perf: use storage API for resolving manifest node
lookup() isn't part of the storage API. And this code shouldn't
be accessing manifestlog._revlog directly for the modern code base.
So let's port it to the modern API.
Note that the previous code was busted for cases where we needed
to call lookup() because lookup() isn't exposed by manifestrevlog
any more.
This change is strictly BC breaking because we no longer support
resolving partial nodes. But it is a perf* command and I don't
think we should flag the change as such.
Differential Revision: https://phab.mercurial-scm.org/D4390
# templateutil.py - utility for template evaluation
#
# Copyright 2005, 2006 Matt Mackall <mpm@selenic.com>
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2 or any later version.
from __future__ import absolute_import
import abc
import types
from .i18n import _
from . import (
error,
pycompat,
util,
)
from .utils import (
dateutil,
stringutil,
)
class ResourceUnavailable(error.Abort):
pass
class TemplateNotFound(error.Abort):
pass
class wrapped(object):
"""Object requiring extra conversion prior to displaying or processing
as value
Use unwrapvalue() or unwrapastype() to obtain the inner object.
"""
__metaclass__ = abc.ABCMeta
@abc.abstractmethod
def contains(self, context, mapping, item):
"""Test if the specified item is in self
The item argument may be a wrapped object.
"""
@abc.abstractmethod
def getmember(self, context, mapping, key):
"""Return a member item for the specified key
The key argument may be a wrapped object.
A returned object may be either a wrapped object or a pure value
depending on the self type.
"""
@abc.abstractmethod
def getmin(self, context, mapping):
"""Return the smallest item, which may be either a wrapped or a pure
value depending on the self type"""
@abc.abstractmethod
def getmax(self, context, mapping):
"""Return the largest item, which may be either a wrapped or a pure
value depending on the self type"""
@abc.abstractmethod
def filter(self, context, mapping, select):
"""Return new container of the same type which includes only the
selected elements
select() takes each item as a wrapped object and returns True/False.
"""
@abc.abstractmethod
def itermaps(self, context):
"""Yield each template mapping"""
@abc.abstractmethod
def join(self, context, mapping, sep):
"""Join items with the separator; Returns a bytes or (possibly nested)
generator of bytes
A pre-configured template may be rendered per item if this container
holds unprintable items.
"""
@abc.abstractmethod
def show(self, context, mapping):
"""Return a bytes or (possibly nested) generator of bytes representing
the underlying object
A pre-configured template may be rendered if the underlying object is
not printable.
"""
@abc.abstractmethod
def tobool(self, context, mapping):
"""Return a boolean representation of the inner value"""
@abc.abstractmethod
def tovalue(self, context, mapping):
"""Move the inner value object out or create a value representation
A returned value must be serializable by templaterfilters.json().
"""
class mappable(object):
"""Object which can be converted to a single template mapping"""
def itermaps(self, context):
yield self.tomap(context)
@abc.abstractmethod
def tomap(self, context):
"""Create a single template mapping representing this"""
class wrappedbytes(wrapped):
"""Wrapper for byte string"""
def __init__(self, value):
self._value = value
def contains(self, context, mapping, item):
item = stringify(context, mapping, item)
return item in self._value
def getmember(self, context, mapping, key):
raise error.ParseError(_('%r is not a dictionary')
% pycompat.bytestr(self._value))
def getmin(self, context, mapping):
return self._getby(context, mapping, min)
def getmax(self, context, mapping):
return self._getby(context, mapping, max)
def _getby(self, context, mapping, func):
