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

Example 31 with Lexer

use of org.antlr.v4.runtime.Lexer in project ballerina by ballerina-lang.

the class SiddhiCompiler method parseTableDefinition.

public static TableDefinition parseTableDefinition(String source) throws SiddhiParserException {
    ANTLRInputStream input = new ANTLRInputStream(source);
    SiddhiQLLexer lexer = new SiddhiQLLexer(input);
    lexer.removeErrorListeners();
    lexer.addErrorListener(SiddhiErrorListener.INSTANCE);
    CommonTokenStream tokens = new CommonTokenStream(lexer);
    SiddhiQLParser parser = new SiddhiQLParser(tokens);
    parser.removeErrorListeners();
    parser.addErrorListener(SiddhiErrorListener.INSTANCE);
    ParseTree tree = parser.definition_table_final();
    SiddhiQLVisitor eval = new SiddhiQLBaseVisitorImpl();
    return (TableDefinition) eval.visit(tree);
}

Example 32 with Lexer

use of org.antlr.v4.runtime.Lexer in project ballerina by ballerina-lang.

the class SiddhiCompiler method parseTimeConstantDefinition.

public static TimeConstant parseTimeConstantDefinition(String source) throws SiddhiParserException {
    ANTLRInputStream input = new ANTLRInputStream(source);
    SiddhiQLLexer lexer = new SiddhiQLLexer(input);
    lexer.removeErrorListeners();
    lexer.addErrorListener(SiddhiErrorListener.INSTANCE);
    CommonTokenStream tokens = new CommonTokenStream(lexer);
    SiddhiQLParser parser = new SiddhiQLParser(tokens);
    parser.removeErrorListeners();
    parser.addErrorListener(SiddhiErrorListener.INSTANCE);
    ParseTree tree = parser.time_value();
    SiddhiQLVisitor eval = new SiddhiQLBaseVisitorImpl();
    return (TimeConstant) eval.visit(tree);
}

Example 33 with Lexer

use of org.antlr.v4.runtime.Lexer in project ballerina by ballerina-lang.

the class SiddhiCompiler method parsePartition.

public static Partition parsePartition(String source) throws SiddhiParserException {
    ANTLRInputStream input = new ANTLRInputStream(source);
    SiddhiQLLexer lexer = new SiddhiQLLexer(input);
    lexer.removeErrorListeners();
    lexer.addErrorListener(SiddhiErrorListener.INSTANCE);
    CommonTokenStream tokens = new CommonTokenStream(lexer);
    SiddhiQLParser parser = new SiddhiQLParser(tokens);
    parser.removeErrorListeners();
    parser.addErrorListener(SiddhiErrorListener.INSTANCE);
    ParseTree tree = parser.partition_final();
    SiddhiQLVisitor eval = new SiddhiQLBaseVisitorImpl();
    return (Partition) eval.visit(tree);
}

Example 34 with Lexer

use of org.antlr.v4.runtime.Lexer in project ballerina by ballerina-lang.

the class SiddhiCompiler method parseFunctionDefinition.

public static FunctionDefinition parseFunctionDefinition(String source) throws SiddhiParserException {
    ANTLRInputStream input = new ANTLRInputStream(source);
    SiddhiQLLexer lexer = new SiddhiQLLexer(input);
    lexer.removeErrorListeners();
    lexer.addErrorListener(SiddhiErrorListener.INSTANCE);
    CommonTokenStream tokens = new CommonTokenStream(lexer);
    SiddhiQLParser parser = new SiddhiQLParser(tokens);
    parser.removeErrorListeners();
    parser.addErrorListener(SiddhiErrorListener.INSTANCE);
    ParseTree tree = parser.definition_function_final();
    SiddhiQLVisitor eval = new SiddhiQLBaseVisitorImpl();
    return (FunctionDefinition) eval.visit(tree);
}

Example 35 with Lexer

use of org.antlr.v4.runtime.Lexer in project ballerina by ballerina-lang.

the class Parser method generateCompilationUnit.

private CompilationUnitNode generateCompilationUnit(PackageSourceEntry sourceEntry) {
    try {
        int prevErrCount = dlog.errorCount;
        BDiagnosticSource diagnosticSrc = getDiagnosticSource(sourceEntry);
        String entryName = sourceEntry.getEntryName();
        BLangCompilationUnit compUnit = (BLangCompilationUnit) TreeBuilder.createCompilationUnit();
        compUnit.setName(sourceEntry.getEntryName());
        compUnit.pos = new DiagnosticPos(diagnosticSrc, 1, 1, 1, 1);
        ANTLRInputStream ais = new ANTLRInputStream(new ByteArrayInputStream(sourceEntry.getCode()));
        ais.name = entryName;
        BallerinaLexer lexer = new BallerinaLexer(ais);
        lexer.removeErrorListeners();
        lexer.addErrorListener(new BallerinaParserErrorListener(context, diagnosticSrc));
        CommonTokenStream tokenStream = new CommonTokenStream(lexer);
        BallerinaParser parser = new BallerinaParser(tokenStream);
        parser.setErrorHandler(getErrorStrategy(diagnosticSrc));
        parser.addParseListener(newListener(tokenStream, compUnit, diagnosticSrc));
        parser.compilationUnit();
        return compUnit;
    } catch (IOException e) {
        throw new RuntimeException("Error in populating package model: " + e.getMessage(), e);
    }
}