diff options
Diffstat (limited to 'tvix/eval/src/builtins/mod.rs')
| -rw-r--r-- | tvix/eval/src/builtins/mod.rs | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/tvix/eval/src/builtins/mod.rs b/tvix/eval/src/builtins/mod.rs index 08b8299e48..1fc8336417 100644 --- a/tvix/eval/src/builtins/mod.rs +++ b/tvix/eval/src/builtins/mod.rs @@ -431,6 +431,21 @@ fn pure_builtins() -> Vec<Builtin> { Builtin::new("throw", &[true], |args: Vec<Value>, _: &mut VM| { Err(ErrorKind::Throw(args[0].to_str()?.to_string())) }), + Builtin::new("tryEval", &[false], |args: Vec<Value>, vm: &mut VM| { + let mut res = BTreeMap::new(); + match args[0].force(vm) { + Ok(value) => { + res.insert("value".into(), (*value).clone()); + res.insert("success".into(), true.into()); + } + Err(e) if e.is_catchable() => { + res.insert("value".into(), false.into()); + res.insert("success".into(), false.into()); + } + Err(e) => return Err(e), + } + Ok(Value::attrs(NixAttrs::from_map(res))) + }), // coerce_to_string forces for us Builtin::new("toString", &[false], |args: Vec<Value>, vm: &mut VM| { args[0] |