if not self._value:
raise error.ParseError(_('empty string'))
return func(pycompat.iterbytestr(self._value))
def filter(self, context, mapping, select):
raise error.ParseError(_('%r is not filterable')
% pycompat.bytestr(self._value))
def itermaps(self, context):
raise error.ParseError(_('%r is not iterable of mappings')
% pycompat.bytestr(self._value))
def join(self, context, mapping, sep):
return joinitems(pycompat.iterbytestr(self._value), sep)
def show(self, context, mapping):
return self._value
def tobool(self, context, mapping):
return bool(self._value)
def tovalue(self, context, mapping):
return self._value
class wrappedvalue(wrapped):
"""Generic wrapper for pure non-list/dict/bytes value"""
def __init__(self, value):
self._value = value
def contains(self, context, mapping, item):
raise error.ParseError(_("%r is not iterable") % self._value)
def getmember(self, context, mapping, key):
raise error.ParseError(_('%r is not a dictionary') % self._value)
def getmin(self, context, mapping):
raise error.ParseError(_("%r is not iterable") % self._value)
def getmax(self, context, mapping):
raise error.ParseError(_("%r is not iterable") % self._value)
def filter(self, context, mapping, select):
raise error.ParseError(_("%r is not iterable") % self._value)
def itermaps(self, context):
raise error.ParseError(_('%r is not iterable of mappings')
% self._value)
def join(self, context, mapping, sep):
raise error.ParseError(_('%r is not iterable') % self._value)
def show(self, context, mapping):
if self._value is None:
return b''
return pycompat.bytestr(self._value)
def tobool(self, context, mapping):
if self._value is None:
return False
if isinstance(self._value, bool):
return self._value
# otherwise evaluate as string, which means 0 is True
return bool(pycompat.bytestr(self._value))
def tovalue(self, context, mapping):
return self._value
class date(mappable, wrapped):
"""Wrapper for date tuple"""
def __init__(self, value, showfmt='%d %d'):
# value may be (float, int), but public interface shouldn't support
# floating-point timestamp
self._unixtime, self._tzoffset = map(int, value)
self._showfmt = showfmt
def contains(self, context, mapping, item):
raise error.ParseError(_('date is not iterable'))
def getmember(self, context, mapping, key):
raise error.ParseError(_('date is not a dictionary'))
def getmin(self, context, mapping):
raise error.ParseError(_('date is not iterable'))
def getmax(self, context, mapping):
raise error.ParseError(_('date is not iterable'))
def filter(self, context, mapping, select):
raise error.ParseError(_('date is not iterable'))
def join(self, context, mapping, sep):
raise error.ParseError(_("date is not iterable"))
def show(self, context, mapping):
return self._showfmt % (self._unixtime, self._tzoffset)
def tomap(self, context):
return {'unixtime': self._unixtime, 'tzoffset': self._tzoffset}
def tobool(self, context, mapping):
return True
def tovalue(self, context, mapping):
return (self._unixtime, self._tzoffset)
class hybrid(wrapped):
"""Wrapper for list or dict to support legacy template
This class allows us to handle both:
- "{files}" (legacy command-line-specific list hack) and
- "{files % '{file}\n'}" (hgweb-style with inlining and function support)
and to access raw values:
- "{ifcontains(file, files, ...)}", "{ifcontains(key, extras, ...)}"
- "{get(extras, key)}"
- "{files|json}"
"""
def __init__(self, gen, values, makemap, joinfmt, keytype=None):
self._gen = gen # generator or function returning generator
self._values = values
self._makemap = makemap
self._joinfmt = joinfmt
self._keytype = keytype # hint for 'x in y' where type(x) is unresolved
def contains(self, context, mapping, item):
item = unwrapastype(context, mapping, item, self._keytype)
return item in self._values
def getmember(self, context, mapping, key):
