implemented CtField#getConstantValue().

git-svn-id: http://anonsvn.jboss.org/repos/javassist/trunk@128 30ef5769-5b8d-40dd-aea6-55b5d6557bb3

1 files changed, 27 insertions, 1 deletions

diff --git a/src/main/javassist/bytecode/FieldInfo.java b/src/main/javassist/bytecode/FieldInfo.java
index 54ae1ba6..ff45f1ba 100644
--- a/src/main/javassist/bytecode/FieldInfo.java
+++ b/src/main/javassist/bytecode/FieldInfo.java
@@ -60,7 +60,15 @@ public final class FieldInfo {
     }
 
     void prune(ConstPool cp) {
-        attribute = null;
+        int index = getConstantValue();
+        if (index == 0)
+            attribute = null;
+        else {
+            index = constPool.copy(index, cp, null);
+            attribute = new LinkedList();
+            attribute.add(new ConstantAttribute(cp, index));
+        }
+
         name = cp.addUtf8Info(getName());
         descriptor = cp.addUtf8Info(getDescriptor());
         constPool = cp;
@@ -126,6 +134,24 @@ public final class FieldInfo {
     }
 
     /**
+     * Finds a ConstantValue attribute and returns the index into
+     * the <code>constant_pool</code> table.
+     *
+     * @return 0    if a ConstantValue attribute is not found.
+     */
+    public int getConstantValue() {
+        if ((accessFlags & AccessFlag.STATIC) == 0)
+            return 0;
+
+        ConstantAttribute attr
+            = (ConstantAttribute)getAttribute(ConstantAttribute.tag);
+        if (attr == null)
+            return 0;
+        else
+            return attr.getConstantValue();
+    }
+
+    /**
      * Returns all the attributes.
      * A new element can be added to the returned list
      * and an existing element can be removed from the list.