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Diffstat (limited to 'mingling_macros/src/chain_struct.rs')
| -rw-r--r-- | mingling_macros/src/chain_struct.rs | 162 |
1 files changed, 0 insertions, 162 deletions
diff --git a/mingling_macros/src/chain_struct.rs b/mingling_macros/src/chain_struct.rs deleted file mode 100644 index 7305a67..0000000 --- a/mingling_macros/src/chain_struct.rs +++ /dev/null @@ -1,162 +0,0 @@ -//! Chain Struct Macro Implementation -//! -//! This module provides the `chain_struct!` macro for creating wrapper types -//! with automatic implementations of common traits. - -use proc_macro::TokenStream; -use quote::quote; -use syn::parse::{Parse, ParseStream}; -use syn::{Ident, Result as SynResult, Token, Type}; - -/// Parses input in the format: `TypeName = InnerType` -struct ChainStructInput { - type_name: Ident, - inner_type: Type, -} - -impl Parse for ChainStructInput { - fn parse(input: ParseStream) -> SynResult<Self> { - let type_name = input.parse()?; - input.parse::<Token![=]>()?; - let inner_type = input.parse()?; - - Ok(ChainStructInput { - type_name, - inner_type, - }) - } -} - -pub fn chain_struct(input: TokenStream) -> TokenStream { - let ChainStructInput { - type_name, - inner_type, - } = syn::parse_macro_input!(input as ChainStructInput); - - // Generate the struct definition - #[cfg(not(feature = "serde"))] - let struct_def = quote! { - #[derive(Debug)] - pub struct #type_name { - inner: #inner_type, - } - }; - - #[cfg(feature = "serde")] - let struct_def = quote! { - #[derive(Debug, serde::Serialize)] - pub struct #type_name { - inner: #inner_type, - } - }; - - // Generate the new() method - let new_impl = quote! { - impl #type_name { - /// Creates a new instance of the wrapper type - pub fn new(inner: #inner_type) -> Self { - Self { inner } - } - } - }; - - // Generate From and Into implementations - let from_into_impl = quote! { - impl From<#inner_type> for #type_name { - fn from(inner: #inner_type) -> Self { - Self::new(inner) - } - } - - impl From<#type_name> for #inner_type { - fn from(wrapper: #type_name) -> #inner_type { - wrapper.inner - } - } - }; - - // Generate AsRef and AsMut implementations - let as_ref_impl = quote! { - impl ::std::convert::AsRef<#inner_type> for #type_name { - fn as_ref(&self) -> &#inner_type { - &self.inner - } - } - - impl ::std::convert::AsMut<#inner_type> for #type_name { - fn as_mut(&mut self) -> &mut #inner_type { - &mut self.inner - } - } - }; - - // Generate Deref and DerefMut implementations - let deref_impl = quote! { - impl ::std::ops::Deref for #type_name { - type Target = #inner_type; - - fn deref(&self) -> &Self::Target { - &self.inner - } - } - - impl ::std::ops::DerefMut for #type_name { - fn deref_mut(&mut self) -> &mut Self::Target { - &mut self.inner - } - } - }; - - // Check if the inner type implements Default by generating conditional code - let default_impl = quote! { - impl ::std::default::Default for #type_name - where - #inner_type: ::std::default::Default, - { - fn default() -> Self { - Self::new(::std::default::Default::default()) - } - } - }; - - let any_out_impl = quote! { - impl Into<mingling::AnyOutput> for #type_name { - fn into(self) -> mingling::AnyOutput { - mingling::AnyOutput::new(self) - } - } - - impl Into<mingling::ChainProcess> for #type_name { - fn into(self) -> mingling::ChainProcess { - mingling::AnyOutput::new(self).route_chain() - } - } - - impl #type_name { - /// Converts the wrapper type into a `ChainProcess` for chaining operations. - pub fn to_chain(self) -> mingling::ChainProcess { - mingling::AnyOutput::new(self).route_chain() - } - - /// Converts the wrapper type into a `ChainProcess` for rendering operations. - pub fn to_render(self) -> mingling::ChainProcess { - mingling::AnyOutput::new(self).route_renderer() - } - } - }; - - // Combine all implementations - let expanded = quote! { - #struct_def - - #new_impl - #from_into_impl - #as_ref_impl - #deref_impl - #default_impl - - #any_out_impl - }; - - expanded.into() -} |
