Mercurial > repo
view ply-3.8/test/lex_optimize3.py @ 8650:4337d7793b19
<izabera> ` echo \'f="$(find wisdom -ipath "wisdom/*$1*" -type f -print0 | shuf -z -n1); echo -n "${f#wisdom/}//" | rnooooooodl; rnoooooooodl < "$f"\' > bin/wisdom
author | HackBot |
---|---|
date | Wed, 29 Jun 2016 00:26:03 +0000 |
parents | 343ff337a19b |
children |
line wrap: on
line source
# ----------------------------------------------------------------------------- # lex_optimize3.py # # Writes table in a subdirectory structure. # ----------------------------------------------------------------------------- import sys if ".." not in sys.path: sys.path.insert(0,"..") import ply.lex as lex tokens = ( 'NAME','NUMBER', 'PLUS','MINUS','TIMES','DIVIDE','EQUALS', 'LPAREN','RPAREN', ) # Tokens t_PLUS = r'\+' t_MINUS = r'-' t_TIMES = r'\*' t_DIVIDE = r'/' t_EQUALS = r'=' t_LPAREN = r'\(' t_RPAREN = r'\)' t_NAME = r'[a-zA-Z_][a-zA-Z0-9_]*' def t_NUMBER(t): r'\d+' try: t.value = int(t.value) except ValueError: print("Integer value too large %s" % t.value) t.value = 0 return t t_ignore = " \t" def t_newline(t): r'\n+' t.lineno += t.value.count("\n") def t_error(t): print("Illegal character '%s'" % t.value[0]) t.lexer.skip(1) # Build the lexer lex.lex(optimize=1,lextab="lexdir.sub.calctab" ,outputdir="lexdir/sub") lex.runmain(data="3+4")