Added javassist.bytecode.AnnotationsAttribute and support classes.

git-svn-id: http://anonsvn.jboss.org/repos/javassist/trunk@110 30ef5769-5b8d-40dd-aea6-55b5d6557bb3

1 files changed, 110 insertions, 0 deletions

diff --git a/src/main/javassist/bytecode/ParameterAnnotationsAttribute.java b/src/main/javassist/bytecode/ParameterAnnotationsAttribute.java
new file mode 100644
index 00000000..932be9ee
--- /dev/null
+++ b/src/main/javassist/bytecode/ParameterAnnotationsAttribute.java
@@ -0,0 +1,110 @@
+/*
+ * Javassist, a Java-bytecode translator toolkit.
+ * Copyright (C) 1999-2004 Shigeru Chiba. 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;
+
+import java.io.IOException;
+import java.io.DataInputStream;
+
+import javassist.bytecode.annotation.*;
+
+/**
+ * A class representing <code>RuntimeVisibleAnnotations_attribute</code> and
+ * <code>RuntimeInvisibleAnnotations_attribute</code>.
+ */
+public class ParameterAnnotationsAttribute extends AnnotationsAttribute {
+    /**
+     * The name of the <code>RuntimeVisibleParameterAnnotations</code>
+     * attribute.
+     */
+    public static final String visibleTag
+        = "RuntimeVisibleParameterAnnotations";
+
+    /**
+     * The name of the <code>RuntimeInvisibleParameterAnnotations</code>
+     * attribute.
+     */
+    public static final String invisibleTag
+        = "RuntimeInvisibleParameterAnnotations";

+    /**
+     * Constructs
+     * a <code>Runtime(In)VisisbleParameterAnnotations_attribute</code>.
+     *
+     * @param cp            constant pool
+     * @param attrname      attribute name (<code>visibleTag</code> or
+     *                      <code>invisibleTag</code>).
+     * @param info          the contents of this attribute.  It does not
+     *                      include <code>attribute_name_index</code> or
+     *                      <code>attribute_length</code>.
+     */
+    public ParameterAnnotationsAttribute(ConstPool cp, String attrname,
+                                         byte[] info) {
+        super(cp, attrname, info);
+    }
+
+    /**
+     * Constructs an empty
+     * <code>Runtime(In)VisisbleParameterAnnotations_attribute</code>.
+     *
+     * @param cp            constant pool
+     * @param attrname      attribute name (<code>visibleTag</code> or
+     *                      <code>invisibleTag</code>).
+     */
+    public ParameterAnnotationsAttribute(ConstPool cp, String attrname) {
+        this(cp, attrname, new byte[] { 0 });
+    }
+
+    /**
+     * @param n     the attribute name.
+     */
+    ParameterAnnotationsAttribute(ConstPool cp, int n, DataInputStream in)
+        throws IOException
+    {
+        super(cp, n, in);
+    }
+
+    /**
+     * Returns <code>num_parameters</code>. 
+     */
+    public int numParameters() {
+        return info[0] & 0xff;
+    }
+
+    AnnotationsAttribute makeCopy(ConstPool newCp, byte[] info) {
+        return new ParameterAnnotationsAttribute(newCp, getName(), info);
+    }
+
+    /**
+     * Runs the parser to analyze this annotation.
+     *
+     * @see AnnotationsWriter
+     */
+    public void accept(AnnotationsVisitor visitor) throws Exception {
+        int numParam = numParameters();
+        int pos = 1;
+        visitor.beginParameters(numParam);
+        for (int i = 0; i < numParam; ++i) {
+            int num= ByteArray.readU16bit(info, pos);
+            visitor.beginAnnotationsArray(num);
+            for (int j = 0; j < num; ++j) {
+                pos = readAnnotation(visitor, pos);
+            }
+
+            visitor.endAnnotationsArray();
+        }
+
+        visitor.endParameters();
+    }
+}