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-rw-r--r--macros/src/declare_interface_args.rs23
-rw-r--r--macros/src/factory_type_alias.rs84
-rw-r--r--macros/src/injectable_impl.rs245
-rw-r--r--macros/src/injectable_macro_args.rs17
-rw-r--r--macros/src/lib.rs96
-rw-r--r--macros/src/libs/intertrait_macros/LICENSE-APACHE176
-rw-r--r--macros/src/libs/intertrait_macros/LICENSE-MIT17
-rw-r--r--macros/src/libs/intertrait_macros/gen_caster.rs55
-rw-r--r--macros/src/libs/intertrait_macros/mod.rs14
-rw-r--r--macros/src/libs/mod.rs1
10 files changed, 728 insertions, 0 deletions
diff --git a/macros/src/declare_interface_args.rs b/macros/src/declare_interface_args.rs
new file mode 100644
index 0000000..b54f458
--- /dev/null
+++ b/macros/src/declare_interface_args.rs
@@ -0,0 +1,23 @@
+use syn::parse::{Parse, ParseStream, Result};
+use syn::{Path, Token, Type};
+
+pub struct DeclareInterfaceArgs
+{
+ pub implementation: Type,
+ pub interface: Path,
+}
+
+impl Parse for DeclareInterfaceArgs
+{
+ fn parse(input: ParseStream) -> Result<Self>
+ {
+ let implementation: Type = input.parse()?;
+
+ input.parse::<Token![->]>()?;
+
+ Ok(Self {
+ implementation,
+ interface: input.parse()?,
+ })
+ }
+}
diff --git a/macros/src/factory_type_alias.rs b/macros/src/factory_type_alias.rs
new file mode 100644
index 0000000..8ea7baa
--- /dev/null
+++ b/macros/src/factory_type_alias.rs
@@ -0,0 +1,84 @@
+use syn::parse::{Parse, ParseStream};
+use syn::{GenericArgument, ItemType, Path, Type, TypeParamBound, TypeTuple};
+
+pub struct FactoryTypeAlias
+{
+ pub type_alias: ItemType,
+ pub factory_interface: Path,
+ pub arg_types: TypeTuple,
+ pub return_type: Type,
+}
+
+impl Parse for FactoryTypeAlias
+{
+ #[allow(clippy::match_wildcard_for_single_variants)]
+ fn parse(input: ParseStream) -> syn::Result<Self>
+ {
+ let type_alias = match input.parse::<ItemType>() {
+ Ok(type_alias) => Ok(type_alias),
+ Err(_) => Err(input.error("Expected a type alias")),
+ }?;
+
+ let aliased_trait = match &type_alias.ty.as_ref() {
+ Type::TraitObject(alias_type) => Ok(alias_type),
+ &_ => Err(input.error("Expected the aliased type to be a trait")),
+ }?;
+
+ if aliased_trait.bounds.len() != 1 {
+ return Err(input.error("Expected the aliased trait to have a single bound."));
+ }
+
+ let bound_path = &match aliased_trait.bounds.first().unwrap() {
+ TypeParamBound::Trait(trait_bound) => Ok(trait_bound),
+ &_ => {
+ Err(input.error("Expected the bound of the aliased trait to be a trait"))
+ }
+ }?
