From 5d5468857b22a3bae2e87d850e7bcea7fb761f10 Mon Sep 17 00:00:00 2001
From: yhirose <yuji.hirose.bug@gmail.com>
Date: Tue, 2 Jun 2015 23:14:32 -0400
Subject: [PATCH] Fixed parse problem with PARAMETERS and ARGUMENTS.

---
 language/parser.cc | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/language/parser.cc b/language/parser.cc
index 1461a27..82d67cc 100644
--- a/language/parser.cc
+++ b/language/parser.cc
@@ -13,9 +13,9 @@ static auto g_grammar = R"(
     WHILE                 <-  'while' _ EXPRESSION BLOCK
     IF                    <-  'if' _ EXPRESSION BLOCK ('else' _ 'if' _ EXPRESSION BLOCK)* ('else' _ BLOCK)?
     FUNCTION              <-  'fn' _ PARAMETERS BLOCK
-    PARAMETERS            <-  '(' _ IDENTIFIER* ')' _ 
+    PARAMETERS            <-  '(' _ (IDENTIFIER (',' _ IDENTIFIER)*)? ')' _
     FUNCTION_CALL         <-  IDENTIFIER ARGUMENTS
-    ARGUMENTS             <-  '(' _ EXPRESSION* ')' _ 
+    ARGUMENTS             <-  '(' _ (EXPRESSION (', ' _ EXPRESSION)*)? ')' _
 
     PRIMARY               <-  CONDITION (CONDITION_OPERATOR CONDITION)?
     CONDITION             <-  TERM (TERM_OPERATOR TERM)*