antlr-3.4/tool/src/main/java/org/antlr/tool/GrammarInsufficientPredicatesMessage.java

/*
 * [The "BSD license"]
 *  Copyright (c) 2010 Terence Parr
 *  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. The name of the author may not be used to endorse or promote products
 *      derived from this software without specific prior written permission.
 *
 *  THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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.
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 *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 *  NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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package org.antlr.tool;

import org.antlr.analysis.DFAState;
import org.antlr.analysis.DecisionProbe;
import org.antlr.analysis.Label;
import org.antlr.runtime.Token;
import org.stringtemplate.v4.ST;

import java.util.*;

public class GrammarInsufficientPredicatesMessage extends Message {
	public DecisionProbe probe;
    public Map<Integer, Set<Token>> altToLocations;
	public DFAState problemState;

	public GrammarInsufficientPredicatesMessage(DecisionProbe probe,
												DFAState problemState,
												Map<Integer, Set<Token>> altToLocations)
	{
		super(ErrorManager.MSG_INSUFFICIENT_PREDICATES);
		this.probe = probe;
		this.problemState = problemState;
		this.altToLocations = altToLocations;
	}

	public String toString() {
		GrammarAST decisionASTNode = probe.dfa.getDecisionASTNode();
		line = decisionASTNode.getLine();
		column = decisionASTNode.getCharPositionInLine();
		String fileName = probe.dfa.nfa.grammar.getFileName();
		if ( fileName!=null ) {
			file = fileName;
		}
		ST st = getMessageTemplate();
		// convert to string key to avoid 3.1 ST bug
		Map<String, Set<Token>> altToLocationsWithStringKey = new LinkedHashMap<String, Set<Token>>();
		List<Integer> alts = new ArrayList<Integer>();
		alts.addAll(altToLocations.keySet());
		Collections.sort(alts);
		for (Integer altI : alts) {
			altToLocationsWithStringKey.put(altI.toString(), altToLocations.get(altI));
			/*
			List<String> tokens = new ArrayList<String>();
			for (Token t : altToLocations.get(altI)) {
				tokens.add(t.toString());
			}
			Collections.sort(tokens);
			System.out.println("tokens=\n"+tokens);
			*/
		}
		st.add("altToLocations", altToLocationsWithStringKey);

		List<Label> sampleInputLabels = problemState.dfa.probe.getSampleNonDeterministicInputSequence(problemState);
		String input = problemState.dfa.probe.getInputSequenceDisplay(sampleInputLabels);
		st.add("upon", input);

		st.add("hasPredicateBlockedByAction", problemState.dfa.hasPredicateBlockedByAction);

		return super.toString(st);
	}

}