[src/trunk]: src/bin/sh PR/50958: (partial fix) - support ?: expressions in a...

[christos <christos%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/ee493abf2229
branches:  trunk
changeset: 344173:ee493abf2229
user:      christos <christos%NetBSD.org@localhost>
date:      Wed Mar 16 15:42:33 2016 +0000

description:
PR/50958: (partial fix) - support ?: expressions in arith expansions
(from kre)

diffstat:

 bin/sh/arith.y     |  6 ++++--
 bin/sh/arith_lex.l |  6 ++++--
 2 files changed, 8 insertions(+), 4 deletions(-)

diffs (63 lines):

diff -r f27e916cbb4f -r ee493abf2229 bin/sh/arith.y
--- a/bin/sh/arith.y    Wed Mar 16 15:41:55 2016 +0000
+++ b/bin/sh/arith.y    Wed Mar 16 15:42:33 2016 +0000
@@ -1,5 +1,5 @@
 %{
-/*     $NetBSD: arith.y,v 1.22 2012/03/20 18:42:29 matt Exp $  */
+/*     $NetBSD: arith.y,v 1.23 2016/03/16 15:42:33 christos Exp $      */
 
 /*-
  * Copyright (c) 1993
@@ -38,7 +38,7 @@
 #if 0
 static char sccsid[] = "@(#)arith.y    8.3 (Berkeley) 5/4/95";
 #else
-__RCSID("$NetBSD: arith.y,v 1.22 2012/03/20 18:42:29 matt Exp $");
+__RCSID("$NetBSD: arith.y,v 1.23 2016/03/16 15:42:33 christos Exp $");
 #endif
 #endif /* not lint */
 
@@ -65,6 +65,7 @@
 %}
 %token ARITH_NUM ARITH_LPAREN ARITH_RPAREN
 
+%left ARITH_QM ARITH_COLON
 %left ARITH_OR
 %left ARITH_AND
 %left ARITH_BOR
@@ -89,6 +90,7 @@
 
 
 expr:  ARITH_LPAREN expr ARITH_RPAREN { $$ = $2; }
+       | expr ARITH_QM expr ARITH_COLON expr { $$ = $1 ? $3 : $5; }
        | expr ARITH_OR expr    { $$ = $1 ? $1 : $3 ? $3 : 0; }
        | expr ARITH_AND expr   { $$ = $1 ? ( $3 ? $3 : 0 ) : 0; }
        | expr ARITH_BOR expr   { $$ = $1 | $3; }
diff -r f27e916cbb4f -r ee493abf2229 bin/sh/arith_lex.l
--- a/bin/sh/arith_lex.l        Wed Mar 16 15:41:55 2016 +0000
+++ b/bin/sh/arith_lex.l        Wed Mar 16 15:42:33 2016 +0000
@@ -1,5 +1,5 @@
 %{
-/*     $NetBSD: arith_lex.l,v 1.17 2016/03/16 15:41:55 christos Exp $  */
+/*     $NetBSD: arith_lex.l,v 1.18 2016/03/16 15:42:33 christos Exp $  */
 
 /*-
  * Copyright (c) 1993
@@ -38,7 +38,7 @@
 #if 0
 static char sccsid[] = "@(#)arith_lex.l        8.3 (Berkeley) 5/4/95";
 #else
-__RCSID("$NetBSD: arith_lex.l,v 1.17 2016/03/16 15:41:55 christos Exp $");
+__RCSID("$NetBSD: arith_lex.l,v 1.18 2016/03/16 15:42:33 christos Exp $");
 #endif
 #endif /* not lint */
 
@@ -92,6 +92,8 @@
 "-"    { return(ARITH_SUB); }
 "~"    { return(ARITH_BNOT); }
 "!"    { return(ARITH_NOT); }
+"?"    { return(ARITH_QM); }
+":"    { return(ARITH_COLON); }
 .      { error("arith: syntax error: \"%s\"", arith_startbuf); }
 %%