# TODO: maybe split hybrid list/dict types?
if not util.safehasattr(self._values, 'get'):
raise error.ParseError(_('not a dictionary'))
key = unwrapastype(context, mapping, key, self._keytype)
return self._wrapvalue(key, self._values.get(key))
def getmin(self, context, mapping):
return self._getby(context, mapping, min)
def getmax(self, context, mapping):
return self._getby(context, mapping, max)
def _getby(self, context, mapping, func):
if not self._values:
raise error.ParseError(_('empty sequence'))
val = func(self._values)
return self._wrapvalue(val, val)
def _wrapvalue(self, key, val):
if val is None:
return
if util.safehasattr(val, '_makemap'):
# a nested hybrid list/dict, which has its own way of map operation
return val
return hybriditem(None, key, val, self._makemap)
def filter(self, context, mapping, select):
if util.safehasattr(self._values, 'get'):
values = {k: v for k, v in self._values.iteritems()
if select(self._wrapvalue(k, v))}
else:
values = [v for v in self._values if select(self._wrapvalue(v, v))]
return hybrid(None, values, self._makemap, self._joinfmt, self._keytype)
def itermaps(self, context):
makemap = self._makemap
for x in self._values:
yield makemap(x)
def join(self, context, mapping, sep):
# TODO: switch gen to (context, mapping) API?
return joinitems((self._joinfmt(x) for x in self._values), sep)
def show(self, context, mapping):
# TODO: switch gen to (context, mapping) API?
gen = self._gen
if gen is None:
return self.join(context, mapping, ' ')
if callable(gen):
return gen()
return gen
def tobool(self, context, mapping):
return bool(self._values)
def tovalue(self, context, mapping):
# TODO: make it non-recursive for trivial lists/dicts
xs = self._values
if util.safehasattr(xs, 'get'):
return {k: unwrapvalue(context, mapping, v)
for k, v in xs.iteritems()}
return [unwrapvalue(context, mapping, x) for x in xs]
class hybriditem(mappable, wrapped):
"""Wrapper for non-list/dict object to support map operation
This class allows us to handle both:
- "{manifest}"
- "{manifest % '{rev}:{node}'}"
- "{manifest.rev}"
"""
def __init__(self, gen, key, value, makemap):
self._gen = gen # generator or function returning generator
self._key = key
self._value = value # may be generator of strings
self._makemap = makemap
def tomap(self, context):
return self._makemap(self._key)
def contains(self, context, mapping, item):
w = makewrapped(context, mapping, self._value)
return w.contains(context, mapping, item)
def getmember(self, context, mapping, key):
w = makewrapped(context, mapping, self._value)
return w.getmember(context, mapping, key)
def getmin(self, context, mapping):
w = makewrapped(context, mapping, self._value)
return w.getmin(context, mapping)
def getmax(self, context, mapping):
w = makewrapped(context, mapping, self._value)
return w.getmax(context, mapping)
def filter(self, context, mapping, select):
w = makewrapped(context, mapping, self._value)
return w.filter(context, mapping, select)
def join(self, context, mapping, sep):
w = makewrapped(context, mapping, self._value)
return w.join(context, mapping, sep)
def show(self, context, mapping):
# TODO: switch gen to (context, mapping) API?
gen = self._gen
if gen is None:
return pycompat.bytestr(self._value)
if callable(gen):
return gen()
return gen
def tobool(self, context, mapping):
w = makewrapped(context, mapping, self._value)
return w.tobool(context, mapping)
def tovalue(self, context, mapping):
return _unthunk(context, mapping, self._value)
class _mappingsequence(wrapped):
"""Wrapper for sequence of template mappings
This represents an inner template structure (i.e. a list of dicts),
which can also be rendered by the specified named/literal template.
Template mappings may be nested.
"""
def __init__(self, name=None, tmpl=None, sep=''):
if name is not None and tmpl is not None:
raise error.ProgrammingError('name and tmpl are mutually exclusive')
self._name = name
self._tmpl = tmpl
self._defaultsep = sep
def contains(self, context, mapping, item):
raise error.ParseError(_('not comparable'))
def getmember(self, context, mapping, key):
raise error.ParseError(_('not a dictionary'))
def getmin(self, context, mapping):
raise error.ParseError(_('not comparable'))
def getmax(self, context, mapping):
raise error.ParseError(_('not comparable'))
def filter(self, context, mapping, select):
# implement if necessary; we'll need a wrapped type for a mapping dict
raise error.ParseError(_('not filterable without template'))
def join(self, context, mapping, sep):
mapsiter = _iteroverlaymaps(context, mapping, self.itermaps(context))
if self._name:
itemiter = (context.process(self._name, m) for m in mapsiter)
elif self._tmpl:
itemiter = (context.expand(self._tmpl, m) for m in mapsiter)
else:
raise error.ParseError(_('not displayable without template'))
return joinitems(itemiter, sep)
def show(self, context, mapping):
return self.join(context, mapping, self._defaultsep)
def tovalue(self, context, mapping):
knownres = context.knownresourcekeys()
items = []
for nm in self.itermaps(context):
# drop internal resources (recursively) which shouldn't be displayed
lm = context.overlaymap(mapping, nm)
items.append({k: unwrapvalue(context, lm, v)
for k, v in nm.iteritems() if k not in knownres})
return items
class mappinggenerator(_mappingsequence):
"""Wrapper for generator of template mappings
The function ``make(context, *args)`` should return a generator of
mapping dicts.
"""
def __init__(self, make, args=(), name=None, tmpl=None, sep=''):
super(mappinggenerator, self).__init__(name, tmpl, sep)
self._make = make
self._args = args
def itermaps(self, context):
return self._make(context, *self._args)
def tobool(self, context, mapping):
return _nonempty(self.itermaps(context))
class mappinglist(_mappingsequence):
"""Wrapper for list of template mappings"""
def __init__(self, mappings, name=None, tmpl=None, sep=''):
super(mappinglist, self).__init__(name, tmpl, sep)
self._mappings = mappings
def itermaps(self, context):
return iter(self._mappings)
def tobool(self, context, mapping):
return bool(self._mappings)
class mappedgenerator(wrapped):
"""Wrapper for generator of strings which acts as a list
The function ``make(context, *args)`` should return a generator of
byte strings, or a generator of (possibly nested) generators of byte
strings (i.e. a generator for a list of byte strings.)
"""
def __init__(self, make, args=()):
self._make = make
self._args = args
def contains(self, context, mapping, item):
item = stringify(context, mapping, item)
return item in self.tovalue(context, mapping)
def _gen(self, context):
return self._make(context, *self._args)
def getmember(self, context, mapping, key):
raise error.ParseError(_('not a dictionary'))
def getmin(self, context, mapping):
return self._getby(context, mapping, min)
def getmax(self, context, mapping):
return self._getby(context, mapping, max)
def _getby(self, context, mapping, func):
xs = self.tovalue(context, mapping)
if not xs:
raise error.ParseError(_('empty sequence'))
return func(xs)
@staticmethod
def _filteredgen(context, mapping, make, args, select):
for x in make(context, *args):
s = stringify(context, mapping, x)
if select(wrappedbytes(s)):
yield s
def filter(self, context, mapping, select):
args = (mapping, self._make, self._args, select)
return mappedgenerator(self._filteredgen, args)
def itermaps(self, context):
raise error.ParseError(_('list of strings is not mappable'))
def join(self, context, mapping, sep):
return joinitems(self._gen(context), sep)
def show(self, context, mapping):
return self.join(context, mapping, '')
def tobool(self, context, mapping):
return _nonempty(self._gen(context))
def tovalue(self, context, mapping):
return [stringify(context, mapping, x) for x in self._gen(context)]
def hybriddict(data, key='key', value='value', fmt=None, gen=None):
"""Wrap data to support both dict-like and string-like operations"""
prefmt = pycompat.identity
if fmt is None:
fmt = '%s=%s'
prefmt = pycompat.bytestr
return hybrid(gen, data, lambda k: {key: k, value: data[k]},
lambda k: fmt % (prefmt(k), prefmt(data[k])))
def hybridlist(data, name, fmt=None, gen=None):
"""Wrap data to support both list-like and string-like operations"""
prefmt = pycompat.identity
if fmt is None:
fmt = '%s'
prefmt = pycompat.bytestr
return hybrid(gen, data, lambda x: {name: x}, lambda x: fmt % prefmt(x))
def compatdict(context, mapping, name, data, key='key', value='value',
fmt=None, plural=None, separator=' '):
"""Wrap data like hybriddict(), but also supports old-style list template
This exists for backward compatibility with the old-style template. Use
hybriddict() for new template keywords.
