diff options
| -rw-r--r-- | tvix/eval/src/builtins/mod.rs | 6 | ||||
| -rw-r--r-- | tvix/eval/src/tests/tvix_tests/eval-okay-builtins-hasattr.exp | 1 | ||||
| -rw-r--r-- | tvix/eval/src/tests/tvix_tests/eval-okay-builtins-hasattr.nix | 9 |
3 files changed, 16 insertions, 0 deletions
diff --git a/tvix/eval/src/builtins/mod.rs b/tvix/eval/src/builtins/mod.rs index a5ca2114e1..f6af16f96f 100644 --- a/tvix/eval/src/builtins/mod.rs +++ b/tvix/eval/src/builtins/mod.rs @@ -134,6 +134,12 @@ fn pure_builtins() -> Vec<Builtin> { Builtin::new("length", &[true], |args, _| { Ok(Value::Integer(args[0].to_list()?.len() as i64)) }), + Builtin::new("hasAttr", &[true, true], |args, _| { + let k = args[0].to_str()?; + let xs = args[1].to_attrs()?; + + Ok(Value::Bool(xs.contains(k.as_str()))) + }), Builtin::new("head", &[true], |args, _| match args[0].to_list()?.get(0) { Some(x) => Ok(x.clone()), None => Err(ErrorKind::IndexOutOfBounds { index: 0 }), diff --git a/tvix/eval/src/tests/tvix_tests/eval-okay-builtins-hasattr.exp b/tvix/eval/src/tests/tvix_tests/eval-okay-builtins-hasattr.exp new file mode 100644 index 0000000000..541fe347cb --- /dev/null +++ b/tvix/eval/src/tests/tvix_tests/eval-okay-builtins-hasattr.exp @@ -0,0 +1 @@ +[ true true true false false true false ] diff --git a/tvix/eval/src/tests/tvix_tests/eval-okay-builtins-hasattr.nix b/tvix/eval/src/tests/tvix_tests/eval-okay-builtins-hasattr.nix new file mode 100644 index 0000000000..e87e186b64 --- /dev/null +++ b/tvix/eval/src/tests/tvix_tests/eval-okay-builtins-hasattr.nix @@ -0,0 +1,9 @@ +[ + (builtins.hasAttr "foo" { foo = 1; bar = 2; baz = 3; }) + (builtins.hasAttr "bar" { foo = 1; bar = 2; baz = 3; }) + (builtins.hasAttr "baz" { foo = 1; bar = 2; baz = 3; }) + (builtins.hasAttr "FOO" { foo = 1; bar = 2; baz = 3; }) + (builtins.hasAttr "foo" {}) + (builtins.hasAttr ("f" + "o" + "o") { foo = 1; }) + (builtins.hasAttr ("b" + "a" + "r") { foo = 1; }) +] |