Spa.java 文件源码

public static Spa manifest(String resource) throws IOException {
    SpaLexer l = new SpaLexer(CharStreams.fromStream(Utils.resolveResource(Spa.class,
                                                                           resource)));
    SpaParser p = new SpaParser(new CommonTokenStream(l));
    p.addErrorListener(new BaseErrorListener() {
        @Override
        public void syntaxError(Recognizer<?, ?> recognizer,
                                Object offendingSymbol, int line,
                                int charPositionInLine, String msg,
                                RecognitionException e) {
            throw new IllegalStateException("failed to parse at line "
                                            + line + " due to " + msg, e);
        }
    });
    SpaContext spa = p.spa();
    SpaImporter importer = new SpaImporter();
    ParseTreeWalker walker = new ParseTreeWalker();
    walker.walk(importer, spa);
    return importer.getSpa();
}