def parse(self, scope):
"""Parse node
args:
scope (Scope): current scope
raises:
SyntaxError
returns:
self
"""
self.name, args, self.guards = self.tokens[0]
self.args = [a for a in utility.flatten(args) if a]
self.body = Block([None, self.tokens[1]], 0)
self.vars = list(utility.flatten([list(v.values()) for v in [s["__variables__"] for s in scope]]))
return self
def process(self, tokens, scope):
""" Process tokenslist, flattening and parsing it
args:
tokens (list): tokenlist
scope (Scope): Current scope
returns:
list
"""
while True:
tokens = list(utility.flatten(tokens))
done = True
if any(t for t in tokens if hasattr(t, 'parse')):
tokens = [
t.parse(scope) if hasattr(t, 'parse') else t
for t in tokens
]
done = False
if any(
t for t in tokens
if (utility.is_variable(t)) or str(type(t)) ==
"<class 'lesscpy.plib.variable.Variable'>"):
tokens = self.replace_variables(tokens, scope)
done = False
if done:
break
return tokens
def parse(self, scope):
"""Parse node
args:
scope (Scope): current scope
raises:
SyntaxError
returns:
self
"""
self.name, args, self.guards = self.tokens[0]
self.args = [a for a in utility.flatten(args) if a]
self.body = Block([None, self.tokens[1]], 0)
self.vars = list(
utility.flatten([
list(v.values()) for v in [s['__variables__'] for s in scope]
]))
return self
def parse(self, scope):
"""Parse node. Block identifiers are stored as
strings with spaces replaced with ?
args:
scope (Scope): Current scope
raises:
SyntaxError
returns:
self
"""
names = []
name = []
self._subp = (
'@media', '@keyframes',
'@-moz-keyframes', '@-webkit-keyframes',
'@-ms-keyframes'
)
if self.tokens and hasattr(self.tokens, 'parse'):
self.tokens = list(utility.flatten([id.split() + [',']
for id in self.tokens.parse(scope).split(',')]))
self.tokens.pop()
if self.tokens and self.tokens[0] in self._subp:
name = list(utility.flatten(self.tokens))
self.subparse = True
else:
self.subparse = False
for n in utility.flatten(self.tokens):
if n == '*':
name.append('* ')
elif n in '>+~':
if name and name[-1] == ' ':
name.pop()
name.append('?%s?' % n)
elif n == ',':
names.append(name)
name = []
else:
name.append(n)
names.append(name)
parsed = self.root(scope, names) if scope else names
self.parsed = [[i for i, j in utility.pairwise(part)
if i != ' ' or (j and '?' not in j)]
for part in parsed]
return self
def swap(self, var):
""" Replace variable
args:
var (str): variable
raises:
SyntaxError
returns:
str
"""
var = self.scope.swap('@' + var)
var = ''.join(utility.flatten(var))
return var.strip("\"'")
def parse(self, scope):
"""Parse node
args:
scope (Scope): current scope
raises:
SyntaxError
returns:
self
"""
self.name, args, self.guards = self.tokens[0]
self.args = [a for a in utility.flatten(args) if a]
self.body = Block([None, self.tokens[1]], 0)
self.scope = copy.deepcopy(scope[-1])
return self
def parse(self, scope):
"""Parse node. Block identifiers are stored as
strings with spaces replaced with ?
args:
scope (Scope): Current scope
raises:
SyntaxError
returns:
self
"""
names = []
name = []
self._subp = ("@media", "@keyframes", "@-moz-keyframes", "@-webkit-keyframes", "@-ms-keyframes")
if self.tokens and hasattr(self.tokens, "parse"):
self.tokens = list(utility.flatten([id.split() + [","] for id in self.tokens.parse(scope).split(",")]))
self.tokens.pop()
if self.tokens and self.tokens[0] in self._subp:
name = list(utility.flatten(self.tokens))
self.subparse = True
else:
self.subparse = False
for n in utility.flatten(self.tokens):
if n == "*":
name.append("* ")
elif n in ">+~":
if name and name[-1] == " ":
name.pop()
name.append("?%s?" % n)
elif n == ",":
names.append(name)
name = []
else:
name.append(n)
names.append(name)
parsed = self.root(scope, names) if scope else names
self.parsed = [[i for i, j in utility.pairwise(part) if i != " " or (j and "?" not in j)] for part in parsed]
return self
def parse(self, scope):
"""Parse node
args:
scope (Scope): current scope
raises:
SyntaxError
returns:
self
"""
self.parsed = list(utility.flatten(self.tokens))
if self.parsed[0] == '@import':
if len(self.parsed) > 4:
# Media @import
self.parsed.insert(3, ' ')
return self
def parse(self, scope):
"""Parse node
args:
scope (Scope): current scope
raises:
SyntaxError
returns:
self
"""
self.parsed = list(utility.flatten(self.tokens))
if self.parsed[0] == '@import':
if len(self.parsed) > 4:
# Media @import
self.parsed.insert(3, ' ')
return self
def parse(self, scope):
"""Parse block node.
