Sha256: 4d5586b3f856f34612a027a2385c91a329cec83bc7dba336d00ae4c1b5af6bdf
Contents?: true
Size: 1.04 KB
Versions: 8
Compression:
Stored size: 1.04 KB
Contents
# -----------------------------------------------------------------------------
# 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")
Version data entries
8 entries across 8 versions & 1 rubygems