asm4/src/org/objectweb/asm/tree/MethodNode.java - toolchain/jill - Git at Google

 /***
  * ASM: a very small and fast Java bytecode manipulation framework
  * Copyright (c) 2000-2011 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.tree;

 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.List;

 import org.objectweb.asm.AnnotationVisitor;
 import org.objectweb.asm.Attribute;
 import org.objectweb.asm.ClassVisitor;
 import org.objectweb.asm.Handle;
 import org.objectweb.asm.Label;
 import org.objectweb.asm.MethodVisitor;
 import org.objectweb.asm.Opcodes;
 import org.objectweb.asm.Type;

 /**
  * A node that represents a method.
  *
  * @author Eric Bruneton
  */
 public class MethodNode extends MethodVisitor {

     /**
      * The method's access flags (see {@link Opcodes}). This field also
      * indicates if the method is synthetic and/or deprecated.
      */
     public int access;

     /**
      * The method's name.
      */
     public String name;

     /**
      * The method's descriptor (see {@link Type}).
      */
     public String desc;

     /**
      * The method's signature. May be <tt>null</tt>.
      */
     public String signature;

     /**
      * The internal names of the method's exception classes (see
      * {@link Type#getInternalName() getInternalName}). This list is a list of
      * {@link String} objects.
      */
     public List<String> exceptions;

     /**
      * The runtime visible annotations of this method. This list is a list of
      * {@link AnnotationNode} objects. May be <tt>null</tt>.
      *
      * @associates org.objectweb.asm.tree.AnnotationNode
      * @label visible
      */
     public List<AnnotationNode> visibleAnnotations;

     /**
      * The runtime invisible annotations of this method. This list is a list of
      * {@link AnnotationNode} objects. May be <tt>null</tt>.
      *
      * @associates org.objectweb.asm.tree.AnnotationNode
      * @label invisible
      */
     public List<AnnotationNode> invisibleAnnotations;

     /**
      * The non standard attributes of this method. This list is a list of
      * {@link Attribute} objects. May be <tt>null</tt>.
      *
      * @associates org.objectweb.asm.Attribute
      */
     public List<Attribute> attrs;

     /**
      * The default value of this annotation interface method. This field must be
      * a {@link Byte}, {@link Boolean}, {@link Character}, {@link Short},
      * {@link Integer}, {@link Long}, {@link Float}, {@link Double},
      * {@link String} or {@link Type}, or an two elements String array (for
      * enumeration values), a {@link AnnotationNode}, or a {@link List} of
      * values of one of the preceding types. May be <tt>null</tt>.
      */
     public Object annotationDefault;

     /**
      * The runtime visible parameter annotations of this method. These lists are
      * lists of {@link AnnotationNode} objects. May be <tt>null</tt>.
      *
      * @associates org.objectweb.asm.tree.AnnotationNode
      * @label invisible parameters
      */
     public List<AnnotationNode>[] visibleParameterAnnotations;

     /**
      * The runtime invisible parameter annotations of this method. These lists
      * are lists of {@link AnnotationNode} objects. May be <tt>null</tt>.
      *
      * @associates org.objectweb.asm.tree.AnnotationNode
      * @label visible parameters
      */
     public List<AnnotationNode>[] invisibleParameterAnnotations;

     /**
      * The instructions of this method. This list is a list of
      * {@link AbstractInsnNode} objects.
      *
      * @associates org.objectweb.asm.tree.AbstractInsnNode
      * @label instructions
      */
     public InsnList instructions;

     /**
      * The try catch blocks of this method. This list is a list of
      * {@link TryCatchBlockNode} objects.
      *
      * @associates org.objectweb.asm.tree.TryCatchBlockNode
      */
     public List<TryCatchBlockNode> tryCatchBlocks;

     /**
      * The maximum stack size of this method.
      */
     public int maxStack;

     /**
      * The maximum number of local variables of this method.
      */
     public int maxLocals;

     /**
      * The local variables of this method. This list is a list of
      * {@link LocalVariableNode} objects. May be <tt>null</tt>
      *
      * @associates org.objectweb.asm.tree.LocalVariableNode
      */
     public List<LocalVariableNode> localVariables;

     /**
      * If the accept method has been called on this object.
      */
     private boolean visited;

     /**
      * Constructs an uninitialized {@link MethodNode}. <i>Subclasses must not
      * use this constructor</i>. Instead, they must use the
      * {@link #MethodNode(int)} version.
      */
     public MethodNode() {
         this(Opcodes.ASM4);
     }

