Updated grammar to match recent changes

lukewilson2002 · Sep 9, 2018 · ef30cdd · ef30cdd
1 parent 627763f
commit ef30cdd
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/grammar.ebnf b/grammar.ebnf
@@ -5,8 +5,10 @@ power_expr = factor, { "^", factor } ;
 factor = "(", additive_expr, ")"
        | function, factor
        | "-", factor
+       | constant
        | number ;
-function = "sqrt" ;
+function = "sqrt" | "sin" | "cos" | "tan" | "log" ;
+constant = "pi" | "e" ;
 
 digit = "0" | "1" | "2" | "3" | "4" | "5" | "6" | "7" | "8" | "9" ;
 number = [ "-" ], ( digit, { digit }, [ ".", { digit } ] ) | ( ".", digit, { digit } ) ;