diff options
Diffstat (limited to 'tvix/eval')
| -rw-r--r-- | tvix/eval/docs/builtins.md | 2 | ||||
| -rw-r--r-- | tvix/eval/src/builtins/mod.rs | 38 | ||||
| -rw-r--r-- | tvix/eval/src/tests/nix_tests/eval-okay-regex-split.exp (renamed from tvix/eval/src/tests/nix_tests/notyetpassing/eval-okay-regex-split.exp) | 0 | ||||
| -rw-r--r-- | tvix/eval/src/tests/nix_tests/eval-okay-regex-split.nix (renamed from tvix/eval/src/tests/nix_tests/notyetpassing/eval-okay-regex-split.nix) | 0 |
4 files changed, 39 insertions, 1 deletions
diff --git a/tvix/eval/docs/builtins.md b/tvix/eval/docs/builtins.md index 89fe45318a95..00af50484903 100644 --- a/tvix/eval/docs/builtins.md +++ b/tvix/eval/docs/builtins.md @@ -102,7 +102,7 @@ The `impl` column indicates implementation status in tvix: | scopedImport | true | | | | | seq | false | | | | | sort | false | | | | -| split | false | | | todo | +| split | false | | | | | splitVersion | false | | | | | storeDir | false | | | store | | storePath | false | | | store | diff --git a/tvix/eval/src/builtins/mod.rs b/tvix/eval/src/builtins/mod.rs index 7f55c90c15ad..a6fcb8742c56 100644 --- a/tvix/eval/src/builtins/mod.rs +++ b/tvix/eval/src/builtins/mod.rs @@ -632,6 +632,44 @@ fn pure_builtins() -> Vec<Builtin> { // we just return the second and ignore the first Ok(args.pop().unwrap()) }), + Builtin::new( + "split", + &[true, true], + |mut args: Vec<Value>, _: &mut VM| { + let s = args.pop().unwrap().to_str()?; + let text = s.as_str(); + let re = args.pop().unwrap().to_str()?; + let re: Regex = Regex::new(re.as_str()).unwrap(); + let mut capture_locations = re.capture_locations(); + let num_captures = capture_locations.len(); + let mut ret = NixList::new(); + let mut pos = 0; + + while let Some(thematch) = re.captures_read_at(&mut capture_locations, text, pos) { + // push the unmatched characters preceding the match + ret.push(Value::from(&text[pos..thematch.start()])); + + // Push a list with one element for each capture + // group in the regex, containing the characters + // matched by that capture group, or null if no match. + // We skip capture 0; it represents the whole match. + let v: Vec<Value> = (1..num_captures) + .map(|i| capture_locations.get(i)) + .map(|o| { + o.map(|(start, end)| Value::from(&text[start..end])) + .unwrap_or(Value::Null) + }) + .collect(); + ret.push(Value::List(NixList::from(v))); + pos = thematch.end(); + } + + // push the unmatched characters following the last match + ret.push(Value::from(&text[pos..])); + + Ok(Value::List(ret)) + }, + ), Builtin::new("sort", &[true, true], |args: Vec<Value>, vm: &mut VM| { let mut list = args[1].to_list()?; let comparator = &args[0]; diff --git a/tvix/eval/src/tests/nix_tests/notyetpassing/eval-okay-regex-split.exp b/tvix/eval/src/tests/nix_tests/eval-okay-regex-split.exp index 27ba77ddaf61..27ba77ddaf61 100644 --- a/tvix/eval/src/tests/nix_tests/notyetpassing/eval-okay-regex-split.exp +++ b/tvix/eval/src/tests/nix_tests/eval-okay-regex-split.exp diff --git a/tvix/eval/src/tests/nix_tests/notyetpassing/eval-okay-regex-split.nix b/tvix/eval/src/tests/nix_tests/eval-okay-regex-split.nix index 0073e057787d..0073e057787d 100644 --- a/tvix/eval/src/tests/nix_tests/notyetpassing/eval-okay-regex-split.nix +++ b/tvix/eval/src/tests/nix_tests/eval-okay-regex-split.nix |