Handle int constant

pkg/compiler/lib/src/js_backend/constant_handler_javascript.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.
 
 import '../compile_time_constants.dart';
 import '../compiler.dart' show Compiler;
 import '../constants/constant_system.dart';
 import '../constants/expressions.dart';
 import '../constants/values.dart';
 import '../elements/elements.dart';
@@ skipping 95 matching lines @@
   }
 }
 
 /**
  * The [JavaScriptConstantCompiler] is used to keep track of compile-time
  * constants, initializations of global and static fields, and default values of
  * optional parameters for the JavaScript interpretation of constants.
  */
 class JavaScriptConstantCompiler extends ConstantCompilerBase
     implements BackendConstantEnvironment {
-  /** Set of all registered compiled constants. */
-  final Set<ConstantValue> compiledConstants = new Set<ConstantValue>();
-
   // TODO(johnniwinther): Move this to the backend constant handler.
   /** Caches the statics where the initial value cannot be eagerly compiled. */
   final Set<FieldElement> lazyStatics = new Set<FieldElement>();
 
   // Constants computed for constant expressions.
   final Map<Node, ConstantExpression> nodeConstantMap =
       new Map<Node, ConstantExpression>();
 
   // Constants computed for metadata.
   // TODO(johnniwinther): Remove this when no longer used by
@@ skipping 17 matching lines @@
       registerLazyStatic(element);
     }
     return value;
   }
 
   @override
   void registerLazyStatic(FieldElement element) {
     lazyStatics.add(element);
   }
 
-  void addCompileTimeConstantForEmission(ConstantValue constant) {
-    compiledConstants.add(constant);
-  }
-
   List<FieldElement> getLazilyInitializedFieldsForEmission() {
     return new List<FieldElement>.from(lazyStatics);
   }
 
-  /**
-   * Returns a list of constants topologically sorted so that dependencies
-   * appear before the dependent constant.  [preSortCompare] is a comparator
-   * function that gives the constants a consistent order prior to the
-   * topological sort which gives the constants an ordering that is less
-   * sensitive to perturbations in the source code.
-   */
-  List<ConstantValue> getConstantsForEmission([preSortCompare]) {
-    // We must emit dependencies before their uses.
-    Set<ConstantValue> seenConstants = new Set<ConstantValue>();
-    List<ConstantValue> result = new List<ConstantValue>();
-
-    void addConstant(ConstantValue constant) {
-      if (!seenConstants.contains(constant)) {
-        constant.getDependencies().forEach(addConstant);
-        assert(!seenConstants.contains(constant));
-        result.add(constant);
-        seenConstants.add(constant);
-      }
-    }
-
-    List<ConstantValue> sorted = compiledConstants.toList();
-    if (preSortCompare != null) {
-      sorted.sort(preSortCompare);
-    }
-    sorted.forEach(addConstant);
-    return result;
-  }
-
   ConstantExpression compileNode(Node node, TreeElements elements,
       {bool enforceConst: true}) {
     return compileNodeWithDefinitions(node, elements, isConst: enforceConst);
   }
 
   ConstantExpression compileNodeWithDefinitions(
       Node node, TreeElements definitions,
       {bool isConst: true}) {
     ConstantExpression constant = nodeConstantMap[node];
     if (constant != null && getConstantValue(constant) != null) {
@@ skipping 58 matching lines @@
 class ForgetConstantNodeVisitor extends Visitor {
   final JavaScriptConstantCompiler constants;
 
   ForgetConstantNodeVisitor(this.constants);
 
   void visitNode(Node node) {
     node.visitChildren(this);
     constants.nodeConstantMap.remove(node);
   }
 }