From 4a5c3fc0c4d3def3305b1bbee97f67e622e62623 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Nicolas=20Ludue=C3=B1a?= <nicolas.luduena@txpipe.io>
Date: Tue, 2 Dec 2025 00:14:41 -0300
Subject: [PATCH] feat: deserializable custom type params

---
 crates/tx3-lang/src/applying.rs | 4 ++++
 crates/tx3-lang/src/lib.rs      | 7 +++++++
 2 files changed, 11 insertions(+)

diff --git a/crates/tx3-lang/src/applying.rs b/crates/tx3-lang/src/applying.rs
index f517be69..e19ed7f5 100644
--- a/crates/tx3-lang/src/applying.rs
+++ b/crates/tx3-lang/src/applying.rs
@@ -294,6 +294,10 @@ fn arg_value_into_expr(arg: ArgValue) -> ir::Expression {
         ArgValue::Bytes(x) => ir::Expression::Bytes(x),
         ArgValue::UtxoSet(x) => ir::Expression::UtxoSet(x),
         ArgValue::UtxoRef(x) => ir::Expression::UtxoRefs(vec![x]),
+        ArgValue::Custom(x) => ir::Expression::Struct(ir::StructExpr {
+            constructor: x.constructor,
+            fields: x.fields.into_iter().map(arg_value_into_expr).collect(),
+        }),
     }
 }
 
diff --git a/crates/tx3-lang/src/lib.rs b/crates/tx3-lang/src/lib.rs
index 9f16de8f..e68aa3d4 100644
--- a/crates/tx3-lang/src/lib.rs
+++ b/crates/tx3-lang/src/lib.rs
@@ -92,6 +92,12 @@ impl Eq for Utxo {}
 
 pub type UtxoSet = HashSet<Utxo>;
 
+#[derive(Debug, Clone, serde::Serialize, serde::Deserialize)]
+pub struct CustomValue {
+    pub constructor: usize,
+    pub fields: Vec<ArgValue>,
+}
+
 #[derive(Debug, Clone, serde::Serialize, serde::Deserialize)]
 pub enum ArgValue {
     Int(i128),
@@ -101,6 +107,7 @@ pub enum ArgValue {
     Address(Vec<u8>),
     UtxoSet(UtxoSet),
     UtxoRef(UtxoRef),
+    Custom(CustomValue),
 }
 
 impl From<Vec<u8>> for ArgValue {