First step toward fixing cascades (issue 5062)

compiler/java/com/google/dart/compiler/ast/DartFunctionObjectInvocation.java

Index: compiler/java/com/google/dart/compiler/ast/DartFunctionObjectInvocation.java
===================================================================
--- compiler/java/com/google/dart/compiler/ast/DartFunctionObjectInvocation.java	(revision 12980)
+++ compiler/java/com/google/dart/compiler/ast/DartFunctionObjectInvocation.java	(working copy)
@@ -12,11 +12,17 @@
 public class DartFunctionObjectInvocation extends DartInvocation {
 
   private DartExpression target;
+  private boolean isCascade;

[scheglov, 2012/09/27 22:38:43]

Can you give example of cascade here?

[Brian Wilkerson, 2012/09/28 15:54:39]

Not off the top of my head. I'll double check and make sure that this is
necessary and back it out in a later CL if it isn't.

 
-  public DartFunctionObjectInvocation(DartExpression target,
+  public DartFunctionObjectInvocation(DartExpression target, List<DartExpression> args) {
+    this(target, false, args);
+  }
+
+  public DartFunctionObjectInvocation(DartExpression target, boolean isCascade,
                                       List<DartExpression> args) {
     super(args);
     this.target = becomeParentOf(target);
+    this.isCascade = isCascade;
   }
 
   @Override
@@ -24,6 +30,24 @@
     return target;
   }
 
+  public DartExpression getRealTarget() {

[scheglov, 2012/09/27 22:38:43]

We could put (at least implementation) into ASTNodes.

[Brian Wilkerson, 2012/09/28 15:54:39]

Let's discuss this off-line.

+    if (isCascade) {
+      DartNode ancestor = getParent();
+      while (!(ancestor instanceof DartCascadeExpression)) {
+        if (ancestor == null) {
+          return target;
+        }
+        ancestor = ancestor.getParent();
+      }
+      return ((DartCascadeExpression) ancestor).getTarget();
+    }
+    return target;
+  }
+
+  public boolean isCascade() {
+    return isCascade;
+  }
+
   @Override
   public void visitChildren(ASTVisitor<?> visitor) {
     safelyVisitChild(target, visitor);