- Remove JSCRE from the runtime.

runtime/lib/regexp.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "platform/assert.h"
 #include "vm/bootstrap_natives.h"
 #include "vm/exceptions.h"
 #include "vm/native_entry.h"
 #include "vm/object.h"
 #include "vm/regexp_parser.h"
 #include "vm/thread.h"
 
-#include "lib/regexp_jsc.h"
-
 namespace dart {
 
 DECLARE_FLAG(bool, trace_irregexp);
-DEFINE_FLAG(bool, use_jscre, false, "Use the JSCRE regular expression engine");
 
 
 DEFINE_NATIVE_ENTRY(JSSyntaxRegExp_factory, 4) {
   ASSERT(TypeArguments::CheckedHandle(arguments->NativeArgAt(0)).IsNull());
   GET_NON_NULL_NATIVE_ARGUMENT(String, pattern, arguments->NativeArgAt(1));
   GET_NON_NULL_NATIVE_ARGUMENT(
       Instance, handle_multi_line, arguments->NativeArgAt(2));
   GET_NON_NULL_NATIVE_ARGUMENT(
       Instance, handle_case_sensitive, arguments->NativeArgAt(3));
   bool ignore_case = handle_case_sensitive.raw() != Bool::True().raw();
   bool multi_line = handle_multi_line.raw() == Bool::True().raw();
 
-  if (FLAG_use_jscre) {
-    return Jscre::Compile(pattern, multi_line, ignore_case);
-  }
   // Parse the pattern once in order to throw any format exceptions within
   // the factory constructor. It is parsed again upon compilation.
   RegExpCompileData compileData;
   if (!RegExpParser::ParseRegExp(pattern, multi_line, &compileData)) {
     // Parsing failures throw an exception.
     UNREACHABLE();
   }
 
   // Create a JSRegExp object containing only the initial parameters.
   return RegExpEngine::CreateJSRegExp(zone,
@@ skipping 40 matching lines @@
   return Object::null();
 }
 
 
 DEFINE_NATIVE_ENTRY(JSSyntaxRegExp_ExecuteMatch, 3) {
   const JSRegExp& regexp = JSRegExp::CheckedHandle(arguments->NativeArgAt(0));
   ASSERT(!regexp.IsNull());
   GET_NON_NULL_NATIVE_ARGUMENT(String, str, arguments->NativeArgAt(1));
   GET_NON_NULL_NATIVE_ARGUMENT(Smi, start_index, arguments->NativeArgAt(2));
 
-  if (FLAG_use_jscre) {
-    return Jscre::Execute(regexp, str, start_index.Value());
-  }
-
   // This function is intrinsified. See Intrinsifier::JSRegExp_ExecuteMatch.
   const intptr_t cid = str.GetClassId();
 
   // Retrieve the cached function.
   const Function& fn = Function::Handle(regexp.function(cid));
   ASSERT(!fn.IsNull());
 
   // And finally call the generated code.
   return IRRegExpMacroAssembler::Execute(fn, str, start_index, zone);
 }
 
 }  // namespace dart