Application: gvSIG desktop

package org.gvsig.expressionevaluator;

import org.apache.commons.lang3.StringUtils;

/**

 *

 * @author jjdelcerro

 */

public class ExpressionSyntaxException extends RuntimeException {

    private final int position;

    private final int line;

    private final int column;

    private final String phrase;

    private final String description;

    private final String tip;

    public ExpressionSyntaxException() {

        super("Syntax error in expression.");

        this.phrase = null;

        this.position = -1;

        this.line = -1;

        this.column = -1;

        this.description = I18N.Syntax_error_in_expression();

        this.tip = null;

    }

    public ExpressionSyntaxException(LexicalAnalyzer lexer) {

        this(null, lexer, null);

    }

    public ExpressionSyntaxException(String msg, LexicalAnalyzer lexer) {

        this(msg, lexer, null);

    }

    public ExpressionSyntaxException(String msg, LexicalAnalyzer lexer, String tip) {

        this(msg, lexer.getSource(), lexer.getMaxPosition(), lexer.getMaxLine(), lexer.getMaxColumn(), tip);

    }

    public ExpressionSyntaxException(String phrase, int position) {

        this(null, phrase, position, -1, -1, null);

    }

    public ExpressionSyntaxException(String msg, String phrase, int position, String tip) {

        this(msg, phrase, position, -1, -1, tip);

    }

    public ExpressionSyntaxException(String msg, String phrase, int position, int line, int column, String tip) {

        super("Syntax error in '"+getSource(phrase, position) +"' near character "+ formatPosition(position,line,column) + ". " + StringUtils.trimToEmpty(msg));

        this.phrase = phrase;

        this.position = position;

        this.line = line;

        this.column = column;

        if( StringUtils.isBlank(msg) ) {

            this.description = I18N.Syntax_error_near_character_XPositionX(position);

        } else {

            this.description = I18N.Syntax_error_near_character_XPositionX(position)+ " "+msg;

        }

        this.tip = tip;

    }

    private static String formatPosition(int position, int line, int column) {

        if( line<0 || column<0 ) {

            return String.valueOf(position);

        }

        return position + " ("+line+":"+column+")";

    }

    private static String getSource(String source, int position) {

        String s = StringUtils.left(source, position) + "[*]" + StringUtils.mid(source, position, 200);

        if( s.length()>200 ) {

            s = "..."+StringUtils.mid(s, position-100, 200)+"...";

        }

        return s;

    }

    public String getPhrase() {

        return this.phrase;

    }

    public int getPosition() {

        return this.position;

    }

    public int getLine() {

        return this.line;

    }

    public int getColumn() {

        return this.column;

    }

    public String getDescription() {

        return this.description;

    }

    public String getTip() {

        return this.tip;

    }

}