     /**
      * Constructs an uninitialized {@link MethodNode}.
      *
      * @param api
      *            the ASM API version implemented by this visitor. Must be one
      *            of {@link Opcodes#ASM4}.
      */
     public MethodNode(final int api) {
         super(api);
         this.instructions = new InsnList();
     }

     /**
      * Constructs a new {@link MethodNode}. <i>Subclasses must not use this
      * constructor</i>. Instead, they must use the
      * {@link #MethodNode(int, int, String, String, String, String[])} version.
      *
      * @param access
      *            the method's access flags (see {@link Opcodes}). This
      *            parameter also indicates if the method is synthetic and/or
      *            deprecated.
      * @param name
      *            the method's name.
      * @param desc
      *            the method's descriptor (see {@link Type}).
      * @param signature
      *            the method's signature. May be <tt>null</tt>.
      * @param exceptions
      *            the internal names of the method's exception classes (see
      *            {@link Type#getInternalName() getInternalName}). May be
      *            <tt>null</tt>.
      */
     public MethodNode(final int access, final String name, final String desc,
             final String signature, final String[] exceptions) {
         this(Opcodes.ASM4, access, name, desc, signature, exceptions);
     }

     /**
      * Constructs a new {@link MethodNode}.
      *
      * @param api
      *            the ASM API version implemented by this visitor. Must be one
      *            of {@link Opcodes#ASM4}.
      * @param access
      *            the method's access flags (see {@link Opcodes}). This
      *            parameter also indicates if the method is synthetic and/or
      *            deprecated.
      * @param name
      *            the method's name.
      * @param desc
      *            the method's descriptor (see {@link Type}).
      * @param signature
      *            the method's signature. May be <tt>null</tt>.
      * @param exceptions
      *            the internal names of the method's exception classes (see
      *            {@link Type#getInternalName() getInternalName}). May be
      *            <tt>null</tt>.
      */
     public MethodNode(final int api, final int access, final String name,
             final String desc, final String signature, final String[] exceptions) {
         super(api);
         this.access = access;
         this.name = name;
         this.desc = desc;
         this.signature = signature;
         this.exceptions = new ArrayList<String>(exceptions == null ? 0
                 : exceptions.length);
         boolean isAbstract = (access & Opcodes.ACC_ABSTRACT) != 0;
         if (!isAbstract) {
             this.localVariables = new ArrayList<LocalVariableNode>(5);
         }
         this.tryCatchBlocks = new ArrayList<TryCatchBlockNode>();
         if (exceptions != null) {
             this.exceptions.addAll(Arrays.asList(exceptions));
         }
         this.instructions = new InsnList();
     }

     // ------------------------------------------------------------------------
     // Implementation of the MethodVisitor abstract class
     // ------------------------------------------------------------------------

     @Override
     public AnnotationVisitor visitAnnotationDefault() {
         return new AnnotationNode(new ArrayList<Object>(0) {
             @Override
             public boolean add(final Object o) {
                 annotationDefault = o;
                 return super.add(o);
             }
         });
     }

     @Override
     public AnnotationVisitor visitAnnotation(final String desc,
             final boolean visible) {
         AnnotationNode an = new AnnotationNode(desc);
         if (visible) {
             if (visibleAnnotations == null) {
                 visibleAnnotations = new ArrayList<AnnotationNode>(1);
             }
             visibleAnnotations.add(an);
         } else {
             if (invisibleAnnotations == null) {
                 invisibleAnnotations = new ArrayList<AnnotationNode>(1);
             }
             invisibleAnnotations.add(an);
         }
         return an;
     }

     @Override
     public AnnotationVisitor visitParameterAnnotation(final int parameter,
             final String desc, final boolean visible) {
         AnnotationNode an = new AnnotationNode(desc);
         if (visible) {
             if (visibleParameterAnnotations == null) {
                 int params = Type.getArgumentTypes(this.desc).length;
                 visibleParameterAnnotations = (List<AnnotationNode>[]) new List<?>[params];
             }
             if (visibleParameterAnnotations[parameter] == null) {
                 visibleParameterAnnotations[parameter] = new ArrayList<AnnotationNode>(
                         1);
             }
             visibleParameterAnnotations[parameter].add(an);
         } else {
             if (invisibleParameterAnnotations == null) {
                 int params = Type.getArgumentTypes(this.desc).length;
                 invisibleParameterAnnotations = (List<AnnotationNode>[]) new List<?>[params];
             }
             if (invisibleParameterAnnotations[parameter] == null) {
                 invisibleParameterAnnotations[parameter] = new ArrayList<AnnotationNode>(
                         1);
             }
             invisibleParameterAnnotations[parameter].add(an);
         }
         return an;
     }