args:
scope (Scope): Current scope
raises:
SyntaxError
returns:
self
"""
if not self.parsed:
scope.push()
self.name, inner = self.tokens
scope.current = self.name
if not self.name.parsed:
self.name.parse(scope)
if not inner:
inner = []
inner = list(utility.flatten([p.parse(scope) for p in inner if p]))
self.parsed = [p for p in inner if p and type(p) is not Block]
self.inner = [p for p in inner if p and type(p) is Block]
scope.pop()
return self
def parse(self, scope):
"""Parse block node.
args:
scope (Scope): Current scope
raises:
SyntaxError
returns:
self
"""
if not self.parsed:
scope.push()
self.name, inner = self.tokens
scope.current = self.name
scope.real.append(self.name)
if not self.name.parsed:
self.name.parse(scope)
if not inner:
inner = []
inner = list(utility.flatten([p.parse(scope) for p in inner if p]))
self.parsed = [p for p in inner if p and not isinstance(p, Block)]
self.inner = [p for p in inner if p and isinstance(p, Block)]
scope.real.pop()
scope.pop()
return self
def process(self, tokens, scope):
""" Process tokenslist, flattening and parsing it
args:
tokens (list): tokenlist
scope (Scope): Current scope
returns:
list
"""
while True:
tokens = list(utility.flatten(tokens))
done = True
if any(t for t in tokens if hasattr(t, 'parse')):
tokens = [
t.parse(scope) if hasattr(t, 'parse') else t
for t in tokens
]
done = False
if any(t for t in tokens if (utility.is_variable(t)) or str(type(
t)) == "<class 'lesscpy.plib.variable.Variable'>"):
tokens = self.replace_variables(tokens, scope)
done = False
if done:
break
return tokens
def parse(self, scope):
"""Parse node. Block identifiers are stored as
strings with spaces replaced with ?
args:
scope (Scope): Current scope
raises:
SyntaxError
returns:
self
"""
names = []
name = []
self._subp = (
'@media', '@keyframes',
'@-moz-keyframes', '@-webkit-keyframes',
'@-ms-keyframes'
)
if self.tokens and hasattr(self.tokens, 'parse'):
self.tokens = list(utility.flatten([id.split() + [',']
for id in self.tokens.parse(scope).split(',')]))
self.tokens.pop()
if self.tokens and any(hasattr(t, 'parse') for t in self.tokens):
tmp_tokens = []
for t in self.tokens:
if hasattr(t, 'parse'):
tmp_tokens.append(t.parse(scope))
else:
tmp_tokens.append(t)
self.tokens = list(utility.flatten(tmp_tokens))
if self.tokens and self.tokens[0] in self._subp:
name = list(utility.flatten(self.tokens))
self.subparse = True
else:
self.subparse = False
for n in utility.flatten(self.tokens):
if n == '*':
name.append('* ')
elif n in '>+~':
if name and name[-1] == ' ':
name.pop()
name.append('?%s?' % n)
elif n == ',':
names.append(name)
name = []
else:
name.append(n)
names.append(name)
parsed = self.root(scope, names) if scope else names
# Interpolated selectors need another step, we have to replace variables. Avoid reserved words though
#
# Example: '.@{var}' results in [['.', '@{var}']]
# But: '@media print' results in [['@media', ' ', 'print']]
#
def replace_variables(tokens, scope):
return [scope.swap(t)
if (utility.is_variable(t) and not t in reserved.tokens)
else t
for t in tokens]
parsed = [list(utility.flatten(replace_variables(part, scope))) for part in parsed]
self.parsed = [[i for i, j in utility.pairwise(part)
if i != ' ' or (j and '?' not in j)]
for part in parsed]
return self
def parse(self, scope):
"""Parse block node.
