Evaluate constant instance creation expressions in ConstantValueComputer.

editor/tools/plugins/com.google.dart.engine/src/com/google/dart/engine/ast/InstanceCreationExpression.java

Index: editor/tools/plugins/com.google.dart.engine/src/com/google/dart/engine/ast/InstanceCreationExpression.java
diff --git a/editor/tools/plugins/com.google.dart.engine/src/com/google/dart/engine/ast/InstanceCreationExpression.java b/editor/tools/plugins/com.google.dart.engine/src/com/google/dart/engine/ast/InstanceCreationExpression.java
index ef4045c30a823618dd2e9455e390de75b8dd6220..5bc3ff3f60c1ebbea7ad6ec97d1cb18e1e2b0845 100644
--- a/editor/tools/plugins/com.google.dart.engine/src/com/google/dart/engine/ast/InstanceCreationExpression.java
+++ b/editor/tools/plugins/com.google.dart.engine/src/com/google/dart/engine/ast/InstanceCreationExpression.java
@@ -14,6 +14,7 @@
 package com.google.dart.engine.ast;
 
 import com.google.dart.engine.element.ConstructorElement;
+import com.google.dart.engine.internal.constant.EvaluationResultImpl;
 import com.google.dart.engine.scanner.Keyword;
 import com.google.dart.engine.scanner.KeywordToken;
 import com.google.dart.engine.scanner.Token;
@@ -52,6 +53,11 @@ public class InstanceCreationExpression extends Expression {
   private ConstructorElement staticElement;
 
   /**
+   * The result of evaluating this expression, if it is constant.
+   */
+  private EvaluationResultImpl result;
+
+  /**
    * Initialize a newly created instance creation expression.
    * 
    * @param keyword the keyword used to indicate how an object should be created
@@ -99,6 +105,17 @@ public class InstanceCreationExpression extends Expression {
   }
 
   /**
+   * Return the result of evaluating this constant as a compile-time constant expression, or
+   * {@code null} if this variable is not a 'const' expression or an error prevented the result from
+   * being computed.
+   * 
+   * @return the result of evaluating this constant
+   */
+  public EvaluationResultImpl getEvaluationResult() {
+    return result;
+  }
+
+  /**
    * Return the keyword used to indicate how an object should be created.
    * 
    * @return the keyword used to indicate how an object should be created
@@ -152,6 +169,16 @@ public class InstanceCreationExpression extends Expression {
   }
 
   /**
+   * Set the result of evaluating this expression as a compile-time constant expression to the given
+   * result.
+   * 
+   * @param result the result of evaluating this expression
+   */
+  public void setEvaluationResult(EvaluationResultImpl result) {
+    this.result = result;
+  }
+
+  /**
    * Set the keyword used to indicate how an object should be created to the given keyword.
    * 
    * @param keyword the keyword used to indicate how an object should be created