comparison mercurial/templater.py @ 34534:b3073e175c17

templater: wrap get/min/max result so map operation can apply to element

See the test for usage example.

wraphybridvalue() takes a key/value pair because a hybrid dict passes a key
to its makemap() function. Since makemap() of showmanifest() doesn't need
a key, it's set to None.

34533:163fa0aea71e

    if not util.safehasattr(dictarg, 'get'):
        # i18n: "get" is a keyword
        raise error.ParseError(_("get() expects a dict as first argument"))

    key = evalfuncarg(context, mapping, args[1])
    return dictarg.get(key)

@templatefunc('if(expr, then[, else])')
def if_(context, mapping, args):
    """Conditionally execute based on the result of
    an expression."""

        # i18n: "max" is a keyword
        raise error.ParseError(_("max expects one arguments"))

    iterable = evalfuncarg(context, mapping, args[0])
    try:
        return max(iterable)
    except (TypeError, ValueError):
        # i18n: "max" is a keyword
        raise error.ParseError(_("max first argument should be an iterable"))

@templatefunc('min(iterable)')
def min_(context, mapping, args, **kwargs):
    """Return the min of an iterable"""
    if len(args) != 1:
        # i18n: "min" is a keyword
        raise error.ParseError(_("min expects one arguments"))

    iterable = evalfuncarg(context, mapping, args[0])
    try:
        return min(iterable)
    except (TypeError, ValueError):
        # i18n: "min" is a keyword
        raise error.ParseError(_("min first argument should be an iterable"))

@templatefunc('mod(a, b)')
def mod(context, mapping, args):
    """Calculate a mod b such that a / b + a mod b == a"""
    if not len(args) == 2:

34534:b3073e175c17

    if not util.safehasattr(dictarg, 'get'):
        # i18n: "get" is a keyword
        raise error.ParseError(_("get() expects a dict as first argument"))

    key = evalfuncarg(context, mapping, args[1])
    val = dictarg.get(key)
    if val is None:
        return
    return templatekw.wraphybridvalue(dictarg, key, val)

@templatefunc('if(expr, then[, else])')
def if_(context, mapping, args):
    """Conditionally execute based on the result of
    an expression."""

        # i18n: "max" is a keyword
        raise error.ParseError(_("max expects one arguments"))

    iterable = evalfuncarg(context, mapping, args[0])
    try:
        x = max(iterable)
    except (TypeError, ValueError):
        # i18n: "max" is a keyword
        raise error.ParseError(_("max first argument should be an iterable"))
    return templatekw.wraphybridvalue(iterable, x, x)

@templatefunc('min(iterable)')
def min_(context, mapping, args, **kwargs):
    """Return the min of an iterable"""
    if len(args) != 1:
        # i18n: "min" is a keyword
        raise error.ParseError(_("min expects one arguments"))

    iterable = evalfuncarg(context, mapping, args[0])
    try:
        x = min(iterable)
    except (TypeError, ValueError):
        # i18n: "min" is a keyword
        raise error.ParseError(_("min first argument should be an iterable"))
    return templatekw.wraphybridvalue(iterable, x, x)

@templatefunc('mod(a, b)')
def mod(context, mapping, args):
    """Calculate a mod b such that a / b + a mod b == a"""
    if not len(args) == 2: