def __call__(self, stream, directives, ctxt, **vars):
info = ctxt._choice_stack and ctxt._choice_stack[-1]
if not info:
raise TemplateRuntimeError('"when" directives can only be used '
'inside a "choose" directive',
self.filename, *stream.next()[2][1:])
if info[0]:
return []
if not self.expr and not info[1]:
raise TemplateRuntimeError('either "choose" or "when" directive '
'must have a test expression',
self.filename, *stream.next()[2][1:])
if info[1]:
value = info[2]
if self.expr:
matched = value == _eval_expr(self.expr, ctxt, vars)
else:
matched = bool(value)
else:
matched = bool(_eval_expr(self.expr, ctxt, vars))
info[0] = matched
if not matched:
return []
return _apply_directives(stream, directives, ctxt, vars)
def _simplify_stream(stream, ctxt, vars):
# consumes stream, send a list
parts = []
for idx, (kind, data, pos) in enumerate(stream):
if kind is TEXT:
parts.append(data)
elif kind is EXPR:
value = _eval_expr(data, ctxt, vars)
if hasattr(value, '__html__'):
value = _unpack(value)
if hasattr(value, '__next__') or hasattr(value, 'next'):
while hasattr(value, '__next__') or hasattr(value, 'next'):
value = list(value)
value = _simplify_stream(value, ctxt, vars)
if not isinstance(value, text_type):
stream[idx:idx + 1] = value
else:
stream[idx] = (TEXT, value, pos)
elif isinstance(value, bytestring_type):
value = value.decode('utf8', 'replace')
elif not isinstance(value, text_type):
value = text_type(value)
parts.append(value)
else:
return stream
return u''.join(parts)
def __call__(self, stream, directives, ctxt, **vars):
info = [False, bool(self.expr), None]
if self.expr:
info[2] = _eval_expr(self.expr, ctxt, vars)
ctxt._choice_stack.append(info)
for event in _apply_directives(stream, directives, ctxt, vars):
yield event
ctxt._choice_stack.pop()
def process(self, stream, directives, ctxt, vars):
if self.bind is not None:
bind = self.bind
elif self.expr is None:
bind = None
else:
bind = _eval_expr(self.expr, ctxt, vars)
return _rewrite_stream(stream, directives, ctxt, vars, bind)
def process(self, stream, directives, ctxt, vars):
if self.bind is not None:
bind = self.bind
elif self.expr is None:
bind = None
else:
bind = _eval_expr(self.expr, ctxt, vars)
return _rewrite_stream(stream, directives, ctxt, vars, bind)
def _generate():
if _eval_expr(self.expr, ctxt, **vars):
stream.next() # skip start tag
previous = stream.next()
for event in stream:
yield previous
previous = event
else:
for event in stream:
yield event
def __call__(self, stream, directives, ctxt, **vars):
frame = {}
ctxt.push(frame)
for targets, expr in self.vars:
value = _eval_expr(expr, ctxt, vars)
for assign in targets:
assign(frame, value)
for event in _apply_directives(stream, directives, ctxt, vars):
yield event
ctxt.pop()
def _generate():
if not self.expr or _eval_expr(self.expr, ctxt, vars):
next(stream) # skip start tag
previous = next(stream)
for event in stream:
yield previous
previous = event
else:
for event in stream:
yield event
def __call__(self, stream, directives, ctxt, **vars):
frame = {}
ctxt.push(frame)
for targets, expr in self.vars:
value = _eval_expr(expr, ctxt, vars)
for assign in targets:
assign(frame, value)
for event in _apply_directives(stream, directives, ctxt, vars):
yield event
ctxt.pop()
def _generate():
if not self.expr or _eval_expr(self.expr, ctxt, vars):
stream.next() # skip start tag
previous = stream.next()
for event in stream:
yield previous
previous = event
else:
for event in stream:
yield event
def __call__(self, stream, directives, ctxt, **vars):
iterable = _eval_expr(self.expr, ctxt, vars)
if iterable is None:
return
assign = self.assign
scope = {}
stream = list(stream)
for item in iterable:
assign(scope, item)
ctxt.push(scope)
for event in _apply_directives(stream, directives, ctxt, vars):
yield event
ctxt.pop()
def __call__(self, stream, directives, ctxt, **vars):
iterable = _eval_expr(self.expr, ctxt, vars)
if iterable is None:
return
assign = self.assign
scope = {}
stream = list(stream)
for item in iterable:
assign(scope, item)
ctxt.push(scope)
for event in _apply_directives(stream, directives, ctxt, vars):
yield event
ctxt.pop()
def inject(self, mapping, ctxt, vars):
"""Inject the translated key and interpolated value into *mapping*."""
raw = self.raw_value
if raw.__class__ is unicode:
final_value = raw
else:
parts = []
for kind, value, pos in raw:
if kind is TEXT:
parts.append(value)
else:
value = _eval_expr(value, ctxt, vars)
parts.append(unicode(value))
final_value = u''.join(parts)
mapping[_to_context.get(self._name, self._name)] = final_value
def inject(self, mapping, ctxt, vars):
"""Inject the translated key and interpolated value into *mapping*."""
