Feature: ABI crate

Cargo.toml

@@ -2,6 +2,9 @@
 resolver = "3"
 
 members = [
+  "data/abi",
+  "data/abi-derive-common",
+  "data/abi-derive",
   "data/codec",
   "data/codec-derive",
   "data/human-readable",

chain/core/Cargo.toml

@@ -31,7 +31,7 @@ sha3 = { version = "0.12", optional = true }
 ed25519-dalek = { version = "2.1", optional = true }
 
 [dependencies.multiversx-sc-codec]
-version = "=0.25.0"
+version = "0.25.0"
 path = "../../data/codec"
 features = ["derive"]
 

contracts/examples/multisig/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "multisig"
-version = "1.0.0"
+version = "0.0.0"
 authors = ["Andrei Marinica <andrei.marinica@multiversx.com>"]
 edition = "2024"
 publish = false

contracts/feature-tests/abi-tester/abi_tester_expected_main.abi.json

@@ -14,6 +14,10 @@
             "version": "0.0.0",
             "gitVersion": "<git version here>"
         },
+        "abi": {
+            "name": "multiversx-sc-abi",
+            "version": "0.25.0"
+        },
         "framework": {
             "name": "multiversx-sc",
             "version": "0.66.2"

contracts/feature-tests/abi-tester/abi_tester_expected_view.abi.json

@@ -14,6 +14,10 @@
             "version": "0.0.0",
             "gitVersion": "<git version here>"
         },
+        "abi": {
+            "name": "multiversx-sc-abi",
+            "version": "0.25.0"
+        },
         "framework": {
             "name": "multiversx-sc",
             "version": "0.66.2"

contracts/feature-tests/use-module/use_module_expected_main.abi.json

@@ -14,6 +14,10 @@
             "version": "0.0.0",
             "gitVersion": "<git version here>"
         },
+        "abi": {
+            "name": "multiversx-sc-abi",
+            "version": "0.25.0"
+        },
         "framework": {
             "name": "multiversx-sc",
             "version": "0.66.2"

contracts/feature-tests/use-module/use_module_expected_view.abi.json

@@ -14,6 +14,10 @@
             "version": "0.0.0",
             "gitVersion": "<git version here>"
         },
+        "abi": {
+            "name": "multiversx-sc-abi",
+            "version": "0.25.0"
+        },
         "framework": {
             "name": "multiversx-sc",
             "version": "0.66.2"

data/abi-derive-common/Cargo.toml

@@ -0,0 +1,28 @@
+[package]
+name = "multiversx-sc-abi-derive-common"
+version = "0.25.0"
+edition = "2024"
+publish = false
+
+authors = [
+    "Andrei Marinica <andrei.marinica@multiversx.com>",
+    "MultiversX <contact@multiversx.com>",
+]
+license = "GPL-3.0-only"
+readme = "README.md"
+repository = "https://github.com/multiversx/mx-sdk-rs"
+homepage = "https://multiversx.com/"
+documentation = "https://docs.multiversx.com/"
+description = "MultiversX ABI common functionality for derive macros"
+keywords = ["multiversx", "wasm", "webassembly", "blockchain", "contract"]
+categories = [
+    "no-std",
+    "wasm",
+    "cryptography::cryptocurrencies",
+    "development-tools",
+]
+
+[dependencies]
+proc-macro2 = "1.0"
+quote = "1.0"
+syn = { version = "2.0", features = ["full", "extra-traits"] }

data/abi-derive-common/README.md

@@ -0,0 +1,10 @@
+# multiversx-sc-abi-derive-common
+
+Common logic for the `TypeAbi` derive macros in MultiversX smart contracts.
+
+This is a regular library crate (not a proc-macro crate) that contains the shared implementation used by both `multiversx-sc-abi-derive` and `multiversx-sc-derive`.
+
+## Contents
+
+- **`type_abi_derive`** — generates `TypeAbi` trait implementations for structs and enums
+- **`parse`** — attribute parsing utilities (doc comments, macro attributes)

data/abi-derive-common/src/lib.rs

@@ -0,0 +1,13 @@
+// ensure we don't run out of macro stack
+#![recursion_limit = "1024"]
+// TODO: remove once minimum version is 1.87+
+#![allow(unknown_lints)]
+#![allow(clippy::collapsible_if)]
+#![allow(clippy::manual_is_multiple_of)]
+
+/// Common code for derive macros, shared between `data/abi-derive` and `framework/derive`.
+pub mod parse;
+
+mod type_abi_derive;
+
+pub use type_abi_derive::{TypeAbiImportCrate, type_abi_derive, type_abi_full};

data/abi-derive-common/src/parse.rs

@@ -0,0 +1 @@
+pub mod attributes;

framework/derive/src/parse/attributes/doc_attr.rs → data/abi-derive-common/src/parse/attributes.rs

@@ -1,14 +1,10 @@
 use quote::ToTokens;
 
-use super::{attr_names::*, util::*};
-
-/// unlike the others, this is standard Rust,
-/// all doc comments get automatically transformed into "doc" attributes
-static ATTR_DOC: &str = "doc";
-
 /// Doc comments are actually syntactic sugar for doc attributes,
 /// so extracting doc comments means parsing "doc" attributes.
 pub fn extract_doc(attrs: &[syn::Attribute]) -> Vec<String> {
+    const ATTR_DOC: &str = "doc";
+
     attrs
         .iter()
         .filter(|attr| {
@@ -79,25 +75,3 @@ fn remove_backslashes(input: &str) -> String {
         .replace("\\\"", "\"")
         .replace("\\'", "'")
 }
-
-pub struct OutputNameAttribute {
-    pub output_name: String,
-}
-
-impl OutputNameAttribute {
-    pub fn parse(attr: &syn::Attribute) -> Option<Self> {
-        is_attr_one_string_arg(attr, ATTR_OUTPUT_NAME).map(|arg_str| OutputNameAttribute {
-            output_name: arg_str,
-        })
-    }
-}
-
-pub struct TitleAttribute {
-    pub title: String,
-}
-
-impl TitleAttribute {
-    pub fn parse(attr: &syn::Attribute) -> Option<Self> {
-        is_attr_one_string_arg(attr, ATTR_TITLE).map(|arg_str| TitleAttribute { title: arg_str })
-    }
-}