From 094d3c76925cf6c05a8bfcc112849627d16279b8 Mon Sep 17 00:00:00 2001
From: Nicholas Noll <nbnoll@eml.cc>
Date: Tue, 26 Oct 2021 09:44:47 -0700
Subject: feat(rc): added index operations

---
 sys/cmd/rc/syntax.y | 15 +++++++++------
 1 file changed, 9 insertions(+), 6 deletions(-)

(limited to 'sys/cmd/rc/syntax.y')

diff --git a/sys/cmd/rc/syntax.y b/sys/cmd/rc/syntax.y
index 2e7e1da..f3c9f29 100644
--- a/sys/cmd/rc/syntax.y
+++ b/sys/cmd/rc/syntax.y
@@ -27,7 +27,7 @@
 %type<tree> line cmds cmdsln body paren block ifbody assign epilog redir;
 %type<tree> cmd basic executable nonkeyword keyword word words wordsnl atom;
 %type<tree> Tfor Tin Twhile Tif Telse Tswitch Ttwiddle Tbang Tsubshell Tfunc;
-%type<tree> Tword Tredir Tpipe;
+%type<tree> Tword Tredir Tpipe Tdup;
 
 /* grammar */
 
@@ -107,11 +107,14 @@ executable:
 
 nonkeyword:
   Tword
-| '$' atom        { $$ = maketree1('$', $2); }
-| '(' wordsnl ')' { $$ = $2; }
-| Tcount atom     { $$ = maketree1(Tcount, $2); }
-| Tjoin atom      { $$ = maketree1(Tjoin, $2); }
-//| '`'  block      { $$ = maketree1('`', $2); }
+| '$' atom                  { $$ = maketree1('$', $2); }
+| '$' atom Tindex words ')' { $$ = maketree2(Tindex, $2, $4); }
+| '(' wordsnl ')'           { $$ = $2; }
+| Tcount atom               { $$ = maketree1(Tcount, $2); }
+| Tjoin atom                { $$ = maketree1(Tjoin, $2); }
+| '`'  block                { $$ = maketree1('`', $2); }
+//| '('  words ')'            { $$ = maketree1(Tparen, $2); }
+//| Tredir block    { $$ = hangchild1($1, $2, 0); $$->type = Tpipefd; }
 
 keyword:
     Tin|Tfor|Twhile|Tif|Telse|Tswitch|Tbang|Tsubshell|Tfunc
-- 
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