"""
c = [{key: k, value: v} for k, v in data.iteritems()]
f = _showcompatlist(context, mapping, name, c, plural, separator)
return hybriddict(data, key=key, value=value, fmt=fmt, gen=f)
def compatlist(context, mapping, name, data, element=None, fmt=None,
plural=None, separator=' '):
"""Wrap data like hybridlist(), but also supports old-style list template
This exists for backward compatibility with the old-style template. Use
hybridlist() for new template keywords.
"""
f = _showcompatlist(context, mapping, name, data, plural, separator)
return hybridlist(data, name=element or name, fmt=fmt, gen=f)
def _showcompatlist(context, mapping, name, values, plural=None, separator=' '):
"""Return a generator that renders old-style list template
name is name of key in template map.
values is list of strings or dicts.
plural is plural of name, if not simply name + 's'.
separator is used to join values as a string
expansion works like this, given name 'foo'.
if values is empty, expand 'no_foos'.
if 'foo' not in template map, return values as a string,
joined by 'separator'.
expand 'start_foos'.
for each value, expand 'foo'. if 'last_foo' in template
map, expand it instead of 'foo' for last key.
expand 'end_foos'.
"""
if not plural:
plural = name + 's'
if not values:
noname = 'no_' + plural
if context.preload(noname):
yield context.process(noname, mapping)
return
if not context.preload(name):
if isinstance(values[0], bytes):
yield separator.join(values)
else:
for v in values:
r = dict(v)
r.update(mapping)
yield r
return
startname = 'start_' + plural
if context.preload(startname):
yield context.process(startname, mapping)
def one(v, tag=name):
vmapping = {}
try:
vmapping.update(v)
# Python 2 raises ValueError if the type of v is wrong. Python
# 3 raises TypeError.
except (AttributeError, TypeError, ValueError):
try:
# Python 2 raises ValueError trying to destructure an e.g.
# bytes. Python 3 raises TypeError.
for a, b in v:
vmapping[a] = b
except (TypeError, ValueError):
vmapping[name] = v
vmapping = context.overlaymap(mapping, vmapping)
return context.process(tag, vmapping)
lastname = 'last_' + name
if context.preload(lastname):
last = values.pop()
else:
last = None
for v in values:
yield one(v)
if last is not None:
yield one(last, tag=lastname)
endname = 'end_' + plural
if context.preload(endname):
yield context.process(endname, mapping)
def flatten(context, mapping, thing):
"""Yield a single stream from a possibly nested set of iterators"""
if isinstance(thing, wrapped):
thing = thing.show(context, mapping)
if isinstance(thing, bytes):
yield thing
elif isinstance(thing, str):
