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pycoolc
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Updated readme

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Niles Rogoff 2017-03-25 15:11:34 -04:00
parent 837b302d0f
commit 3de17daa74
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2 changed files with 6 additions and 1 deletions
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4
parser.py
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@ -8,6 +8,7 @@ class parser():
def __init__(self, grammar): def __init__(self, grammar):
self.grammar = grammar self.grammar = grammar
def parse(self, inp): def parse(self, inp):
print("Parsing input " + inp)
self.tokens = lexer.lex(inp) self.tokens = lexer.lex(inp)
self.tokens = [t for t in self.tokens if not t.type == "whitespace_nfa"] self.tokens = [t for t in self.tokens if not t.type == "whitespace_nfa"]
self.tokens_ptr = 0 self.tokens_ptr = 0
@ -16,7 +17,7 @@ class parser():
def term(self, t_type, literal = False): def term(self, t_type, literal = False):
this_token = self.tokens[self.tokens_ptr] this_token = self.tokens[self.tokens_ptr]
self.tokens_ptr += 1 self.tokens_ptr += 1
print("attempting to match '" + str(literal) + "' ("+t_type+") to " + this_token.matched_string + " at position " + str(self.tokens_ptr - 1)) #print("attempting to match '" + str(literal) + "' ("+t_type+") to " + this_token.matched_string + " at position " + str(self.tokens_ptr - 1))
if t_type != this_token.type: if t_type != this_token.type:
return False return False
if not literal: if not literal:
@ -40,6 +41,7 @@ class parser():
for f in grammar[nterm]: for f in grammar[nterm]:
self.tokens_ptr = save self.tokens_ptr = save
if self.match_syms(f): if self.match_syms(f):
print("Matched term " + str([k[1] for k in f]))
return True return True
return False return False

3
readme.md
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@ -4,3 +4,6 @@ COOL is the Classroom Object Oriented Language. I'm going to get at least partwa
This is what the lexical analyzer looks like now This is what the lexical analyzer looks like now
![](http://i.imgur.com/ZzrVRWG.png) ![](http://i.imgur.com/ZzrVRWG.png)
This is what the parser looks like so far
![](http://i.imgur.com/vq3DkmY.png)