WorkspacePresentation.java 文件源码

public static WorkspaceContext getWorkspaceContext(InputStream source) throws IOException {
    WorkspaceLexer l = new WorkspaceLexer(CharStreams.fromStream(source));
    WorkspaceParser p = new WorkspaceParser(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);
        }
    });
    WorkspaceContext ctx = p.workspace();
    return ctx;
}