# We can only hit this on Python 3, and it's here to guard
# against infinite recursion.
raise error.ProgrammingError('Mercurial IO including templates is done'
' with bytes, not strings, got %r' % thing)
elif thing is None:
pass
elif not util.safehasattr(thing, '__iter__'):
yield pycompat.bytestr(thing)
else:
for i in thing:
if isinstance(i, wrapped):
i = i.show(context, mapping)
if isinstance(i, bytes):
yield i
elif i is None:
pass
elif not util.safehasattr(i, '__iter__'):
yield pycompat.bytestr(i)
else:
for j in flatten(context, mapping, i):
yield j
def stringify(context, mapping, thing):
"""Turn values into bytes by converting into text and concatenating them"""
if isinstance(thing, bytes):
return thing # retain localstr to be round-tripped
return b''.join(flatten(context, mapping, thing))
def findsymbolicname(arg):
"""Find symbolic name for the given compiled expression; returns None
if nothing found reliably"""
while True:
func, data = arg
if func is runsymbol:
return data
elif func is runfilter:
arg = data[0]
else:
return None
def _nonempty(xiter):
try:
next(xiter)
return True
except StopIteration:
return False
def _unthunk(context, mapping, thing):
"""Evaluate a lazy byte string into value"""
if not isinstance(thing, types.GeneratorType):
return thing
return stringify(context, mapping, thing)
def evalrawexp(context, mapping, arg):
"""Evaluate given argument as a bare template object which may require
further processing (such as folding generator of strings)"""
func, data = arg
return func(context, mapping, data)
def evalwrapped(context, mapping, arg):
"""Evaluate given argument to wrapped object"""
thing = evalrawexp(context, mapping, arg)
return makewrapped(context, mapping, thing)
def makewrapped(context, mapping, thing):
"""Lift object to a wrapped type"""
if isinstance(thing, wrapped):
return thing
thing = _unthunk(context, mapping, thing)
if isinstance(thing, bytes):
return wrappedbytes(thing)
return wrappedvalue(thing)
def evalfuncarg(context, mapping, arg):
"""Evaluate given argument as value type"""
return unwrapvalue(context, mapping, evalrawexp(context, mapping, arg))
def unwrapvalue(context, mapping, thing):
"""Move the inner value object out of the wrapper"""
if isinstance(thing, wrapped):
return thing.tovalue(context, mapping)
# evalrawexp() may return string, generator of strings or arbitrary object
# such as date tuple, but filter does not want generator.
return _unthunk(context, mapping, thing)
def evalboolean(context, mapping, arg):
"""Evaluate given argument as boolean, but also takes boolean literals"""
func, data = arg
if func is runsymbol:
thing = func(context, mapping, data, default=None)
if thing is None:
# not a template keyword, takes as a boolean literal
thing = stringutil.parsebool(data)
else:
thing = func(context, mapping, data)
return makewrapped(context, mapping, thing).tobool(context, mapping)
def evaldate(context, mapping, arg, err=None):
"""Evaluate given argument as a date tuple or a date string; returns
a (unixtime, offset) tuple"""
thing = evalrawexp(context, mapping, arg)
return unwrapdate(context, mapping, thing, err)
def unwrapdate(context, mapping, thing, err=None):
if isinstance(thing, date):
return thing.tovalue(context, mapping)
# TODO: update hgweb to not return bare tuple; then just stringify 'thing'
thing = unwrapvalue(context, mapping, thing)
try:
return dateutil.parsedate(thing)
except AttributeError:
raise error.ParseError(err or _('not a date tuple nor a string'))
except error.ParseError:
if not err:
raise
raise error.ParseError(err)
def evalinteger(context, mapping, arg, err=None):
thing = evalrawexp(context, mapping, arg)
return unwrapinteger(context, mapping, thing, err)
def unwrapinteger(context, mapping, thing, err=None):
thing = unwrapvalue(context, mapping, thing)
try:
return int(thing)
except (TypeError, ValueError):
raise error.ParseError(err or _('not an integer'))
def evalstring(context, mapping, arg):
return stringify(context, mapping, evalrawexp(context, mapping, arg))
def evalstringliteral(context, mapping, arg):
"""Evaluate given argument as string template, but returns symbol name
if it is unknown"""
func, data = arg
if func is runsymbol:
thing = func(context, mapping, data, default=data)
else:
thing = func(context, mapping, data)
return stringify(context, mapping, thing)
_unwrapfuncbytype = {
None: unwrapvalue,
bytes: stringify,
date: unwrapdate,
int: unwrapinteger,
}
def unwrapastype(context, mapping, thing, typ):
"""Move the inner value object out of the wrapper and coerce its type"""
try:
f = _unwrapfuncbytype[typ]
except KeyError:
raise error.ProgrammingError('invalid type specified: %r' % typ)
return f(context, mapping, thing)
def runinteger(context, mapping, data):
return int(data)
def runstring(context, mapping, data):
return data
def _recursivesymbolblocker(key):
def showrecursion(context, mapping):
raise error.Abort(_("recursive reference '%s' in template") % key)
showrecursion._requires = () # mark as new-style templatekw
return showrecursion
def runsymbol(context, mapping, key, default=''):
v = context.symbol(mapping, key)
if v is None:
# put poison to cut recursion. we can't move this to parsing phase
# because "x = {x}" is allowed if "x" is a keyword. (issue4758)
safemapping = mapping.copy()
safemapping[key] = _recursivesymbolblocker(key)
try:
v = context.process(key, safemapping)
except TemplateNotFound:
v = default
if callable(v) and getattr(v, '_requires', None) is None:
