From 576b2a2a695b47a3c3326826f5fdefd272cea9b5 Mon Sep 17 00:00:00 2001
From: "Esteban Prince, Liam (UG - Computer Science)" <le00210@surrey.ac.uk>
Date: Sat, 15 Feb 2020 19:07:02 +0000
Subject: [PATCH] Update parser.py
---
parser.py | 19 +++++++++++++------
1 file changed, 13 insertions(+), 6 deletions(-)
diff --git a/parser.py b/parser.py
index 995d46d..15c6b4b 100644
--- a/parser.py
+++ b/parser.py
@@ -1,12 +1,19 @@
def preprocess():
# Return the next token from the input
-def getToken():
- int lastChar = ' '
- for c in input:
- lastChar = c if c != ' '
+def lex(input):
+ tokens = []
+
+ while len(input.split()):
+ if input is not None:
+ continue
+
+ if input[0] in ingredients:
+ input = input[1:]
+ else:
+ raise Exception('Don\'t know what this is: {}'.format(input[0]))
def parse():
- preprocess():
- tokenise()
+ preprocess()
+ lex(input)
isValid()
\ No newline at end of file
--
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