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# python yapps2.py grammar.g grammar.py
################################################################################
## Grammar compiled using Yapps:
import re
from string import *
from yappsrt import *
class SassExpressionScanner(Scanner):
patterns = None
_patterns = [
('":"', ':'),
('[ \r\t\n]+', '[ \r\t\n]+'),
('COMMA', ','),
('LPAR', '\\(|\\['),
('RPAR', '\\)|\\]'),
('END', '$'),
('MUL', '[*]'),
('DIV', '/'),
('ADD', '[+]'),
('SUB', '-\\s'),
('SIGN', '-(?![a-zA-Z_])'),
('AND', '(?<![-\\w])and(?![-\\w])'),
('OR', '(?<![-\\w])or(?![-\\w])'),
('NOT', '(?<![-\\w])not(?![-\\w])'),
('NE', '!='),
('INV', '!'),
('EQ', '=='),
('LE', '<='),
('GE', '>='),
('LT', '<'),
('GT', '>'),
('STR', "'[^']*'"),
('QSTR', '"[^"]*"'),
('UNITS', '(?<!\\s)(?:[a-zA-Z]+|%)(?![-\\w])'),
('NUM', '(?:\\d+(?:\\.\\d*)?|\\.\\d+)'),
('COLOR', '#(?:[a-fA-F0-9]{6}|[a-fA-F0-9]{3})(?![a-fA-F0-9])'),
('VAR', '\\$[-a-zA-Z0-9_]+'),
('FNCT', '[-a-zA-Z_][-a-zA-Z0-9_]*(?=\\()'),
('ID', '[-a-zA-Z_][-a-zA-Z0-9_]*'),
('BANG_IMPORTANT', '!important'),
]
def __init__(self, input=None):
if hasattr(self, 'setup_patterns'):
self.setup_patterns(self._patterns)
elif self.patterns is None:
self.__class__.patterns = []
for t, p in self._patterns:
self.patterns.append((t, re.compile(p)))
super(SassExpressionScanner, self).__init__(None, ['[ \r\t\n]+'], input)
class SassExpression(Parser):
def goal(self):
expr_lst = self.expr_lst()
v = expr_lst
END = self._scan('END')
return v
def expr(self):
and_expr = self.and_expr()
v = and_expr
while self._peek(self.expr_rsts) == 'OR':
OR = self._scan('OR')
and_expr = self.and_expr()
v = AnyOp(v, and_expr)
return v
def and_expr(self):
not_expr = self.not_expr()
v = not_expr
while self._peek(self.and_expr_rsts) == 'AND':
AND = self._scan('AND')
not_expr = self.not_expr()
v = AllOp(v, not_expr)
return v
def not_expr(self):
_token_ = self._peek(self.not_expr_rsts)
if _token_ != 'NOT':
comparison = self.comparison()
return comparison
else: # == 'NOT'
NOT = self._scan('NOT')
not_expr = self.not_expr()
return NotOp(not_expr)
def comparison(self):
a_expr = self.a_expr()
v = a_expr
while self._peek(self.comparison_rsts) in self.comparison_chks:
_token_ = self._peek(self.comparison_chks)
if _token_ == 'LT':
LT = self._scan('LT')
a_expr = self.a_expr()
v = BinaryOp(operator.lt, v, a_expr)
elif _token_ == 'GT':
GT = self._scan('GT')
a_expr = self.a_expr()
v = BinaryOp(operator.gt, v, a_expr)
elif _token_ == 'LE':
LE = self._scan('LE')
a_expr = self.a_expr()
v = BinaryOp(operator.le, v, a_expr)
elif _token_ == 'GE':
GE = self._scan('GE')
a_expr = self.a_expr()
v = BinaryOp(operator.ge, v, a_expr)
elif _token_ == 'EQ':
EQ = self._scan('EQ')
a_expr = self.a_expr()
v = BinaryOp(operator.eq, v, a_expr)
else: # == 'NE'
