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| 1 // Copyright 2008 the V8 project authors. All rights reserved. | 1 // Copyright 2012 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. |
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| 28 #include "v8.h" | 28 #include "v8.h" |
| 29 #include "ast.h" | 29 #include "ast.h" |
| 30 #include "assembler.h" | 30 #include "assembler.h" |
| 31 #include "regexp-stack.h" | 31 #include "regexp-stack.h" |
| 32 #include "regexp-macro-assembler.h" | 32 #include "regexp-macro-assembler.h" |
| 33 #include "simulator.h" | 33 #include "simulator.h" |
| 34 | 34 |
| 35 namespace v8 { | 35 namespace v8 { |
| 36 namespace internal { | 36 namespace internal { |
| 37 | 37 |
| 38 RegExpMacroAssembler::RegExpMacroAssembler() : slow_safe_compiler_(false) { | 38 RegExpMacroAssembler::RegExpMacroAssembler() |
| 39 : slow_safe_compiler_(false), |
| 40 global_(false) { |
| 39 } | 41 } |
| 40 | 42 |
| 41 | 43 |
| 42 RegExpMacroAssembler::~RegExpMacroAssembler() { | 44 RegExpMacroAssembler::~RegExpMacroAssembler() { |
| 43 } | 45 } |
| 44 | 46 |
| 45 | 47 |
| 46 bool RegExpMacroAssembler::CanReadUnaligned() { | 48 bool RegExpMacroAssembler::CanReadUnaligned() { |
| 47 #ifdef V8_HOST_CAN_READ_UNALIGNED | 49 #ifdef V8_HOST_CAN_READ_UNALIGNED |
| 48 return true; | 50 return true; |
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| 142 const byte* input_start = | 144 const byte* input_start = |
| 143 StringCharacterPosition(subject_ptr, start_offset + slice_offset); | 145 StringCharacterPosition(subject_ptr, start_offset + slice_offset); |
| 144 int byte_length = char_length << char_size_shift; | 146 int byte_length = char_length << char_size_shift; |
| 145 const byte* input_end = input_start + byte_length; | 147 const byte* input_end = input_start + byte_length; |
| 146 Result res = Execute(*regexp_code, | 148 Result res = Execute(*regexp_code, |
| 147 *subject, | 149 *subject, |
| 148 start_offset, | 150 start_offset, |
| 149 input_start, | 151 input_start, |
| 150 input_end, | 152 input_end, |
| 151 offsets_vector, | 153 offsets_vector, |
| 154 offsets_vector_length, |
| 152 isolate); | 155 isolate); |
| 153 return res; | 156 return res; |
| 154 } | 157 } |
| 155 | 158 |
| 156 | 159 |
| 157 NativeRegExpMacroAssembler::Result NativeRegExpMacroAssembler::Execute( | 160 NativeRegExpMacroAssembler::Result NativeRegExpMacroAssembler::Execute( |
| 158 Code* code, | 161 Code* code, |
| 159 String* input, // This needs to be the unpacked (sliced, cons) string. | 162 String* input, // This needs to be the unpacked (sliced, cons) string. |
| 160 int start_offset, | 163 int start_offset, |
| 161 const byte* input_start, | 164 const byte* input_start, |
| 162 const byte* input_end, | 165 const byte* input_end, |
| 163 int* output, | 166 int* output, |
| 167 int output_size, |
| 164 Isolate* isolate) { | 168 Isolate* isolate) { |
| 165 ASSERT(isolate == Isolate::Current()); | 169 ASSERT(isolate == Isolate::Current()); |
| 166 // Ensure that the minimum stack has been allocated. | 170 // Ensure that the minimum stack has been allocated. |
| 167 RegExpStackScope stack_scope(isolate); | 171 RegExpStackScope stack_scope(isolate); |
| 168 Address stack_base = stack_scope.stack()->stack_base(); | 172 Address stack_base = stack_scope.stack()->stack_base(); |
| 169 | 173 |
| 170 int direct_call = 0; | 174 int direct_call = 0; |
| 171 int result = CALL_GENERATED_REGEXP_CODE(code->entry(), | 175 int result = CALL_GENERATED_REGEXP_CODE(code->entry(), |
| 172 input, | 176 input, |
| 173 start_offset, | 177 start_offset, |
| 174 input_start, | 178 input_start, |
| 175 input_end, | 179 input_end, |
| 176 output, | 180 output, |
| 181 output_size, |
| 177 stack_base, | 182 stack_base, |
| 178 direct_call, | 183 direct_call, |
| 179 isolate); | 184 isolate); |
| 180 ASSERT(result <= SUCCESS); | |
| 181 ASSERT(result >= RETRY); | 185 ASSERT(result >= RETRY); |
| 182 | 186 |
| 183 if (result == EXCEPTION && !isolate->has_pending_exception()) { | 187 if (result == EXCEPTION && !isolate->has_pending_exception()) { |
| 184 // We detected a stack overflow (on the backtrack stack) in RegExp code, | 188 // We detected a stack overflow (on the backtrack stack) in RegExp code, |
| 185 // but haven't created the exception yet. | 189 // but haven't created the exception yet. |
| 186 isolate->StackOverflow(); | 190 isolate->StackOverflow(); |
| 187 } | 191 } |
| 188 return static_cast<Result>(result); | 192 return static_cast<Result>(result); |
| 189 } | 193 } |
| 190 | 194 |
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| 262 return NULL; | 266 return NULL; |
| 263 } | 267 } |
| 264 *stack_base = new_stack_base; | 268 *stack_base = new_stack_base; |
| 265 intptr_t stack_content_size = old_stack_base - stack_pointer; | 269 intptr_t stack_content_size = old_stack_base - stack_pointer; |
| 266 return new_stack_base - stack_content_size; | 270 return new_stack_base - stack_content_size; |
| 267 } | 271 } |
| 268 | 272 |
| 269 #endif // V8_INTERPRETED_REGEXP | 273 #endif // V8_INTERPRETED_REGEXP |
| 270 | 274 |
| 271 } } // namespace v8::internal | 275 } } // namespace v8::internal |
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