Package org.antlr.test

Source Code of org.antlr.test.TestMessages

/*
* [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
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package org.antlr.test;

import org.antlr.Tool;
import org.antlr.codegen.CodeGenerator;
import org.antlr.grammar.v3.ANTLRParser;
import org.antlr.grammar.v3.ActionTranslator;
import org.antlr.runtime.CommonToken;
import org.antlr.tool.ErrorManager;
import org.antlr.tool.Grammar;
import org.antlr.tool.GrammarSemanticsMessage;
import org.junit.Test;

import static org.junit.Assert.*;

public class TestMessages extends BaseTest {

  /** Public default constructor used by TestRig */
  public TestMessages() {
  }


  @Test public void testMessageStringificationIsConsistent() throws Exception {
    String action = "$other.tree = null;";
    ErrorQueue equeue = new ErrorQueue();
    ErrorManager.setErrorListener(equeue);
    Grammar g = new Grammar(
      "grammar a;\n" +
      "options { output = AST;}" +
      "otherrule\n" +
      "    : 'y' ;" +
      "rule\n" +
      "    : other=otherrule {" + action +"}\n" +
      "    ;");
    Tool antlr = newTool();
    CodeGenerator generator = new CodeGenerator(antlr, g, "Java");
    g.setCodeGenerator(generator);
    generator.genRecognizer(); // forces load of templates
    ActionTranslator translator = new ActionTranslator(generator,
                                  "rule",
                                  new CommonToken(ANTLRParser.ACTION,action),1);
    String rawTranslation =
      translator.translate();

    int expectedMsgID = ErrorManager.MSG_WRITE_TO_READONLY_ATTR;
    Object expectedArg = "other";
    Object expectedArg2 = "tree";
    GrammarSemanticsMessage expectedMessage =
      new GrammarSemanticsMessage(expectedMsgID, g, null, expectedArg, expectedArg2);
    String expectedMessageString = expectedMessage.toString();
    assertEquals(expectedMessageString, expectedMessage.toString());
  }
}
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