def grammar(self):
if not self.bnf:
point = Literal( "." )
fnumber = Combine( Word( nums ) +
Optional( point + Optional( Word( nums ) ) )
)
ident = Word(alphas.lower()+"_", alphanums+"_")
plus = Literal( "+" )
minus = Literal( "-" )
mult = Literal( "*" )
# passiverate = Word('infty') | Word('T')
div = Literal( "/" )
lpar = Literal( "(" ).suppress()
rpar = Literal( ")" ).suppress()
addop = plus | minus
multop = mult | div
assign = Literal('=')
expop = Literal( "^" )
expr = Forward()
atom = Optional("-") + ( fnumber | ident + lpar + expr + rpar | ident).setParseAction(self._pushFirst ) | lpar + expr.suppress() + rpar
factor = Forward()
factor << atom + ZeroOrMore( ( expop + factor )
.setParseAction(self._pushFirst) )
term = factor + ZeroOrMore( ( multop + factor )
.setParseAction(self._pushFirst) )
expr << term + ZeroOrMore( ( addop + term )
.setParseAction(self._pushFirst ) )
bnf = (ident + assign).setParseAction(self._assignVar) + expr
self.bnf = bnf
return self.bnf
def grammar(self):
prefix_op = Literal('.')
parallel = Literal('|')
comm_op = Literal('||')
choice_op = Literal('+')
colon = Literal(':')
loca_sym = Literal('@').suppress()
lpar = Literal('(').suppress()
rpar = Literal(')').suppress()
pound = Literal('#').suppress()
slash = Literal('/')
# 8
lbra = Literal('{').suppress()
rbra = Literal('}').suppress()
define = Literal('=')
Ident = Word(alphas.upper(), alphanums + "_")
ident = Word(alphas.lower(), alphanums + "_")
pragma = Optional(pound + Literal('language') + colon + 'ras')
# pseudo uri: /a/s/s/s/s/ or /a/ or /a/s/s/s
puri = Combine(slash + ident + ZeroOrMore(slash + ident) + Optional(slash))
loca = loca_sym + puri
comm = Forward()
choice = Forward()
prefix = Forward()
process = ident | loca + lbra + choice + rbra | lpar + choice + rpar
prefix << Group(process + ZeroOrMore(prefix_op + prefix) )
choice << Group(prefix + ZeroOrMore(choice_op + prefix))
comm << Group(choice + ZeroOrMore(comm_op + comm ))
rmdef = Ident + define + loca+ lbra + comm + rbra
ras = pragma + rmdef
return ras
def parse_weak_order(s: str) -> list:
"""
Convert a string representing a weak order to a list of sets.
:param s: a string.
:return: a list of sets, where each set is an indifference class. The first set of the list contains the top
(= most liked) candidates, while the last set of the list contains the bottom (= most disliked) candidates.
>>> s = 'Alice ~ Bob ~ Catherine32 > me > you ~ us > them'
>>> parse_weak_order(s) == [{'Alice', 'Bob', 'Catherine32'}, {'me'}, {'you', 'us'}, {'them'}]
True
"""
# Build the parser
candidate = Word(alphas.upper() + alphas.lower() + nums + '_')
equiv_class = Group(candidate +
ZeroOrMore(Word('~').suppress() + candidate))
weak_preference = equiv_class + ZeroOrMore(
Word('>').suppress() + equiv_class)
empty_preference = ZeroOrMore(' ')
# if s = 'Jean ~ Titi ~ tata32 > me > you ~ us > them', then
# parsed = [['Jean', 'Titi', 'tata32'], ['me'], ['you', 'us'], ['them']]
try:
parsed = empty_preference.parseString(s, parseAll=True).asList()
except ParseException:
parsed = weak_preference.parseString(s, parseAll=True).asList()
# Final conversion to format [{'Jean', 'tata32', 'Titi'}, {'me'}, {'us', 'you'}, {'them'}]
return [NiceSet(s) for s in parsed]
def gramma():
## Tokens
point = Literal('.')
prefix_op = Literal('.')
