/
main.py
257 lines (211 loc) · 6.14 KB
/
main.py
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import sys, os, tkFileDialog, math, random
from Tkinter import Tk
import Literal
#does not check if lines used for reasoning are valid (add an "and proof[line].valid")
#false intro messes up sometimes with multiple nots (and thus not intro, too)
#needs line checking algorithm outside of just subproofs (loop backwards and keep track of indent, indent only moves left, ignore lines to right)
#no or elim
""" #error checking
for i, c in enumerate(line):
if c == '(':
paren += 1
elif c == ')':
paren -= 1
#if paren < 0:
if paren != 0:
print "LINE", lnum, ": SYNTAX ERROR 01"
print line
return
if incomplete:
print "LINE", lnum, ": SYNTAX ERROR 02"
print line
return"""
root = Tk()
root.withdraw()
def readfile(pfile):
global lines
lines = pfile.readlines()#[l[:-1] for l in pfile.readlines()]
# print lines
def interpret():
#keep track of values
proof = []
#line by line values
indent = 0
last_indent = 0
#error checking
paren = 0
incomplete = False
for lnum, line in enumerate(lines):
indent = 0
#error checking?
#parsing
if line[-1] == '\n':
line = line[:-1]
while line[0] == '\t':
indent += 1
line = line[1:]
line = line.split(' ')
while '' in line:
line.remove('')
parts = []
for i, part in enumerate(line):
part = part.split('(')
for x in xrange(len(part) - 1):
part.insert(2 * x, '(')
for j, p in enumerate(part):
p = p.split(')')
for x in xrange(len(p) - 1):
p.insert(2 * len(p) + 1, ')')
for l in p:
if l != '':
parts.append(l)
print parts
if parts[0] == '#':
proof.append(Literal.Literal(parts[1:], 0, False))
elif parts[0] == '-':
proof.append(Literal.Literal(parts[1:], indent, False))
elif parts[0] == 'STOP':
break
else:
reason = parts[-3:-1] + parts[-1].split(',')
proof.append(Literal.Literal(parts[:-4], indent, False))
#deal with reason dashes
sub = []
if '-' in reason[-1]:
sub = [int(x) for x in l.split('-')]
ind = indent
brk = False
if reason[0] == "AND":
if reason[1] == "INTRO":
for l in reason[2:]:
if not proof[int(l) - 1].andintro(proof[-1]):
print "Invalid line", lnum
brk = True
break
if not brk:
proof[-1].valid = True
print "VALID AND INTRO", lnum
elif reason[1] == "ELIM":
for l in reason[2:]:
if not proof[int(l) - 1].andelim(proof[-1]):
print "Invalid line", lnum
brk = True
break
if not brk:
proof[-1].valid = True
print "VALID AND ELIM", lnum
elif reason[0] == "OR":
if reason[1] == "INTRO":
for l in reason[2:]:
if not proof[int(l) - 1].orintro(proof[-1]):
print "Invalid line", lnum
brk = True
break
if not brk:
proof[-1].valid = True
print "VALID OR INTRO", lnum
elif reason[1] == "ELIM":
for l in reason[2:]:
if not proof[int(l) - 1].orelim(proof[-1]):
print "Invalid line", lnum
brk = True
break
if not brk:
proof[-1].valid = True
print "VALID OR ELIM", lnum
elif reason[0] == "THEN":
if reason[1] == "INTRO":
part1 = False
brk = False
if proof[sub[0] - 1].thenintro(proof[-1], 0):
part1 = True
if part1:
for ln in proof[sub[0] - 1 : sub[1]]:
print "CHECK", ln
if ln.indent == ind + 1:
if ln.thenintro(proof[-1], 1):
brk = True
print "brk"
break
elif ln.indent < ind:
print "not brk"
break
if not brk:
print "Invalid line", lnum
else:
proof[-1].valid = True
print "VALID THEN INTRO", lnum
elif reason[1] == "ELIM":
if not proof[int(reason[2]) - 1].thenelim(proof[int(reason[3]) - 1], proof[-1]):
print "Invalid line", lnum
else:
proof[-1].valid = True
print "VALID THEN ELIM", lnum
elif reason[0] == "IFF":
if reason[1] == "INTRO":
if not proof[-1].iffintro(proof[int(reason[2]) - 1], proof[int(reason[3]) - 1]):
print "Invalid line", lnum
else:
proof[-1].valid = True
print "VALID IFF INTRO", lnum
elif reason[1] == "ELIM":
if not proof[int(reason[2]) - 1].iffelim(proof[int(reason[3]) - 1], proof[-1]):
print "Invalid line", lnum
brk = True
break
else:
proof[-1].valid = True
print "VALID IFF ELIM", lnum
elif reason[0] == "NOT":
if reason[1] == "INTRO":#copy then intro except leads to false (ln.equals("false")) and proof[-1] is negative of proof[sub[0] - 1]
part1 = False
brk = False
if proof[sub[0] - 1].notintro(proof[-1]):
part1 = True
if part1:
for ln in proof[sub[0] - 1 : sub[1]]:
print "CHECK", ln
if ln.indent == ind + 1:
if ln.equals("false"):
brk = True
print "brk"
break
elif ln.indent < ind:
print "not brk"
break
if not brk:
print "Invalid line", lnum
else:
proof[-1].valid = True
print "VALID NOT INTRO", lnum
elif reason[1] == "ELIM":
if not proof[int(reason[2]) - 1].notelim(proof[-1]):
print "Invalid line", lnum
brk = True
break
else:
proof[-1].valid = True
print "VALID FALSE ELIM", lnum
elif reason[0] == "FALSE":
if reason[1] == "INTRO":
if not proof[int(reason[2]) - 1].falseintro(proof[int(reason[3]) - 1]):
print "Invalid line", lnum
if not brk:
proof[-1].valid = True
print "VALID FALSE INTRO", lnum
elif reason[1] == "ELIM":
if not proof[-1].falseelim(proof[int(reason[2]) - 1]):
print "Invalid line", lnum
else:
proof[-1].valid = True
print "VALID FALSE ELIM", lnum
# print "prove"
# print lines
# for line in proof:
# print line.type, line.terms
while 1:
pfile = tkFileDialog.askopenfile(initialdir = "projects")#, filetypes = [("PYLOGIC PROOF", ".pyl")])
if pfile is None:
sys.exit()
readfile(pfile)
interpret()