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/***
* ASM: a very small and fast Java bytecode manipulation framework
* Copyright (c) 2000-2005 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.objectweb.asm.signature;
/**
* 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 interface SignatureVisitor {
/**
* Wildcard for an "extends" type argument.
*/
char EXTENDS = '+';
/**
* Wildcard for a "super" type argument.
*/
char SUPER = '-';
/**
* Wildcard for a normal type argument.
*/
char INSTANCEOF = '=';
/**
* Visits a formal type parameter.
*
* @param name the name of the formal parameter.
*/
void visitFormalTypeParameter(String name);
/**
* Visits the class bound of the last visited formal type parameter.
*
* @return a non null visitor to visit the signature of the class bound.
*/
SignatureVisitor visitClassBound();
/**
* Visits an interface bound of the last visited formal type parameter.
*
* @return a non null visitor to visit the signature of the interface bound.
*/
SignatureVisitor visitInterfaceBound();
/**
* Visits the type of the super class.
*
* @return a non null visitor to visit the signature of the super class
* type.
*/
SignatureVisitor visitSuperclass();
/**
* Visits the type of an interface implemented by the class.
*
* @return a non null visitor to visit the signature of the interface type.
*/
SignatureVisitor visitInterface();
/**
* Visits the type of a method parameter.
*
* @return a non null visitor to visit the signature of the parameter type.
*/
SignatureVisitor visitParameterType();
/**
* Visits the return type of the method.
*
* @return a non null visitor to visit the signature of the return type.
*/
SignatureVisitor visitReturnType();
/**
* Visits the type of a method exception.
*
* @return a non null visitor to visit the signature of the exception type.
*/
SignatureVisitor visitExceptionType();
/**
* Visits a signature corresponding to a primitive type.
*
* @param descriptor the descriptor of the primitive type, or 'V' for
* <tt>void</tt>.
*/
void visitBaseType(char descriptor);
/**
* Visits a signature corresponding to a type variable.
*
* @param name the name of the type variable.
*/
void visitTypeVariable(String name);
/**
* Visits a signature corresponding to an array type.
*
* @return a non null visitor to visit the signature of the array element
* type.
*/
SignatureVisitor visitArrayType();
/**
* Starts the visit of a signature corresponding to a class or interface
* type.
*
* @param name the internal name of the class or interface.
*/
void visitClassType(String name);
/**
* Visits an inner class.
*
* @param name the local name of the inner class in its enclosing class.
*/
void visitInnerClassType(String name);
/**
* Visits an unbounded type argument of the last visited class or inner
* class type.
*/
void visitTypeArgument();
/**
* 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.
*/
SignatureVisitor visitTypeArgument(char wildcard);
/**
* Ends the visit of a signature corresponding to a class or interface type.
*/
void visitEnd();
}
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