How to use the hy.compiler.hy_compile function in hy

def test_ast_bad_type():
    "Make sure AST breakage can happen"
    class C:
        pass
    try:
        hy_compile(C(), "__main__")
        assert True is False
    except TypeError:
        pass

if options.with_source:
        # need special printing on Windows in case the
        # codepage doesn't support utf-8 characters
        if platform.system() == "Windows":
            for h in hst:
                try:
                    print(h)
                except:
                    print(str(h).encode('utf-8'))
        else:
            print(hst)
        print()
        print()

    with filtered_hy_exceptions():
        _ast = hy_compile(hst, '__main__', filename=filename, source=source)

    if options.with_ast:
        if platform.system() == "Windows":
            _print_for_windows(astor.dump_tree(_ast))
        else:
            print(astor.dump_tree(_ast))
        print()
        print()

    if not options.without_python:
        if platform.system() == "Windows":
            _print_for_windows(astor.code_gen.to_source(_ast))
        else:
            print(astor.code_gen.to_source(_ast))

    parser.exit(0)

def import_buffer_to_ast(buf, module_name):
    """ Import content from buf and return a Python AST."""
    return hy_compile(import_buffer_to_hst(buf), module_name)

def import_file_to_ast(fpath, module_name):
    """Import content from fpath and return a Python AST."""
    return hy_compile(import_file_to_hst(fpath), module_name)

def import_file_to_ast(fpath, module_name):
    """Import content from fpath and return a Python AST."""
    return hy_compile(import_file_to_hst(fpath), module_name)