     @Override
     public void visitAttribute(final Attribute attr) {
         if (attrs == null) {
             attrs = new ArrayList<Attribute>(1);
         }
         attrs.add(attr);
     }

     @Override
     public void visitCode() {
     }

     @Override
     public void visitFrame(final int type, final int nLocal,
             final Object[] local, final int nStack, final Object[] stack) {
         instructions.add(new FrameNode(type, nLocal, local == null ? null
                 : getLabelNodes(local), nStack, stack == null ? null
                 : getLabelNodes(stack)));
     }

     @Override
     public void visitInsn(final int opcode) {
         instructions.add(new InsnNode(opcode));
     }

     @Override
     public void visitIntInsn(final int opcode, final int operand) {
         instructions.add(new IntInsnNode(opcode, operand));
     }

     @Override
     public void visitVarInsn(final int opcode, final int var) {
         instructions.add(new VarInsnNode(opcode, var));
     }

     @Override
     public void visitTypeInsn(final int opcode, final String type) {
         instructions.add(new TypeInsnNode(opcode, type));
     }

     @Override
     public void visitFieldInsn(final int opcode, final String owner,
             final String name, final String desc) {
         instructions.add(new FieldInsnNode(opcode, owner, name, desc));
     }

     @Override
     public void visitMethodInsn(final int opcode, final String owner,
             final String name, final String desc) {
         instructions.add(new MethodInsnNode(opcode, owner, name, desc));
     }

     @Override
     public void visitInvokeDynamicInsn(String name, String desc, Handle bsm,
             Object... bsmArgs) {
         instructions.add(new InvokeDynamicInsnNode(name, desc, bsm, bsmArgs));
     }

     @Override
     public void visitJumpInsn(final int opcode, final Label label) {
         instructions.add(new JumpInsnNode(opcode, getLabelNode(label)));
     }

     @Override
     public void visitLabel(final Label label) {
         instructions.add(getLabelNode(label));
     }

     @Override
     public void visitLdcInsn(final Object cst) {
         instructions.add(new LdcInsnNode(cst));
     }

     @Override
     public void visitIincInsn(final int var, final int increment) {
         instructions.add(new IincInsnNode(var, increment));
     }

     @Override
     public void visitTableSwitchInsn(final int min, final int max,
             final Label dflt, final Label... labels) {
         instructions.add(new TableSwitchInsnNode(min, max, getLabelNode(dflt),
                 getLabelNodes(labels)));
     }

     @Override
     public void visitLookupSwitchInsn(final Label dflt, final int[] keys,
             final Label[] labels) {
         instructions.add(new LookupSwitchInsnNode(getLabelNode(dflt), keys,
                 getLabelNodes(labels)));
     }

     @Override
     public void visitMultiANewArrayInsn(final String desc, final int dims) {
         instructions.add(new MultiANewArrayInsnNode(desc, dims));
     }

     @Override
     public void visitTryCatchBlock(final Label start, final Label end,
             final Label handler, final String type) {
         tryCatchBlocks.add(new TryCatchBlockNode(getLabelNode(start),
                 getLabelNode(end), getLabelNode(handler), type));
     }

     @Override
     public void visitLocalVariable(final String name, final String desc,
             final String signature, final Label start, final Label end,
             final int index) {
         localVariables.add(new LocalVariableNode(name, desc, signature,
                 getLabelNode(start), getLabelNode(end), index));
     }

     @Override
     public void visitLineNumber(final int line, final Label start) {
         instructions.add(new LineNumberNode(line, getLabelNode(start)));
     }

     @Override
     public void visitMaxs(final int maxStack, final int maxLocals) {
         this.maxStack = maxStack;
         this.maxLocals = maxLocals;
     }

