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ASM: a very small and fast Java bytecode manipulation framework Copyright (c) 2000-2007 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 signature visitor that generates signatures in string format.

Author(s):
Thomas Hallgren
Eric Bruneton
 
 public class SignatureWriter implements SignatureVisitor {

    
Buffer used to construct the signature.
 
     private final StringBuffer buf = new StringBuffer();

    
Indicates if the signature contains formal type parameters.
 
     private boolean hasFormals;

    
Indicates if the signature contains method parameter types.
 
     private boolean hasParameters;

    
Stack used to keep track of class types that have arguments. Each element of this stack is a boolean encoded in one bit. The top of the stack is the lowest order bit. Pushing false = *2, pushing true = *2+1, popping = /2.
 
     private int argumentStack;

    
Constructs a new SignatureWriter object.
 
     public SignatureWriter() {
     }
 
     // ------------------------------------------------------------------------
     // Implementation of the SignatureVisitor interface
     // ------------------------------------------------------------------------
 
     public void visitFormalTypeParameter(final String name) {
         if (!) {
              = true;
             .append('<');
         }
         .append(name);
         .append(':');
     }
 
     public SignatureVisitor visitClassBound() {
         return this;
     }
 
     public SignatureVisitor visitInterfaceBound() {
         .append(':');
         return this;
     }
 
     public SignatureVisitor visitSuperclass() {
         endFormals();
         return this;
     }
 
     public SignatureVisitor visitInterface() {
         return this;
     }
 
        endFormals();
        if (!) {
             = true;
            .append('(');
        }
        return this;
    }
    public SignatureVisitor visitReturnType() {
        endFormals();
        if (!) {
            .append('(');
        }
        .append(')');
        return this;
    }
        .append('^');
        return this;
    }
    public void visitBaseType(final char descriptor) {
        .append(descriptor);
    }
    public void visitTypeVariable(final String name) {
        .append('T');
        .append(name);
        .append(';');
    }
    public SignatureVisitor visitArrayType() {
        .append('[');
        return this;
    }
    public void visitClassType(final String name) {
        .append('L');
        .append(name);
         *= 2;
    }
    public void visitInnerClassType(final String name) {
        endArguments();
        .append('.');
        .append(name);
         *= 2;
    }
    public void visitTypeArgument() {
        if ( % 2 == 0) {
            ++;
            .append('<');
        }
        .append('*');
    }
    public SignatureVisitor visitTypeArgument(final char wildcard) {
        if ( % 2 == 0) {
            ++;
            .append('<');
        }
        if (wildcard != '=') {
            .append(wildcard);
        }
        return this;
    }
    public void visitEnd() {
        endArguments();
        .append(';');
    }

    
Returns the signature that was built by this signature writer.

Returns:
the signature that was built by this signature writer.
    public String toString() {
        return .toString();
    }
    // ------------------------------------------------------------------------
    // Utility methods
    // ------------------------------------------------------------------------

    
Ends the formal type parameters section of the signature.
    private void endFormals() {
        if () {
             = false;
            .append('>');
        }
    }

    
Ends the type arguments of a class or inner class type.
    private void endArguments() {
        if ( % 2 != 0) {
            .append('>');
        }
         /= 2;
    }
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