From: Joshua Wise <jwise@andrew.cmu.edu>
Date: Sat, 25 Dec 2010 06:24:07 +0000 (-0500)
Subject: Add string pasting support to the gramamr.
X-Git-Url: http://git.joshuawise.com/snipe.git/commitdiff_plain/a644da892dbd55a7be1aed029dafebe28d26d27e?ds=inline;hp=ab221774a414bdcc3fd6b8cae773c1489b88b051

Add string pasting support to the gramamr.
---

diff --git a/parse/l5.grm b/parse/l5.grm
index bf2e261..75c8bc9 100644
--- a/parse/l5.grm
+++ b/parse/l5.grm
@@ -51,6 +51,7 @@ fun make_lval (A.Var(id)) ext = id
    program of A.program
  | programx of A.program
  | stms of A.stm list
+ | stringcat of string
  | stm of A.stm
  | simp of A.stm
  | return of A.stm
@@ -184,9 +185,12 @@ simpoption :                        (NONE)
 block      : stm                    ([stm])
            | LBRACE stms RBRACE     (stms)
 
+stringcat  : STRING                 (STRING)
+           | STRING stringcat       (STRING ^ stringcat)
+
 exp        : LPAREN exp RPAREN      (exp)
            | INTNUM                 (mark (A.ConstExp(INTNUM),(INTNUMleft,INTNUMright)))
-           | STRING                 (mark (A.StringExp(STRING),(STRINGleft,STRINGright)))
+           | stringcat              (mark (A.StringExp(stringcat),(stringcatleft,stringcatright)))
            | IDENT                  (mark (A.Var(IDENT), (IDENTleft,IDENTright)))
            | LBRACKET vtype RBRACKET exp %prec UNARY (mark (A.Cast (vtype, exp), (LBRACKETleft, expright)))
            | exp DOT IDENT          (mark (A.Member(exp, IDENT), (expleft, IDENTright)))