     @Override
     public void visitEnd() {
     }

     /**
      * Returns the LabelNode corresponding to the given Label. Creates a new
      * LabelNode if necessary. The default implementation of this method uses
      * the {@link Label#info} field to store associations between labels and
      * label nodes.
      *
      * @param l
      *            a Label.
      * @return the LabelNode corresponding to l.
      */
     protected LabelNode getLabelNode(final Label l) {
         if (!(l.info instanceof LabelNode)) {
             l.info = new LabelNode();
         }
         return (LabelNode) l.info;
     }

     private LabelNode[] getLabelNodes(final Label[] l) {
         LabelNode[] nodes = new LabelNode[l.length];
         for (int i = 0; i < l.length; ++i) {
             nodes[i] = getLabelNode(l[i]);
         }
         return nodes;
     }

     private Object[] getLabelNodes(final Object[] objs) {
         Object[] nodes = new Object[objs.length];
         for (int i = 0; i < objs.length; ++i) {
             Object o = objs[i];
             if (o instanceof Label) {
                 o = getLabelNode((Label) o);
             }
             nodes[i] = o;
         }
         return nodes;
     }

     // ------------------------------------------------------------------------
     // Accept method
     // ------------------------------------------------------------------------

     /**
      * Checks that this method node is compatible with the given ASM API
      * version. This methods checks that this node, and all its nodes
      * recursively, do not contain elements that were introduced in more recent
      * versions of the ASM API than the given version.
      *
      * @param api
      *            an ASM API version. Must be one of {@link Opcodes#ASM4}.
      */
     public void check(final int api) {
         // nothing to do
     }

     /**
      * Makes the given class visitor visit this method.
      *
      * @param cv
      *            a class visitor.
      */
     public void accept(final ClassVisitor cv) {
         String[] exceptions = new String[this.exceptions.size()];
         this.exceptions.toArray(exceptions);
         MethodVisitor mv = cv.visitMethod(access, name, desc, signature,
                 exceptions);
         if (mv != null) {
             accept(mv);
         }
     }

     /**
      * Makes the given method visitor visit this method.
      *
      * @param mv
      *            a method visitor.
      */
     public void accept(final MethodVisitor mv) {
         // visits the method attributes
         int i, j, n;
         if (annotationDefault != null) {
             AnnotationVisitor av = mv.visitAnnotationDefault();
             AnnotationNode.accept(av, null, annotationDefault);
             if (av != null) {
                 av.visitEnd();
             }
         }
         n = visibleAnnotations == null ? 0 : visibleAnnotations.size();
         for (i = 0; i < n; ++i) {
             AnnotationNode an = visibleAnnotations.get(i);
             an.accept(mv.visitAnnotation(an.desc, true));
         }
         n = invisibleAnnotations == null ? 0 : invisibleAnnotations.size();
         for (i = 0; i < n; ++i) {
             AnnotationNode an = invisibleAnnotations.get(i);
             an.accept(mv.visitAnnotation(an.desc, false));
         }
         n = visibleParameterAnnotations == null ? 0
                 : visibleParameterAnnotations.length;
         for (i = 0; i < n; ++i) {
             List<?> l = visibleParameterAnnotations[i];
             if (l == null) {
                 continue;
             }
             for (j = 0; j < l.size(); ++j) {
                 AnnotationNode an = (AnnotationNode) l.get(j);
                 an.accept(mv.visitParameterAnnotation(i, an.desc, true));
             }
         }
         n = invisibleParameterAnnotations == null ? 0
                 : invisibleParameterAnnotations.length;
         for (i = 0; i < n; ++i) {
             List<?> l = invisibleParameterAnnotations[i];
             if (l == null) {
                 continue;
             }
             for (j = 0; j < l.size(); ++j) {
                 AnnotationNode an = (AnnotationNode) l.get(j);
                 an.accept(mv.visitParameterAnnotation(i, an.desc, false));
             }
         }
         if (visited) {
             instructions.resetLabels();
         }
         n = attrs == null ? 0 : attrs.size();
         for (i = 0; i < n; ++i) {
             mv.visitAttribute(attrs.get(i));
         }
         // visits the method's code
         if (instructions.size() > 0) {
             mv.visitCode();
             // visits try catch blocks
             n = tryCatchBlocks == null ? 0 : tryCatchBlocks.size();
             for (i = 0; i < n; ++i) {
                 tryCatchBlocks.get(i).accept(mv);
             }
             // visits instructions
             instructions.accept(mv);
             // visits local variables
             n = localVariables == null ? 0 : localVariables.size();
             for (i = 0; i < n; ++i) {
                 localVariables.get(i).accept(mv);
             }
             // visits maxs
             mv.visitMaxs(maxStack, maxLocals);
             visited = true;
         }
         mv.visitEnd();
     }
 }
	/***
	* ASM: a very small and fast Java bytecode manipulation framework
	* Copyright (c) 2000-2011 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.tree;

	import java.util.ArrayList;
	import java.util.Arrays;
	import java.util.List;

	import org.objectweb.asm.AnnotationVisitor;
	import org.objectweb.asm.Attribute;
	import org.objectweb.asm.ClassVisitor;
	import org.objectweb.asm.Handle;
	import org.objectweb.asm.Label;
	import org.objectweb.asm.MethodVisitor;
	import org.objectweb.asm.Opcodes;
	import org.objectweb.asm.Type;