choice_op = Literal('+')
parallel = Literal("||") | Literal("<>")
#ident = Word(alphas, alphanums+'_')
ratename = Word(alphas.lower(), alphanums + "_")
lpar = Literal('(').suppress()
rpar = Literal(')').suppress()
lsqpar = Literal('[').suppress()
rsqpar = Literal(']').suppress()
define = Literal('=')
semicol = Literal(';').suppress()
col = Literal(',').suppress()
number = Word(nums)
integer = number
floatnumber = Combine(integer + Optional(point + Optional(number)))
passiverate = Word('infty') | Word('T')
internalrate = Word('tau')
pound = Literal('#').suppress()
percent = Literal('%').suppress()
peparate = (ratename | floatnumber | internalrate
| passiverate).setParseAction(_check_var)
peparate_indef = floatnumber | internalrate | passiverate
sync = Word('<').suppress() + ratename + ZeroOrMore(col + ratename) + Word(
'>').suppress()
coop_op = (parallel | sync).setParseAction(_create_sync_set)
activity = (ratename + col + peparate).setParseAction(_create_activity)
procdef = (Word(alphas.upper(), alphanums + "_") +
Optional(lsqpar + peparate_indef +
rsqpar)).setParseAction(_create_procdef)
## RATES Definitions
ratedef = (Optional(percent) + ratename + define +
peparate_indef).setParseAction(assign_var) + semicol
prefix = Forward()
choice = Forward()
coop = Forward()
process = (activity
| procdef
| lpar + coop + rpar).setParseAction(_create_process)
prefix << (process +
ZeroOrMore(prefix_op + prefix)).setParseAction(_create_prefix)
choice << (prefix +
ZeroOrMore(choice_op + choice)).setParseAction(_create_choice)
coop << (choice + ZeroOrMore(coop_op + coop)).setParseAction(_create_coop)
rmdef = (Optional(pound) + procdef + define + coop +
semicol).setParseAction(_create_definition)
system_eq = Optional(pound) + coop
pepa = ZeroOrMore(ratedef) + ZeroOrMore(rmdef) + system_eq.setParseAction(
_create_system_equation)
pepacomment = '//' + restOfLine
pepa.ignore(pepacomment)
return pepa
def parser(filename=None):
"""
Generate a callable parser for each file. The filename is necessary to get better Error messages.
:param filename: Name of the file, on which the parser will be applied
:type filename: str
:return: A parser for the file on filename
"""
line_comment = Group(Suppress("--") + restOfLine + SkipTo(LineEnd()))("SingleLineComment")
block_comment = nestedExpr("{-", "-}")("MultiLineComment")
comment = Group(line_comment | block_comment)
module_name = Group(delimitedList(Word(alphas.upper(),alphas),"."))("Module Name")
module_exports = Group(Keyword("..") | Group(delimitedList(Word(printables, excludeChars=',)'))))("Module Exports")
module_declaration = Group(
Suppress("module").setFailAction(e.ModuleDeclarationMissingException(filename)) +
module_name +
Suppress("exposing") +
Suppress("(") +
module_exports+Suppress(")"))("Module Declaration")
LPAR, RPAR = map(Suppress, '()')
integer = Word(nums)
real = Optional(Word(nums)) + '.' + Word(nums)
expr = Forward()
operand = Optional("-") + (real | integer)
factor = operand | Group(LPAR + expr + RPAR)
term = factor + ZeroOrMore(oneOf('* /') + factor)
expr <<= term + ZeroOrMore(oneOf('+ -') + term)
function_name = Word(alphas.lower())
function_parameter = Word(alphas.upper()+alphas.lower())
function_parameters = ZeroOrMore(function_parameter)("Function Parameter")
function_body = expr
function_declaration = Group(function_name + function_parameters + Suppress("=") + function_body)\
("Function Declaration")
return module_declaration + ZeroOrMore(function_declaration | comment)("Body")
def gramma():
## Tokens
point = Literal('.')
prefix_op = Literal('.')
