make condition brackets optional

2014-05-12 13:57:24 +03:00
parent 956d1eb135
commit 1170b0798b
2 changed files with 15 additions and 6 deletions
--- a/lib/parser/control.rb
+++ b/lib/parser/control.rb
@ -2,8 +2,10 @@ module Parser
  module Control
    include Parslet
    rule(:conditional) do
-      keyword_if >> left_parenthesis >> (simple_expression|operator_expression).as(:conditional) >> right_parenthesis >> newline >>
-        expressions_else.as(:if_true) >> newline >> expressions_end.as(:if_false)
+      keyword_if >> 
+      (( (simple_expression|operator_expression).as(:conditional) ) |
+        left_parenthesis >> (simple_expression|operator_expression).as(:conditional) >>  right_parenthesis) >>
+      newline >> expressions_else.as(:if_true) >> newline >> expressions_end.as(:if_false)
      end
    
    rule(:while_do) do