+ .path;
+
+ if bound_path.segments.is_empty()
+ || bound_path.segments.last().unwrap().ident != "IFactory"
+ {
+ return Err(input
+ .error("Expected the bound of the aliased trait to be 'dyn IFactory'"));
+ }
+
+ let angle_bracketed_args = match &bound_path.segments.last().unwrap().arguments {
+ syn::PathArguments::AngleBracketed(angle_bracketed_args) => {
+ Ok(angle_bracketed_args)
+ }
+ &_ => {
+ Err(input.error("Expected angle bracketed arguments for 'dyn IFactory'"))
+ }
+ }?;
+
+ let arg_types = match &angle_bracketed_args.args[0] {
+ GenericArgument::Type(arg_types_type) => match arg_types_type {
+ Type::Tuple(arg_types) => Ok(arg_types),
+ &_ => Err(input.error(concat!(
+ "Expected the first angle bracketed argument ",
+ "of 'dyn IFactory' to be a type tuple"
+ ))),
+ },
+ &_ => Err(input.error(concat!(
+ "Expected the first angle bracketed argument ",
+ "of 'dyn IFactory' to be a type"
+ ))),
+ }?;
+
+ let return_type = match &angle_bracketed_args.args[1] {
+ GenericArgument::Type(arg_type) => Ok(arg_type),
+ &_ => Err(input.error(concat!(
+ "Expected the second angle bracketed argument ",
+ "of 'dyn IFactory' to be a type"
+ ))),
+ }?;
+
+ Ok(Self {
+ type_alias: type_alias.clone(),
+ factory_interface: bound_path.clone(),
+ arg_types: arg_types.clone(),
+ return_type: return_type.clone(),
+ })
+ }
+}
diff --git a/macros/src/injectable_impl.rs b/macros/src/injectable_impl.rs
new file mode 100644
index 0000000..3000253
--- /dev/null
+++ b/macros/src/injectable_impl.rs
@@ -0,0 +1,245 @@
+use quote::{quote, ToTokens};
+use syn::parse::{Parse, ParseStream};
+use syn::{
+ parse_str, punctuated::Punctuated, token::Comma, ExprMethodCall, FnArg,
+ GenericArgument, Ident, ImplItem, ImplItemMethod, ItemImpl, Path, PathArguments,
+ Type, TypePath,
+};
+
+const DI_CONTAINER_VAR_NAME: &str = "di_container";
+
+pub struct InjectableImpl
+{
+ pub dependency_types: Vec<Type>,
+ pub self_type: Type,
+ pub original_impl: ItemImpl,
+}
+
+impl Parse for InjectableImpl
+{
+ fn parse(input: ParseStream) -> syn::Result<Self>
+ {
+ match input.parse::<ItemImpl>() {
+ Ok(impl_parsed_input) => {
+ match Self::_get_dependency_types(&impl_parsed_input) {
+ Ok(dependency_types) => Ok(Self {
+ dependency_types,
+ self_type: impl_parsed_input.self_ty.as_ref().clone(),
+ original_impl: impl_parsed_input,
+ }),
+ Err(error_msg) => Err(input.error(error_msg)),
+ }
+ }
+ Err(_) => Err(input.error("Expected an impl")),
+ }
+ }
+}
+
+impl InjectableImpl
+{
+ pub fn expand(&self) -> proc_macro2::TokenStream
+ {
+ let original_impl = &self.original_impl;
+ let self_type = &self.self_type;
+
+ let di_container_var: Ident = parse_str(DI_CONTAINER_VAR_NAME).unwrap();
+
+ let get_dependencies = Self::_create_get_dependencies(&self.dependency_types);
+
+ quote! {
+ #original_impl
+
+ impl syrette::interfaces::injectable::Injectable for #self_type {
+ fn resolve(
+ #di_container_var: &syrette::DIContainer
+ ) -> error_stack::Result<
+ syrette::ptr::InterfacePtr<Self>,
+ syrette::errors::injectable::ResolveError>
+ {
+ use error_stack::ResultExt;
+
+ return Ok(syrette::ptr::InterfacePtr::new(Self::new(
+ #(#get_dependencies
+ .change_context(syrette::errors::injectable::ResolveError)
+ .attach_printable(
+ format!(
+ "Unable to resolve a dependency of {}",
+ std::any::type_name::<#self_type>()
+ )
+ )?
