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authorGriffin Smith <root@gws.fyi>2022-10-10T04·32-0400
committergrfn <grfn@gws.fyi>2022-10-15T20·35+0000
commit5eb89be68246f1e5a8cd28e48d5cec75921ca97a (patch)
tree73a8d48a4c04e2b41ef100b18560c438e9a0832c /tvix/eval/src/builtins/mod.rs
parent277c69cbe5aac853b26d6173e07262f8cc7aff12 (diff)
feat(tvix/eval): Implement builtins.fromJSON r/5135
Using `serde_json` for parsing JSON here, plus an `impl FromJSON for
Value`. The latter is primarily to stay "dependency light" for now -
likely going with an actual serde `Deserialize` impl in the future is
going to be way better as it allows saving significantly on intermediary
allocations.

Change-Id: I152a0448ff7c87cf7ebaac927c38912b99de1c18
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6920
Tested-by: BuildkiteCI
Reviewed-by: tazjin <tazjin@tvl.su>
Diffstat (limited to 'tvix/eval/src/builtins/mod.rs')
-rw-r--r--tvix/eval/src/builtins/mod.rs5
1 files changed, 5 insertions, 0 deletions
diff --git a/tvix/eval/src/builtins/mod.rs b/tvix/eval/src/builtins/mod.rs
index 1ed59ffdc8ed..c0dce868c6fc 100644
--- a/tvix/eval/src/builtins/mod.rs
+++ b/tvix/eval/src/builtins/mod.rs
@@ -271,6 +271,11 @@ fn pure_builtins() -> Vec<Builtin> {
                 Ok(res)
             },
         ),
+        Builtin::new("fromJSON", &[true], |args: Vec<Value>, _: &mut VM| {
+            let json_str = args[0].to_str()?;
+            let json: serde_json::Value = serde_json::from_str(&json_str)?;
+            json.try_into()
+        }),
         Builtin::new("genList", &[true, true], |args: Vec<Value>, vm: &mut VM| {
             let len = args[1].as_int()?;
             (0..len)