choice_op = Literal('+')
parallel = Literal("||") | Literal("<>")
#ident = Word(alphas, alphanums+'_')
ratename = Word(alphas.lower(),alphanums+"_")
lpar = Literal('(').suppress()
rpar = Literal(')').suppress()
lsqpar = Literal('[').suppress()
rsqpar = Literal(']').suppress()
define = Literal('=')
semicol = Literal(';').suppress()
col = Literal(',').suppress()
number = Word(nums)
integer = number
floatnumber = Combine( integer + Optional( point + Optional(number)))
passiverate = Word('infty') | Word('T')
internalrate = Word('tau')
pound = Literal('#').suppress()
percent = Literal('%').suppress()
peparate = (ratename | floatnumber | internalrate | passiverate).setParseAction(_check_var)
peparate_indef = floatnumber | internalrate | passiverate
sync = Word('<').suppress() + ratename + ZeroOrMore(col + ratename) + Word('>').suppress()
coop_op = (parallel | sync).setParseAction(_create_sync_set)
activity = (ratename + col + peparate).setParseAction(_create_activity)
procdef = (Word(alphas.upper(), alphanums+"_") + Optional(lsqpar + peparate_indef + rsqpar)).setParseAction(_create_procdef)
## RATES Definitions
ratedef = (Optional(percent)+ratename + define + peparate_indef).setParseAction(assign_var) + semicol
prefix = Forward()
choice = Forward()
coop = Forward()
process = ( activity
| procdef
| lpar + coop + rpar
).setParseAction(_create_process)
prefix << (process + ZeroOrMore(prefix_op + prefix)).setParseAction( _create_prefix)
choice << (prefix + ZeroOrMore(choice_op + choice)).setParseAction(_create_choice)
coop << (choice + ZeroOrMore(coop_op + coop)).setParseAction(_create_coop)
rmdef = (Optional(pound) + procdef + define + coop + semicol).setParseAction(_create_definition)
system_eq = Optional(pound) + coop
pepa = ZeroOrMore(ratedef) + ZeroOrMore(rmdef) + system_eq.setParseAction(_create_system_equation)
pepacomment = '//' + restOfLine
pepa.ignore(pepacomment)
return pepa
# http://www.antlr.org/grammar/ANTLR/ANTLRv3.g
# Tokens
EOL = Suppress(LineEnd()) # $
singleTextString = originalTextFor(ZeroOrMore(~EOL + (White(" \t") | Word(printables)))).leaveWhitespace()
XDIGIT = hexnums
INT = Word(nums)
ESC = Literal('\\') + (oneOf(list(r'nrtbf\">'+"'")) | ('u' + Word(hexnums, exact=4)) | Word(printables, exact=1))
LITERAL_CHAR = ESC | ~(Literal("'") | Literal('\\')) + Word(printables, exact=1)
CHAR_LITERAL = Suppress("'") + LITERAL_CHAR + Suppress("'")
STRING_LITERAL = Suppress("'") + Combine(OneOrMore(LITERAL_CHAR)) + Suppress("'")
DOUBLE_QUOTE_STRING_LITERAL = '"' + ZeroOrMore(LITERAL_CHAR) + '"'
DOUBLE_ANGLE_STRING_LITERAL = '<<' + ZeroOrMore(Word(printables, exact=1)) + '>>'
TOKEN_REF = Word(alphas.upper(), alphanums+'_')
RULE_REF = Word(alphas.lower(), alphanums+'_')
ACTION_ESC = (Suppress("\\") + Suppress("'")) | Suppress('\\"') | Suppress('\\') + (~(Literal("'") | Literal('"')) + Word(printables, exact=1))
ACTION_CHAR_LITERAL = Suppress("'") + (ACTION_ESC | ~(Literal('\\') | Literal("'")) + Word(printables, exact=1)) + Suppress("'")
ACTION_STRING_LITERAL = Suppress('"') + ZeroOrMore(ACTION_ESC | ~(Literal('\\') | Literal('"')) + Word(printables, exact=1)) + Suppress('"')
SRC = Suppress('src') + ACTION_STRING_LITERAL("file") + INT("line")
id = TOKEN_REF | RULE_REF
SL_COMMENT = Suppress('//') + Suppress('$ANTLR') + SRC | ZeroOrMore(~EOL + Word(printables)) + EOL
ML_COMMENT = cStyleComment
WS = OneOrMore(Suppress(' ') | Suppress('\t') | (Optional(Suppress('\r')) + Literal('\n')))
WS_LOOP = ZeroOrMore(SL_COMMENT | ML_COMMENT)
NESTED_ARG_ACTION = Forward()
NESTED_ARG_ACTION << Suppress('[') + ZeroOrMore(NESTED_ARG_ACTION | ACTION_STRING_LITERAL | ACTION_CHAR_LITERAL) + Suppress(']')
ARG_ACTION = NESTED_ARG_ACTION
NESTED_ACTION = Forward()
NESTED_ACTION << Suppress('{') + ZeroOrMore(NESTED_ACTION | SL_COMMENT | ML_COMMENT | ACTION_STRING_LITERAL | ACTION_CHAR_LITERAL) + Suppress('}')
ACTION = NESTED_ACTION + Optional('?')
