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feat(tvix/eval): Implement builtins.concatStringsSep

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Change-Id: I6e46bcdbf3b5258b60edb017709fee577eb8ec74
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6907
Reviewed-by: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI
This commit is contained in:
Griffin Smith 2022-10-09 13:09:11 -04:00 • committed by grfn
parent 41ddc37725
commit 66a35de3b6
5 changed files with 46 additions and 0 deletions
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16
tvix/eval/src/builtins/mod.rs
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@ -169,6 +169,22 @@ fn pure_builtins() -> Vec<Builtin> {
Ok(Value::List(res.into()))
},
),
Builtin::new(
"concatStringsSep",
&[true, true],
|args: Vec<Value>, vm: &mut VM| {
let separator = args[0].to_str()?;
let list = args[1].to_list()?;
let mut res = String::new();
for (i, val) in list.into_iter().enumerate() {
if i != 0 {
res.push_str(&separator);
}
res.push_str(&val.force(vm)?.coerce_to_string(CoercionKind::Weak, vm)?);
}
Ok(res.into())
},
),
Builtin::new(
"div",
&[false, false],