From e0f90a8e384615c79d7d51c66d19294d75e79391 Mon Sep 17 00:00:00 2001
From: HampusM <hampus@hampusmat.com>
Date: Sat, 27 Aug 2022 23:41:41 +0200
Subject: feat: implement named bindings

---
 macros/src/lib.rs | 107 +++++++++++++++++++++++++++++++++++++++++++++++++++---
 1 file changed, 101 insertions(+), 6 deletions(-)

(limited to 'macros/src/lib.rs')

diff --git a/macros/src/lib.rs b/macros/src/lib.rs
index 9b97be6..c7157c8 100644
--- a/macros/src/lib.rs
+++ b/macros/src/lib.rs
@@ -9,11 +9,12 @@ use quote::quote;
 use syn::{parse, parse_macro_input};
 
 mod declare_interface_args;
-mod dependency_type;
+mod dependency;
 mod factory_type_alias;
 mod injectable_impl;
 mod injectable_macro_args;
 mod libs;
+mod named_attr_input;
 mod util;
 
 use declare_interface_args::DeclareInterfaceArgs;
@@ -38,15 +39,60 @@ use libs::intertrait_macros::gen_caster::generate_caster;
 /// declare the interface with the [`declare_interface!`] macro or use
 /// the [`di_container_bind`] macro to create a DI container binding.
 ///
-/// # Example
+/// # Attributes
+/// Attributes specific to impls with this attribute macro.
+///
+/// ### Named
+/// Used inside the `new` method before a dependency argument. Declares the name of the
+/// dependency. Should be given the name quoted inside parenthesis.
+///
+/// The [`macro@named`] ghost attribute macro can be used for intellisense and
+/// autocompletion for this attribute.
+///
+/// For example:
 /// ```
-/// use syrette::injectable;
+/// # use syrette::ptr::TransientPtr;
+/// # use syrette::injectable;
+/// #
+/// # trait IArmor {}
+/// #
+/// # trait IKnight {}
+/// #
+/// # struct Knight
+/// # {
+/// #     tough_armor: TransientPtr<dyn IArmor>,
+/// #     light_armor: TransientPtr<dyn IArmor>,
+/// # }
+/// #
+/// #[injectable(IKnight)]
+/// impl Knight
+/// {
+///     pub fn new(
+///         #[named("tough")]
+///         tough_armor: TransientPtr<dyn IArmor>,
 ///
-/// struct PasswordManager {}
+///         #[named("light")]
+///         light_armor: TransientPtr<dyn IArmor>
+///     ) -> Self
+///     {
+///         Self { tough_armor, light_armor }
+///     }
+/// }
+/// #
+/// # impl IKnight for Knight {}
+/// ```
 ///
+/// # Example
+/// ```
+/// # use syrette::injectable;
+/// #
+/// # struct PasswordManager {}
+/// #
 /// #[injectable]
-/// impl PasswordManager {
-///     pub fn new() -> Self {
+/// impl PasswordManager
+/// {
+///     pub fn new() -> Self
+///     {
 ///         Self {}
 ///     }
 /// }
@@ -191,3 +237,52 @@ pub fn declare_interface(input: TokenStream) -> TokenStream
 
     generate_caster(&implementation, &interface).into()
 }
+
+/// Declares the name of a dependency.
+///
+/// This macro attribute doesn't actually do anything. It only exists for the
+/// convenience of having intellisense and autocompletion.
+/// You might as well just use `named` if you don't care about that.
+///
+/// Only means something inside a `new` method inside a impl with
+/// the [`macro@injectable`] macro attribute.
+///
+/// # Examples
+/// ```
+/// # use syrette::ptr::TransientPtr;
+/// # use syrette::injectable;
+/// #
+/// # trait INinja {}
+/// # trait IWeapon {}
+/// #
+/// # struct Ninja
+/// # {
+/// #   strong_weapon: TransientPtr<dyn IWeapon>,
+/// #   weak_weapon: TransientPtr<dyn IWeapon>,
+/// # }
+/// #
+/// #[injectable(INinja)]
+/// impl Ninja
+/// {
+///     pub fn new(
+///         #[syrette::named("strong")]
+///         strong_weapon: TransientPtr<dyn IWeapon>,
+///
+///         #[syrette::named("weak")]
+///         weak_weapon: TransientPtr<dyn IWeapon>,
+///     ) -> Self
+///     {
+///         Self {
+///             strong_weapon,
+///             weak_weapon,
+///         }
+///     }
+/// }
+/// #
+/// # impl INinja for Ninja {}
+/// ```
+#[proc_macro_attribute]
+pub fn named(_: TokenStream, _: TokenStream) -> TokenStream
+{
+    TokenStream::new()
+}
-- 
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