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+/***
+ * ASM: a very small and fast Java bytecode manipulation framework
+ * Copyright (c) 2000-2005 INRIA, France Telecom
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the copyright holders nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
+ * THE POSSIBILITY OF SUCH DAMAGE.
+ */
+package org.objectweb.asm.util;
+
+import org.objectweb.asm.AnnotationVisitor;
+import org.objectweb.asm.Attribute;
+import org.objectweb.asm.util.attrs.Traceable;
+
+/**
+ * An abstract trace visitor.
+ *
+ * @author Eric Bruneton
+ */
+public abstract class TraceAbstractVisitor extends AbstractVisitor {
+
+ /**
+ * Constant used in {@link #appendDescriptor appendDescriptor} for internal
+ * type names in bytecode notation.
+ */
+ public final static int INTERNAL_NAME = 0;
+
+ /**
+ * Constant used in {@link #appendDescriptor appendDescriptor} for field
+ * descriptors, formatted in bytecode notation
+ */
+ public final static int FIELD_DESCRIPTOR = 1;
+
+ /**
+ * Constant used in {@link #appendDescriptor appendDescriptor} for field
+ * signatures, formatted in bytecode notation
+ */
+ public final static int FIELD_SIGNATURE = 2;
+
+ /**
+ * Constant used in {@link #appendDescriptor appendDescriptor} for method
+ * descriptors, formatted in bytecode notation
+ */
+ public final static int METHOD_DESCRIPTOR = 3;
+
+ /**
+ * Constant used in {@link #appendDescriptor appendDescriptor} for method
+ * signatures, formatted in bytecode notation
+ */
+ public final static int METHOD_SIGNATURE = 4;
+
+ /**
+ * Constant used in {@link #appendDescriptor appendDescriptor} for class
+ * signatures, formatted in bytecode notation
+ */
+ public final static int CLASS_SIGNATURE = 5;
+
+ /**
+ * Constant used in {@link #appendDescriptor appendDescriptor} for field or
+ * method return value signatures, formatted in default Java notation
+ * (non-bytecode)
+ */
+ public final static int TYPE_DECLARATION = 6;
+
+ /**
+ * Constant used in {@link #appendDescriptor appendDescriptor} for class
+ * signatures, formatted in default Java notation (non-bytecode)
+ */
+ public final static int CLASS_DECLARATION = 7;
+
+ /**
+ * Constant used in {@link #appendDescriptor appendDescriptor} for method
+ * parameter signatures, formatted in default Java notation (non-bytecode)
+ */
+ public final static int PARAMETERS_DECLARATION = 8;
+
+ /**
+ * Tab for class members.
+ */
+ protected String tab = " ";
+
+ /**
+ * Prints a disassembled view of the given annotation.
+ *
+ * @param desc the class descriptor of the annotation class.
+ * @param visible <tt>true</tt> if the annotation is visible at runtime.
+ * @return a visitor to visit the annotation values.
+ */
+ public AnnotationVisitor visitAnnotation(
+ final String desc,
+ final boolean visible)
+ {
+ buf.setLength(0);
+ buf.append(tab).append('@');
+ appendDescriptor(FIELD_DESCRIPTOR, desc);
+ buf.append('(');
+ text.add(buf.toString());
+ TraceAnnotationVisitor tav = createTraceAnnotationVisitor();
+ text.add(tav.getText());
+ text.add(visible ? ")\n" : ") // invisible\n");
+ return tav;
+ }
+
+ /**
+ * Prints a disassembled view of the given attribute.
+ *
+ * @param attr an attribute.
+ */
+ public void visitAttribute(final Attribute attr) {
+ buf.setLength(0);
+ buf.append(tab).append("ATTRIBUTE ");
+ appendDescriptor(-1, attr.type);
+
+ if (attr instanceof Traceable) {
+ ((Traceable) attr).trace(buf, null);
+ } else {
+ buf.append(" : ").append(attr.toString()).append("\n");
+ }
+
+ text.add(buf.toString());
+ }
+
+ /**
+ * Does nothing.
+ */
+ public void visitEnd() {
+ // does nothing
+ }
+
+ // ------------------------------------------------------------------------
+ // Utility methods
+ // ------------------------------------------------------------------------
+
+ protected TraceAnnotationVisitor createTraceAnnotationVisitor() {
+ return new TraceAnnotationVisitor();
+ }
+
+ /**
+ * Appends an internal name, a type descriptor or a type signature to
+ * {@link #buf buf}.
+ *
+ * @param type indicates if desc is an internal name, a field descriptor, a
+ * method descriptor, a class signature, ...
+ * @param desc an internal name, type descriptor, or type signature. May be
+ * <tt>null</tt>.
+ */
+ protected void appendDescriptor(final int type, final String desc) {
+ if (type == CLASS_SIGNATURE || type == FIELD_SIGNATURE
+ || type == METHOD_SIGNATURE)
+ {
+ if (desc != null) {
+ buf.append("// signature ").append(desc).append('\n');
+ }
+ } else {
+ buf.append(desc);
+ }
+ }
+
+}