from pyparsing import Word, Optional, OneOrMore, Group, ParseException, Regex
from pyparsing import alphas
atomicWeight = {
"O": 15.9994,
"H": 1.00794,
"Na": 22.9897,
"Cl": 35.4527,
"C": 12.0107,
}
digits = "0123456789"
# Version 1
element = Word(alphas.upper(), alphas.lower(), max=2)
# for stricter matching, use this Regex instead
# element = Regex("A[cglmrstu]|B[aehikr]?|C[adeflmorsu]?|D[bsy]|"
# "E[rsu]|F[emr]?|G[ade]|H[efgos]?|I[nr]?|Kr?|L[airu]|"
# "M[dgnot]|N[abdeiop]?|Os?|P[abdmortu]?|R[abefghnu]|"
# "S[bcegimnr]?|T[abcehilm]|U(u[bhopqst])?|V|W|Xe|Yb?|Z[nr]")
elementRef = Group(element + Optional(Word(digits), default="1"))
formula = OneOrMore(elementRef)
fn = lambda elemList: sum(atomicWeight[elem] * int(qty)
for elem, qty in elemList)
formula.runTests(
"""\
H2O
C6H5OH
NaCl
ZeroOrMore(~EOL + (White(" \t") | Word(printables)))).leaveWhitespace()
XDIGIT = hexnums
INT = Word(nums)
ESC = Literal('\\') + (oneOf(list(r'nrtbf\">' + "'")) |
('u' + Word(hexnums, exact=4))
| Word(printables, exact=1))
LITERAL_CHAR = ESC | ~(Literal("'") | Literal('\\')) + Word(printables,
exact=1)
CHAR_LITERAL = Suppress("'") + LITERAL_CHAR + Suppress("'")
STRING_LITERAL = Suppress("'") + Combine(
OneOrMore(LITERAL_CHAR)) + Suppress("'")
DOUBLE_QUOTE_STRING_LITERAL = '"' + ZeroOrMore(LITERAL_CHAR) + '"'
DOUBLE_ANGLE_STRING_LITERAL = '<<' + ZeroOrMore(Word(printables,
exact=1)) + '>>'
TOKEN_REF = Word(alphas.upper(), alphanums + '_')
RULE_REF = Word(alphas.lower(), alphanums + '_')
ACTION_ESC = (Suppress("\\") + Suppress("'")) | Suppress('\\"') | Suppress(
'\\') + (~(Literal("'") | Literal('"')) + Word(printables, exact=1))
ACTION_CHAR_LITERAL = Suppress("'") + (
ACTION_ESC | ~(Literal('\\') | Literal("'")) +
Word(printables, exact=1)) + Suppress("'")
ACTION_STRING_LITERAL = Suppress(
'"') + ZeroOrMore(ACTION_ESC | ~(Literal('\\') | Literal('"')) +
Word(printables, exact=1)) + Suppress('"')
SRC = Suppress('src') + ACTION_STRING_LITERAL("file") + INT("line")
id = TOKEN_REF | RULE_REF
SL_COMMENT = Suppress('//') + Suppress('$ANTLR') + SRC | ZeroOrMore(
~EOL + Word(printables)) + EOL
ML_COMMENT = cStyleComment
WS = OneOrMore(
Suppress(' ') | Suppress('\t')
#! /usr/bin/env python3
from collections import namedtuple
from pyparsing import (
alphanums, alphas, Combine, delimitedList, Forward, Group, infixNotation,
Keyword, oneOf, opAssoc, Optional, Suppress, Word, ParserElement)
from pyparsing import pyparsing_common as ppc
ParserElement.enablePackrat()
LPAR, RPAR, LBRAK, RBRAK, COMMA = map(Suppress, "()[],")
kws = oneOf("and or not id true false forall exists")
BUILTIN = oneOf("abs max min not")
VARNAME = Word(alphas.lower(), alphanums + "_").ignore(kws).ignore(BUILTIN)
TYPENAME = Word(alphas.upper(), alphanums + "_").ignore(kws).ignore(BUILTIN)
EXTERN = Combine(Suppress("_") + VARNAME).setParseAction(lambda toks: toks[0])
# AST nodes for ATLAS properties
EnvNode = namedtuple("Env", ["var", "offset"])
OfNode = namedtuple("Of", ["var", "offset", "agent"])
BinOp = namedtuple("BinOp", ["e1", "op", "e2"])
BuiltIn = namedtuple("BuiltIn", ["fn", "args"])
Nary = namedtuple("Nary", ["fn", "args"])
Quant = namedtuple("Quant", ["quantifier", "typename", "varname", "inner"])
Prop = namedtuple("Prop", ["modality", "quant"])
def pprint(node):
if isinstance(node, EnvNode):
return f"{node.var}"
Word,
ZeroOrMore,
)
region_identifier = Word(alphanums + '_')
region_start = (LineStart() + '@region $ ' +
region_identifier.setResultsName('region_identifier') + '{' +
LineEnd())
region_end = LineStart() + '}' + LineEnd()
region_param_valid = Word(alphanums + '_.')
