From af3fa90e8bb41c306c5fe2d2cf105db6bbabd1d9 Mon Sep 17 00:00:00 2001
From: Nicholas Noll <nbnoll@eml.cc>
Date: Tue, 19 Oct 2021 10:53:45 -0700
Subject: Feat: word operators and more robust crashing

Added the length and concatenate operators.
Slightly improved the robustness on syntax errors.
---
 sys/cmd/rc/code.c | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

(limited to 'sys/cmd/rc/code.c')

diff --git a/sys/cmd/rc/code.c b/sys/cmd/rc/code.c
index d4dd6e1..c98cde2 100644
--- a/sys/cmd/rc/code.c
+++ b/sys/cmd/rc/code.c
@@ -51,6 +51,7 @@ walk(Tree *node)
     switch(node->type){
     default:
         print(shell.err, "bad type %d in interpreter walk\n", node->type);
+        fatal("crashing\n");
         break;
 
     case '$':
@@ -59,6 +60,20 @@ walk(Tree *node)
         emitf(Xdollar);
         break;
 
+    case Tcount:
+        emitf(Xmark);
+        walk(node->child[0]);
+        emitf(Xcount);
+        break;
+
+    case Tflat:
+        emitf(Xmark);
+        walk(node->child[0]);
+        emitf(Xflat);
+        break;
+
+    case Tindex:
+
 #if 0
     case '&':
         emitf(Xasync);
@@ -103,6 +118,11 @@ walk(Tree *node)
         emits(strdup(node->str));
         break;
 
+    case Twords:
+        walk(node->child[1]);
+        walk(node->child[0]);
+        break;
+
     case '=':
         for(n=node; node && node->type == '='; node = node->child[2])
             ;
-- 
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