From f6815e804fb35621e84031ef880d183140b7a523 Mon Sep 17 00:00:00 2001
From: mryouse
Date: Sat, 9 Jul 2022 01:59:47 +0000
Subject: implement 'try'

---
 neb/std/core.py | 10 ++++++++++
 1 file changed, 10 insertions(+)

(limited to 'neb/std/core.py')

diff --git a/neb/std/core.py b/neb/std/core.py
index cf0686b..9e2e743 100644
--- a/neb/std/core.py
+++ b/neb/std/core.py
@@ -274,3 +274,13 @@ def interpretBench(symbol, args, env, ns):
     return ret
 
 CORE.register("bench", NebSyntax("bench", interpretBench, [Arg("command", TypeEnum.ANY)], return_type=Type(":any")))
+
+def interpretTry(symbol, args, env, ns):
+    try:
+        return evaluate(args[0], env, ns)
+    except NebPanic as e:
+        new_env = Environment(env)
+        new_env.register("_panic_", String(f"{e}"))
+        return evaluate(args[1], new_env, ns)
+
+CORE.register("try", NebSyntax("try", interpretTry, [Arg("expr", TypeEnum.ANY), Arg("except", TypeEnum.ANY)], return_type=Type(":any")))
-- 
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