Create frequently used symbols in the vm isolate

vm/parser.cc

Index: vm/parser.cc
===================================================================
--- vm/parser.cc	(revision 9729)
+++ vm/parser.cc	(working copy)
@@ -18,6 +18,7 @@
 #include "vm/object_store.h"
 #include "vm/resolver.h"
 #include "vm/scopes.h"
+#include "vm/symbols.h"
 
 namespace dart {
 
@@ -1528,7 +1529,7 @@
     return;
   }
   String& ctor_name = String::Handle(super_class.Name());
-  String& ctor_suffix = String::Handle(String::NewSymbol("."));
+  String& ctor_suffix = String::Handle(Symbols::Dot());
   ctor_name = String::Concat(ctor_name, ctor_suffix);
   ArgumentListNode* arguments = new ArgumentListNode(supercall_pos);
   // Implicit 'this' parameter is the first argument.
@@ -1570,7 +1571,7 @@
   const Class& super_class = Class::Handle(cls.SuperClass());
   ASSERT(!super_class.IsNull());
   String& ctor_name = String::Handle(super_class.Name());
-  String& ctor_suffix = String::Handle(String::NewSymbol("."));
+  String& ctor_suffix = String::Handle(Symbols::Dot());
   if (CurrentToken() == Token::kPERIOD) {
     ConsumeToken();
     ctor_suffix = String::Concat(
@@ -1756,7 +1757,7 @@
   const intptr_t call_pos = TokenPos();
   ConsumeToken();
   String& ctor_name = String::Handle(cls.Name());
-  String& ctor_suffix = String::Handle(String::NewSymbol("."));
+  String& ctor_suffix = String::Handle(Symbols::Dot());
 
   if (CurrentToken() == Token::kPERIOD) {
     ConsumeToken();
@@ -2375,7 +2376,7 @@
       ExpectToken(Token::kTHIS);
       String& redir_name = String::ZoneHandle(
           String::Concat(members->class_name(),
-                         String::Handle(String::NewSymbol("."))));
+                         String::Handle(Symbols::Dot())));
       if (CurrentToken() == Token::kPERIOD) {
         ConsumeToken();
         redir_name = String::Concat(redir_name,
@@ -2711,7 +2712,7 @@
     }
     // We must be dealing with a constructor or named constructor.
     member.kind = RawFunction::kConstructor;
-    String& ctor_suffix = String::ZoneHandle(String::NewSymbol("."));
+    String& ctor_suffix = String::ZoneHandle(Symbols::Dot());
     if (CurrentToken() == Token::kPERIOD) {
       // Named constructor.
       ConsumeToken();
@@ -2927,7 +2928,7 @@
     // and contains a supercall in the initializer list.
     String& ctor_name = String::ZoneHandle(
         String::Concat(class_desc->class_name(),
-                       String::Handle(String::NewSymbol("."))));
+                       String::Handle(Symbols::Dot())));
     ctor_name = String::NewSymbol(ctor_name);
     // The token position for the implicit constructor is the 'class'
     // keyword of the constructor's class.
@@ -7856,7 +7857,7 @@
   // for class 'A' is labeled 'A.C', and the static function implementing the
   // unnamed constructor for class 'A' is labeled 'A.'.
   // This convention prevents users from explicitly calling constructors.
-  const String& period = String::Handle(String::NewSymbol("."));
+  const String& period = String::Handle(Symbols::Dot());
   String& constructor_name =
       String::Handle(String::Concat(type_class_name, period));
   if (named_constructor != NULL) {