+ ),*
+ )));
+ }
+ }
+ }
+ }
+
+ fn _create_get_dependencies(dependency_types: &[Type]) -> Vec<ExprMethodCall>
+ {
+ dependency_types
+ .iter()
+ .filter_map(|dep_type| match dep_type {
+ Type::TraitObject(dep_type_trait) => Some(
+ parse_str(
+ format!(
+ "{}.get::<{}>()",
+ DI_CONTAINER_VAR_NAME,
+ dep_type_trait.to_token_stream()
+ )
+ .as_str(),
+ )
+ .unwrap(),
+ ),
+ Type::Path(dep_type_path) => {
+ let dep_type_path_str = Self::_path_to_string(&dep_type_path.path);
+
+ let get_method_name = if dep_type_path_str.ends_with("Factory") {
+ "get_factory"
+ } else {
+ "get"
+ };
+
+ Some(
+ parse_str(
+ format!(
+ "{}.{}::<{}>()",
+ DI_CONTAINER_VAR_NAME, get_method_name, dep_type_path_str
+ )
+ .as_str(),
+ )
+ .unwrap(),
+ )
+ }
+ &_ => None,
+ })
+ .collect()
+ }
+
+ fn _find_method_by_name<'impl_lt>(
+ item_impl: &'impl_lt ItemImpl,
+ method_name: &'static str,
+ ) -> Option<&'impl_lt ImplItemMethod>
+ {
+ let impl_items = &item_impl.items;
+
+ impl_items
+ .iter()
+ .filter_map(|impl_item| match impl_item {
+ ImplItem::Method(method_item) => Some(method_item),
+ &_ => None,
+ })
+ .find(|method_item| method_item.sig.ident == method_name)
+ }
+
+ #[allow(clippy::match_wildcard_for_single_variants)]
+ fn get_has_fn_args_self(fn_args: &Punctuated<FnArg, Comma>) -> bool
+ {
+ fn_args.iter().any(|arg| match arg {
+ FnArg::Receiver(_) => true,
+ &_ => false,
+ })
+ }
+
+ fn _get_fn_arg_type_paths(fn_args: &Punctuated<FnArg, Comma>) -> Vec<&TypePath>
+ {
+ fn_args
+ .iter()
+ .filter_map(|arg| match arg {
+ FnArg::Typed(typed_fn_arg) => match typed_fn_arg.ty.as_ref() {
+ Type::Path(arg_type_path) => Some(arg_type_path),
+ Type::Reference(ref_type_path) => match ref_type_path.elem.as_ref() {
+ Type::Path(arg_type_path) => Some(arg_type_path),
+ &_ => None,
+ },
+ &_ => None,
+ },
+ FnArg::Receiver(_receiver_fn_arg) => None,
+ })
+ .collect()
+ }
+
+ fn _path_to_string(path: &Path) -> String
+ {
+ path.segments
+ .pairs()
+ .fold(String::new(), |mut acc, segment_pair| {
+ let segment_ident = &segment_pair.value().ident;
+
+ acc.push_str(segment_ident.to_string().as_str());
+
+ let opt_colon_two = segment_pair.punct();
+
+ match opt_colon_two {
+ Some(colon_two) => {
+ acc.push_str(colon_two.to_token_stream().to_string().as_str());
+ }
+ None => {}
+ }
+
+ acc
+ })
+ }
+
+ fn _is_type_path_ptr(type_path: &TypePath) -> bool
+ {
+ let arg_type_path_string = Self::_path_to_string(&type_path.path);
+
+ arg_type_path_string == "InterfacePtr"
+ || arg_type_path_string == "ptr::InterfacePtr"
+ || arg_type_path_string == "syrrete::ptr::InterfacePtr"
+ || arg_type_path_string == "FactoryPtr"
+ || arg_type_path_string == "ptr::FactoryPtr"
+ || arg_type_path_string == "syrrete::ptr::FactoryPtr"
+ }
+
+ fn _get_dependency_types(item_impl: &ItemImpl) -> Result<Vec<Type>, &'static str>
+ {
+ let new_method_impl_item = match Self::_find_method_by_name(item_impl, "new") {
+ Some(method_item) => Ok(method_item),
+ None => Err("Missing a 'new' method"),
+ }?;
+
+ let new_method_args = &new_method_impl_item.sig.inputs;
+
+ if Self::get_has_fn_args_self(new_method_args) {
+ return Err("Unexpected self argument in 'new' method");
+ }
+
+ let new_method_arg_type_paths = Self::_get_fn_arg_type_paths(new_method_args);
+
+ if new_method_arg_type_paths
+ .iter()
+ .any(|arg_type_path| !Self::_is_type_path_ptr(arg_type_path))
+ {
+ return Err("All argument types in 'new' method must ptr types");
+ }
+
+ Ok(new_method_arg_type_paths
+ .iter()
+ .filter_map(|arg_type_path| {
+ // Assume the type path has a last segment.
