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Directly use tuple indexing with numbers.
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@tuxbotix
tuxbotix committed Apr 7, 2024
1 parent c04bfbc commit dd10343
Showing 1 changed file with 93 additions and 36 deletions.
129 changes: 93 additions & 36 deletions crates/serialize_hierarchy_derive/src/lib.rs
View file
Original file line number Diff line number Diff line change
@@ -1,6 +1,6 @@
use std::collections::HashSet;

use proc_macro2::{Span, TokenStream};
use proc_macro2::{Literal, TokenStream};
use proc_macro_error::{abort, proc_macro_error};
use quote::{quote, ToTokens};
use syn::{
Expand Down Expand Up @@ -165,52 +165,91 @@ fn generate_path_serializations(fields: &[&Field]) -> Vec<TokenStream> {
fields
.iter()
.filter(|field| !field.attributes.contains(&FieldAttribute::Leaf))
.map(|field| {
let identifier = &field.identifier;
let pattern = identifier.to_string();
quote! {
#pattern => self.#identifier.serialize_path(suffix, serializer)
.map(|field| match &field.identifier {
IdentOrEnumIndex::Ident(identifier) => {
let pattern = identifier.to_string();
quote! {
#pattern => self.#identifier.serialize_path(suffix, serializer)
}
}
IdentOrEnumIndex::EnumIndex(index) => {
let pattern = index.to_string();
let tuple_accessor = Literal::usize_unsuffixed(*index);
quote! {
#pattern => self.#tuple_accessor.serialize_path(suffix, serializer)
}
}
})
.collect()
}

fn generate_serde_serializations(fields: &[&Field]) -> Vec<TokenStream> {
fields.iter().map(|field| {
let identifier = &field.identifier;
let pattern = identifier.to_string();
quote! {
#pattern => serde::Serialize::serialize(&self.#identifier, serializer).map_err(serialize_hierarchy::Error::SerializationFailed)
}
fields.iter().map(|field|
match &field.identifier {
IdentOrEnumIndex::Ident(identifier) => {
let pattern = identifier.to_string();
quote! {
#pattern => serde::Serialize::serialize(&self.#identifier, serializer).map_err(serialize_hierarchy::Error::SerializationFailed)
}
},
IdentOrEnumIndex::EnumIndex(index) =>{
let pattern = index.to_string();
let tuple_accessor = Literal::usize_unsuffixed(*index);
quote! {
#pattern => serde::Serialize::serialize(&self.#tuple_accessor, serializer).map_err(serialize_hierarchy::Error::SerializationFailed)
}
},
}).collect()
}

fn generate_path_deserializations(fields: &[&Field]) -> Vec<TokenStream> {
fields
.iter()
.filter(|field| !field.attributes.contains(&FieldAttribute::Leaf))
.map(|field| {
let identifier = &field.identifier;
let pattern = identifier.to_string();
quote! {
#pattern => self.#identifier.deserialize_path(suffix, deserializer)
.map(|field| match &field.identifier {
IdentOrEnumIndex::Ident(identifier) => {
let pattern = identifier.to_string();
quote! {
#pattern => self.#identifier.deserialize_path(suffix, deserializer)
}
}
IdentOrEnumIndex::EnumIndex(index) => {
let pattern = index.to_string();
let tuple_accessor = Literal::usize_unsuffixed(*index);
quote! {
#pattern => self.#tuple_accessor.deserialize_path(suffix, deserializer)
}
}
})
.collect()
}

fn generate_serde_deserializations(fields: &[&Field]) -> Vec<TokenStream> {
fields.iter().map(|field| {
let identifier = &field.identifier;
let pattern = identifier.to_string();
let ty = &field.ty;
quote! {
#pattern => {
self.#identifier = <#ty as serde::Deserialize>::deserialize(deserializer).map_err(serialize_hierarchy::Error::DeserializationFailed)?;
Ok(())
}
fields.iter().map(|field|
match &field.identifier {
IdentOrEnumIndex::Ident(identifier) => {
let pattern = identifier.to_string();
let ty = &field.ty;
quote! {
#pattern => {
self.#identifier = <#ty as serde::Deserialize>::deserialize(deserializer).map_err(serialize_hierarchy::Error::DeserializationFailed)?;
Ok(())
}

