When pruning preserve the SignatureAttribute

git-svn-id: http://anonsvn.jboss.org/repos/javassist/trunk@356 30ef5769-5b8d-40dd-aea6-55b5d6557bb3

3 files changed, 21 insertions, 0 deletions

diff --git a/src/main/javassist/bytecode/ClassFile.java b/src/main/javassist/bytecode/ClassFile.java
index 013b533e..82221d45 100644
--- a/src/main/javassist/bytecode/ClassFile.java
+++ b/src/main/javassist/bytecode/ClassFile.java
@@ -168,6 +168,13 @@ public final class ClassFile {
             newAttributes.add(visibleAnnotations);
         }
 
+        AttributeInfo signature 
+            = getAttribute(SignatureAttribute.tag);
+        if (signature != null) {
+            signature = signature.copy(cp, null);
+            newAttributes.add(signature);
+        }
+        
         ArrayList list = methods;
         int n = list.size();
         for (int i = 0; i < n; ++i) {
diff --git a/src/main/javassist/bytecode/FieldInfo.java b/src/main/javassist/bytecode/FieldInfo.java
index f0a13faf..5d96df84 100644
--- a/src/main/javassist/bytecode/FieldInfo.java
+++ b/src/main/javassist/bytecode/FieldInfo.java
@@ -100,6 +100,13 @@ public final class FieldInfo {
             newAttributes.add(visibleAnnotations);
         }
 
+        AttributeInfo signature 
+            = getAttribute(SignatureAttribute.tag);
+        if (signature != null) {
+            signature = signature.copy(cp, null);
+            newAttributes.add(signature);
+        }
+        
         int index = getConstantValue();
         if (index != 0) {
             index = constPool.copy(index, cp, null);
diff --git a/src/main/javassist/bytecode/MethodInfo.java b/src/main/javassist/bytecode/MethodInfo.java
index 87b8e76a..8d0cce10 100644
--- a/src/main/javassist/bytecode/MethodInfo.java
+++ b/src/main/javassist/bytecode/MethodInfo.java
@@ -164,6 +164,13 @@ public final class MethodInfo {
         if (ea != null)
             newAttributes.add(ea);
 
+        AttributeInfo signature 
+            = getAttribute(SignatureAttribute.tag);
+        if (signature != null) {
+            signature = signature.copy(cp, null);
+            newAttributes.add(signature);
+        }
+        
         attribute = newAttributes;
         name = cp.addUtf8Info(getName());
         descriptor = cp.addUtf8Info(getDescriptor());