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/***
* ASM: a very small and fast Java bytecode manipulation framework
* Copyright (c) 2000-2007 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.mockito.asm.tree;
import org.mockito.asm.AnnotationVisitor;
import org.mockito.asm.Attribute;
import org.mockito.asm.ClassVisitor;
import org.mockito.asm.Label;
import org.mockito.asm.MethodVisitor;
import org.mockito.asm.Opcodes;
import org.mockito.asm.Type;
import java.util.List;
import java.util.ArrayList;
import java.util.Arrays;
/**
* A node that represents a method.
*
* @author Eric Bruneton
*/
public class MethodNode extends MemberNode implements 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 null.
*/
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 exceptions;
/**
* 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 null.
*/
public Object annotationDefault;
/**
* The runtime visible parameter annotations of this method. These lists are
* lists of {@link AnnotationNode} objects. May be null.
*
* @associates org.mockito.asm.tree.AnnotationNode
* @label invisible parameters
*/
public List[] visibleParameterAnnotations;
/**
* The runtime invisible parameter annotations of this method. These lists
* are lists of {@link AnnotationNode} objects. May be null.
*
* @associates org.mockito.asm.tree.AnnotationNode
* @label visible parameters
*/
public List[] invisibleParameterAnnotations;
/**
* The instructions of this method. This list is a list of
* {@link AbstractInsnNode} objects.
*
* @associates org.mockito.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.mockito.asm.tree.TryCatchBlockNode
*/
public List 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 null
*
* @associates org.mockito.asm.tree.LocalVariableNode
*/
public List localVariables;
/**
* Constructs an unitialized {@link MethodNode}.
*/
public MethodNode() {
this.instructions = new InsnList();
}
/**
* Constructs a new {@link MethodNode}.
*
* @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 null.
* @param exceptions the internal names of the method's exception classes
* (see {@link Type#getInternalName() getInternalName}). May be
* null.
*/
public MethodNode(
final int access,
final String name,
final String desc,
final String signature,
final String[] exceptions)
{
this();
this.access = access;
this.name = name;
this.desc = desc;
this.signature = signature;
this.exceptions = new ArrayList(exceptions == null
? 0
: exceptions.length);
boolean isAbstract = (access & Opcodes.ACC_ABSTRACT) != 0;
if (!isAbstract) {
this.localVariables = new ArrayList(5);
}
this.tryCatchBlocks = new ArrayList();
if (exceptions != null) {
this.exceptions.addAll(Arrays.asList(exceptions));
}
}
// ------------------------------------------------------------------------
// Implementation of the MethodVisitor interface
// ------------------------------------------------------------------------
public AnnotationVisitor visitAnnotationDefault() {
return new AnnotationNode(new ArrayList(0) {
public boolean add(final Object o) {
annotationDefault = o;
return super.add(o);
}
});
}
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 = new List[params];
}
if (visibleParameterAnnotations[parameter] == null) {
visibleParameterAnnotations[parameter] = new ArrayList(1);
}
visibleParameterAnnotations[parameter].add(an);
} else {
if (invisibleParameterAnnotations == null) {
int params = Type.getArgumentTypes(this.desc).length;
invisibleParameterAnnotations = new List[params];
}
if (invisibleParameterAnnotations[parameter] == null) {
invisibleParameterAnnotations[parameter] = new ArrayList(1);
}
invisibleParameterAnnotations[parameter].add(an);
}
return an;
}
public void visitCode() {
}
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)));
}
public void visitInsn(final int opcode) {
instructions.add(new InsnNode(opcode));
}
public void visitIntInsn(final int opcode, final int operand) {
instructions.add(new IntInsnNode(opcode, operand));
}
public void visitVarInsn(final int opcode, final int var) {
instructions.add(new VarInsnNode(opcode, var));
}
public void visitTypeInsn(final int opcode, final String type) {
instructions.add(new TypeInsnNode(opcode, type));
}
public void visitFieldInsn(
final int opcode,
final String owner,
final String name,
final String desc)
{
instructions.add(new FieldInsnNode(opcode, owner, name, desc));
}
public void visitMethodInsn(
final int opcode,
final String owner,
final String name,
final String desc)
{
instructions.add(new MethodInsnNode(opcode, owner, name, desc));
}
public void visitJumpInsn(final int opcode, final Label label) {
instructions.add(new JumpInsnNode(opcode, getLabelNode(label)));
}
public void visitLabel(final Label label) {
instructions.add(getLabelNode(label));
}
public void visitLdcInsn(final Object cst) {
instructions.add(new LdcInsnNode(cst));
}
public void visitIincInsn(final int var, final int increment) {
instructions.add(new IincInsnNode(var, increment));
}
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)));
}
public void visitLookupSwitchInsn(
final Label dflt,
final int[] keys,
final Label[] labels)
{
instructions.add(new LookupSwitchInsnNode(getLabelNode(dflt),
keys,
getLabelNodes(labels)));
}
public void visitMultiANewArrayInsn(final String desc, final int dims) {
instructions.add(new MultiANewArrayInsnNode(desc, dims));
}
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));
}
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));
}
public void visitLineNumber(final int line, final Label start) {
instructions.add(new LineNumberNode(line, getLabelNode(start)));
}
public void visitMaxs(final int maxStack, final int maxLocals) {
this.maxStack = maxStack;
this.maxLocals = maxLocals;
}
/**
* 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(l);
}
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
// ------------------------------------------------------------------------
/**
* 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 = (AnnotationNode) visibleAnnotations.get(i);
an.accept(mv.visitAnnotation(an.desc, true));
}
n = invisibleAnnotations == null ? 0 : invisibleAnnotations.size();
for (i = 0; i < n; ++i) {
AnnotationNode an = (AnnotationNode) 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));
}
}
n = attrs == null ? 0 : attrs.size();
for (i = 0; i < n; ++i) {
mv.visitAttribute((Attribute) attrs.get(i));
}
// visits the method's code
if (instructions.size() > 0) {
mv.visitCode();
// visits try catch blocks
for (i = 0; i < tryCatchBlocks.size(); ++i) {
((TryCatchBlockNode) 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) {
((LocalVariableNode) localVariables.get(i)).accept(mv);
}
// visits maxs
mv.visitMaxs(maxStack, maxLocals);
}
mv.visitEnd();
}
}
