refactor(merge): use existing merge create

This commit is contained in:
2025-07-10 14:49:25 +03:00
parent 8b82d09318
commit b341b7a661
15 changed files with 230 additions and 714 deletions

297
derive_macro/Cargo.lock generated
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@@ -1,15 +0,0 @@
[package]
name = "derive_macro"
version = "0.1.0"
edition = "2024"
[lib]
crate-type = ["proc-macro"]
[dependencies]
proc-macro2 = "1.0"
quote = "1.0"
syn = { version = "2.0", features = ["full", "extra-traits"] }
[dev-dependencies]
trybuild = "1.0"

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@@ -1,10 +0,0 @@
mod merge;
use proc_macro::TokenStream;
use syn::{DeriveInput, parse_macro_input};
#[proc_macro_derive(Merge)]
pub fn merge_derive(input: TokenStream) -> TokenStream {
let input = parse_macro_input!(input as DeriveInput);
merge::impl_merge_derive(input)
}

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@@ -1,58 +0,0 @@
use proc_macro::TokenStream;
use quote::quote;
use syn::{Data, DeriveInput, Fields, Type};
pub fn impl_merge_derive(input: DeriveInput) -> TokenStream {
let name = &input.ident;
let (impl_generics, ty_generics, where_clause) = input.generics.split_for_impl();
let fields = match input.data {
Data::Struct(data) => match data.fields {
Fields::Named(fields) => fields.named,
_ => unimplemented!("Only named fields are supported for Merge derive macro"),
},
_ => unimplemented!("Only structs are supported for Merge derive macro"),
};
let merge_logic = fields.iter().map(|field| {
let field_name = &field.ident;
let field_type = &field.ty;
// Check if the field is an Option<T>
if let Type::Path(type_path) = field_type {
if let Some(segment) = type_path.path.segments.last() {
if segment.ident == "Option" {
// This is an Option<T> field
return quote! {
if let Some(o_val) = other.#field_name {
if let Some(s_val) = self.#field_name.as_mut() {
// If both are Some, attempt to merge recursively
s_val.merge(o_val);
} else {
// If self is None, take the other's Some value
self.#field_name = Some(o_val);
}
}
// If other is None, self remains unchanged
};
}
}
}
// For non-Option fields, attempt to merge recursively
quote! {
self.#field_name.merge(other.#field_name);
}
});
let expanded = quote! {
impl #impl_generics Merge for #name #ty_generics #where_clause {
fn merge(&mut self, other: Self) {
#(#merge_logic)*
}
}
};
expanded.into()
}