xbird.xquery.compile.MethodGenerator.java Source code

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Here is the source code for xbird.xquery.compile.MethodGenerator.java

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/*
 * @(#)$Id$
 *
 * Copyright 2006-2008 Makoto YUI
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * 
 * Contributors:
 *     Makoto YUI - initial implementation
 */
package xbird.xquery.compile;

import java.util.IdentityHashMap;

import xbird.util.collections.IndexedSet;
import org.objectweb.asm.*;

/**
 * 
 * <DIV lang="en"></DIV>
 * <DIV lang="ja"></DIV>
 * 
 * @author Makoto YUI (yuin405+xbird@gmail.com)
 */
public final class MethodGenerator implements MethodVisitor {

    private final MethodVisitor mv;
    private final IndexedSet<Object> objectCodes;

    public MethodGenerator(MethodVisitor mv) {
        this.mv = mv;
        this.objectCodes = new IndexedSet<Object>(new IdentityHashMap<Object, Integer>(128));
    }

    public int defineLocal(Object obj, Label start, Label end) {
        int slot = objectCodes.indexOf(obj);
        if (slot != -1) {
            return slot + 1;
        }
        slot = objectCodes.addIndexOf(obj) + 1;
        visitLocalVariable(String.valueOf(slot), BytecodeHelper.getDescriptor(obj.getClass()), start, end, slot);
        return slot;
    }

    public AnnotationVisitor visitAnnotation(String desc, boolean visible) {
        return mv.visitAnnotation(desc, visible);
    }

    public AnnotationVisitor visitAnnotationDefault() {
        return mv.visitAnnotationDefault();
    }

    public void visitAttribute(Attribute attr) {
        mv.visitAttribute(attr);
    }

    public void visitCode() {
        mv.visitCode();
    }

    public void visitEnd() {
        mv.visitEnd();
    }

    public void visitFieldInsn(int opcode, String owner, String name, String desc) {
        mv.visitFieldInsn(opcode, owner, name, desc);
    }

    public void visitFrame(int type, int nLocal, Object[] local, int nStack, Object[] stack) {
        mv.visitFrame(type, nLocal, local, nStack, stack);
    }

    public void visitIincInsn(int var, int increment) {
        mv.visitIincInsn(var, increment);
    }

    public void visitInsn(int opcode) {
        mv.visitInsn(opcode);
    }

    public void visitIntInsn(int opcode, int operand) {
        mv.visitIntInsn(opcode, operand);
    }

    public void visitJumpInsn(int opcode, Label label) {
        mv.visitJumpInsn(opcode, label);
    }

    public void visitLabel(Label label) {
        mv.visitLabel(label);
    }

    public void visitLdcInsn(Object cst) {
        mv.visitLdcInsn(cst);
    }

    public void visitLineNumber(int line, Label start) {
        mv.visitLineNumber(line, start);
    }

    public void visitLocalVariable(String name, String desc, Label start, Label end, int index) {
        mv.visitLocalVariable(name, desc, null, start, end, index);
    }

    public void visitLocalVariable(String name, String desc, String signature, Label start, Label end, int index) {
        mv.visitLocalVariable(name, desc, signature, start, end, index);
    }

    public void visitLookupSwitchInsn(Label dflt, int[] keys, Label[] labels) {
        mv.visitLookupSwitchInsn(dflt, keys, labels);
    }

    public void visitMaxs(int maxStack, int maxLocals) {
        mv.visitMaxs(maxStack, maxLocals);
    }

    public void visitMethodInsn(int opcode, String owner, String name, String desc) {
        mv.visitMethodInsn(opcode, owner, name, desc);
    }

    public void visitMultiANewArrayInsn(String desc, int dims) {
        mv.visitMultiANewArrayInsn(desc, dims);
    }

    public AnnotationVisitor visitParameterAnnotation(int parameter, String desc, boolean visible) {
        return mv.visitParameterAnnotation(parameter, desc, visible);
    }

    public void visitTableSwitchInsn(int min, int max, Label dflt, Label[] labels) {
        mv.visitTableSwitchInsn(min, max, dflt, labels);
    }

    public void visitTryCatchBlock(Label start, Label end, Label handler, String type) {
        mv.visitTryCatchBlock(start, end, handler, type);
    }

    public void visitTypeInsn(int opcode, String desc) {
        mv.visitTypeInsn(opcode, desc);
    }

    public void visitVarInsn(int opcode, int var) {
        mv.visitVarInsn(opcode, var);
    }

}