}
}
},
IdentOrEnumIndex::EnumIndex(index) => {
let pattern = index.to_string();
let tuple_accessor = Literal::usize_unsuffixed(*index);
let ty = &field.ty;
quote! {
#pattern => {
self.#tuple_accessor = <#ty as serde::Deserialize>::deserialize(deserializer).map_err(serialize_hierarchy::Error::DeserializationFailed)?;
Ok(())
}

}
}
}).collect()
}

Expand All @@ -219,7 +258,10 @@ fn generate_path_exists_getters(fields: &[&Field]) -> Vec<TokenStream> {
.iter()
.filter(|field| !field.attributes.contains(&FieldAttribute::Leaf))
.map(|field| {
let pattern = field.identifier.to_string();
let pattern = match &field.identifier {
IdentOrEnumIndex::Ident(identifier) => identifier.to_string(),
IdentOrEnumIndex::EnumIndex(index) => index.to_string(),
};
let ty = &field.ty;
quote! {
#pattern => <#ty as serialize_hierarchy::SerializeHierarchy>::exists(suffix)
Expand All @@ -232,7 +274,10 @@ fn generate_field_exists_getters(fields: &[&Field]) -> Vec<TokenStream> {
fields
.iter()
.map(|field| {
let pattern = field.identifier.to_string();
let pattern = match &field.identifier {
IdentOrEnumIndex::Ident(identifier) => identifier.to_string(),
IdentOrEnumIndex::EnumIndex(index) => index.to_string(),
};
quote! {
#pattern => true
}
Expand All @@ -244,7 +289,10 @@ fn generate_field_chains(fields: &[&Field]) -> Vec<TokenStream> {
fields
.iter()
.map(|field| {
let name_string = field.identifier.to_string();
let name_string = match &field.identifier {
IdentOrEnumIndex::Ident(identifier) => identifier.to_string(),
IdentOrEnumIndex::EnumIndex(index) => index.to_string(),
};
quote! {
fields.insert(format!("{prefix}{}", #name_string));
}
Expand All @@ -257,7 +305,10 @@ fn generate_path_field_chains(fields: &[&Field]) -> Vec<TokenStream> {
.iter()
.filter(|field| !field.attributes.contains(&FieldAttribute::Leaf))
.map(|field| {
let field_name = &field.identifier.to_string();
let field_name = match &field.identifier {
IdentOrEnumIndex::Ident(identifier) => identifier.to_string(),
IdentOrEnumIndex::EnumIndex(index)=>index.to_string(),
};
let ty = &field.ty;
quote! {
<#ty as serialize_hierarchy::SerializeHierarchy>::fill_fields(fields, &format!("{prefix}{}.", #field_name));
Expand Down Expand Up @@ -319,10 +370,16 @@ enum FieldAttribute {
Leaf,
}

#[derive(Debug)]
enum IdentOrEnumIndex {
Ident(Ident),
EnumIndex(usize),
}

#[derive(Debug)]
struct Field {
attributes: HashSet<FieldAttribute>,
identifier: Ident,
identifier: IdentOrEnumIndex,
ty: Type,
}

Expand Down Expand Up @@ -368,10 +425,10 @@ fn read_fields(input: &DataStruct) -> Vec<Field> {
}
})
.collect();
let identifier = field
.ident
.clone()
.unwrap_or(Ident::new(&format!("_{}", field_index), Span::call_site()));
let identifier = field.ident.clone().map_or_else(
|| IdentOrEnumIndex::EnumIndex(field_index),
|identifier| IdentOrEnumIndex::Ident(identifier),
);
let ty = field.ty.clone();
Field {
attributes,
Expand Down

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