region_param = (region_param_valid + ': ' + region_param_valid + ';' +
LineEnd())
mod_identifier = Word(alphas.upper() + alphas.lower() + '_')
mod_param_name = Word(' ' + alphas.upper() + alphas.lower() + '_')
mods_start_line = '[' + LineEnd()
mod_param = mod_param_name + ':' + Word(nums) + ";"
mod_param_additional_line = Word(nums) + ':' + Word(nums) + ';'
mod_start = '@' + mod_identifier.setResultsName('mod_identifier') + '{'
mod_end = '}' + LineEnd()
mod = (mod_start + ZeroOrMore(mod_param).setResultsName('mod_params') +
ZeroOrMore(mod_param_additional_line).setResultsName(
'mod_params_additional') + mod_end)
mods_end_line = ']' + LineEnd()
print(pe)
else:
if fn != None:
print(fn( bnf.parseString( strg ) ))
else:
print()
digits = "0123456789"
# Version 1
element = Regex("A[cglmrstu]|B[aehikr]?|C[adeflmorsu]?|D[bsy]|"
"E[rsu]|F[emr]?|G[ade]|H[efgos]?|I[nr]?|Kr?|L[airu]|"
"M[dgnot]|N[abdeiop]?|Os?|P[abdmortu]?|R[abefghnu]|"
"S[bcegimnr]?|T[abcehilm]|U(u[bhopqst])?|V|W|Xe|Yb?|Z[nr]")
element = Word( alphas.upper(), alphas.lower(), max=2)
elementRef = Group( element + Optional( Word( digits ), default="1" ) )
formula = OneOrMore( elementRef )
fn = lambda elemList : sum( [ atomicWeight[elem]*int(qty) for elem,qty in elemList ] )
test( formula, "H2O", fn )
test( formula, "C6H5OH", fn )
test( formula, "NaCl", fn )
print()
# Version 2 - access parsed items by field name
elementRef = Group( element("symbol") + Optional( Word( digits ), default="1" )("qty") )
formula = OneOrMore( elementRef )
fn = lambda elemList : sum( [ atomicWeight[elem.symbol]*int(elem.qty) for elem in elemList ] )
test( formula, "H2O", fn )
import numpy as np
import matplotlib.pyplot as plt
from pyparsing import Word, alphas, nums
source = open("simpsonsRule_acctest.out", "r")
line = Word(alphas.upper(),
alphas.lower()) + ':' + Word('-' + nums + '.') + ','
line = line + Word(alphas) + ':' + Word(nums + '.') + ','
line = line + Word(alphas) + ':' + Word(nums) + ','
line = line + Word(alphas) + ':' + Word(nums + '.')
src = [line.strip() for line in source]
acc = list()
N = list()
for _ in src:
N.append(line.parseString(_)[10])
for _ in src:
acc.append(line.parseString(_)[2])
print(N)
print(acc)
x = np.array(N, dtype=float)
y = np.array(acc, dtype=float)
fig = plt.figure()
plt.plot(x, y, "o-", color='r')
plt.xlabel("N")
plt.ylabel("acc")
plt.title("f : acc(N)")
fig.savefig("simpsonsRule_acctest.png")