Example usage for org.antlr.v4.runtime Vocabulary getLiteralName

Introduction

In this page you can find the example usage for org.antlr.v4.runtime Vocabulary getLiteralName.

Prototype

String getLiteralName(int tokenType);

Source Link

Document

Gets the string literal associated with a token type.

Usage

From source file:com.facebook.presto.sql.ReservedIdentifiers.java

License:Apache License

private static Set<String> possibleIdentifiers() {
    ImmutableSet.Builder<String> names = ImmutableSet.builder();
    Vocabulary vocabulary = SqlBaseLexer.VOCABULARY;
    for (int i = 0; i <= vocabulary.getMaxTokenType(); i++) {
        String name = nullToEmpty(vocabulary.getLiteralName(i));
        Matcher matcher = IDENTIFIER.matcher(name);
        if (matcher.matches()) {
            names.add(matcher.group(1));
        }//w ww  .j  a v a 2  s.c  o  m
    }
    return names.build();
}

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