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| author | William Carroll <wpcarro@gmail.com> | 2022-09-05T18·41-0700 |
|---|---|---|
| committer | clbot <clbot@tvl.fyi> | 2022-09-15T16·48+0000 |
| commit | 85b3f17007825b023d549d8e926322797e08ce6d (patch) | |
| tree | a979ba95000ac2495868a89d78baa4c1d81bb33e /tvix/eval/src/value/list.rs | |
| parent | 05958703410d37f874c4705cabbbba2082c555f7 (diff) | |
feat(tvix/eval): Support builtins.head r/4862
TL;DR: - support `builtins.head` - define `ErrorKind::IndexOutOfBounds` and canonical error code - support basic unit tests Change-Id: I859107ffb4e220cba1be8c2ac41d1913dcca37ff Reviewed-on: https://cl.tvl.fyi/c/depot/+/6544 Reviewed-by: wpcarro <wpcarro@gmail.com> Autosubmit: wpcarro <wpcarro@gmail.com> Reviewed-by: sterni <sternenseemann@systemli.org> Reviewed-by: tazjin <tazjin@tvl.su> Tested-by: BuildkiteCI
Diffstat (limited to 'tvix/eval/src/value/list.rs')
| -rw-r--r-- | tvix/eval/src/value/list.rs | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/tvix/eval/src/value/list.rs b/tvix/eval/src/value/list.rs index da86fdda26..c00ddd4191 100644 --- a/tvix/eval/src/value/list.rs +++ b/tvix/eval/src/value/list.rs @@ -32,6 +32,10 @@ impl NixList { self.0.len() } + pub fn get(&self, i: usize) -> Option<&Value> { + self.0.get(i) + } + pub fn construct(count: usize, stack_slice: Vec<Value>) -> Self { debug_assert!( count == stack_slice.len(), |