Python PLY zero or more occurrences of a parsing item
Posted
by None
on Stack Overflow
See other posts from Stack Overflow
or by None
Published on 2010-05-08T16:21:47Z
Indexed on
2010/05/08
16:28 UTC
Read the original article
Hit count: 189
I am using Python with PLY to parse LISP-like S-Expressions and when parsing a function call there can be zero or more arguments. How can I put this into the yacc code. This is my function so far:
def p_EXPR(p):
'''EXPR : NUMBER
| STRING
| LPAREN funcname [EXPR] RPAREN'''
if len(p) == 2:
p[0] = p[1]
else:
p[0] = ("Call", p[2], p[3:-1])
I need to replace "[EXPR]" with something that allows zero or more EXPR's. How can I do this?
© Stack Overflow or respective owner
