Fix for issue 4429 - remove #resource directive

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 10526)
+++ editor/tools/plugins/com.google.dart.tools.core/src/com/google/dart/tools/core/utilities/ast/DartElementLocator.java	(working copy)
@@ -14,8 +14,6 @@
 package com.google.dart.tools.core.utilities.ast;
 
 import com.google.common.base.Objects;
-import com.google.dart.compiler.DartSource;
-import com.google.dart.compiler.LibrarySource;
 import com.google.dart.compiler.ast.ASTVisitor;
 import com.google.dart.compiler.ast.DartArrayAccess;
 import com.google.dart.compiler.ast.DartBinaryExpression;
@@ -23,7 +21,6 @@
 import com.google.dart.compiler.ast.DartIdentifier;
 import com.google.dart.compiler.ast.DartImportDirective;
 import com.google.dart.compiler.ast.DartNode;
-import com.google.dart.compiler.ast.DartResourceDirective;
 import com.google.dart.compiler.ast.DartSourceDirective;
 import com.google.dart.compiler.ast.DartStringLiteral;
 import com.google.dart.compiler.ast.DartUnaryExpression;
@@ -40,7 +37,6 @@
 import com.google.dart.tools.core.model.DartImport;
 import com.google.dart.tools.core.model.DartLibrary;
 import com.google.dart.tools.core.model.DartModelException;
-import com.google.dart.tools.core.model.DartResource;
 import com.google.dart.tools.core.model.SourceRange;
 import com.google.dart.tools.core.model.SourceReference;
 import com.google.dart.tools.core.utilities.bindings.BindingUtils;
@@ -48,16 +44,14 @@
 import org.eclipse.jface.text.IRegion;
 import org.eclipse.jface.text.Region;
 
-import java.net.URI;
-
 /**
- * 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;
@@ -97,14 +91,14 @@
   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;
 
   /**
-   * The resolved element that was found that corresponds to the given source range, or
-   * <code>null</code> if there is no such element.
+   * The resolved element that was found that corresponds to the given source range, or <code>null
+   * </code> if there is no such element.
    */
   private Element resolvedElement;
 
@@ -136,8 +130,8 @@
    * 
    * @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 +158,11 @@
    * @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;
@@ -175,9 +170,8 @@
   }
 
   /**
-   * 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, 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 +180,8 @@
   }
 
   /**
-   * 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 +190,7 @@
   }
 
   /**
-   * 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 +212,8 @@
 
   /**
    * 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 +224,10 @@
     } 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;
@@ -245,8 +241,9 @@
       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);
+        wordRegion = new Region(
+            target.getSourceInfo().getOffset() + target.getSourceInfo().getLength(),
+            end);
         Element targetElement = node.getElement();
         findElementFor(targetElement);
         throw new DartElementFoundException();
@@ -264,8 +261,9 @@
       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();
@@ -309,8 +307,9 @@
               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());
@@ -397,28 +396,6 @@
           if (sourcedUnit != null && sourcedUnit.exists()) {
             foundElement = sourcedUnit;
           }
-        } else if (parent instanceof DartResourceDirective
-            && ((DartResourceDirective) parent).getResourceUri() == node) {
-          //resolvedElement = ((DartResourceDirective) parent).getElement();
-          DartLibrary library = compilationUnit.getLibrary();
-          try {
-            DartSource unitSource = compilationUnit.getSourceRef();
-            if (unitSource != null) {
-              LibrarySource librarySource = unitSource.getLibrary();
-              if (librarySource != null) {
-                DartSource resourceSource = librarySource.getSourceFor(node.getValue());
-                if (resourceSource != null) {
-                  URI resourceUri = resourceSource.getUri();
-                  DartResource resource = library.getResource(resourceUri);
-                  if (resource != null && resource.exists()) {
-                    foundElement = resource;
-                  }
-                }
-              }
-            }
-          } catch (DartModelException exception) {
-            foundElement = null;
-          }
         }
         throw new DartElementFoundException();
       }