Re: [Pyparsing] Unordered set of expressions

[Paul M. <pt...@au...>]

Russell -

Still not seeing the problem.


from pyparsing import *

"""
language = expr1 & expr2 & Optional(expr3) & ZeroOrMore(expr4) & ZeroOrMore(expr5)
"""

A = oneOf("A a")("As")
B = oneOf("B b")("Bs")
C = oneOf("C c")("Cs")
D = oneOf("D d")("Ds")
E = oneOf("E e")("Es")

lang = A & B & Optional(C) & ZeroOrMore(D) & ZeroOrMore(E)

tests = """\
    ABCDE
    ABDE
    AB
    BA
    EDCBA
    EaEB
    BeDCADEeDEDDeDD""".splitlines()

for t in tests:
    print t.strip()
    print lang.parseString(t, parseAll=True).dump()
    print


Prints:

ABCDE
['A', 'B', 'C', 'D', 'E']
- As: A
- Bs: B
- Cs: C
- Ds: D
- Es: E

ABDE
['A', 'B', 'D', 'E']
- As: A
- Bs: B
- Ds: D
- Es: E

AB
['A', 'B']
- As: A
- Bs: B

BA
['B', 'A']
- As: A
- Bs: B

EDCBA
['E', 'D', 'C', 'B', 'A']
- As: A
- Bs: B
- Cs: C
- Ds: D
- Es: E

EaEB
['E', 'a', 'E', 'B']
- As: a
- Bs: B
- Es: ['E', 'E']

BeDCADEeDEDDeDD
['B', 'e', 'D', 'C', 'A', 'D', 'E', 'e', 'D', 'E', 'D', 'D', 'e', 'D', 'D']
- As: A
- Bs: B
- Cs: C
- Ds: ['D', 'D', 'D', 'D', 'D', 'D', 'D']
- Es: ['e', 'E', 'e', 'E', 'e']


No Group required, and the parsed results look okay.

-- Paul