Examples of KeywordHelper

Examples of org.eclipse.xtext.generator.parser.antlr.ex.common.KeywordHelper

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    return partialParsing;
  }

  @Override
  public void generate(final Grammar grammar, final XpandExecutionContext ctx) {
    KeywordHelper helper = new KeywordHelper(grammar, getOptions().isIgnoreCase());
    super.generate(grammar, ctx);
    final String srcGenPath = ctx.getOutput().getOutlet(Generator.SRC_GEN_UI).getPath();
    final String encoding = getEncoding(ctx, Generator.SRC_GEN_UI);
    String libPath = srcGenPath + "/"
        + getFragmentHelper().getContentAssistLexerGrammarFileName(grammar).replace('.', '/');
    libPath = libPath.substring(0, libPath.lastIndexOf('/'));
    String absoluteLexerFileName = srcGenPath + "/"
        + getFragmentHelper().getContentAssistLexerGrammarFileName(grammar).replace('.', '/')
        + ".g";
    String absoluteParserFileName = srcGenPath + "/"
        + getFragmentHelper().getContentAssistParserGrammarFileName(grammar).replace('.', '/')
        + ".g";
    addAntlrParam("-fo");
    addAntlrParam(absoluteParserFileName.substring(0, absoluteParserFileName.lastIndexOf('/')));
    String[] lexerAntlrParams = getAntlrParams();
    lexerAntlrParams[lexerAntlrParams.length - 1] = absoluteLexerFileName.substring(0,
        absoluteLexerFileName.lastIndexOf('/'));

    // copy
    copy(new File(absoluteLexerFileName), new File(absoluteLexerFileName.replace(".g", ".gxtext")));
    writeFile(
        absoluteLexerFileName,
        readFile("../antlr4ide.core/src/main/java/com/github/jknack/parser/antlr/lexer/InternalAntlr4Lexer.g"));

    getAntlrTool().runWithEncodingAndParams(absoluteLexerFileName, encoding, lexerAntlrParams);
    addAntlrParam("-lib");
    addAntlrParam(libPath);
    getAntlrTool().runWithEncodingAndParams(absoluteParserFileName, encoding, getAntlrParams());
    Charset charset = Charset.forName(encoding);
    simplifyUnorderedGroupPredicatesIfRequired(grammar, absoluteParserFileName, charset);
    splitParserAndLexerIfEnabled(absoluteLexerFileName, absoluteParserFileName, charset);
    suppressWarnings(absoluteLexerFileName, absoluteParserFileName, charset);
    normalizeLineDelimiters(absoluteLexerFileName, absoluteParserFileName, charset);
    normalizeTokens(absoluteLexerFileName, charset);
    normalizeTokens(absoluteParserFileName, charset);
    helper.discardHelper(grammar);
  }
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Examples of org.eclipse.xtext.generator.parser.antlr.ex.common.KeywordHelper

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*/
public class AntlrGeneratorFragmentWithCustomLexer extends BaseAntlrGeneratorFragmentEx {

  @Override
  public void generate(final Grammar grammar, final XpandExecutionContext ctx) {
    KeywordHelper helper = new KeywordHelper(grammar, getOptions().isIgnoreCase());
    super.generate(grammar, ctx);
    final String srcGenPath = ctx.getOutput().getOutlet(Generator.SRC_GEN).getPath();
    final String encoding = getEncoding(ctx, Generator.SRC_GEN);
    final String lexerBaseFileName = srcGenPath+"/"+getFragmentHelper().getLexerGrammarFileName(grammar).replace('.', '/');
    String libPath = lexerBaseFileName;
    libPath = libPath.substring(0, libPath.lastIndexOf('/'));
    String absoluteLexerFileName = lexerBaseFileName + ".g";
    String absoluteParserFileName = srcGenPath+"/"+getFragmentHelper().getParserGrammarFileName(grammar).replace('.', '/')+".g";
    addAntlrParam("-fo");
    addAntlrParam(absoluteParserFileName.substring(0, absoluteParserFileName.lastIndexOf('/')));
    String[] lexerAntlrParams = getAntlrParams();
    lexerAntlrParams[lexerAntlrParams.length - 1] = absoluteLexerFileName.substring(0, absoluteLexerFileName.lastIndexOf('/'));

    // copy
    copy(new File(absoluteLexerFileName), new File(lexerBaseFileName + ".gxtext"));
    writeFile(absoluteLexerFileName, readFile(absoluteLexerFileName.replace("src-gen", "java")));

    getAntlrTool().runWithEncodingAndParams(absoluteLexerFileName.replace("//", "/"), encoding, lexerAntlrParams);
    cleanupLexerTokensFile(lexerBaseFileName, helper, encoding);
    addAntlrParam("-lib");
    addAntlrParam(libPath);
    getAntlrTool().runWithEncodingAndParams(absoluteParserFileName, encoding, getAntlrParams());
    Charset charset = Charset.forName(encoding);
    simplifyUnorderedGroupPredicatesIfRequired(grammar, absoluteParserFileName, charset);
    splitParserAndLexerIfEnabled(absoluteLexerFileName, absoluteParserFileName, charset);
    suppressWarnings(absoluteLexerFileName, absoluteParserFileName, charset);
    normalizeLineDelimiters(absoluteLexerFileName, absoluteParserFileName, charset);
    normalizeTokens(absoluteParserFileName, charset);
    MutableTokenDefProvider provider = createLexerTokensProvider(lexerBaseFileName, helper, charset);
    for(Map.Entry<Integer, String> entry: provider.getTokenDefMap().entrySet()) {
      String value = entry.getValue();
      if(helper.isKeywordRule(value)) {
        String keywordAsAntlrString = AntlrGrammarGenUtil.toAntlrString(helper.getKeywordValue(value));
        entry.setValue("'" + keywordAsAntlrString + "'");
      } else if (value.startsWith("'")) {
        value = AntlrGrammarGenUtil.toAntlrString(value);
        entry.setValue("'" + value + "'");
      }
    }
    try {
      provider.writeTokenFile(new PrintWriter(new File(srcGenPath+"/"+getFragmentHelper().getParserGrammarFileName(grammar).replace('.', '/') + ".tokens"), encoding));
    }
    catch (IOException e) {
      throw new RuntimeException(e);
    }
    normalizeTokens(absoluteLexerFileName, charset);
    helper.discardHelper(grammar);
  }
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