Implemented interpreter, almost fully documented

2015-07-08 16:38:49 +02:00
parent a96a5fe1f7
commit 9d4406907a
6 changed files with 137 additions and 22 deletions
--- a/improved/lex.py
+++ b/improved/lex.py
@@ -26,7 +26,8 @@ def lex(characters, token_exprs):
                    tokens.append(token)
                break
        if not match:
-            sys.stderr.write('[Parser] Illegal character: %s\\n' % characters[pos])
+            sys.stderr.write('[Lexer] Illegal character at %d: %s(%d)\n'
+                             % (pos, characters[pos], ord(characters[pos])))
            raise ValueError(characters[pos])
        else:
            pos = match.end(0)