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/*
 * This file is available under and governed by the GNU General Public
 * License version 2 only, as published by the Free Software Foundation.
 * However, the following notice accompanied the original version of this
 * file:
 *
 * 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
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 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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 * 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 jdk.internal.org.objectweb.asm;


A visitor to visit a Java module. The methods of this class must be called in the following order: ( visitMainClass | ( visitPackage | visitRequire | 
visitExport | visitOpen | visitUse | visitProvide )* ) visitEnd. 
Author:Remi Forax, Eric Bruneton
/**
 * A visitor to visit a Java module. The methods of this class must be called in the following
 * order: ( {@code visitMainClass} | ( {@code visitPackage} | {@code visitRequire} | {@code
 * visitExport} | {@code visitOpen} | {@code visitUse} | {@code visitProvide} )* ) {@code visitEnd}.
 *
 * @author Remi Forax
 * @author Eric Bruneton
 */
public abstract class ModuleVisitor {
    
The ASM API version implemented by this visitor. The value of this field must be one of Opcodes.ASM6 or Opcodes.ASM7. 
/**
      * The ASM API version implemented by this visitor. The value of this field must be one of {@link
      * Opcodes#ASM6} or {@link Opcodes#ASM7}.
      */
    protected final int api;

    
The module visitor to which this visitor must delegate method calls. May be null. 
/** The module visitor to which this visitor must delegate method calls. May be null. */
    protected ModuleVisitor mv;

    
Constructs a new ModuleVisitor. 
Params:
/**
      * Constructs a new {@link ModuleVisitor}.
      *
      * @param api the ASM API version implemented by this visitor. Must be one of {@link Opcodes#ASM6}
      *     or {@link Opcodes#ASM7}.
      */
    public ModuleVisitor(final int api) {
        this(api, null);
    }

    
Constructs a new ModuleVisitor. 
Params:
  • api – the ASM API version implemented by this visitor. Must be one of Opcodes.ASM6 or Opcodes.ASM7.
  • moduleVisitor – the module visitor to which this visitor must delegate method calls. May
    be null.
/**
      * Constructs a new {@link ModuleVisitor}.
      *
      * @param api the ASM API version implemented by this visitor. Must be one of {@link Opcodes#ASM6}
      *     or {@link Opcodes#ASM7}.
      * @param moduleVisitor the module visitor to which this visitor must delegate method calls. May
      *     be null.
      */
    public ModuleVisitor(final int api, final ModuleVisitor moduleVisitor) {
        if (api != Opcodes.ASM6 && api != Opcodes.ASM7) {
            throw new IllegalArgumentException();
        }
        this.api = api;
        this.mv = moduleVisitor;
    }

    
Visit the main class of the current module.

Params:
  • mainClass – the internal name of the main class of the current module.
/**
      * Visit the main class of the current module.
      *
      * @param mainClass the internal name of the main class of the current module.
      */
    public void visitMainClass(final String mainClass) {
        if (mv != null) {
            mv.visitMainClass(mainClass);
        }
    }

    
Visit a package of the current module.

Params:
  • packaze – the internal name of a package.
/**
      * Visit a package of the current module.
      *
      * @param packaze the internal name of a package.
      */
    public void visitPackage(final String packaze) {
        if (mv != null) {
            mv.visitPackage(packaze);
        }
    }

    
Visits a dependence of the current module.

Params:
  • module – the fully qualified name (using dots) of the dependence.
  • access – the access flag of the dependence among ACC_TRANSITIVE, 
    ACC_STATIC_PHASE, ACC_SYNTHETIC and ACC_MANDATED.
  • version – the module version at compile time, or null.
/**
      * Visits a dependence of the current module.
      *
      * @param module the fully qualified name (using dots) of the dependence.
      * @param access the access flag of the dependence among {@code ACC_TRANSITIVE}, {@code
      *     ACC_STATIC_PHASE}, {@code ACC_SYNTHETIC} and {@code ACC_MANDATED}.
      * @param version the module version at compile time, or {@literal null}.
      */
    public void visitRequire(final String module, final int access, final String version) {
        if (mv != null) {
            mv.visitRequire(module, access, version);
        }
    }

    
Visit an exported package of the current module.

Params:
  • packaze – the internal name of the exported package.
  • access – the access flag of the exported package, valid values are among 
    ACC_SYNTHETIC and ACC_MANDATED.
  • modules – the fully qualified names (using dots) of the modules that can access the public classes of the exported package, or null.
/**
      * Visit an exported package of the current module.
      *
      * @param packaze the internal name of the exported package.
      * @param access the access flag of the exported package, valid values are among {@code
      *     ACC_SYNTHETIC} and {@code ACC_MANDATED}.
      * @param modules the fully qualified names (using dots) of the modules that can access the public
      *     classes of the exported package, or {@literal null}.
      */
    public void visitExport(final String packaze, final int access, final String... modules) {
        if (mv != null) {
            mv.visitExport(packaze, access, modules);
        }
    }

    
Visit an open package of the current module.

Params:
  • packaze – the internal name of the opened package.
  • access – the access flag of the opened package, valid values are among 
    ACC_SYNTHETIC and ACC_MANDATED.
  • modules – the fully qualified names (using dots) of the modules that can use deep reflection to the classes of the open package, or null.
/**
      * Visit an open package of the current module.
      *
      * @param packaze the internal name of the opened package.
      * @param access the access flag of the opened package, valid values are among {@code
      *     ACC_SYNTHETIC} and {@code ACC_MANDATED}.
      * @param modules the fully qualified names (using dots) of the modules that can use deep
      *     reflection to the classes of the open package, or {@literal null}.
      */
    public void visitOpen(final String packaze, final int access, final String... modules) {
        if (mv != null) {
            mv.visitOpen(packaze, access, modules);
        }
    }

    
Visit a service used by the current module. The name must be the internal name of an interface
or a class.

Params:
  • service – the internal name of the service.
/**
      * Visit a service used by the current module. The name must be the internal name of an interface
      * or a class.
      *
      * @param service the internal name of the service.
      */
    public void visitUse(final String service) {
        if (mv != null) {
            mv.visitUse(service);
        }
    }

    
Visit an implementation of a service.

Params:
  • service – the internal name of the service.
  • providers – the internal names of the implementations of the service (there is at least
    one provider).
/**
      * Visit an implementation of a service.
      *
      * @param service the internal name of the service.
      * @param providers the internal names of the implementations of the service (there is at least
      *     one provider).
      */
    public void visitProvide(final String service, final String... providers) {
        if (mv != null) {
            mv.visitProvide(service, providers);
        }
    }

    
Visits the end of the module. This method, which is the last one to be called, is used to
inform the visitor that everything have been visited.

/**
      * Visits the end of the module. This method, which is the last one to be called, is used to
      * inform the visitor that everything have been visited.
      */
    public void visitEnd() {
        if (mv != null) {
            mv.visitEnd();
        }
    }
}