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authorHampusM <hampus@hampusmat.com>2022-07-20 14:29:45 +0200
committerHampusM <hampus@hampusmat.com>2022-07-20 14:29:45 +0200
commit2d1a6b2d432408d74eb57e0bda3f7434617e1070 (patch)
tree7e21f8126edfdfd9c40b4b51ba5626c6440442d9 /syrette_macros/src/factory_type_alias.rs
parent7863d9859a5cbce99c3769e4fdb40283115d358d (diff)
refactor: reorganize folder hierarchy
Diffstat (limited to 'syrette_macros/src/factory_type_alias.rs')
-rw-r--r--syrette_macros/src/factory_type_alias.rs84
1 files changed, 0 insertions, 84 deletions
diff --git a/syrette_macros/src/factory_type_alias.rs b/syrette_macros/src/factory_type_alias.rs
deleted file mode 100644
index 8ea7baa..0000000
--- a/syrette_macros/src/factory_type_alias.rs
+++ /dev/null
@@ -1,84 +0,0 @@
-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(),
- })
- }
-}