args:
scope (Scope): Current scope
raises:
SyntaxError
returns:
self
"""
if not self.parsed:
scope.push()
self.name, inner = self.tokens
scope.current = self.name
scope.real.append(self.name)
if not self.name.parsed:
self.name.parse(scope)
if not inner:
inner = []
inner = list(utility.flatten([p.parse(scope) for p in inner if p]))
self.parsed = []
self.inner = []
if not hasattr(self, "inner_media_queries"):
self.inner_media_queries = []
for p in inner:
if p is not None:
if isinstance(p, Block):
if len(scope) == 2 and p.tokens[1] is not None:
p_is_mediaquery = p.name.tokens[0] == '@media'
# Inner block @media ... { ... } is a nested media
# query. But double-nested media queries have to be
# removed and marked as well. While parsing ".foo",
# both nested "@media print" and double-nested
# "@media all" will be handled as we have to
# re-arrange the scope and block layout quite a bit:
#
# .foo {
# @media print {
# color: blue;
# @media screen { font-size: 12em; }
# }
# }
#
# Expected result:
#
# @media print {
# .foo { color: blue; }
# }
# @media print and screen {
# .foo { font-size: 12 em; }
# }
append_list = []
reparse_p = False
for child in p.tokens[1]:
if isinstance(child, Block) and child.name.raw(
).startswith("@media"):
# Remove child from the nested media query, it will be re-added to
# the parent with 'merged' media query (see above example).
p.tokens[1].remove(child)
if p_is_mediaquery: # Media query inside a & block
# Double-nested media query found. We remove it from 'p' and add
# it to this block with a new 'name'.
reparse_p = True
part_a = p.name.tokens[2:][0][0][0]
part_b = child.name.tokens[2:][0][0]
new_ident_tokens = [
'@media', ' ',
[
part_a, (' ', 'and', ' '),
part_b
]
]
# Parse child again with new @media $BLA {} part
child.tokens[0] = Identifier(
new_ident_tokens)
child.parsed = None
child = child.parse(scope)
else:
child.block_name = p.name
append_list.append(child)
if reparse_p:
p.parsed = None
p = p.parse(scope)
if not p_is_mediaquery and not append_list:
self.inner.append(p)
else:
append_list.insert(
0, p
) # This media query should occur before it's children
for media_query in append_list:
self.inner_media_queries.append(
media_query)
# NOTE(saschpe): The code is not recursive but we hope that people
# wont use triple-nested media queries.
else:
self.inner.append(p)
else:
self.parsed.append(p)
if self.inner_media_queries:
# Nested media queries, we have to remove self from scope and
# push all nested @media ... {} blocks.
scope.remove_block(self, index=-2)
for mb in self.inner_media_queries:
# New inner block with current name and media block contents
if hasattr(mb, 'block_name'):
cb_name = mb.block_name
else:
cb_name = self.tokens[0]
cb = Block([cb_name, mb.tokens[1]]).parse(scope)
# Replace inner block contents with new block
new_mb = Block([mb.tokens[0], [cb]]).parse(scope)
self.inner.append(new_mb)
scope.add_block(new_mb)
scope.real.pop()
scope.pop()
return self
def expression(self):
"""Return str representation of expression
returns:
str
"""
return utility.flatten(self.tokens)
def parse(self, scope):
"""Parse node. Block identifiers are stored as
strings with spaces replaced with ?
