org.glassfish.pfl.dynamic.codegen.impl.CodegenPrinter Maven / Gradle / Ivy

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package org.glassfish.pfl.dynamic.codegen.impl;

import java.io.PrintStream ;
import org.glassfish.pfl.basic.algorithm.Printer;

/** Extends the file utility Printer with line numbers that are
 * also optionally stored as Attributes in Nodes for annotating the AST.
 */
public class CodegenPrinter extends Printer {
    static Attribute lineNumberAttribute = new Attribute( 
	Integer.class, "lineNumber", -1 ) ;

    private int lineNumber ;

    public CodegenPrinter( PrintStream ps ) {
	this( ps, DEFAULT_INCREMENT, ' ' ) ;
    }

    public CodegenPrinter( PrintStream ps, int increment, char padChar ) {
	super( ps, increment, padChar ) ;
	this.lineNumber = 1 ;
    }

    public int lineNumber() {
	return lineNumber ;
    }

    @Override
    public CodegenPrinter p( String str ) {
	super.p( str ) ;
	return this ;
    }

    @Override
    public CodegenPrinter p( Object obj ) {
	super.p( obj ) ;
	return this ;
    }

    @Override
    public CodegenPrinter in() {
	super.in() ;
	return this ;
    }

    @Override
    public CodegenPrinter out() {
	super.out() ;
	return this ;
    }

    @Override
    public CodegenPrinter nl() {
	super.nl() ;
	return this ;
    }

    public CodegenPrinter nl( Node node ) {
	lineNumber++ ;
	if (node != null)
	    lineNumberAttribute.set( node, lineNumber ) ;
	super.nl() ;
	return this ;
    }
}