NE = self._scan('NE')
a_expr = self.a_expr()
v = BinaryOp(operator.ne, v, a_expr)
return v
def a_expr(self):
m_expr = self.m_expr()
v = m_expr
while self._peek(self.a_expr_rsts) in self.a_expr_chks:
_token_ = self._peek(self.a_expr_chks)
if _token_ == 'ADD':
ADD = self._scan('ADD')
m_expr = self.m_expr()
v = BinaryOp(operator.add, v, m_expr)
else: # == 'SUB'
SUB = self._scan('SUB')
m_expr = self.m_expr()
v = BinaryOp(operator.sub, v, m_expr)
return v
def m_expr(self):
u_expr = self.u_expr()
v = u_expr
while self._peek(self.m_expr_rsts) in self.m_expr_chks:
_token_ = self._peek(self.m_expr_chks)
if _token_ == 'MUL':
MUL = self._scan('MUL')
u_expr = self.u_expr()
v = BinaryOp(operator.mul, v, u_expr)
else: # == 'DIV'
DIV = self._scan('DIV')
u_expr = self.u_expr()
v = BinaryOp(operator.truediv, v, u_expr)
return v
def u_expr(self):
_token_ = self._peek(self.u_expr_rsts)
if _token_ == 'SIGN':
SIGN = self._scan('SIGN')
u_expr = self.u_expr()
return UnaryOp(operator.neg, u_expr)
elif _token_ == 'ADD':
ADD = self._scan('ADD')
u_expr = self.u_expr()
return UnaryOp(operator.pos, u_expr)
else: # in self.u_expr_chks
atom = self.atom()
return atom
def atom(self):
_token_ = self._peek(self.u_expr_chks)
if _token_ == 'LPAR':
LPAR = self._scan('LPAR')
expr_lst = self.expr_lst()
RPAR = self._scan('RPAR')
return Parentheses(expr_lst)
elif _token_ == 'ID':
ID = self._scan('ID')
return Literal(parse_bareword(ID))
elif _token_ == 'BANG_IMPORTANT':
BANG_IMPORTANT = self._scan('BANG_IMPORTANT')
return Literal(String(BANG_IMPORTANT, quotes=None))
elif _token_ == 'FNCT':
FNCT = self._scan('FNCT')
v = ArgspecLiteral([])
LPAR = self._scan('LPAR')
if self._peek(self.atom_rsts) != 'RPAR':
argspec = self.argspec()
v = argspec
RPAR = self._scan('RPAR')
return CallOp(FNCT, v)
elif _token_ == 'NUM':
NUM = self._scan('NUM')
if self._peek(self.atom_rsts_) == 'UNITS':
UNITS = self._scan('UNITS')
return Literal(NumberValue(float(NUM), unit=UNITS.lower()))
return Literal(NumberValue(float(NUM)))
elif _token_ == 'STR':
STR = self._scan('STR')
return Literal(String(STR[1:-1], quotes="'"))
elif _token_ == 'QSTR':
QSTR = self._scan('QSTR')
return Literal(String(QSTR[1:-1], quotes='"'))
elif _token_ == 'COLOR':
COLOR = self._scan('COLOR')
return Literal(ColorValue(ParserValue(COLOR)))
else: # == 'VAR'
VAR = self._scan('VAR')
return Variable(VAR)
def argspec(self):
argspec_item = self.argspec_item()
v = [argspec_item]
while self._peek(self.argspec_rsts) == 'COMMA':
COMMA = self._scan('COMMA')
argspec_item = self.argspec_item()
v.append(argspec_item)
return ArgspecLiteral(v)
def argspec_item(self):
var = None
if self._peek(self.argspec_item_rsts) == 'VAR':
VAR = self._scan('VAR')
if self._peek(self.argspec_item_rsts_) == '":"':
self._scan('":"')
var = VAR
else: self._rewind()
expr_slst = self.expr_slst()
