comparison mercurial/templater.py @ 31922:0f41f1e3c75c

parser: preserve order of keyword arguments

This helps building dict(key1=value1, ...) in deterministic way.

31921:2156934b7917

    >>> context = engine(lambda t: (runsymbol, t))
    >>> def fargs(expr, argspec):
    ...     x = _parseexpr(expr)
    ...     n = getsymbol(x[1])
    ...     return _buildfuncargs(x[2], context, exprmethods, n, argspec)
    >>> sorted(fargs('a(l=1, k=2)', 'k l m').keys())
    ['k', 'l']
    >>> args = fargs('a(opts=1, k=2)', '**opts')
    >>> args.keys(), sorted(args['opts'].keys())
    (['opts'], ['k', 'opts'])
    """
    def compiledict(xs):
        return dict((k, compileexp(x, context, curmethods))
                    for k, x in xs.iteritems())
    def compilelist(xs):
        return [compileexp(x, context, curmethods) for x in xs]

    if not argspec:
        # filter or function with no argspec: return list of positional args

    # function with argspec: return dict of named args
    _poskeys, varkey, _keys, optkey = argspec = parser.splitargspec(argspec)
    treeargs = parser.buildargsdict(getlist(exp), funcname, argspec,
                                    keyvaluenode='keyvalue', keynode='symbol')
    compargs = {}
    if varkey:
        compargs[varkey] = compilelist(treeargs.pop(varkey))
    if optkey:
        compargs[optkey] = compiledict(treeargs.pop(optkey))
    compargs.update(compiledict(treeargs))

31922:0f41f1e3c75c

    >>> context = engine(lambda t: (runsymbol, t))
    >>> def fargs(expr, argspec):
    ...     x = _parseexpr(expr)
    ...     n = getsymbol(x[1])
    ...     return _buildfuncargs(x[2], context, exprmethods, n, argspec)
    >>> fargs('a(l=1, k=2)', 'k l m').keys()
    ['l', 'k']
    >>> args = fargs('a(opts=1, k=2)', '**opts')
    >>> args.keys(), args['opts'].keys()
    (['opts'], ['opts', 'k'])
    """
    def compiledict(xs):
        return util.sortdict((k, compileexp(x, context, curmethods))
                             for k, x in xs.iteritems())
    def compilelist(xs):
        return [compileexp(x, context, curmethods) for x in xs]

    if not argspec:
        # filter or function with no argspec: return list of positional args

    # function with argspec: return dict of named args
    _poskeys, varkey, _keys, optkey = argspec = parser.splitargspec(argspec)
    treeargs = parser.buildargsdict(getlist(exp), funcname, argspec,
                                    keyvaluenode='keyvalue', keynode='symbol')
    compargs = util.sortdict()
    if varkey:
        compargs[varkey] = compilelist(treeargs.pop(varkey))
    if optkey:
        compargs[optkey] = compiledict(treeargs.pop(optkey))
    compargs.update(compiledict(treeargs))