 123 | protected: |
| 124 | bool has_error() { |
| 125 | return static_cast<bool>(preamble_[PreparseDataConstants::kHasErrorOffset]); |
| 126 | } |
| 127 | |
| 128 | bool is_recording() { |
| 129 | return is_recording_; |
| 130 | } |
| 131 | |
| 132 | void WriteString(Vector<const char> str); |
| 133 | |
| 134 | Collector<unsigned> function_store_; |
| 135 | unsigned preamble_[PreparseDataConstants::kHeaderSize]; |
| 136 | bool is_recording_; |
| 137 | int pause_count_; |
| 138 | |
| 139 | #ifdef DEBUG |
| 140 | int prev_start_; |
| 141 | #endif |
| 142 | }; |
| 143 | |
| 144 | |
| 145 | // ---------------------------------------------------------------------------- |
| 146 | // PartialParserRecorder - Record only function entries |
| 147 | |
| 148 | class PartialParserRecorder : public FunctionLoggingParserRecorder { |
| 149 | public: |
| 150 | PartialParserRecorder() : FunctionLoggingParserRecorder() { } |
fschneider@chromium.org | 9e3e0b6 | 2011-01-03 10:16:46 +0000 | [diff] [blame] | 151 | virtual void LogAsciiSymbol(int start, Vector<const char> literal) { } |
| 152 | virtual void LogUC16Symbol(int start, Vector<const uc16> literal) { } |
ager@chromium.org | beb2571 | 2010-11-29 08:02:25 +0000 | [diff] [blame] | 153 | virtual ~PartialParserRecorder() { } |
| 154 | virtual Vector<unsigned> ExtractData(); |
| 155 | virtual int symbol_position() { return 0; } |
| 156 | virtual int symbol_ids() { return 0; } |
| 157 | }; |
| 158 | |
| 159 | |
| 160 | // ---------------------------------------------------------------------------- |
| 161 | // CompleteParserRecorder - Record both function entries and symbols. |
| 162 | |
| 163 | class CompleteParserRecorder: public FunctionLoggingParserRecorder { |
| 164 | public: |
| 165 | CompleteParserRecorder(); |
| 166 | virtual ~CompleteParserRecorder() { } |
| 167 | |
fschneider@chromium.org | 9e3e0b6 | 2011-01-03 10:16:46 +0000 | [diff] [blame] | 168 | virtual void LogAsciiSymbol(int start, Vector<const char> literal) { |
| 169 | if (!is_recording_) return; |
| 170 | int hash = vector_hash(literal); |
| 171 | LogSymbol(start, hash, true, Vector<const byte>::cast(literal)); |
| 172 | } |
| 173 | |
| 174 | virtual void LogUC16Symbol(int start, Vector<const uc16> literal) { |
| 175 | if (!is_recording_) return; |
| 176 | int hash = vector_hash(literal); |
| 177 | LogSymbol(start, hash, false, Vector<const byte>::cast(literal)); |
| 178 | } |
ager@chromium.org | beb2571 | 2010-11-29 08:02:25 +0000 | [diff] [blame] | 179 | |
| 180 | virtual Vector<unsigned> ExtractData(); |
| 181 | |
| 182 | virtual int symbol_position() { return symbol_store_.size(); } |
| 183 | virtual int symbol_ids() { return symbol_id_; } |
| 184 | |
| 185 | private: |
fschneider@chromium.org | 9e3e0b6 | 2011-01-03 10:16:46 +0000 | [diff] [blame] | 186 | struct Key { |
| 187 | bool is_ascii; |
| 188 | Vector<const byte> literal_bytes; |
| 189 | }; |
| 190 | |
| 191 | virtual void LogSymbol(int start, |
| 192 | int hash, |
| 193 | bool is_ascii, |
| 194 | Vector<const byte> literal); |
| 195 | |
| 196 | template <typename Char> |
| 197 | static int vector_hash(Vector<const Char> string) { |
ager@chromium.org | beb2571 | 2010-11-29 08:02:25 +0000 | [diff] [blame] | 198 | int hash = 0; |
| 199 | for (int i = 0; i < string.length(); i++) { |
fschneider@chromium.org | 9e3e0b6 | 2011-01-03 10:16:46 +0000 | [diff] [blame] | 200 | int c = static_cast<int>(string[i]); |
ager@chromium.org | beb2571 | 2010-11-29 08:02:25 +0000 | [diff] [blame] | 201 | hash += c; |
| 202 | hash += (hash << 10); |
| 203 | hash ^= (hash >> 6); |
| 204 | } |
| 205 | return hash; |
| 206 | } |
| 207 | |
| 208 | static bool vector_compare(void* a, void* b) { |
fschneider@chromium.org | 9e3e0b6 | 2011-01-03 10:16:46 +0000 | [diff] [blame] | 209 | Key* string1 = reinterpret_cast<Key*>(a); |
| 210 | Key* string2 = reinterpret_cast<Key*>(b); |
| 211 | if (string1->is_ascii != string2->is_ascii) return false; |
| 212 | int length = string1->literal_bytes.length(); |
| 213 | if (string2->literal_bytes.length() != length) return false; |
| 214 | return memcmp(string1->literal_bytes.start(), |
| 215 | string2->literal_bytes.start(), length) == 0; |
ager@chromium.org | beb2571 | 2010-11-29 08:02:25 +0000 | [diff] [blame] | 216 | } |
| 217 | |
| 218 | // Write a non-negative number to the symbol store. |
| 219 | void WriteNumber(int number); |
| 220 | |
fschneider@chromium.org | 9e3e0b6 | 2011-01-03 10:16:46 +0000 | [diff] [blame] | 221 | Collector<byte> literal_chars_; |
ager@chromium.org | beb2571 | 2010-11-29 08:02:25 +0000 | [diff] [blame] | 222 | Collector<byte> symbol_store_; |
fschneider@chromium.org | 9e3e0b6 | 2011-01-03 10:16:46 +0000 | [diff] [blame] | 223 | Collector<Key> symbol_keys_; |
ager@chromium.org | beb2571 | 2010-11-29 08:02:25 +0000 | [diff] [blame] | 224 | HashMap symbol_table_; |
| 225 | int symbol_id_; |
| 226 | }; |
| 227 | |
| 228 | |
| 229 | } } // namespace v8::internal. |
| 230 | |
lrn@chromium.org | 1c09276 | 2011-05-09 09:42:16 +0000 | [diff] [blame] | 231 | #endif // V8_PREPARSE_DATA_H_ |