+ let last_path_segment = arg_type_path.path.segments.last().unwrap();
+
+ match &last_path_segment.arguments {
+ PathArguments::AngleBracketed(angle_bracketed_generic_args) => {
+ let generic_args = &angle_bracketed_generic_args.args;
+
+ let opt_first_generic_arg = generic_args.first();
+
+ // Assume a first generic argument exists because InterfacePtr and
+ // FactoryPtr requires one
+ let first_generic_arg = opt_first_generic_arg.as_ref().unwrap();
+
+ match first_generic_arg {
+ GenericArgument::Type(first_generic_arg_type) => {
+ Some(first_generic_arg_type.clone())
+ }
+ &_ => None,
+ }
+ }
+ &_ => None,
+ }
+ })
+ .collect())
+ }
+}
diff --git a/macros/src/injectable_macro_args.rs b/macros/src/injectable_macro_args.rs
new file mode 100644
index 0000000..4ef4389
--- /dev/null
+++ b/macros/src/injectable_macro_args.rs
@@ -0,0 +1,17 @@
+use syn::parse::{Parse, ParseStream};
+use syn::TypePath;
+
+pub struct InjectableMacroArgs
+{
+ pub interface: TypePath,
+}
+
+impl Parse for InjectableMacroArgs
+{
+ fn parse(input: ParseStream) -> syn::Result<Self>
+ {
+ Ok(Self {
+ interface: input.parse()?,
+ })
+ }
+}
diff --git a/macros/src/lib.rs b/macros/src/lib.rs
new file mode 100644
index 0000000..ed1a509
--- /dev/null
+++ b/macros/src/lib.rs
@@ -0,0 +1,96 @@
+#![deny(clippy::all)]
+#![deny(clippy::pedantic)]
+
+use proc_macro::TokenStream;
+use quote::quote;
+use syn::{parse, parse_macro_input};
+
+mod declare_interface_args;
+mod factory_type_alias;
+mod injectable_impl;
+mod injectable_macro_args;
+mod libs;
+
+use declare_interface_args::DeclareInterfaceArgs;
+use factory_type_alias::FactoryTypeAlias;
+use injectable_impl::InjectableImpl;
+use injectable_macro_args::InjectableMacroArgs;
+use libs::intertrait_macros::gen_caster::generate_caster;
+
+/// Makes a struct injectable. Thereby usable with `DIContainer`.
+///
+/// # Arguments
+/// * A interface trait the struct implements.
+///
+/// # Panics
+/// If the attributed item is not a impl.
+#[proc_macro_attribute]
+pub fn injectable(args_stream: TokenStream, impl_stream: TokenStream) -> TokenStream
+{
+ let InjectableMacroArgs {
+ interface: interface_type_path,
+ } = parse_macro_input!(args_stream);
+
+ let injectable_impl: InjectableImpl = parse(impl_stream).unwrap();
+
+ let expanded_injectable_impl = injectable_impl.expand();
+
+ let self_type = &injectable_impl.self_type;
+
+ quote! {
+ #expanded_injectable_impl
+
+ syrette::declare_interface!(#self_type -> #interface_type_path);
+ }
+ .into()
+}
+
+/// Makes a type alias usable as a factory interface.
+///
+/// # Panics
+/// If the attributed item is not a type alias.
