Examples with CharStream org.antlr.v4.runtime.CharStream used on opensource projects

Example 1 with CharStream

use of org.antlr.v4.runtime.CharStream in project elasticsearch by elastic.

the class EnhancedPainlessLexer method nextToken.

@Override
public Token nextToken() {
    if (stashedNext != null) {
        previous = stashedNext;
        stashedNext = null;
        return previous;
    }
    Token next = super.nextToken();
    if (insertSemicolon(previous, next)) {
        stashedNext = next;
        previous = _factory.create(new Pair<TokenSource, CharStream>(this, _input), PainlessLexer.SEMICOLON, ";", Lexer.DEFAULT_TOKEN_CHANNEL, next.getStartIndex(), next.getStopIndex(), next.getLine(), next.getCharPositionInLine());
        return previous;
    } else {
        previous = next;
        return next;
    }
}

Example 2 with CharStream

use of org.antlr.v4.runtime.CharStream in project pinot by linkedin.

the class Pql2Compiler method compileToBrokerRequest.

@Override
public BrokerRequest compileToBrokerRequest(String expression) throws Pql2CompilationException {
    try {
        //
        CharStream charStream = new ANTLRInputStream(expression);
        PQL2Lexer lexer = new PQL2Lexer(charStream);
        lexer.setTokenFactory(new CommonTokenFactory(true));
        TokenStream tokenStream = new UnbufferedTokenStream<CommonToken>(lexer);
        PQL2Parser parser = new PQL2Parser(tokenStream);
        parser.setErrorHandler(new BailErrorStrategy());
        // Parse
        ParseTree parseTree = parser.root();
        ParseTreeWalker walker = new ParseTreeWalker();
        Pql2AstListener listener = new Pql2AstListener(expression);
        walker.walk(listener, parseTree);
        AstNode rootNode = listener.getRootNode();
        BrokerRequest brokerRequest = new BrokerRequest();
        rootNode.updateBrokerRequest(brokerRequest);
        return brokerRequest;
    } catch (Pql2CompilationException e) {
        throw e;
    } catch (Exception e) {
        throw new Pql2CompilationException(e.getMessage());
    }
}

Example 3 with CharStream

use of org.antlr.v4.runtime.CharStream in project antlr4 by antlr.

the class BaseGoTest method getTokenTypes.

public List<String> getTokenTypes(LexerGrammar lg, ATN atn, CharStream input) {
    LexerATNSimulator interp = new LexerATNSimulator(atn, new DFA[] { new DFA(atn.modeToStartState.get(Lexer.DEFAULT_MODE)) }, null);
    List<String> tokenTypes = new ArrayList<String>();
    int ttype;
    boolean hitEOF = false;
    do {
        if (hitEOF) {
            tokenTypes.add("EOF");
            break;
        }
        int t = input.LA(1);
        ttype = interp.match(input, Lexer.DEFAULT_MODE);
        if (ttype == Token.EOF) {
            tokenTypes.add("EOF");
        } else {
            tokenTypes.add(lg.typeToTokenList.get(ttype));
        }
        if (t == IntStream.EOF) {
            hitEOF = true;
        }
    } while (ttype != Token.EOF);
    return tokenTypes;
}

Example 4 with CharStream

use of org.antlr.v4.runtime.CharStream in project antlr4 by antlr.

the class BaseJavaTest method getTokenTypes.

public List<String> getTokenTypes(LexerGrammar lg, ATN atn, CharStream input) {
    LexerATNSimulator interp = new LexerATNSimulator(atn, new DFA[] { new DFA(atn.modeToStartState.get(Lexer.DEFAULT_MODE)) }, null);
    List<String> tokenTypes = new ArrayList<String>();
    int ttype;
    boolean hitEOF = false;
    do {
        if (hitEOF) {
            tokenTypes.add("EOF");
            break;
        }
        int t = input.LA(1);
        ttype = interp.match(input, Lexer.DEFAULT_MODE);
        if (ttype == Token.EOF) {
            tokenTypes.add("EOF");
        } else {
            tokenTypes.add(lg.typeToTokenList.get(ttype));
        }
        if (t == IntStream.EOF) {
            hitEOF = true;
        }
    } while (ttype != Token.EOF);
    return tokenTypes;
}

Example 5 with CharStream

use of org.antlr.v4.runtime.CharStream in project antlr4 by antlr.

the class BaseBrowserTest method getTokenTypes.

public List<String> getTokenTypes(LexerGrammar lg, ATN atn, CharStream input) {
    LexerATNSimulator interp = new LexerATNSimulator(atn, new DFA[] { new DFA(atn.modeToStartState.get(Lexer.DEFAULT_MODE)) }, null);
    List<String> tokenTypes = new ArrayList<String>();
    int ttype;
    boolean hitEOF = false;
    do {
        if (hitEOF) {
            tokenTypes.add("EOF");
            break;
        }
        int t = input.LA(1);
        ttype = interp.match(input, Lexer.DEFAULT_MODE);
        if (ttype == Token.EOF) {
            tokenTypes.add("EOF");
        } else {
            tokenTypes.add(lg.typeToTokenList.get(ttype));
        }
        if (t == IntStream.EOF) {
            hitEOF = true;
        }
    } while (ttype != Token.EOF);
    return tokenTypes;
}