eu.mihosoft.vmf.vmftext.vmtemplates.model-unparser-match-alt.vm Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of vmf-text Show documentation
VMF-Text
The newest version!
#*
 * Copyright 2017-2018 Michael Hoffer . All rights reserved.
 * Copyright 2017-2018 Goethe Center for Scientific Computing, University Frankfurt. All rights reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 * If you use this software for scientific research then please cite the following publication(s):
 *
 * M. Hoffer, C. Poliwoda, & G. Wittum. (2013). Visual reflection library:
 * a framework for declarative GUI programming on the Java platform.
 * Computing and Visualization in Science, 2013, 16(4),
 * 181–192. http://doi.org/10.1007/s00791-014-0230-y
 *#
  public static boolean match${altName}(String s) {

    CharStream input = CharStreams.fromString(s);

    ${grammarName}ModelUnparserGrammarLexer lexer = new ${grammarName}ModelUnparserGrammarLexer(input);
    lexer.removeErrorListener(org.antlr.v4.runtime.ConsoleErrorListener.INSTANCE);
    CommonTokenStream tokens = new CommonTokenStream(lexer);
    ${grammarName}ModelUnparserGrammarParser parser = new ${grammarName}ModelUnparserGrammarParser(tokens);

    parser.removeErrorListener(org.antlr.v4.runtime.ConsoleErrorListener.INSTANCE);

    class ErrorListener implements org.antlr.v4.runtime.ANTLRErrorListener {
      private boolean errors = false;

      @Override
      public void syntaxError(org.antlr.v4.runtime.Recognizer recognizer, Object offendingSymbol, int line, int charPositionInLine, String msg, org.antlr.v4.runtime.RecognitionException e) {
        errors = true;
      }

      @Override
      public void reportAmbiguity(org.antlr.v4.runtime.Parser recognizer, org.antlr.v4.runtime.dfa.DFA dfa, int startIndex, int stopIndex, boolean exact, java.util.BitSet ambigAlts, org.antlr.v4.runtime.atn.ATNConfigSet configs) {

      }

      @Override
      public void reportAttemptingFullContext(org.antlr.v4.runtime.Parser recognizer, org.antlr.v4.runtime.dfa.DFA dfa, int startIndex, int stopIndex, java.util.BitSet conflictingAlts, org.antlr.v4.runtime.atn.ATNConfigSet configs) {

      }

      @Override
      public void reportContextSensitivity(org.antlr.v4.runtime.Parser recognizer, org.antlr.v4.runtime.dfa.DFA dfa, int startIndex, int stopIndex, int prediction, org.antlr.v4.runtime.atn.ATNConfigSet configs) {

      }

      public boolean hasErrors() {
        return this.errors;
      }
    }

    ErrorListener l = new ErrorListener();

    lexer.addErrorListener(l);
    parser.addErrorListener(l);

    // we cancel immediately if errors occur
    parser.setErrorHandler(new BailErrorStrategy());
    try {
      parser.$Util.firstToLower(${altName})();
    } catch(org.antlr.v4.runtime.misc.ParseCancellationException ex) {
      return false;
    } catch(Exception ex) {
      return false;
    }

    // no errors encountered
    return !l.hasErrors();

  }