	/**
	* A node that represents a method.
	*
	* @author Eric Bruneton
	*/
	public class MethodNode extends MethodVisitor {

	/**
	* The method's access flags (see {@link Opcodes}). This field also
	* indicates if the method is synthetic and/or deprecated.
	*/
	public int access;

	/**
	* The method's name.
	*/
	public String name;

	/**
	* The method's descriptor (see {@link Type}).
	*/
	public String desc;

	/**
	* The method's signature. May be <tt>null</tt>.
	*/
	public String signature;

	/**
	* The internal names of the method's exception classes (see
	* {@link Type#getInternalName() getInternalName}). This list is a list of
	* {@link String} objects.
	*/
	public List<String> exceptions;

	/**
	* The runtime visible annotations of this method. This list is a list of
	* {@link AnnotationNode} objects. May be <tt>null</tt>.
	*
	* @associates org.objectweb.asm.tree.AnnotationNode
	* @label visible
	*/
	public List<AnnotationNode> visibleAnnotations;

	/**
	* The runtime invisible annotations of this method. This list is a list of
	* {@link AnnotationNode} objects. May be <tt>null</tt>.
	*
	* @associates org.objectweb.asm.tree.AnnotationNode
	* @label invisible
	*/
	public List<AnnotationNode> invisibleAnnotations;

	/**
	* The non standard attributes of this method. This list is a list of
	* {@link Attribute} objects. May be <tt>null</tt>.
	*
	* @associates org.objectweb.asm.Attribute
	*/
	public List<Attribute> attrs;

	/**
	* The default value of this annotation interface method. This field must be
	* a {@link Byte}, {@link Boolean}, {@link Character}, {@link Short},
	* {@link Integer}, {@link Long}, {@link Float}, {@link Double},
	* {@link String} or {@link Type}, or an two elements String array (for
	* enumeration values), a {@link AnnotationNode}, or a {@link List} of
	* values of one of the preceding types. May be <tt>null</tt>.
	*/
	public Object annotationDefault;

	/**
	* The runtime visible parameter annotations of this method. These lists are
	* lists of {@link AnnotationNode} objects. May be <tt>null</tt>.
	*
	* @associates org.objectweb.asm.tree.AnnotationNode
	* @label invisible parameters
	*/
	public List<AnnotationNode>[] visibleParameterAnnotations;

	/**
	* The runtime invisible parameter annotations of this method. These lists
	* are lists of {@link AnnotationNode} objects. May be <tt>null</tt>.
	*
	* @associates org.objectweb.asm.tree.AnnotationNode
	* @label visible parameters
	*/
	public List<AnnotationNode>[] invisibleParameterAnnotations;

	/**
	* The instructions of this method. This list is a list of
	* {@link AbstractInsnNode} objects.
	*
	* @associates org.objectweb.asm.tree.AbstractInsnNode
	* @label instructions
	*/
	public InsnList instructions;

	/**
	* The try catch blocks of this method. This list is a list of
	* {@link TryCatchBlockNode} objects.
	*
	* @associates org.objectweb.asm.tree.TryCatchBlockNode
	*/
	public List<TryCatchBlockNode> tryCatchBlocks;

	/**
	* The maximum stack size of this method.
	*/
	public int maxStack;

	/**
	* The maximum number of local variables of this method.
	*/
	public int maxLocals;

	/**
	* The local variables of this method. This list is a list of
	* {@link LocalVariableNode} objects. May be <tt>null</tt>
	*
	* @associates org.objectweb.asm.tree.LocalVariableNode
	*/
	public List<LocalVariableNode> localVariables;

	/**
	* If the accept method has been called on this object.
	*/
	private boolean visited;

