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feat(serde): make serde optional default

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This commit is contained in:
Kristofers Solo
2025-07-15 14:40:36 +03:00
parent 337491b37f
commit db1dab2aa1
5 changed files with 26 additions and 46 deletions
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44
filecaster-derive/src/from_file.rs
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@@ -1,5 +1,3 @@
use std::path::PathBuf;
use proc_macro2::TokenStream;
use quote::{format_ident, quote};
use syn::{
@@ -72,23 +70,6 @@ fn extract_named_fields(input: &DeriveInput) -> Result<&FieldsNamed> {
}
}
/// Nested-struct detection
fn is_from_file_struct(ty: &Type) -> bool {
if let Type::Path(TypePath { qself: None, path }) = ty {
return path.segments.len() == 1;
}
false
}
/// Extract the last identifier from a [`TypePath`].
fn last_path_ident(ty: &Type) -> Result<String> {
if let Type::Path(TypePath { qself: None, path }) = ty {
return Ok(path.segments.last().unwrap().ident.to_string());
}
Err(Error::new_spanned(ty, "expected a plain struct name"))
}
/// Build the shadow field + assignment for one original field
fn build_file_field(field: &Field) -> Result<(TokenStream, TokenStream, Option<TokenStream>)> {
let ident = field
@@ -159,14 +140,10 @@ fn build_where_clause(
/// Derive clause for the shadow struct
fn build_derive_clause() -> TokenStream {
if WITH_MERGE {
return quote! {
#[derive(Debug, Clone, Default, serde::Deserialize, serde::Serialize, merge::Merge)]
};
}
quote! {
#[derive(Debug, Clone, Default, serde::Deserialize, serde::Serialize)]
#[derive(Debug, Clone, Default)]
#[cfg_attr(feature = "serde", derive(serde::Deserialize, serde::Serialize))]
#[cfg_attr(feature = "merge", derive(merge::Merge))]
}
}
@@ -332,21 +309,6 @@ mod tests {
assert_eq!(preds, vec!["Z : Eq".to_string()]);
}
#[test]
fn build_derive_clause_defaults() {
let derive_ts = build_derive_clause();
let s = derive_ts.to_string();
if WITH_MERGE {
assert!(s.contains(
"derive (Debug , Clone , Default , serde :: Deserialize , serde :: Serialize , merge :: Merge)"
));
} else {
assert!(s.contains(
"derive (Debug , Clone , Default , serde :: Deserialize , serde :: Serialize)"
));
}
}
#[test]
fn add_trait_bouds_appends_default() {
let gens: Generics = parse_quote!(<T, U>);