args:
scope (Scope): Current scope
raises:
SyntaxError
returns:
self
"""
names = []
name = []
self._subp = ('@media', '@keyframes', '@-moz-keyframes',
'@-webkit-keyframes', '@-ms-keyframes')
if self.tokens and hasattr(self.tokens, 'parse'):
self.tokens = list(
utility.flatten([
id.split() + [',']
for id in self.tokens.parse(scope).split(',')
]))
self.tokens.pop()
if self.tokens and any(hasattr(t, 'parse') for t in self.tokens):
tmp_tokens = []
for t in self.tokens:
if hasattr(t, 'parse'):
tmp_tokens.append(t.parse(scope))
else:
tmp_tokens.append(t)
self.tokens = list(utility.flatten(tmp_tokens))
if self.tokens and self.tokens[0] in self._subp:
name = list(utility.flatten(self.tokens))
self.subparse = True
else:
self.subparse = False
for n in utility.flatten(self.tokens):
if n == '*':
name.append('* ')
elif n in '>+~':
if name and name[-1] == ' ':
name.pop()
name.append('?%s?' % n)
elif n == ',':
names.append(name)
name = []
else:
name.append(n)
names.append(name)
parsed = self.root(scope, names) if scope else names
# Interpolated selectors need another step, we have to replace variables. Avoid reserved words though
#
# Example: '.@{var}' results in [['.', '@{var}']]
# But: '@media print' results in [['@media', ' ', 'print']]
#
def replace_variables(tokens, scope):
return [
scope.swap(t) if
(utility.is_variable(t) and not t in reserved.tokens) else t
for t in tokens
]
parsed = [
list(utility.flatten(replace_variables(part, scope)))
for part in parsed
]
self.parsed = [[
i for i, j in utility.pairwise(part)
if i != ' ' or (j and '?' not in j)
] for part in parsed]
return self
def parse(self, scope):
"""Parse block node.
args:
scope (Scope): Current scope
raises:
SyntaxError
returns:
self
"""
if not self.parsed:
scope.push()
self.name, inner = self.tokens
scope.current = self.name
scope.real.append(self.name)
if not self.name.parsed:
self.name.parse(scope)
if not inner:
inner = []
inner = list(utility.flatten([p.parse(scope) for p in inner if p]))
self.parsed = []
self.inner = []
if not hasattr(self, "inner_media_queries"):
self.inner_media_queries = []
for p in inner:
if p is not None:
if isinstance(p, Block):
if (len(scope) == 2 and p.tokens[1] is not None):
p_is_mediaquery = p.name.tokens[0] == '@media'
# Inner block @media ... { ... } is a nested media
# query. But double-nested media queries have to be
# removed and marked as well. While parsing ".foo",
# both nested "@media print" and double-nested
# "@media all" will be handled as we have to
# re-arrange the scope and block layout quite a bit:
#
# .foo {
# @media print {
# color: blue;
# @media screen { font-size: 12em; }
# }
# }
#
# Expected result:
#
# @media print {
# .foo { color: blue; }
# }
# @media print and screen {
# .foo { font-size: 12 em; }
# }
append_list = []
reparse_p = False
for child in p.tokens[1]:
if isinstance(child, Block) and child.name.raw().startswith("@media"):
# Remove child from the nested media query, it will be re-added to
# the parent with 'merged' media query (see above example).
p.tokens[1].remove(child)
if p_is_mediaquery: # Media query inside a & block
# Double-nested media query found. We remove it from 'p' and add
# it to this block with a new 'name'.
reparse_p = True
part_a = p.name.tokens[2:][0][0][0]
part_b = child.name.tokens[2:][0][0]
new_ident_tokens = ['@media', ' ', [part_a, (' ', 'and', ' '), part_b]]
# Parse child again with new @media $BLA {} part
child.tokens[0] = Identifier(new_ident_tokens)
child.parsed = None
child = child.parse(scope)
else:
child.block_name = p.name
append_list.append(child)
if reparse_p:
p.parsed = None
p = p.parse(scope)
if not p_is_mediaquery and not append_list:
self.inner.append(p)
else:
append_list.insert(0, p) # This media query should occur before it's children
for media_query in append_list:
self.inner_media_queries.append(media_query)
# NOTE(saschpe): The code is not recursive but we hope that people
# wont use triple-nested media queries.
else:
self.inner.append(p)
else:
self.parsed.append(p)
if self.inner_media_queries:
# Nested media queries, we have to remove self from scope and
# push all nested @media ... {} blocks.
scope.remove_block(self, index=-2)
for mb in self.inner_media_queries:
# New inner block with current name and media block contents
if hasattr(mb, 'block_name'):
cb_name = mb.block_name
else:
cb_name = self.tokens[0]
cb = Block([cb_name, mb.tokens[1]]).parse(scope)
# Replace inner block contents with new block
new_mb = Block([mb.tokens[0], [cb]]).parse(scope)
self.inner.append(new_mb)
scope.add_block(new_mb)
scope.real.pop()
scope.pop()
return self
