1 files changed, 66 insertions, 0 deletions
diff --git a/src/main/javassist/bytecode/analysis/Subroutine.java b/src/main/javassist/bytecode/analysis/Subroutine.java
new file mode 100644
index 00000000..924d37a6
--- /dev/null
+++ b/src/main/javassist/bytecode/analysis/Subroutine.java
@@ -0,0 +1,66 @@
+/*
+ * Javassist, a Java-bytecode translator toolkit.
+ * Copyright (C) 1999-2007 Shigeru Chiba, and others. All Rights Reserved.
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License.  Alternatively, the contents of this file may be used under
+ * the terms of the GNU Lesser General Public License Version 2.1 or later.
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ */
+package javassist.bytecode.analysis;
+
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Set;
+
+/**
+ * Represents a nested method subroutine (marked by JSR and RET).
+ *
+ * @author Jason T. Greene
+ */
+public class Subroutine {
+    //private Set callers = new HashSet();
+    private List callers = new ArrayList();
+    private Set access = new HashSet();
+    private int start;
+
+    public Subroutine(int start, int caller) {
+        this.start = start;
+        callers.add(Integer.valueOf(caller));
+    }
+
+    public void addCaller(int caller) {
+        callers.add(Integer.valueOf(caller));
+    }
+
+    public int start() {
+        return start;
+    }
+
+    public void access(int index) {
+        access.add(Integer.valueOf(index));
+    }
+
+    public boolean isAccessed(int index) {
+        return access.contains(Integer.valueOf(index));
+    }
+
+    public Collection accessed() {
+        return access;
+    }
+
+    public Collection callers() {
+        return callers;
+    }
+
+    public String toString() {
+        return "start = " + start + " callers = " + callers.toString();
+    }
+}
+\ No newline at end of file