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1 // Copyright 2010 the V8 project authors. All rights reserved. | 1 // Copyright 2010 the V8 project authors. All rights reserved. |
2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
4 // met: | 4 // met: |
5 // | 5 // |
6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
11 // with the distribution. | 11 // with the distribution. |
12 // * Neither the name of Google Inc. nor the names of its | 12 // * Neither the name of Google Inc. nor the names of its |
13 // contributors may be used to endorse or promote products derived | 13 // contributors may be used to endorse or promote products derived |
14 // from this software without specific prior written permission. | 14 // from this software without specific prior written permission. |
15 // | 15 // |
16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | 16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | 17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | 18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | 19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | 20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | 21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | 22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | 23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | 24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | 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. | 26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
27 | 27 |
28 #include "../include/v8-preparser.h" | 28 #include "../include/v8-preparser.h" |
29 | 29 |
30 #include "v8.h" | |
31 | |
32 #include "globals.h" | 30 #include "globals.h" |
33 #include "checks.h" | 31 #include "checks.h" |
34 #include "allocation.h" | 32 #include "allocation.h" |
35 #include "utils.h" | 33 #include "utils.h" |
36 #include "list.h" | 34 #include "list.h" |
37 #include "scanner-base.h" | 35 #include "scanner-base.h" |
38 #include "preparse-data.h" | 36 #include "preparse-data.h" |
39 #include "preparser.h" | 37 #include "preparser.h" |
40 | 38 |
41 namespace v8 { | 39 namespace v8 { |
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154 // Only if that pushback buffer at the start of buffer_ isn't sufficient | 152 // Only if that pushback buffer at the start of buffer_ isn't sufficient |
155 // is the following used. | 153 // is the following used. |
156 const uc16* pushback_buffer_end_cache_; | 154 const uc16* pushback_buffer_end_cache_; |
157 uc16* pushback_buffer_backing_; | 155 uc16* pushback_buffer_backing_; |
158 unsigned pushback_buffer_backing_size_; | 156 unsigned pushback_buffer_backing_size_; |
159 }; | 157 }; |
160 | 158 |
161 | 159 |
162 class StandAloneJavaScriptScanner : public JavaScriptScanner { | 160 class StandAloneJavaScriptScanner : public JavaScriptScanner { |
163 public: | 161 public: |
164 StandAloneJavaScriptScanner() | 162 explicit StandAloneJavaScriptScanner(ScannerConstants* scanner_constants) |
165 : JavaScriptScanner(Isolate::Current()) { } | 163 : JavaScriptScanner(scanner_constants) { } |
166 | 164 |
167 void Initialize(UC16CharacterStream* source) { | 165 void Initialize(UC16CharacterStream* source) { |
168 source_ = source; | 166 source_ = source; |
169 Init(); | 167 Init(); |
170 // Skip initial whitespace allowing HTML comment ends just like | 168 // Skip initial whitespace allowing HTML comment ends just like |
171 // after a newline and scan first token. | 169 // after a newline and scan first token. |
172 has_line_terminator_before_next_ = true; | 170 has_line_terminator_before_next_ = true; |
173 SkipWhiteSpace(); | 171 SkipWhiteSpace(); |
174 Scan(); | 172 Scan(); |
175 } | 173 } |
176 }; | 174 }; |
177 | 175 |
178 | 176 |
179 // Functions declared by allocation.h | 177 // Functions declared by allocation.h and implemented in both api.cc (for v8) |
| 178 // or here (for a stand-alone preparser). |
180 | 179 |
181 void FatalProcessOutOfMemory(const char* reason) { | 180 void FatalProcessOutOfMemory(const char* reason) { |
182 V8_Fatal(__FILE__, __LINE__, reason); | 181 V8_Fatal(__FILE__, __LINE__, reason); |
183 } | 182 } |
184 | 183 |
185 bool EnableSlowAsserts() { return true; } | 184 bool EnableSlowAsserts() { return true; } |
186 | 185 |
187 } // namespace internal. | 186 } // namespace internal. |
188 | 187 |
189 | 188 |
190 UnicodeInputStream::~UnicodeInputStream() { } | 189 UnicodeInputStream::~UnicodeInputStream() { } |
191 | 190 |
192 | 191 |
193 PreParserData Preparse(UnicodeInputStream* input, size_t max_stack) { | 192 PreParserData Preparse(UnicodeInputStream* input, size_t max_stack) { |
194 internal::InputStreamUTF16Buffer buffer(input); | 193 internal::InputStreamUTF16Buffer buffer(input); |
195 uintptr_t stack_limit = reinterpret_cast<uintptr_t>(&buffer) - max_stack; | 194 uintptr_t stack_limit = reinterpret_cast<uintptr_t>(&buffer) - max_stack; |
196 internal::StandAloneJavaScriptScanner scanner; | 195 ScannerConstants scanner_constants; |
| 196 internal::StandAloneJavaScriptScanner scanner(&scanner_constants); |
197 scanner.Initialize(&buffer); | 197 scanner.Initialize(&buffer); |
198 internal::CompleteParserRecorder recorder; | 198 internal::CompleteParserRecorder recorder; |
199 preparser::PreParser::PreParseResult result = | 199 preparser::PreParser::PreParseResult result = |
200 preparser::PreParser::PreParseProgram(&scanner, | 200 preparser::PreParser::PreParseProgram(&scanner, |
201 &recorder, | 201 &recorder, |
202 true, | 202 true, |
203 stack_limit); | 203 stack_limit); |
204 if (result == preparser::PreParser::kPreParseStackOverflow) { | 204 if (result == preparser::PreParser::kPreParseStackOverflow) { |
205 return PreParserData::StackOverflow(); | 205 return PreParserData::StackOverflow(); |
206 } | 206 } |
207 internal::Vector<unsigned> pre_data = recorder.ExtractData(); | 207 internal::Vector<unsigned> pre_data = recorder.ExtractData(); |
208 size_t size = pre_data.length() * sizeof(pre_data[0]); | 208 size_t size = pre_data.length() * sizeof(pre_data[0]); |
209 unsigned char* data = reinterpret_cast<unsigned char*>(pre_data.start()); | 209 unsigned char* data = reinterpret_cast<unsigned char*>(pre_data.start()); |
210 return PreParserData(size, data); | 210 return PreParserData(size, data); |
211 } | 211 } |
212 | 212 |
213 } // namespace v8. | 213 } // namespace v8. |
214 | 214 |
215 | 215 |
216 // Used by ASSERT macros and other immediate exits. | 216 // Used by ASSERT macros and other immediate exits. |
217 extern "C" void V8_Fatal(const char* file, int line, const char* format, ...) { | 217 extern "C" void V8_Fatal(const char* file, int line, const char* format, ...) { |
218 exit(EXIT_FAILURE); | 218 exit(EXIT_FAILURE); |
219 } | 219 } |
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