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Issue 11040062: Renamed Zone->StackZone, BaseZone->Zone, in preparation for changing isolate->get_zone() to return … (Closed) Base URL: https://dart.googlecode.com/svn/branches/bleeding_edge/dart
Patch Set: code review changes Created 8 years, 2 months ago
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1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file 1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file
2 // for details. All rights reserved. Use of this source code is governed by a 2 // for details. All rights reserved. Use of this source code is governed by a
3 // BSD-style license that can be found in the LICENSE file. 3 // BSD-style license that can be found in the LICENSE file.
4 // This file encapsulates all the interaction with the 4 // This file encapsulates all the interaction with the
5 // JSC regular expression library also referred to as pcre 5 // JSC regular expression library also referred to as pcre
6 6
7 #include "lib/regexp_jsc.h" 7 #include "lib/regexp_jsc.h"
8 8
9 #include "platform/assert.h" 9 #include "platform/assert.h"
10 #include "vm/allocation.h" 10 #include "vm/allocation.h"
11 #include "vm/exceptions.h" 11 #include "vm/exceptions.h"
12 #include "vm/globals.h" 12 #include "vm/globals.h"
13 #include "vm/isolate.h" 13 #include "vm/isolate.h"
14 #include "third_party/jscre/pcre.h" 14 #include "third_party/jscre/pcre.h"
15 15
16 namespace dart { 16 namespace dart {
17 17
18 static uint16_t* GetTwoByteData(const String& str) { 18 static uint16_t* GetTwoByteData(const String& str) {
19 Zone* zone = Isolate::Current()->current_zone(); 19 StackZone* zone = Isolate::Current()->current_zone();
20 uint16_t* two_byte_str = zone->Alloc<uint16_t>(str.Length()); 20 uint16_t* two_byte_str = zone->Alloc<uint16_t>(str.Length());
21 for (intptr_t i = 0; i < str.Length(); i++) { 21 for (intptr_t i = 0; i < str.Length(); i++) {
22 two_byte_str[i] = str.CharAt(i); 22 two_byte_str[i] = str.CharAt(i);
23 } 23 }
24 return two_byte_str; 24 return two_byte_str;
25 } 25 }
26 26
27 27
28 static void* JSREMalloc(size_t size) { 28 static void* JSREMalloc(size_t size) {
29 intptr_t regexp_size = static_cast<intptr_t>(size); 29 intptr_t regexp_size = static_cast<intptr_t>(size);
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110 // First convert the input str to UTF16 format as the jscre library expects 110 // First convert the input str to UTF16 format as the jscre library expects
111 // strings to be in UTF16 encoding. 111 // strings to be in UTF16 encoding.
112 uint16_t* two_byte_str = GetTwoByteData(str); 112 uint16_t* two_byte_str = GetTwoByteData(str);
113 113
114 // Execute a regex match by calling into the jscre library. 114 // Execute a regex match by calling into the jscre library.
115 jscre::JSRegExp* jscregexp = 115 jscre::JSRegExp* jscregexp =
116 reinterpret_cast<jscre::JSRegExp*>(regex.GetDataStartAddress()); 116 reinterpret_cast<jscre::JSRegExp*>(regex.GetDataStartAddress());
117 ASSERT(jscregexp != NULL); 117 ASSERT(jscregexp != NULL);
118 const Smi& num_bracket_exprs = Smi::Handle(regex.num_bracket_expressions()); 118 const Smi& num_bracket_exprs = Smi::Handle(regex.num_bracket_expressions());
119 intptr_t num_bracket_expressions = num_bracket_exprs.Value(); 119 intptr_t num_bracket_expressions = num_bracket_exprs.Value();
120 Zone* zone = Isolate::Current()->current_zone(); 120 StackZone* zone = Isolate::Current()->current_zone();
121 // The jscre library rounds the passed in size to a multiple of 3 in order 121 // The jscre library rounds the passed in size to a multiple of 3 in order
122 // to reuse the passed in offsets array as a temporary chunk of working 122 // to reuse the passed in offsets array as a temporary chunk of working
123 // storage during matching, so we just pass in a size which is a multiple 123 // storage during matching, so we just pass in a size which is a multiple
124 // of 3. 124 // of 3.
125 const int kJscreMultiple = 3; 125 const int kJscreMultiple = 3;
126 int offsets_length = (num_bracket_expressions + 1) * kJscreMultiple; 126 int offsets_length = (num_bracket_expressions + 1) * kJscreMultiple;
127 int* offsets = NULL; 127 int* offsets = NULL;
128 offsets = zone->Alloc<int>(offsets_length); 128 offsets = zone->Alloc<int>(offsets_length);
129 int retval = jscre::jsRegExpExecute(jscregexp, 129 int retval = jscre::jsRegExpExecute(jscregexp,
130 two_byte_str, 130 two_byte_str,
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163 i += kMatchPair) { 163 i += kMatchPair) {
164 start = Smi::New(offsets[i]); 164 start = Smi::New(offsets[i]);
165 end = Smi::New(offsets[i + 1]); 165 end = Smi::New(offsets[i + 1]);
166 array.SetAt(i, start); 166 array.SetAt(i, start);
167 array.SetAt(i+1, end); 167 array.SetAt(i+1, end);
168 } 168 }
169 return array.raw(); 169 return array.raw();
170 } 170 }
171 171
172 } // namespace dart 172 } // namespace dart
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