1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
|
# -*- coding: utf8 -*-
"""
.. module:: lesscpy.plib.block
:synopsis: Block parse node.
Copyright (c)
See LICENSE for details.
.. moduleauthor:: Johann T. Mariusson <jtm@robot.is>
"""
from .node import Node
from lesscpy.lessc import utility
from lesscpy.plib.identifier import Identifier
class Block(Node):
""" Block node. Represents one parse-block.
Can contain property nodes or other block nodes.
identifier {
propertys
inner blocks
}
"""
def parse(self, scope):
"""Parse block node.
args:
scope (Scope): Current scope
raises:
SyntaxError
returns:
self, or a list of new blocks if media queries need to be rotated
"""
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 = []
# Because media queries need to be at the root in CSS, we rotate them
# up the parse tree. More specifically, in a situation like this where
# the current node is .foo:
#
# .foo {
# @media print {
# /* ... */
# }
# .bar {
# /* ... */
# }
# }
#
# The media query is rotated out after splitting the node, resulting in
# this tree:
#
# @media print {
# .foo {
# /* ... */
# }
# }
# .foo {
# .bar {
# /* ... */
# }
# }
#
# New media queries are returned as siblings of self. If .foo is a
# media query itself, conditions are merged. This process is recursive
# so that media queries bubble up and split nodes along the way.
inner_media_queries = []
sibling_media_queries = []
for p in inner:
if not isinstance(p, Block):
self.parsed.append(p)
# TODO: By separating in two lists (inner and inner_media_queries),
# we change the final order of declarations.
elif p.tokens[1] is not None and p.name.tokens[0] == '@media':
inner_media_queries.append(p)
else:
self.inner.append(p)
for mb in inner_media_queries:
# If the current node is also a media query, create a merged media
# query for each inner media query.
if self.name.tokens[0] == '@media':
part_a = self.name.tokens[2:][0][0][0]
part_b = mb.name.tokens[2:][0]
cond = [
'@media', ' ', [
part_a, (' ', 'and', ' '),
part_b
]
]
# TODO: mb.parsed + mb.inner reorders things again
mb = Block([Identifier(cond), mb.parsed + mb.inner]).parse(scope)
sibling_media_queries += mb
for block in mb:
scope.add_block(block)
# Otherwise, rotate inner media queries out of self.
else:
cbs = Block([self.tokens[0], mb.parsed + mb.inner]).parse(scope)
for cb in cbs:
# Replace inner block contents with new block
new_mb = Block([mb.tokens[0], [cb]]).parse(scope)
sibling_media_queries += new_mb
for block in new_mb:
scope.add_block(block)
scope.real.pop()
scope.pop()
if self.inner or self.parsed:
return [self] + sibling_media_queries
else:
return sibling_media_queries
else:
return [self]
def raw(self, clean=False):
"""Raw block name
args:
clean (bool): clean name
returns:
str
"""
try:
return self.tokens[0].raw(clean)
except (AttributeError, TypeError):
pass
def fmt(self, fills):
"""Format block (CSS)
args:
fills (dict): Fill elements
returns:
str (CSS)
"""
f = "%(identifier)s%(ws)s{%(nl)s%(proplist)s}%(eb)s"
out = []
name = self.name.fmt(fills)
if self.parsed and any(
p for p in self.parsed
if str(type(p)) != "<class 'lesscpy.plib.variable.Variable'>"):
fills.update({
'identifier':
name,
'proplist':
''.join([p.fmt(fills) for p in self.parsed if p]),
})
out.append(f % fills)
if hasattr(self, 'inner'):
if self.name.subparse and len(self.inner) > 0: # @media
inner = ''.join([p.fmt(fills) for p in self.inner])
inner = inner.replace(fills['nl'],
fills['nl'] + fills['tab']).rstrip(
fills['tab'])
if not fills['nl']:
inner = inner.strip()
fills.update({
'identifier': name,
'proplist': fills['tab'] + inner
})
out.append(f % fills)
else:
out.append(''.join([p.fmt(fills) for p in self.inner]))
return ''.join(out)
def copy(self):
""" Return a full copy of self
returns: Block object
"""
name, inner = self.tokens
if inner:
inner = [u.copy() if u else u for u in inner]
if name:
name = name.copy()
return Block([name, inner], 0)
def copy_inner(self, scope):
"""Copy block contents (properties, inner blocks).
Renames inner block from current scope.
Used for mixins.
args:
scope (Scope): Current scope
returns:
list (block contents)
"""
if self.tokens[1]:
tokens = [u.copy() if u else u for u in self.tokens[1]]
out = [p for p in tokens if p]
utility.rename(out, scope, Block)
return out
return None
|