raw = self.raw_value
if raw.__class__ is unicode:
final_value = raw
else:
parts = []
for kind, value, pos in raw:
if kind is TEXT:
parts.append(value)
else:
value = _eval_expr(value, ctxt, vars)
parts.append(unicode(value))
final_value = u''.join(parts)
mapping[_to_context.get(self._name, self._name)] = final_value
def _generate():
kind, (tag, attrib), pos = stream.next()
attrs = _eval_expr(self.expr, ctxt, vars)
if attrs:
if isinstance(attrs, Stream):
try:
attrs = iter(attrs).next()
except StopIteration:
attrs = []
elif not isinstance(attrs, list): # assume it's a dict
attrs = attrs.items()
attrib |= [(QName(n), v is not None and unicode(v).strip()
or None) for n, v in attrs]
yield kind, (tag, attrib), pos
for event in stream:
yield event
def _generate():
kind, (tag, attrib), pos = stream.next()
attrs = _eval_expr(self.expr, ctxt, vars)
if attrs:
if isinstance(attrs, Stream):
try:
attrs = iter(attrs).next()
except StopIteration:
attrs = []
elif not isinstance(attrs, list): # assume it's a dict
attrs = attrs.items()
attrib -= [name for name, val in attrs if val is None]
attrib |= [(QName(name), unicode(val).strip()) for name, val
in attrs if val is not None]
yield kind, (tag, attrib), pos
for event in stream:
yield event
def _generate():
kind, (tag, attrib), pos = stream.next()
attrs = _eval_expr(self.expr, ctxt, **vars)
if attrs:
if isinstance(attrs, Stream):
try:
attrs = iter(attrs).next()
except StopIteration:
attrs = []
elif not isinstance(attrs, list): # assume it's a dict
attrs = attrs.items()
attrib -= [name for name, val in attrs if val is None]
attrib |= [(QName(name), unicode(val).strip())
for name, val in attrs if val is not None]
yield kind, (tag, attrib), pos
for event in stream:
yield event
def _generate():
kind, (tag, attrib), pos = next(stream)
attrs = _eval_expr(self.expr, ctxt, vars)
if attrs:
if isinstance(attrs, Stream):
try:
attrs = next(iter(attrs))
except StopIteration:
attrs = []
elif not isinstance(attrs, list): # assume it's a dict
attrs = list(attrs.items())
attrib |= [
(QName(n), v is not None and str(v).strip() or None)
for n, v in attrs
]
yield kind, (tag, attrib), pos
for event in stream:
yield event
def process(self, stream, directives, ctxt, vars):
try:
render_context = ctxt['flatland_render_context']
except KeyError:
ctxt['flatland_render_context'] = render_context = Context()
if 'filters' not in self.attributes:
attrs = self.attributes
else:
attrs = self.attributes.copy()
attrs['filters'] = _eval_expr(Expression(attrs['filters']),
ctxt, vars)
render_context.push()
render_context.update(attrs)
assert not directives
for event in stream:
yield event
render_context.pop()
def process(self, stream, directives, ctxt, vars):
try:
render_context = ctxt['flatland_render_context']
except KeyError:
ctxt['flatland_render_context'] = render_context = Context()
if 'filters' not in self.attributes:
attrs = self.attributes
else:
attrs = self.attributes.copy()
attrs['filters'] = _eval_expr(Expression(attrs['filters']), ctxt,
vars)
render_context.push()
render_context.update(attrs)
assert not directives
for event in stream:
yield event
render_context.pop()
def function(*args, **kwargs):
scope = {}
args = list(args) # make mutable
for name in self.args:
if args:
scope[name] = args.pop(0)
else:
if name in kwargs:
val = kwargs.pop(name)
else:
val = _eval_expr(self.defaults.get(name), ctxt, vars)
scope[name] = val
if not self.star_args is None:
scope[self.star_args] = args
if not self.dstar_args is None:
scope[self.dstar_args] = kwargs
ctxt.push(scope)
for event in _apply_directives(stream, directives, ctxt, vars):
yield event
ctxt.pop()
def function(*args, **kwargs):
scope = {}
args = list(args) # make mutable
for name in self.args:
if args:
scope[name] = args.pop(0)
else:
if name in kwargs:
val = kwargs.pop(name)
else:
val = _eval_expr(self.defaults.get(name), ctxt, vars)
scope[name] = val
if not self.star_args is None:
scope[self.star_args] = args
if not self.dstar_args is None:
scope[self.dstar_args] = kwargs
ctxt.push(scope)
for event in _apply_directives(stream, directives, ctxt, vars):
yield event
ctxt.pop()
def _simplify_stream(stream, ctxt, vars):
# consumes stream, send a list
parts = []
for idx, (kind, data, pos) in enumerate(stream):
if kind is TEXT:
parts.append(data)
elif kind is EXPR:
value = _eval_expr(data, ctxt, vars)
if hasattr(value, '__html__'):
value = value.__html__()
if hasattr(value, '__next__') or hasattr(value, 'next'):
while hasattr(value, '__next__') or hasattr(value, 'next'):
value = list(value)
value = _simplify_stream(value, ctxt, vars)
if not isinstance(value, unicode):
stream[idx:idx + 1] = value
else:
stream[idx] = (TEXT, value, pos)
elif not isinstance(value, unicode):
value = unicode(value)
parts.append(value)
else:
return stream
return u''.join(parts)
def __call__(self, stream, directives, ctxt, **vars):
value = _eval_expr(self.expr, ctxt, vars)
if value:
return _apply_directives(stream, directives, ctxt, vars)
return []
def __call__(self, stream, directives, ctxt, **vars):
value = _eval_expr(self.expr, ctxt, vars)
if value:
return _apply_directives(stream, directives, ctxt, vars)
return []