+#[proc_macro_attribute]
+pub fn factory(_: TokenStream, type_alias_stream: TokenStream) -> TokenStream
+{
+ let FactoryTypeAlias {
+ type_alias,
+ factory_interface,
+ arg_types,
+ return_type,
+ } = parse(type_alias_stream).unwrap();
+
+ quote! {
+ #type_alias
+
+ syrette::declare_interface!(
+ syrette::castable_factory::CastableFactory<
+ #arg_types,
+ #return_type
+ > -> #factory_interface
+ );
+
+ syrette::declare_interface!(
+ syrette::castable_factory::CastableFactory<
+ #arg_types,
+ #return_type
+ > -> syrette::castable_factory::AnyFactory
+ );
+ }
+ .into()
+}
+
+/// Declares the interface trait of a implementation.
+///
+/// # Arguments
+/// {Implementation} -> {Interface}
+///
+#[proc_macro]
+pub fn declare_interface(input: TokenStream) -> TokenStream
+{
+ let DeclareInterfaceArgs {
+ implementation,
+ interface,
+ } = parse_macro_input!(input);
+
+ generate_caster(&implementation, &interface).into()
+}
diff --git a/macros/src/libs/intertrait_macros/LICENSE-APACHE b/macros/src/libs/intertrait_macros/LICENSE-APACHE
new file mode 100644
index 0000000..d9a10c0
--- /dev/null
+++ b/macros/src/libs/intertrait_macros/LICENSE-APACHE
@@ -0,0 +1,176 @@
+ Apache License
+ Version 2.0, January 2004
+ http://www.apache.org/licenses/
+
+ TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+ 1. Definitions.
+
+ "License" shall mean the terms and conditions for use, reproduction,
+ and distribution as defined by Sections 1 through 9 of this document.
+
+ "Licensor" shall mean the copyright owner or entity authorized by
+ the copyright owner that is granting the License.
+
+ "Legal Entity" shall mean the union of the acting entity and all
+ other entities that control, are controlled by, or are under common
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+ "control" means (i) the power, direct or indirect, to cause the
+ direction or management of such entity, whether by contract or
+ otherwise, or (ii) ownership of fifty percent (50%) or more of the
+ outstanding shares, or (iii) beneficial ownership of such entity.
+
+ "You" (or "Your") shall mean an individual or Legal Entity
+ exercising permissions granted by this License.
+
+ "Source" form shall mean the preferred form for making modifications,
+ including but not limited to software source code, documentation
+ source, and configuration files.
+
+ "Object" form shall mean any form resulting from mechanical
+ transformation or translation of a Source form, including but
+ not limited to compiled object code, generated documentation,
+ and conversions to other media types.
+
+ "Work" shall mean the work of authorship, whether in Source or
+ Object form, made available under the License, as indicated by a
+ copyright notice that is included in or attached to the work
+ (an example is provided in the Appendix below).
+
+ "Derivative Works" shall mean any work, whether in Source or Object
+ form, that is based on (or derived from) the Work and for which the
+ editorial revisions, annotations, elaborations, or other modifications
+ represent, as a whole, an original work of authorship. For the purposes
+ of this License, Derivative Works shall not include works that remain
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+ "Contribution" shall mean any work of authorship, including
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+ Licensor for the purpose of discussing and improving the Work, but
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+ "Contributor" shall mean Licensor and any individual or Legal Entity
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+ 2. Grant of Copyright License. Subject to the terms and conditions of
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+ meet the following conditions:
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+ (a) You must give any other recipients of the Work or
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+ (b) You must cause any modified files to carry prominent notices
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+ (c) You must retain, in the Source form of any Derivative Works
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+ 5. Submission of Contributions. Unless You explicitly state otherwise,
+ any Contribution intentionally submitted for inclusion in the Work
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+ 6. Trademarks. This License does not grant permission to use the trade
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+
+ END OF TERMS AND CONDITIONS
diff --git a/macros/src/libs/intertrait_macros/LICENSE-MIT b/macros/src/libs/intertrait_macros/LICENSE-MIT
new file mode 100644
index 0000000..969d061
--- /dev/null
+++ b/macros/src/libs/intertrait_macros/LICENSE-MIT
@@ -0,0 +1,17 @@
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/macros/src/libs/intertrait_macros/gen_caster.rs b/macros/src/libs/intertrait_macros/gen_caster.rs
new file mode 100644
index 0000000..9126200
--- /dev/null
+++ b/macros/src/libs/intertrait_macros/gen_caster.rs
@@ -0,0 +1,55 @@
+/**
+ * Originally from Intertrait by CodeChain
+ *
+ * <https://github.com/CodeChain-io/intertrait>
+ * <https://crates.io/crates/intertrait/0.2.2>
+ *
+ * Licensed under either of
+ *
+ * Apache License, Version 2.0 (LICENSE-APACHE or <http://www.apache.org/licenses/LICENSE-2.0>)
+ * MIT license (LICENSE-MIT or <http://opensource.org/licenses/MIT>)
+
+ * at your option.
