Remove ConstantExpression.value

pkg/compiler/lib/src/js_backend/codegen/codegen.dart

 // Copyright (c) 2014, 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.
 
 library code_generator;
 
 import 'glue.dart';
 
 import '../../tree_ir/tree_ir_nodes.dart' as tree_ir;
 import '../../js/js.dart' as js;
@@ skipping 155 matching lines @@
   }
 
   @override
   js.Expression visitConcatenateStrings(tree_ir.ConcatenateStrings node) {
     js.Expression addStrings(js.Expression left, js.Expression right) {
       return new js.Binary('+', left, right);
     }
 
     js.Expression toString(tree_ir.Expression input) {
       bool useDirectly = input is tree_ir.Constant &&
-          (input.expression.value.isString ||
-           input.expression.value.isInt ||
-           input.expression.value.isBool);
+          (input.value.isString ||
+           input.value.isInt ||
+           input.value.isBool);
       js.Expression value = visitExpression(input);
       if (useDirectly) {
         return value;
       } else {
         Element convertToString = glue.getStringConversion();
         registry.registerStaticUse(convertToString);
         js.Expression access = glue.staticFunctionAccess(convertToString);
         return (new js.Call(access, <js.Expression>[value]));
       }
     }
 
     return node.arguments.map(toString).reduce(addStrings);
   }
 
   @override
   js.Expression visitConditional(tree_ir.Conditional node) {
     return new js.Conditional(
         visitExpression(node.condition),
         visitExpression(node.thenExpression),
         visitExpression(node.elseExpression));
   }
 
   js.Expression buildConstant(ConstantValue constant) {
     registry.registerCompileTimeConstant(constant);
     return glue.constantReference(constant);
   }
 
   @override
   js.Expression visitConstant(tree_ir.Constant node) {
-    return buildConstant(node.expression.value);
+    return buildConstant(node.value);
   }
 
   js.Expression compileConstant(ParameterElement parameter) {
-    return buildConstant(glue.getConstantForVariable(parameter).value);
+    return buildConstant(glue.getConstantValueForVariable(parameter));
   }
 
   // TODO(karlklose): get rid of the selector argument.
   js.Expression buildStaticInvoke(Selector selector,
                                   Element target,
                                   List<js.Expression> arguments,
                                   {SourceInformation sourceInformation}) {
     registry.registerStaticInvocation(target.declaration);
     if (target == glue.getInterceptorMethod) {
       // This generates a call to the specialized interceptor function, which
@@ skipping 459 matching lines @@
         node.arguments.map(visitExpression).toList(growable: false);
     return glue.generateTypeRepresentation(node.dartType, arguments);
   }
 
   visitFunctionExpression(tree_ir.FunctionExpression node) {
     // FunctionExpressions are currently unused.
     // We might need them if we want to emit raw JS nested functions.
     throw 'FunctionExpressions should not be used';
   }
 }