From e97fdc696928fd27538d9fc4789fa6a6d9f71a16 Mon Sep 17 00:00:00 2001
From: Andreas Kloeckner <inform@tiker.net>
Date: Sat, 5 May 2012 02:05:57 -0400
Subject: [PATCH] Fix parsing of multi-argument functions in Maxima interface.
---
pymbolic/maxima.py | 14 ++++++++++++++
1 file changed, 14 insertions(+)
diff --git a/pymbolic/maxima.py b/pymbolic/maxima.py
index 3faf898..c4da310 100644
--- a/pymbolic/maxima.py
+++ b/pymbolic/maxima.py
@@ -139,6 +139,20 @@ class MaximaParser(ParserBase):
pstate.advance()
left_exp **= self.parse_expression(pstate, p._PREC_POWER)
did_something = True
+ elif next_tag is p._comma and p._PREC_COMMA > min_precedence:
+ # The precedence makes the comma left-associative.
+
+ pstate.advance()
+ if pstate.is_at_end() or pstate.next_tag() is p._closepar:
+ left_exp = (left_exp,)
+ else:
+ new_el = self.parse_expression(pstate, p._PREC_COMMA)
+ if isinstance(left_exp, tuple):
+ left_exp = left_exp + (new_el,)
+ else:
+ left_exp = (left_exp, new_el)
+
+ did_something = True
return left_exp, did_something
--
GitLab