From 8cccc50b97c49907e2c064c4e3252a59a04e93c9 Mon Sep 17 00:00:00 2001
From: unknown <evan@.(none)>
Date: Wed, 7 May 2008 16:18:03 -0700
Subject: [PATCH] fix selection for left side of a assignment such as "a = b +
 c"

---
 .../cs/bodik/svelte/slicers/JavaLanguage.java       | 21 ++++++++++++++++-----
 1 file changed, 16 insertions(+), 5 deletions(-)

diff --git a/Svelte/src/edu/berkeley/cs/bodik/svelte/slicers/JavaLanguage.java b/Svelte/src/edu/berkeley/cs/bodik/svelte/slicers/JavaLanguage.java
index 6a3f9e9..5dfff6f 100644
--- a/Svelte/src/edu/berkeley/cs/bodik/svelte/slicers/JavaLanguage.java
+++ b/Svelte/src/edu/berkeley/cs/bodik/svelte/slicers/JavaLanguage.java
@@ -371,17 +371,14 @@ public class JavaLanguage implements ILanguage {
 					return CGNodeUtils.getNthArrayStoreStatementFromOffset(cgn,
 							parent.getStartPosition(), parent.getStartPosition()+parent.getLength(),
 							substatementIndex, SSAArrayStoreInstruction.class);
-				}
-				
-				if (parent.getNodeType() == ASTNode.ARRAY_CREATION) {
+				} else if (parent.getNodeType() == ASTNode.ARRAY_CREATION) {
 					ArrayCreation ac = (ArrayCreation) covering.getParent();
 					substatementIndex = ac.dimensions().indexOf(covering);
 					if (substatementIndex != -1) {
 						position.offsetStart = ac.getStartPosition();
 						position.offsetEnd = ac.getStartPosition() + ac.getLength();
 					}
-				}
-				else if (parent.getNodeType() == ASTNode.INFIX_EXPRESSION) {
+				} else if (parent.getNodeType() == ASTNode.INFIX_EXPRESSION) {
 					InfixExpression ie = (InfixExpression) covering.getParent();
 					if ( covering == ie.getLeftOperand() ) {
 						substatementIndex = 0;
@@ -490,6 +487,20 @@ public class JavaLanguage implements ILanguage {
 						}
 						substatementIndex = 0;
 					}
+				} else if ( parent.getNodeType() == ASTNode.ASSIGNMENT ) {
+					Assignment assign = (Assignment) parent;
+					if ( assign.getLeftHandSide() == covering ) {
+						// slice on value of right hand side 
+						Expression rhs = assign.getRightHandSide();
+						// go past parentheses to get to the real value
+						while ( rhs.getNodeType() == ASTNode.PARENTHESIZED_EXPRESSION )
+							rhs = ((ParenthesizedExpression)rhs).getExpression();
+						position.offsetStart = rhs.getStartPosition();
+						position.offsetEnd = rhs.getStartPosition() + rhs.getLength();
+					}
+					// else
+					// right hand side, give warning
+					
 				}
 
 				if (substatementIndex != -1) {
-- 
2.11.4.GIT