	/**
	* Constructs an uninitialized {@link MethodNode}. <i>Subclasses must not
	* use this constructor</i>. Instead, they must use the
	* {@link #MethodNode(int)} version.
	*/
	public MethodNode() {
	this(Opcodes.ASM4);
	}

	/**
	* Constructs an uninitialized {@link MethodNode}.
	*
	* @param api
	* the ASM API version implemented by this visitor. Must be one
	* of {@link Opcodes#ASM4}.
	*/
	public MethodNode(final int api) {
	super(api);
	this.instructions = new InsnList();
	}

	/**
	* Constructs a new {@link MethodNode}. <i>Subclasses must not use this
	* constructor</i>. Instead, they must use the
	* {@link #MethodNode(int, int, String, String, String, String[])} version.
	*
	* @param access
	* the method's access flags (see {@link Opcodes}). This
	* parameter also indicates if the method is synthetic and/or
	* deprecated.
	* @param name
	* the method's name.
	* @param desc
	* the method's descriptor (see {@link Type}).
	* @param signature
	* the method's signature. May be <tt>null</tt>.
	* @param exceptions
	* the internal names of the method's exception classes (see
	* {@link Type#getInternalName() getInternalName}). May be
	* <tt>null</tt>.
	*/
	public MethodNode(final int access, final String name, final String desc,
	final String signature, final String[] exceptions) {
	this(Opcodes.ASM4, access, name, desc, signature, exceptions);
	}

	/**
	* Constructs a new {@link MethodNode}.
	*
	* @param api
	* the ASM API version implemented by this visitor. Must be one
	* of {@link Opcodes#ASM4}.
	* @param access
	* the method's access flags (see {@link Opcodes}). This
	* parameter also indicates if the method is synthetic and/or
	* deprecated.
	* @param name
	* the method's name.
	* @param desc
	* the method's descriptor (see {@link Type}).
	* @param signature
	* the method's signature. May be <tt>null</tt>.
	* @param exceptions
	* the internal names of the method's exception classes (see
	* {@link Type#getInternalName() getInternalName}). May be
	* <tt>null</tt>.
	*/
	public MethodNode(final int api, final int access, final String name,
	final String desc, final String signature, final String[] exceptions) {
	super(api);
	this.access = access;
	this.name = name;
	this.desc = desc;
	this.signature = signature;
	this.exceptions = new ArrayList<String>(exceptions == null ? 0
	: exceptions.length);
	boolean isAbstract = (access & Opcodes.ACC_ABSTRACT) != 0;
	if (!isAbstract) {
	this.localVariables = new ArrayList<LocalVariableNode>(5);
	}
	this.tryCatchBlocks = new ArrayList<TryCatchBlockNode>();
	if (exceptions != null) {
	this.exceptions.addAll(Arrays.asList(exceptions));
	}
	this.instructions = new InsnList();
	}

	// ------------------------------------------------------------------------
	// Implementation of the MethodVisitor abstract class
	// ------------------------------------------------------------------------

	@Override
	public AnnotationVisitor visitAnnotationDefault() {
	return new AnnotationNode(new ArrayList<Object>(0) {
	@Override
	public boolean add(final Object o) {
	annotationDefault = o;
	return super.add(o);
	}
	});
	}

	@Override
	public AnnotationVisitor visitAnnotation(final String desc,
	final boolean visible) {
	AnnotationNode an = new AnnotationNode(desc);
	if (visible) {
	if (visibleAnnotations == null) {
	visibleAnnotations = new ArrayList<AnnotationNode>(1);
	}
	visibleAnnotations.add(an);
	} else {
	if (invisibleAnnotations == null) {
	invisibleAnnotations = new ArrayList<AnnotationNode>(1);
	}
	invisibleAnnotations.add(an);
	}
	return an;
	}

	@Override
	public AnnotationVisitor visitParameterAnnotation(final int parameter,
	final String desc, final boolean visible) {
	AnnotationNode an = new AnnotationNode(desc);
	if (visible) {
	if (visibleParameterAnnotations == null) {
	int params = Type.getArgumentTypes(this.desc).length;
	visibleParameterAnnotations = (List<AnnotationNode>[]) new List<?>[params];
	}
	if (visibleParameterAnnotations[parameter] == null) {
	visibleParameterAnnotations[parameter] = new ArrayList<AnnotationNode>(
	1);
	}
	visibleParameterAnnotations[parameter].add(an);
	} else {
	if (invisibleParameterAnnotations == null) {
	int params = Type.getArgumentTypes(this.desc).length;
	invisibleParameterAnnotations = (List<AnnotationNode>[]) new List<?>[params];
	}
	if (invisibleParameterAnnotations[parameter] == null) {
	invisibleParameterAnnotations[parameter] = new ArrayList<AnnotationNode>(
	1);
	}
	invisibleParameterAnnotations[parameter].add(an);
	}
	return an;
	}

