Report CompileTimeErrorCode.NON_CONST_MAP_AS_EXPRESSION_STATEMENT

editor/tools/plugins/com.google.dart.engine/src/com/google/dart/engine/internal/verifier/ErrorVerifier.java

Index: editor/tools/plugins/com.google.dart.engine/src/com/google/dart/engine/internal/verifier/ErrorVerifier.java
diff --git a/editor/tools/plugins/com.google.dart.engine/src/com/google/dart/engine/internal/verifier/ErrorVerifier.java b/editor/tools/plugins/com.google.dart.engine/src/com/google/dart/engine/internal/verifier/ErrorVerifier.java
index ab69d17a64973804be7a11ba42e7529d41c44aa0..567b5d53eff6af58e2c994d56c36df996b6a29a1 100644
--- a/editor/tools/plugins/com.google.dart.engine/src/com/google/dart/engine/internal/verifier/ErrorVerifier.java
+++ b/editor/tools/plugins/com.google.dart.engine/src/com/google/dart/engine/internal/verifier/ErrorVerifier.java
@@ -466,6 +466,7 @@ public class ErrorVerifier extends RecursiveASTVisitor<Void> {
         }
       }
     }
+    checkForNonConstMapAsExpressionStatement(node);
     return super.visitMapLiteral(node);
   }
 
@@ -1758,6 +1759,32 @@ public class ErrorVerifier extends RecursiveASTVisitor<Void> {
   }
 
   /**
+   * This verifies the passed map literal either:
+   * <ul>
+   * <li>has {@code const modifier}</li>
+   * <li>has explicit type arguments</li>
+   * <li>is not expression of the expression statement</li>
+   * <ul>
+   * 
+   * @param node the map literal to evaluate
+   * @return {@code true} if and only if an error code is generated on the passed node
+   * @see CompileTimeErrorCode#NON_CONST_MAP_AS_EXPRESSION_STATEMENT
+   */
+  private boolean checkForNonConstMapAsExpressionStatement(MapLiteral node) {
+    if (node.getModifier() != null) {
+      return false;
+    }
+    if (node.getTypeArguments() != null) {
+      return false;
+    }
+    if (!(node.getParent() instanceof ExpressionStatement)) {
+      return false;
+    }
+    errorReporter.reportError(CompileTimeErrorCode.NON_CONST_MAP_AS_EXPRESSION_STATEMENT, node);
+    return true;
+  }
+
+  /**
    * This verifies the passed method declaration of operator {@code []=}, has {@code void} return
    * type.
    *