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Issue 7211013: Combined identical classes V8JavaScriptScanner and StandAloneJavaScriptScanner. (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: Created 9 years, 6 months ago
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1 // Copyright 2011 the V8 project authors. All rights reserved. 1 // Copyright 2011 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
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151 // Limit of pushbacks before new allocation is necessary. 151 // Limit of pushbacks before new allocation is necessary.
152 uc16* pushback_buffer_; 152 uc16* pushback_buffer_;
153 // Only if that pushback buffer at the start of buffer_ isn't sufficient 153 // Only if that pushback buffer at the start of buffer_ isn't sufficient
154 // is the following used. 154 // is the following used.
155 const uc16* pushback_buffer_end_cache_; 155 const uc16* pushback_buffer_end_cache_;
156 uc16* pushback_buffer_backing_; 156 uc16* pushback_buffer_backing_;
157 unsigned pushback_buffer_backing_size_; 157 unsigned pushback_buffer_backing_size_;
158 }; 158 };
159 159
160 160
161 class StandAloneJavaScriptScanner : public JavaScriptScanner {
162 public:
163 explicit StandAloneJavaScriptScanner(UnicodeCache* unicode_cache)
164 : JavaScriptScanner(unicode_cache) { }
165
166 void Initialize(UC16CharacterStream* source) {
167 source_ = source;
168 Init();
169 // Skip initial whitespace allowing HTML comment ends just like
170 // after a newline and scan first token.
171 has_line_terminator_before_next_ = true;
172 SkipWhiteSpace();
173 Scan();
174 }
175 };
176
177
178 // Functions declared by allocation.h and implemented in both api.cc (for v8) 161 // Functions declared by allocation.h and implemented in both api.cc (for v8)
179 // or here (for a stand-alone preparser). 162 // or here (for a stand-alone preparser).
180 163
181 void FatalProcessOutOfMemory(const char* reason) { 164 void FatalProcessOutOfMemory(const char* reason) {
182 V8_Fatal(__FILE__, __LINE__, reason); 165 V8_Fatal(__FILE__, __LINE__, reason);
183 } 166 }
184 167
185 bool EnableSlowAsserts() { return true; } 168 bool EnableSlowAsserts() { return true; }
186 169
187 } // namespace internal. 170 } // namespace internal.
188 171
189 172
190 UnicodeInputStream::~UnicodeInputStream() { } 173 UnicodeInputStream::~UnicodeInputStream() { }
191 174
192 175
193 PreParserData Preparse(UnicodeInputStream* input, size_t max_stack) { 176 PreParserData Preparse(UnicodeInputStream* input, size_t max_stack) {
194 internal::InputStreamUTF16Buffer buffer(input); 177 internal::InputStreamUTF16Buffer buffer(input);
195 uintptr_t stack_limit = reinterpret_cast<uintptr_t>(&buffer) - max_stack; 178 uintptr_t stack_limit = reinterpret_cast<uintptr_t>(&buffer) - max_stack;
196 internal::UnicodeCache unicode_cache; 179 internal::UnicodeCache unicode_cache;
197 internal::StandAloneJavaScriptScanner scanner(&unicode_cache); 180 internal::JavaScriptScanner scanner(&unicode_cache);
198 scanner.Initialize(&buffer); 181 scanner.Initialize(&buffer);
199 internal::CompleteParserRecorder recorder; 182 internal::CompleteParserRecorder recorder;
200 preparser::PreParser::PreParseResult result = 183 preparser::PreParser::PreParseResult result =
201 preparser::PreParser::PreParseProgram(&scanner, 184 preparser::PreParser::PreParseProgram(&scanner,
202 &recorder, 185 &recorder,
203 true, 186 true,
204 stack_limit); 187 stack_limit);
205 if (result == preparser::PreParser::kPreParseStackOverflow) { 188 if (result == preparser::PreParser::kPreParseStackOverflow) {
206 return PreParserData::StackOverflow(); 189 return PreParserData::StackOverflow();
207 } 190 }
208 internal::Vector<unsigned> pre_data = recorder.ExtractData(); 191 internal::Vector<unsigned> pre_data = recorder.ExtractData();
209 size_t size = pre_data.length() * sizeof(pre_data[0]); 192 size_t size = pre_data.length() * sizeof(pre_data[0]);
210 unsigned char* data = reinterpret_cast<unsigned char*>(pre_data.start()); 193 unsigned char* data = reinterpret_cast<unsigned char*>(pre_data.start());
211 return PreParserData(size, data); 194 return PreParserData(size, data);
212 } 195 }
213 196
214 } // namespace v8. 197 } // namespace v8.
215 198
216 199
217 // Used by ASSERT macros and other immediate exits. 200 // Used by ASSERT macros and other immediate exits.
218 extern "C" void V8_Fatal(const char* file, int line, const char* format, ...) { 201 extern "C" void V8_Fatal(const char* file, int line, const char* format, ...) {
219 exit(EXIT_FAILURE); 202 exit(EXIT_FAILURE);
220 } 203 }
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