	@Override
	public void visitAttribute(final Attribute attr) {
	if (attrs == null) {
	attrs = new ArrayList<Attribute>(1);
	}
	attrs.add(attr);
	}

	@Override
	public void visitCode() {
	}

	@Override
	public void visitFrame(final int type, final int nLocal,
	final Object[] local, final int nStack, final Object[] stack) {
	instructions.add(new FrameNode(type, nLocal, local == null ? null
	: getLabelNodes(local), nStack, stack == null ? null
	: getLabelNodes(stack)));
	}

	@Override
	public void visitInsn(final int opcode) {
	instructions.add(new InsnNode(opcode));
	}

	@Override
	public void visitIntInsn(final int opcode, final int operand) {
	instructions.add(new IntInsnNode(opcode, operand));
	}

	@Override
	public void visitVarInsn(final int opcode, final int var) {
	instructions.add(new VarInsnNode(opcode, var));
	}

	@Override
	public void visitTypeInsn(final int opcode, final String type) {
	instructions.add(new TypeInsnNode(opcode, type));
	}

	@Override
	public void visitFieldInsn(final int opcode, final String owner,
	final String name, final String desc) {
	instructions.add(new FieldInsnNode(opcode, owner, name, desc));
	}

	@Override
	public void visitMethodInsn(final int opcode, final String owner,
	final String name, final String desc) {
	instructions.add(new MethodInsnNode(opcode, owner, name, desc));
	}

	@Override
	public void visitInvokeDynamicInsn(String name, String desc, Handle bsm,
	Object... bsmArgs) {
	instructions.add(new InvokeDynamicInsnNode(name, desc, bsm, bsmArgs));
	}

	@Override
	public void visitJumpInsn(final int opcode, final Label label) {
	instructions.add(new JumpInsnNode(opcode, getLabelNode(label)));
	}

	@Override
	public void visitLabel(final Label label) {
	instructions.add(getLabelNode(label));
	}

	@Override
	public void visitLdcInsn(final Object cst) {
	instructions.add(new LdcInsnNode(cst));
	}

	@Override
	public void visitIincInsn(final int var, final int increment) {
	instructions.add(new IincInsnNode(var, increment));
	}

	@Override
	public void visitTableSwitchInsn(final int min, final int max,
	final Label dflt, final Label... labels) {
	instructions.add(new TableSwitchInsnNode(min, max, getLabelNode(dflt),
	getLabelNodes(labels)));
	}

	@Override
	public void visitLookupSwitchInsn(final Label dflt, final int[] keys,
	final Label[] labels) {
	instructions.add(new LookupSwitchInsnNode(getLabelNode(dflt), keys,
	getLabelNodes(labels)));
	}

	@Override
	public void visitMultiANewArrayInsn(final String desc, final int dims) {
	instructions.add(new MultiANewArrayInsnNode(desc, dims));
	}

	@Override
	public void visitTryCatchBlock(final Label start, final Label end,
	final Label handler, final String type) {
	tryCatchBlocks.add(new TryCatchBlockNode(getLabelNode(start),
	getLabelNode(end), getLabelNode(handler), type));
	}

	@Override
	public void visitLocalVariable(final String name, final String desc,
	final String signature, final Label start, final Label end,
	final int index) {
	localVariables.add(new LocalVariableNode(name, desc, signature,
	getLabelNode(start), getLabelNode(end), index));
	}

	@Override
	public void visitLineNumber(final int line, final Label start) {
	instructions.add(new LineNumberNode(line, getLabelNode(start)));
	}

	@Override
	public void visitMaxs(final int maxStack, final int maxLocals) {
	this.maxStack = maxStack;
	this.maxLocals = maxLocals;
	}

