@Override
public void checkConfiguration(final Issues issues) {
super.checkConfiguration(issues);
if (getOptions().isBacktrackLexer() && getOptions().isIgnoreCase()) {
issues.addError("Backtracking lexer and ignorecase cannot be combined for now.");
}
}
@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('/'))
.replace("//", "/"));
String[] lexerAntlrParams = getAntlrParams();
lexerAntlrParams[lexerAntlrParams.length - 1] =
absoluteLexerFileName
.substring(0, absoluteLexerFileName.lastIndexOf('/'))
.replace("//", "/");
// 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);
addAntlrParam("-lib");
addAntlrParam(libPath.replace("//", "/"));
getAntlrTool()
.runWithEncodingAndParams(
absoluteParserFileName.replace("//", "/"), encoding, getAntlrParams());
simplifyUnorderedGroupPredicatesIfRequired(grammar, absoluteParserFileName);
splitParserAndLexerIfEnabled(absoluteLexerFileName, absoluteParserFileName);
suppressWarnings(absoluteLexerFileName, absoluteParserFileName);
MutableTokenDefProvider provider = createLexerTokensProvider(lexerBaseFileName);
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")));
} catch (IOException e) {
throw new RuntimeException(e);
}
helper.discardHelper(grammar);
}