Additional fixes for cascades (issue 5146)

editor/tools/plugins/com.google.dart.tools.core/src/com/google/dart/tools/core/utilities/ast/DartElementLocator.java

Index: editor/tools/plugins/com.google.dart.tools.core/src/com/google/dart/tools/core/utilities/ast/DartElementLocator.java
===================================================================
--- editor/tools/plugins/com.google.dart.tools.core/src/com/google/dart/tools/core/utilities/ast/DartElementLocator.java	(revision 13022)
+++ editor/tools/plugins/com.google.dart.tools.core/src/com/google/dart/tools/core/utilities/ast/DartElementLocator.java	(working copy)
@@ -51,13 +51,13 @@
 import org.eclipse.jface.text.Region;
 
 /**
- * Instances of the class <code>DartElementLocator</code> locate the {@link DartElement Dart
- * element(s)} associated with a source range, given the AST structure built from the source.
+ * Instances of the class <code>DartElementLocator</code> locate the {@link DartElement Dart element(s)} associated
+ * with a source range, given the AST structure built from the source.
  */
 public class DartElementLocator extends ASTVisitor<Void> {
   /**
-   * Instances of the class <code>DartElementFoundException</code> are used to cancel visiting after
-   * an element has been found.
+   * Instances of the class <code>DartElementFoundException</code> are used to cancel visiting after an element has been
+   * found.
    */
   private class DartElementFoundException extends RuntimeException {
     private static final long serialVersionUID = 1L;
@@ -97,8 +97,8 @@
   private IRegion wordRegion;
 
   /**
-   * The region within the element's compilation unit that needs to be highlighted, or
-   * <code>null</code> if there is no element.
+   * The region within the element's compilation unit that needs to be highlighted, or <code>null</code>
+   * if there is no element.
    */
   private IRegion candidateRegion;
 
@@ -136,8 +136,8 @@
    * 
    * @param input the compilation unit containing the element to be found
    * @param offset the offset used to identify the element
-   * @param includeDeclarations <code>true</code> if elements should be returned for declaration
-   *          sites as well as for reference sites
+   * @param includeDeclarations <code>true</code> if elements should be returned for declaration sites
+   *          as well as for reference sites
    */
   public DartElementLocator(CompilationUnit input, int offset, boolean includeDeclarations) {
     this(input, offset, offset, includeDeclarations);
@@ -164,10 +164,11 @@
    * @param input the compilation unit containing the element to be found
    * @param start the start offset of the range used to identify the element
    * @param end the end offset of the range used to identify the element
-   * @param includeDeclarations <code>true</code> if elements should be returned for declaration
-   *          sites as well as for reference sites
+   * @param includeDeclarations <code>true</code> if elements should be returned for declaration sites
+   *          as well as for reference sites
    */
-  public DartElementLocator(CompilationUnit input, int start, int end, boolean includeDeclarations) {
+  public DartElementLocator(
+      CompilationUnit input, int start, int end, boolean includeDeclarations) {
     this.compilationUnit = input;
     this.startOffset = start;
     this.endOffset = end;
@@ -175,8 +176,7 @@
   }
 
   /**
-   * Return the region within the element's compilation unit that needs to be highlighted, or
-   * <code>null
+   * Return the region within the element's compilation unit that needs to be highlighted, or <code>null
    * </code> if either there is no element or if the element can be used to determine the region.
    * 
    * @return the region within the element's compilation unit that needs to be highlighted
@@ -186,8 +186,8 @@
   }
 
   /**
-   * Return the element that was found that corresponds to the given source range, or
-   * <code>null</code> if there is no such element.
+   * Return the element that was found that corresponds to the given source range, or <code>null</code>
+   * if there is no such element.
    * 
    * @return the element that was found
    */
@@ -196,7 +196,7 @@
   }
 
   /**
-   * Return the resolved element that was found that corresponds to the given source range, or
+   * Return the resolved element that was found that corresponds to the given source range, or 
    * <code>null</code> if there is no such element.
    * 
    * @return the element that was found
@@ -218,8 +218,8 @@
 
   /**
    * Search within the given AST node for an identifier representing a {@link DartElement Dart
-   * element} in the specified source range. Return the element that was found, or <code>null</code>
-   * if no element was found.
+   * element} in the specified source range. Return the element that was found, or <code>null</code> if
+   * no element was found.
    * 
    * @param node the AST node within which to search
    * @return the element that was found
@@ -230,8 +230,10 @@
     } catch (DartElementFoundException exception) {
       // A node with the right source position was found.
     } catch (Exception exception) {
-      DartCore.logInformation("Unable to locate element at offset (" + startOffset + " - "
-          + endOffset + ") in " + compilationUnit.getElementName(), exception);
+      DartCore.logInformation(
+          "Unable to locate element at offset (" + startOffset + " - " + endOffset + ") in "
+              + compilationUnit.getElementName(),
+          exception);
       return null;
     }
     return foundElement;
@@ -244,9 +246,10 @@
       int start = node.getSourceInfo().getOffset();
       int end = start + node.getSourceInfo().getLength();
       if (start <= startOffset && endOffset <= end) {
-        DartExpression target = node.getTarget();
-        wordRegion = new Region(target.getSourceInfo().getOffset()
-            + target.getSourceInfo().getLength(), end);
+        DartExpression target = node.getRealTarget();
+        wordRegion = new Region(
+            target.getSourceInfo().getOffset() + target.getSourceInfo().getLength(),
+            end);
         Element targetElement = node.getElement();
         findElementFor(targetElement);
         throw new DartElementFoundException();
@@ -264,8 +267,9 @@
       if (start <= startOffset && endOffset <= end) {
         DartExpression leftOperand = node.getArg1();
         DartExpression rightOperand = node.getArg2();
-        wordRegion = computeOperatorRegion(leftOperand.getSourceInfo().getOffset()
-            + leftOperand.getSourceInfo().getLength(), rightOperand.getSourceInfo().getOffset() - 1);
+        wordRegion = computeOperatorRegion(
+            leftOperand.getSourceInfo().getOffset() + leftOperand.getSourceInfo().getLength(),
+            rightOperand.getSourceInfo().getOffset() - 1);
         Element targetElement = node.getElement();
         findElementFor(targetElement);
         throw new DartElementFoundException();
@@ -325,8 +329,9 @@
               try {
                 DartImport[] imports = compilationUnit.getLibrary().getImports();
                 for (DartImport imprt : imports) {
-                  if (Objects.equal(imprt.getLibrary(), foundElement)
-                      && Objects.equal(imprt.getPrefix(), node.getName())) {
+                  if (Objects.equal(imprt.getLibrary(), foundElement) && Objects.equal(
+                      imprt.getPrefix(),
+                      node.getName())) {
                     foundElement = imprt;
                     SourceRange range = imprt.getNameRange();
                     candidateRegion = new Region(range.getOffset(), range.getLength());