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# -----------------------------------------------------------------------------
# lex_opt_alias.py
#
# Tests ability to match up functions with states, aliases, and
# lexing tables.
# -----------------------------------------------------------------------------
import sys
if ".." not in sys.path: sys.path.insert(0,"..")
tokens = (
'NAME','NUMBER',
)
states = (('instdef','inclusive'),('spam','exclusive'))
literals = ['=','+','-','*','/', '(',')']
# Tokens
def t_instdef_spam_BITS(t):
r'[01-]+'
return t
t_NAME = r'[a-zA-Z_][a-zA-Z0-9_]*'
def 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_ANY_NUMBER = NUMBER
t_ignore = " \t"
t_spam_ignore = t_ignore
def t_newline(t):
r'\n+'
t.lexer.lineno += t.value.count("\n")
def t_error(t):
print("Illegal character '%s'" % t.value[0])
t.lexer.skip(1)
t_spam_error = t_error
# Build the lexer
import ply.lex as lex
lex.lex(optimize=1,lextab="aliastab")
lex.runmain(data="3+4")
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