Package nginx.clojure.asm.util

Source Code of nginx.clojure.asm.util.TraceFieldVisitor

/***
* 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 nginx.clojure.asm.util;

import nginx.clojure.asm.AnnotationVisitor;
import nginx.clojure.asm.Attribute;
import nginx.clojure.asm.FieldVisitor;
import nginx.clojure.asm.Opcodes;

/**
* A {@link FieldVisitor} that prints the fields it visits with a
* {@link Printer}.
*
* @author Eric Bruneton
*/
public final class TraceFieldVisitor extends FieldVisitor {

    public final Printer p;

    public TraceFieldVisitor(final Printer p) {
        this(null, p);
    }

    public TraceFieldVisitor(final FieldVisitor fv, final Printer p) {
        super(Opcodes.ASM4, fv);
        this.p = p;
    }

    @Override
    public AnnotationVisitor visitAnnotation(final String desc,
            final boolean visible) {
        Printer p = this.p.visitFieldAnnotation(desc, visible);
        AnnotationVisitor av = fv == null ? null : fv.visitAnnotation(desc,
                visible);
        return new TraceAnnotationVisitor(av, p);
    }

    @Override
    public void visitAttribute(final Attribute attr) {
        p.visitFieldAttribute(attr);
        super.visitAttribute(attr);
    }

    @Override
    public void visitEnd() {
        p.visitFieldEnd();
        super.visitEnd();
    }
}
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