Refactor constant part.

frog/leg/emitter.dart

Index: frog/leg/emitter.dart
diff --git a/frog/leg/emitter.dart b/frog/leg/emitter.dart
index e2ff510ff61feb5689089ac64c6b7fd74d7ed5ae..9e1fb6001e3330a75a4364d241344ffedb7e5f07 100644
--- a/frog/leg/emitter.dart
+++ b/frog/leg/emitter.dart
@@ -71,7 +71,7 @@ function(child, parent) {
       assert(selector.namedArgumentCount == 0);
       return;
     }
-    CompileTimeConstantHandler constants = compiler.compileTimeConstantHandler;
+    ConstantHandler handler = compiler.constantHandler;
     List<SourceString> names = selector.getOrderedNamedArguments();
 
     String invocationName =
@@ -133,7 +133,7 @@ function(child, parent) {
           argumentsBuffer[count] = jsName;
           parametersBuffer[selector.positionalArgumentCount + index] = jsName;
         } else {
-          Constant value = constants.initialVariableValues[element];
+          Constant value = handler.initialVariableValues[element];
           if (value == null) {
             argumentsBuffer[count] = '(void 0)';
           } else {
@@ -141,7 +141,7 @@ function(child, parent) {
             // JS function.
             indexOfLastOptionalArgumentInParameters = count;
             argumentsBuffer[count] =
-                constants.writeJsCode(new StringBuffer(), value).toString();
+                handler.writeJsCode(new StringBuffer(), value).toString();
           }
         }
       }
@@ -473,7 +473,7 @@ function(child, parent) {
     //       this.staticNonFinal = Isolate.prototype.someVal;
     //       ...
     //    }
-    CompileTimeConstantHandler handler = compiler.compileTimeConstantHandler;
+    ConstantHandler handler = compiler.constantHandler;
     List<VariableElement> staticNonFinalFields =
         handler.getStaticNonFinalFieldsForEmission();
     if (!staticNonFinalFields.isEmpty()) buffer.add('\n');
@@ -487,7 +487,7 @@ function(child, parent) {
   }
 
   void emitCompileTimeConstants(StringBuffer buffer) {
-    CompileTimeConstantHandler handler = compiler.compileTimeConstantHandler;
+    ConstantHandler handler = compiler.constantHandler;
     List<Constant> constants = handler.getConstantsForEmission();
     String prototype = "${namer.ISOLATE}.prototype";
     emitMakeConstantList(prototype, buffer);
@@ -510,13 +510,13 @@ function(child, parent) {
   }
 
   void emitStaticFinalFieldInitializations(StringBuffer buffer) {
-    CompileTimeConstantHandler constants = compiler.compileTimeConstantHandler;
+    ConstantHandler handler = compiler.constantHandler;
     List<VariableElement> staticFinalFields =
-        constants.getStaticFinalFieldsForEmission();
+        handler.getStaticFinalFieldsForEmission();
     for (VariableElement element in staticFinalFields) {
       buffer.add('${namer.isolatePropertyAccess(element)} = ');
       compiler.withCurrentElement(element, () {
-          constants.writeJsCodeForVariable(buffer, element);
+          handler.writeJsCodeForVariable(buffer, element);
         });
       buffer.add(';\n');
     }