Add if..then..else

[hcoop/domtool2.git] / src / domtool.grm

diff --git a/src/domtool.grm b/src/domtool.grm
index 532dad9..c9cd837 100644 (file)
--- a/src/domtool.grm
+++ b/src/domtool.grm
@@ -32,6 +32,7 @@ open Ast
  | COLON | CARET | BANG | AND
  | LPAREN | RPAREN | LBRACK | RBRACK | LBRACE | RBRACE
  | EQ | COMMA | BSLASH | BSLASHBSLASH | SEMI | LET | IN | BEGIN | END
+ | IF | THEN | ELSE
  | ROOT
  | EXTERN | TYPE | VAL | WITH | WHERE | CONTEXT
 
@@ -128,6 +129,7 @@ exp    : apps                              (apps)
        | exp SEMI                          (exp)
        | SYMBOL LARROW CSYMBOL SEMI exp    (EGet (SYMBOL, NONE, CSYMBOL, exp), (SYMBOLleft, expright))
        | SYMBOL COLON typ LARROW CSYMBOL SEMI exp (EGet (SYMBOL, SOME typ, CSYMBOL, exp), (SYMBOLleft, expright))
+       | IF exp THEN exp ELSE exp          (EIf (exp1, exp2, exp3), (IFleft, exp3right))
 
 apps   : term                              (term)
        | apps term                         (EApp (apps, term), (appsleft, termright))