return (var, expr_slst)
def expr_lst(self):
expr_slst = self.expr_slst()
v = [expr_slst]
while self._peek(self.expr_lst_rsts) == 'COMMA':
COMMA = self._scan('COMMA')
expr_slst = self.expr_slst()
v.append(expr_slst)
return ListLiteral(v) if len(v) > 1 else v[0]
def expr_slst(self):
expr = self.expr()
v = [expr]
while self._peek(self.expr_slst_rsts) not in self.expr_lst_rsts:
expr = self.expr()
v.append(expr)
return ListLiteral(v, comma=False) if len(v) > 1 else v[0]
m_expr_chks = set(['MUL', 'DIV'])
comparison_rsts = set(['LPAR', 'QSTR', 'RPAR', 'BANG_IMPORTANT', 'LE', 'COLOR', 'NE', 'LT', 'NUM', 'COMMA', 'GT', 'END', 'SIGN', 'ADD', 'FNCT', 'STR', 'VAR', 'EQ', 'ID', 'AND', 'GE', 'NOT', 'OR'])
atom_rsts = set(['LPAR', 'BANG_IMPORTANT', 'COLOR', 'QSTR', 'SIGN', 'NOT', 'ADD', 'NUM', 'FNCT', 'STR', 'VAR', 'RPAR', 'ID'])
u_expr_chks = set(['LPAR', 'COLOR', 'QSTR', 'NUM', 'FNCT', 'STR', 'VAR', 'BANG_IMPORTANT', 'ID'])
m_expr_rsts = set(['LPAR', 'SUB', 'QSTR', 'RPAR', 'MUL', 'DIV', 'BANG_IMPORTANT', 'LE', 'COLOR', 'NE', 'LT', 'NUM', 'COMMA', 'GT', 'END', 'SIGN', 'GE', 'FNCT', 'STR', 'VAR', 'EQ', 'ID', 'AND', 'ADD', 'NOT', 'OR'])
argspec_item_rsts_ = set(['LPAR', 'COLOR', 'QSTR', 'SIGN', 'VAR', 'ADD', 'NUM', '":"', 'STR', 'NOT', 'BANG_IMPORTANT', 'ID', 'FNCT'])
expr_lst_rsts = set(['END', 'COMMA', 'RPAR'])
argspec_rsts = set(['COMMA', 'RPAR'])
and_expr_rsts = set(['AND', 'LPAR', 'BANG_IMPORTANT', 'END', 'COLOR', 'QSTR', 'SIGN', 'VAR', 'ADD', 'NUM', 'COMMA', 'FNCT', 'STR', 'NOT', 'ID', 'RPAR', 'OR'])
u_expr_rsts = set(['LPAR', 'COLOR', 'QSTR', 'SIGN', 'ADD', 'NUM', 'FNCT', 'STR', 'VAR', 'BANG_IMPORTANT', 'ID'])
expr_rsts = set(['LPAR', 'BANG_IMPORTANT', 'END', 'COLOR', 'QSTR', 'RPAR', 'VAR', 'ADD', 'NUM', 'COMMA', 'FNCT', 'STR', 'NOT', 'ID', 'SIGN', 'OR'])
not_expr_rsts = set(['LPAR', 'COLOR', 'QSTR', 'SIGN', 'VAR', 'ADD', 'NUM', 'FNCT', 'STR', 'NOT', 'BANG_IMPORTANT', 'ID'])
argspec_item_rsts = set(['LPAR', 'COLOR', 'QSTR', 'SIGN', 'NOT', 'ADD', 'NUM', 'FNCT', 'STR', 'VAR', 'BANG_IMPORTANT', 'ID'])
atom_rsts_ = set(['LPAR', 'SUB', 'QSTR', 'RPAR', 'VAR', 'MUL', 'DIV', 'BANG_IMPORTANT', 'LE', 'COLOR', 'NE', 'LT', 'NUM', 'COMMA', 'GT', 'END', 'SIGN', 'GE', 'FNCT', 'STR', 'UNITS', 'EQ', 'ID', 'AND', 'ADD', 'NOT', 'OR'])
comparison_chks = set(['GT', 'GE', 'NE', 'LT', 'LE', 'EQ'])
a_expr_chks = set(['ADD', 'SUB'])
a_expr_rsts = set(['LPAR', 'SUB', 'QSTR', 'RPAR', 'BANG_IMPORTANT', 'LE', 'COLOR', 'NE', 'LT', 'NUM', 'COMMA', 'GT', 'END', 'SIGN', 'GE', 'FNCT', 'STR', 'VAR', 'EQ', 'ID', 'AND', 'ADD', 'NOT', 'OR'])
expr_slst_rsts = set(['LPAR', 'BANG_IMPORTANT', 'END', 'COLOR', 'QSTR', 'RPAR', 'VAR', 'ADD', 'NUM', 'COMMA', 'FNCT', 'STR', 'NOT', 'SIGN', 'ID'])
### Grammar ends.
################################################################################
|
