TypeBuilder.java 文件源码

/**
 * Parse a Haskell type declaration into a TypeT instance.
 *
 * @param hs The Haskell type declaration
 * @return Type
 */
public Type build(final String hs) {
    TypeLexer lexer = new TypeLexer(new ANTLRInputStream(hs));
    CommonTokenStream tokens = new CommonTokenStream(lexer);
    TypeParser parser = new TypeParser(tokens);

    ParserRuleContext tree = parser.type();
    ParseTreeWalker walker = new ParseTreeWalker();
    TypeBuilderListener extractor;

    extractor = new TypeBuilderListener(this.typeClasses);

    walker.walk(extractor, tree);

    return extractor.result();
}