comparison mercurial/templater.py @ 37105:638a241202a3

templater: add hook point to populate additional mapping items

The 'revcache' dict will be inserted by this hook.

37104:656ac240f392

    @abc.abstractmethod
    def lookup(self, context, mapping, key):
        """Return a resource for the key if available; otherwise None"""

class nullresourcemapper(resourcemapper):
    def availablekeys(self, context, mapping):
        return set()

    def knownkeys(self):
        return set()

    def lookup(self, context, mapping, key):
        return None

class engine(object):
    '''template expansion engine.

    template expansion works like this. a map file contains key=value

        newres = self._resources.availablekeys(self, newmapping)
        mapping = {k: v for k, v in origmapping.iteritems()
                   if (k in knownres  # not a symbol per self.symbol()
                       or newres.isdisjoint(self._defaultrequires(k)))}
        mapping.update(newmapping)
        return mapping

    def _defaultrequires(self, key):
        """Resource keys required by the specified default symbol function"""
        v = self._defaults.get(key)

    def process(self, t, mapping):
        '''Perform expansion. t is name of map element to expand.
        mapping contains added elements for use during expansion. Is a
        generator.'''
        func, data = self._load(t)
        return _flatten(func(self, mapping, data))

engines = {'default': engine}

def stylelist():

37105:638a241202a3

    @abc.abstractmethod
    def lookup(self, context, mapping, key):
        """Return a resource for the key if available; otherwise None"""

    @abc.abstractmethod
    def populatemap(self, context, origmapping, newmapping):
        """Return a dict of additional mapping items which should be paired
        with the given new mapping"""

class nullresourcemapper(resourcemapper):
    def availablekeys(self, context, mapping):
        return set()

    def knownkeys(self):
        return set()

    def lookup(self, context, mapping, key):
        return None

    def populatemap(self, context, origmapping, newmapping):
        return {}

class engine(object):
    '''template expansion engine.

    template expansion works like this. a map file contains key=value

        newres = self._resources.availablekeys(self, newmapping)
        mapping = {k: v for k, v in origmapping.iteritems()
                   if (k in knownres  # not a symbol per self.symbol()
                       or newres.isdisjoint(self._defaultrequires(k)))}
        mapping.update(newmapping)
        mapping.update(
            self._resources.populatemap(self, origmapping, newmapping))
        return mapping

    def _defaultrequires(self, key):
        """Resource keys required by the specified default symbol function"""
        v = self._defaults.get(key)

    def process(self, t, mapping):
        '''Perform expansion. t is name of map element to expand.
        mapping contains added elements for use during expansion. Is a
        generator.'''
        func, data = self._load(t)
        # populate additional items only if they don't exist in the given
        # mapping. this is slightly different from overlaymap() because the
        # initial 'revcache' may contain pre-computed items.
        extramapping = self._resources.populatemap(self, {}, mapping)
        if extramapping:
            extramapping.update(mapping)
            mapping = extramapping
        return _flatten(func(self, mapping, data))

engines = {'default': engine}

def stylelist():