java/11 : java.base/jdk/internal/org/objectweb/asm/signature/SignatureVisitor.java

SignatureVisitor
https://openjdk.java.net/
GPLv2 + Classpath Exception
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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
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 *    this software without specific prior written permission.
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package jdk.internal.org.objectweb.asm.signature;

import jdk.internal.org.objectweb.asm.Opcodes;

A visitor to visit a generic signature. The methods of this interface must be called in one of the three following orders (the last one is the only valid order for a SignatureVisitor that is returned by a method of this interface): 
ClassSignature = ( visitFormalTypeParameter
visitClassBound? visitInterfaceBound* )* (
visitSuperclass visitInterface* )
MethodSignature = ( visitFormalTypeParameter
visitClassBound? visitInterfaceBound* )* (
visitParameterType* visitReturnType
visitExceptionType* )
TypeSignature = visitBaseType |
visitTypeVariable | visitArrayType | (
visitClassType visitTypeArgument* (
visitInnerClassType visitTypeArgument* )* visitEnd
) )

Author: Thomas Hallgren, Eric Bruneton/**
 * A visitor to visit a generic signature. The methods of this interface must be
 * called in one of the three following orders (the last one is the only valid
 * order for a {@link SignatureVisitor} that is returned by a method of this
 * interface):
 * <ul>
 * <li><i>ClassSignature</i> = ( <tt>visitFormalTypeParameter</tt>
 * <tt>visitClassBound</tt>? <tt>visitInterfaceBound</tt>* )* (
 * <tt>visitSuperclass</tt> <tt>visitInterface</tt>* )</li>
 * <li><i>MethodSignature</i> = ( <tt>visitFormalTypeParameter</tt>
 * <tt>visitClassBound</tt>? <tt>visitInterfaceBound</tt>* )* (
 * <tt>visitParameterType</tt>* <tt>visitReturnType</tt>
 * <tt>visitExceptionType</tt>* )</li>
 * <li><i>TypeSignature</i> = <tt>visitBaseType</tt> |
 * <tt>visitTypeVariable</tt> | <tt>visitArrayType</tt> | (
 * <tt>visitClassType</tt> <tt>visitTypeArgument</tt>* (
 * <tt>visitInnerClassType</tt> <tt>visitTypeArgument</tt>* )* <tt>visitEnd</tt>
 * ) )</li>
 * </ul>
 *
 * @author Thomas Hallgren
 * @author Eric Bruneton
 */
public abstract class SignatureVisitor {

    Wildcard for an "extends" type argument.
/**
     * Wildcard for an "extends" type argument.
     */
    public final static char EXTENDS = '+';

    Wildcard for a "super" type argument.
/**
     * Wildcard for a "super" type argument.
     */
    public final static char SUPER = '-';

    Wildcard for a normal type argument.
/**
     * Wildcard for a normal type argument.
     */
    public final static char INSTANCEOF = '=';

    The ASM API version implemented by this visitor. The value of this field must be one of Opcodes.ASM4, Opcodes.ASM5 or Opcodes.ASM6. /**
     * The ASM API version implemented by this visitor. The value of this field
     * must be one of {@link Opcodes#ASM4}, {@link Opcodes#ASM5} or {@link Opcodes#ASM6}.
     */
    protected final int api;

    Constructs a new SignatureVisitor. 
Params: api –  the ASM API version implemented by this visitor. Must be one of Opcodes.ASM4, Opcodes.ASM5 or Opcodes.ASM6./**
     * Constructs a new {@link SignatureVisitor}.
     *
     * @param api
     *            the ASM API version implemented by this visitor. Must be one
     *            of {@link Opcodes#ASM4}, {@link Opcodes#ASM5} or {@link Opcodes#ASM6}.
     */
    public SignatureVisitor(final int api) {
        if (api < Opcodes.ASM4 || api > Opcodes.ASM6) {
            throw new IllegalArgumentException();
        }
        this.api = api;
    }

    Visits a formal type parameter.
Params: name – 
           the name of the formal parameter./**
     * Visits a formal type parameter.
     *
     * @param name
     *            the name of the formal parameter.
     */
    public void visitFormalTypeParameter(String name) {
    }

    Visits the class bound of the last visited formal type parameter.
Returns: a non null visitor to visit the signature of the class bound./**
     * Visits the class bound of the last visited formal type parameter.
     *
     * @return a non null visitor to visit the signature of the class bound.
     */
    public SignatureVisitor visitClassBound() {
        return this;
    }

    Visits an interface bound of the last visited formal type parameter.
Returns: a non null visitor to visit the signature of the interface bound./**
     * Visits an interface bound of the last visited formal type parameter.
     *
     * @return a non null visitor to visit the signature of the interface bound.
     */
    public SignatureVisitor visitInterfaceBound() {
        return this;
    }

    Visits the type of the super class.
Returns: a non null visitor to visit the signature of the super class
        type./**
     * Visits the type of the super class.
     *
     * @return a non null visitor to visit the signature of the super class
     *         type.
     */
    public SignatureVisitor visitSuperclass() {
        return this;
    }

    Visits the type of an interface implemented by the class.
Returns: a non null visitor to visit the signature of the interface type./**
     * Visits the type of an interface implemented by the class.
     *
     * @return a non null visitor to visit the signature of the interface type.
     */
    public SignatureVisitor visitInterface() {
        return this;
    }

    Visits the type of a method parameter.
Returns: a non null visitor to visit the signature of the parameter type./**
     * Visits the type of a method parameter.
     *
     * @return a non null visitor to visit the signature of the parameter type.
     */
    public SignatureVisitor visitParameterType() {
        return this;
    }

    Visits the return type of the method.
Returns: a non null visitor to visit the signature of the return type./**
     * Visits the return type of the method.
     *
     * @return a non null visitor to visit the signature of the return type.
     */
    public SignatureVisitor visitReturnType() {
        return this;
    }

    Visits the type of a method exception.
Returns: a non null visitor to visit the signature of the exception type./**
     * Visits the type of a method exception.
     *
     * @return a non null visitor to visit the signature of the exception type.
     */
    public SignatureVisitor visitExceptionType() {
        return this;
    }

    Visits a signature corresponding to a primitive type.
Params: descriptor – 
           the descriptor of the primitive type, or 'V' for void
           ./**
     * Visits a signature corresponding to a primitive type.
     *
     * @param descriptor
     *            the descriptor of the primitive type, or 'V' for <tt>void</tt>
     *            .
     */
    public void visitBaseType(char descriptor) {
    }

    Visits a signature corresponding to a type variable.
Params: name – 
           the name of the type variable./**
     * Visits a signature corresponding to a type variable.
     *
     * @param name
     *            the name of the type variable.
     */
    public void visitTypeVariable(String name) {
    }

    Visits a signature corresponding to an array type.
Returns: a non null visitor to visit the signature of the array element
        type./**
     * Visits a signature corresponding to an array type.
     *
     * @return a non null visitor to visit the signature of the array element
     *         type.
     */
    public SignatureVisitor visitArrayType() {
        return this;
    }

    Starts the visit of a signature corresponding to a class or interface
type.
Params: name – 
           the internal name of the class or interface./**
     * Starts the visit of a signature corresponding to a class or interface
     * type.
     *
     * @param name
     *            the internal name of the class or interface.
     */
    public void visitClassType(String name) {
    }

    Visits an inner class.
Params: name – 
           the local name of the inner class in its enclosing class./**
     * Visits an inner class.
     *
     * @param name
     *            the local name of the inner class in its enclosing class.
     */
    public void visitInnerClassType(String name) {
    }

    Visits an unbounded type argument of the last visited class or inner
class type.
/**
     * Visits an unbounded type argument of the last visited class or inner
     * class type.
     */
    public void visitTypeArgument() {
    }

    Visits a type argument of the last visited class or inner class type.
Params: wildcard – 
           '+', '-' or '='.
Returns: a non null visitor to visit the signature of the type argument./**
     * Visits a type argument of the last visited class or inner class type.
     *
     * @param wildcard
     *            '+', '-' or '='.
     * @return a non null visitor to visit the signature of the type argument.
     */
    public SignatureVisitor visitTypeArgument(char wildcard) {
        return this;
    }

    Ends the visit of a signature corresponding to a class or interface type.
/**
     * Ends the visit of a signature corresponding to a class or interface type.
     */
    public void visitEnd() {
    }
}
Params:	wildcard – '+', '-' or '='.
Returns:	a non null visitor to visit the signature of the type argument.
/

java/ 11/ java.base/jdk/internal/org/objectweb/asm/signature/SignatureVisitor.java