# old templatekw: expand all keywords and resources
# (TODO: drop support for old-style functions. 'f._requires = ()'
# can be removed.)
props = {k: context._resources.lookup(context, mapping, k)
for k in context._resources.knownkeys()}
# pass context to _showcompatlist() through templatekw._showlist()
props['templ'] = context
props.update(mapping)
ui = props.get('ui')
if ui:
ui.deprecwarn("old-style template keyword '%s'" % key, '4.8')
return v(**pycompat.strkwargs(props))
if callable(v):
# new templatekw
try:
return v(context, mapping)
except ResourceUnavailable:
# unsupported keyword is mapped to empty just like unknown keyword
return None
return v
def runtemplate(context, mapping, template):
for arg in template:
yield evalrawexp(context, mapping, arg)
def runfilter(context, mapping, data):
arg, filt = data
thing = evalrawexp(context, mapping, arg)
intype = getattr(filt, '_intype', None)
try:
thing = unwrapastype(context, mapping, thing, intype)
return filt(thing)
except error.ParseError as e:
raise error.ParseError(bytes(e), hint=_formatfiltererror(arg, filt))
def _formatfiltererror(arg, filt):
fn = pycompat.sysbytes(filt.__name__)
sym = findsymbolicname(arg)
if not sym:
return _("incompatible use of template filter '%s'") % fn
return (_("template filter '%s' is not compatible with keyword '%s'")
% (fn, sym))
def _iteroverlaymaps(context, origmapping, newmappings):
"""Generate combined mappings from the original mapping and an iterable
of partial mappings to override the original"""
for i, nm in enumerate(newmappings):
lm = context.overlaymap(origmapping, nm)
lm['index'] = i
yield lm
def _applymap(context, mapping, d, darg, targ):
try:
diter = d.itermaps(context)
except error.ParseError as err:
sym = findsymbolicname(darg)
if not sym:
raise
hint = _("keyword '%s' does not support map operation") % sym
raise error.ParseError(bytes(err), hint=hint)
for lm in _iteroverlaymaps(context, mapping, diter):
yield evalrawexp(context, lm, targ)
def runmap(context, mapping, data):
darg, targ = data
d = evalwrapped(context, mapping, darg)
return mappedgenerator(_applymap, args=(mapping, d, darg, targ))
def runmember(context, mapping, data):
darg, memb = data
d = evalwrapped(context, mapping, darg)
if isinstance(d, mappable):
lm = context.overlaymap(mapping, d.tomap(context))
return runsymbol(context, lm, memb)
try:
return d.getmember(context, mapping, memb)
except error.ParseError as err:
sym = findsymbolicname(darg)
if not sym:
raise
hint = _("keyword '%s' does not support member operation") % sym
raise error.ParseError(bytes(err), hint=hint)
def runnegate(context, mapping, data):
data = evalinteger(context, mapping, data,
_('negation needs an integer argument'))
return -data
def runarithmetic(context, mapping, data):
func, left, right = data
left = evalinteger(context, mapping, left,
_('arithmetic only defined on integers'))
right = evalinteger(context, mapping, right,
_('arithmetic only defined on integers'))
try:
return func(left, right)
except ZeroDivisionError:
raise error.Abort(_('division by zero is not defined'))
def joinitems(itemiter, sep):
"""Join items with the separator; Returns generator of bytes"""
first = True
for x in itemiter:
if first:
first = False
elif sep:
yield sep
yield x