+*/
+use std::str::from_utf8_unchecked;
+
+use proc_macro2::TokenStream;
+use quote::format_ident;
+use quote::quote;
+use quote::ToTokens;
+use uuid::adapter::Simple;
+use uuid::Uuid;
+
+pub fn generate_caster(ty: &impl ToTokens, trait_: &impl ToTokens) -> TokenStream
+{
+ let mut fn_buf = [0u8; FN_BUF_LEN];
+
+ let fn_ident = format_ident!("{}", new_fn_name(&mut fn_buf));
+
+ let new_caster = quote! {
+ syrette::libs::intertrait::Caster::<dyn #trait_>::new(
+ |from| from.downcast::<#ty>().unwrap(),
+ |from| from.downcast::<#ty>().unwrap(),
+ )
+ };
+
+ quote! {
+ #[syrette::libs::linkme::distributed_slice(syrette::libs::intertrait::CASTERS)]
+ #[linkme(crate = syrette::libs::linkme)]
+ fn #fn_ident() -> (::std::any::TypeId, syrette::libs::intertrait::BoxedCaster) {
+ (::std::any::TypeId::of::<#ty>(), Box::new(#new_caster))
+ }
+ }
+}
+
+const FN_PREFIX: &[u8] = b"__";
+const FN_BUF_LEN: usize = FN_PREFIX.len() + Simple::LENGTH;
+
+fn new_fn_name(buf: &mut [u8]) -> &str
+{
+ buf[..FN_PREFIX.len()].copy_from_slice(FN_PREFIX);
+ Uuid::new_v4()
+ .to_simple()
+ .encode_lower(&mut buf[FN_PREFIX.len()..]);
+ unsafe { from_utf8_unchecked(&buf[..FN_BUF_LEN]) }
+}
diff --git a/macros/src/libs/intertrait_macros/mod.rs b/macros/src/libs/intertrait_macros/mod.rs
new file mode 100644
index 0000000..fa8c021
--- /dev/null
+++ b/macros/src/libs/intertrait_macros/mod.rs
@@ -0,0 +1,14 @@
+/**
+ * Originally from Intertrait by CodeChain
+ *
+ * <https://github.com/CodeChain-io/intertrait>
+ * <https://crates.io/crates/intertrait/0.2.2>
+ *
+ * Licensed under either of
+ *
+ * Apache License, Version 2.0 (LICENSE-APACHE or <http://www.apache.org/licenses/LICENSE-2.0>)
+ * MIT license (LICENSE-MIT or <http://opensource.org/licenses/MIT>)
+
+ * at your option.
+*/
+pub mod gen_caster;
diff --git a/macros/src/libs/mod.rs b/macros/src/libs/mod.rs
new file mode 100644
index 0000000..e4964de
--- /dev/null
+++ b/macros/src/libs/mod.rs
@@ -0,0 +1 @@
+pub mod intertrait_macros;