	@Override
	public void visitEnd() {
	}

	/**
	* Returns the LabelNode corresponding to the given Label. Creates a new
	* LabelNode if necessary. The default implementation of this method uses
	* the {@link Label#info} field to store associations between labels and
	* label nodes.
	*
	* @param l
	* a Label.
	* @return the LabelNode corresponding to l.
	*/
	protected LabelNode getLabelNode(final Label l) {
	if (!(l.info instanceof LabelNode)) {
	l.info = new LabelNode();
	}
	return (LabelNode) l.info;
	}

	private LabelNode[] getLabelNodes(final Label[] l) {
	LabelNode[] nodes = new LabelNode[l.length];
	for (int i = 0; i < l.length; ++i) {
	nodes[i] = getLabelNode(l[i]);
	}
	return nodes;
	}

	private Object[] getLabelNodes(final Object[] objs) {
	Object[] nodes = new Object[objs.length];
	for (int i = 0; i < objs.length; ++i) {
	Object o = objs[i];
	if (o instanceof Label) {
	o = getLabelNode((Label) o);
	}
	nodes[i] = o;
	}
	return nodes;
	}

	// ------------------------------------------------------------------------
	// Accept method
	// ------------------------------------------------------------------------

	/**
	* Checks that this method node is compatible with the given ASM API
	* version. This methods checks that this node, and all its nodes
	* recursively, do not contain elements that were introduced in more recent
	* versions of the ASM API than the given version.
	*
	* @param api
	* an ASM API version. Must be one of {@link Opcodes#ASM4}.
	*/
	public void check(final int api) {
	// nothing to do
	}

	/**
	* Makes the given class visitor visit this method.
	*
	* @param cv
	* a class visitor.
	*/
	public void accept(final ClassVisitor cv) {
	String[] exceptions = new String[this.exceptions.size()];
	this.exceptions.toArray(exceptions);
	MethodVisitor mv = cv.visitMethod(access, name, desc, signature,
	exceptions);
	if (mv != null) {
	accept(mv);
	}
	}

	/**
	* Makes the given method visitor visit this method.
	*
	* @param mv
	* a method visitor.
	*/
	public void accept(final MethodVisitor mv) {
	// visits the method attributes
	int i, j, n;
	if (annotationDefault != null) {
	AnnotationVisitor av = mv.visitAnnotationDefault();
	AnnotationNode.accept(av, null, annotationDefault);
	if (av != null) {
	av.visitEnd();
	}
	}
	n = visibleAnnotations == null ? 0 : visibleAnnotations.size();
	for (i = 0; i < n; ++i) {
	AnnotationNode an = visibleAnnotations.get(i);
	an.accept(mv.visitAnnotation(an.desc, true));
	}
	n = invisibleAnnotations == null ? 0 : invisibleAnnotations.size();
	for (i = 0; i < n; ++i) {
	AnnotationNode an = invisibleAnnotations.get(i);
	an.accept(mv.visitAnnotation(an.desc, false));
	}
	n = visibleParameterAnnotations == null ? 0
	: visibleParameterAnnotations.length;
	for (i = 0; i < n; ++i) {
	List<?> l = visibleParameterAnnotations[i];
	if (l == null) {
	continue;
	}
	for (j = 0; j < l.size(); ++j) {
	AnnotationNode an = (AnnotationNode) l.get(j);
	an.accept(mv.visitParameterAnnotation(i, an.desc, true));
	}
	}
	n = invisibleParameterAnnotations == null ? 0
	: invisibleParameterAnnotations.length;
	for (i = 0; i < n; ++i) {
	List<?> l = invisibleParameterAnnotations[i];
	if (l == null) {
	continue;
	}
	for (j = 0; j < l.size(); ++j) {
	AnnotationNode an = (AnnotationNode) l.get(j);
	an.accept(mv.visitParameterAnnotation(i, an.desc, false));
	}
	}
	if (visited) {
	instructions.resetLabels();
	}
	n = attrs == null ? 0 : attrs.size();
	for (i = 0; i < n; ++i) {
	mv.visitAttribute(attrs.get(i));
	}
	// visits the method's code
	if (instructions.size() > 0) {
	mv.visitCode();
	// visits try catch blocks
	n = tryCatchBlocks == null ? 0 : tryCatchBlocks.size();
	for (i = 0; i < n; ++i) {
	tryCatchBlocks.get(i).accept(mv);
	}
	// visits instructions
	instructions.accept(mv);
	// visits local variables
	n = localVariables == null ? 0 : localVariables.size();
	for (i = 0; i < n; ++i) {
	localVariables.get(i).accept(mv);
	}
	// visits maxs
	mv.visitMaxs(maxStack, maxLocals);
	visited = true;
	}
	mv.visitEnd();
	}
	}