fix naming of helper attributes

Author: ModProg

CHANGELOG.md

@@ -5,7 +5,10 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
 ## [Unreleased]
+### Fixed
 - fix imports in `impl_Attribute_for_Parse_and_ToTokens!`
+### Added
+- allow `#[from_attr]` on top of `#[attribute]`
 
 ## [0.10.2] - 2024-10-30
 ### Added

macro/src/lib.rs

@@ -14,7 +14,7 @@ use quote_use::quote_use as quote;
 use syn::spanned::Spanned;
 use syn::{DataStruct, DeriveInput, Field, Fields, Generics, Ident, LitStr, Type, Visibility};
 
-const ATTRIBUTE_IDENT: &str = "attribute";
+const ATTRIBUTE_IDENTS: &[&str] = &["from_attr", "attribute", "attr"];
 
 #[allow(clippy::large_enum_variant)]
 enum StructError {
@@ -184,7 +184,7 @@ impl StructAttrs {
         // let mut duplicate: DuplicateStrategy = DuplicateStrategy::AggregateOrError;
         for attr in attrs
             .into_iter()
-            .filter(|attr| attr.path().is_ident(ATTRIBUTE_IDENT))
+            .filter(|attr| ATTRIBUTE_IDENTS.iter().any(|a| attr.path().is_ident(a)))
         {
             let parser = &mut attr
                 .meta
@@ -370,7 +370,7 @@ impl FieldAttrs {
 
         for attr in attrs
             .into_iter()
-            .filter(|attr| attr.path().is_ident(ATTRIBUTE_IDENT))
+            .filter(|attr| ATTRIBUTE_IDENTS.iter().any(|a| attr.path().is_ident(a)))
         {
             let mut parser = attr
                 .meta

src/lib.rs

@@ -3,19 +3,19 @@
 //! ```
 //! use attribute_derive::FromAttr;
 //! #[derive(FromAttr)]
-//! #[attribute(ident = attr_name)]
+//! #[from_attr(ident = attr_name)]
 //! // overriding the builtin error messages
-//! #[attribute(error(missing_field = "`{field}` was not specified"))]
+//! #[from_attr(error(missing_field = "`{field}` was not specified"))]
 //! struct MyAttribute {
 //!     // Positional values need to be specified before any named ones
-//!     #[attribute(positional)]
+//!     #[from_attr(positional)]
 //!     positional: u8,
 //!     // Options are optional by default (will be set to None if not specified)
 //!     optional: Option<String>,
 //!     required: String,
 //!     // Any type implementing default can be flagged as default
 //!     // This will be set to Vec::default() when not specified
-//!     #[attribute(optional)]
+//!     #[from_attr(optional)]
 //!     list: Vec<syn::Type>,
 //!     // Booleans can be used without assigning a value, i.e., as a flag.
 //!     // If omitted they are set to false