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tokenTree.py~
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tokenTree.py~
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#!/usr/bin/env python
# -*- coding: utf-8 -*-
# Recursive LTROLL interpeter
# God have mercy of our souls
# by: André Driemeyer andredriem@gmail.com
import copy
#Creates Program Tree
class TokenTree:
operators = ('+','-','<','>','<=','>=','=','=/=','or','and','not not', ';', ':', ':=', 'in')
types = ('nat','bool','unit')
def __init__(self,program_string):
try:
self.variables,self.program_string = self.program_string.split('#')
self.tokens = self.program_string.split(' ')
self.tree = self.__makeTree__()
self.tree = [TokenTree(self.variables).tree,self.tree]
except:
self.program_string = program_string
self.tokens = self.program_string.split(' ')
self.tree = self.__makeTree__()
#print self.tree
def __makeTree__(self):
sentence_expression_flag = 0
if self.tokens[0] == '$':
self.tokens.pop(0)
sentence_expression_flag = 1
return_list = []
##Pre-expression tokens treatment
#print 'tokens = ' + str(self.tokens)
final = []
if self.tokens[0] == 'if':
return_list = self.__makeTreeIf__(final,sentence_expression_flag)
elif self.tokens[0] == 'for':
return_list = self.__makeTreeFor__(final)
elif self.tokens[0] == '!':
self.tokens.pop(0)
return_list = ['!', self.__makeTree__()]
elif self.tokens[0] == 'notnot':
self.tokens.pop(0)
return_list = ['notnot', self.__makeTree__()]
elif self.tokens[0] == 'fn':
return_list = self.__makeTreeFn__(final)
elif self.tokens[0] == '!':
return_list = ['!', self.__makeTreeTypeGeneral__(final)]
elif self.tokens[0] in self.types:
return_list = self.__makeTreeTypeGeneral__(final)
elif self.tokens[0] == 'ref':
return_list = [self.tokens.pop(0),self.__makeTreeTypeGeneral__(final)]
elif self.tokens[0] == 'true':
self.tokens.pop(0)
return_list = 'true'
elif self.tokens[0] == 'false':
self.tokens.pop(0)
return_list = 'false'
elif self.tokens[0] == 'x':
self.tokens.pop(0)
return_list = 'x'
elif unicode(self.tokens[0]).isnumeric():
temp = self.tokens.pop(0)
return_list = temp
elif self.tokens[0] in self.operators:
pass
elif self.tokens[0] == '$':
return_list = self.__makeTree__()
else:
return_list = self.tokens.pop(0)
#print 'final = ' + str(return_list)
##Post-expression tokens treatment
if sentence_expression_flag == 1:
try:
if self.tokens[0] in self.operators:
temp = self.tokens.pop(0)
return [return_list,temp,(self.__makeTree__())]
else:
return return_list
except IndexError:
return return_list
return return_list
def __makeTreeIf__(self,final,sentence_expression_flag):
final.append('if')
self.tokens.pop(0)
final.append(self.__makeTree__())
if self.tokens[0] != 'then':
raise Exception('Mal Tipado'+str(final))
self.tokens.pop(0)
final.append('then')
final.append(self.__makeTree__())
if self.tokens[0] != 'else':
raise Exception('Mal Tipado')
self.tokens.pop(0)
final.append('else')
final.append(self.__makeTree__())
return final
def __makeTreeFor__(self,final):
final.append('for')
self.tokens.pop(0)
final.append(self.__makeTree__())
if self.tokens[0] != 'until':
raise Exception('Mal Tipado'+str(final))
self.tokens.pop(0)
final.append('until')
final.append(self.__makeTree__())
if self.tokens[0] != 'do':
raise Exception('Mal Tipado')
self.tokens.pop(0)
final.append('do')
final.append(self.__makeTree__())
return final
def __makeTreeFn__(self,final):
final.append('fn')
self.tokens.pop(0)
#print 'entrei'
final.append(self.tokens.pop(0))
if self.tokens[0] != '/':
raise Exception('Mal Tipado'+str(final))
self.tokens.pop(0)
final.append('/')
final.append(self.__makeTree__())
if self.tokens[0] != '->':
raise Exception('Mal Tipado'+str(final))
self.tokens.pop(0)
final.append('->')
final.append(self.__makeTree__())
return final
def __makeTreeTypeGeneral__(self,final):
final.append(copy.deepcopy(self.tokens[0]))
self.tokens.pop(0)
try:
if self.tokens[0] == '-->':
temp = self.tokens.pop(0)
return [final,'-->',self.__makeTree__()]
else:
return final
except IndexError:
return final