Create derive macro helper function for simple enums

finchie

Feb 11, 2024, 3:52 PM

K4XW4OBW5VWRCQZJNVV624E25SKRJPZ5WUXWVYHP6U7T7NPJFMFQC

Dependencies

[2] 56F2YE6H Use `prettyplease` to format macro output
[3] UOMQT7LT Add support for cardinal CLDR plural selectors
[4] MIHGKLME Fix generated `format!` macro call
[5] BMUMO42I Add support for inline string and number literals
[6] 3C3CHSY5 Implement `to_syn` for groups containing simple text messages
[7] O77KA6C4 Create `fluent_embed` crate

Change contents

replacement in fluent_embed/src/lib.rs at line 5

[4.114]→[3.111:139](∅→∅)

use heck::ToUpperCamelCase;

[4.114]

[3.139]

use heck::{ToKebabCase, ToUpperCamelCase};
edit in fluent_embed/src/lib.rs at line 28

[4.570]

[4.315]

fn id(&self) -> &'resource str {
match self {
Self::Message(message) => message.id.name,
}
}
edit in fluent_embed/src/lib.rs at line 57

[4.577]

[4.577]

pub fn derive_enum(
&self,
ident: syn::Ident,
enum_data: syn::DataEnum,
) -> proc_macro2::TokenStream {
let mut idents = Vec::with_capacity(enum_data.variants.len());
let mut messages = Vec::with_capacity(enum_data.variants.len());
replacement in fluent_embed/src/lib.rs at line 66

[4.578]→[4.0:61](∅→∅),[4.61]→[4.639:796](∅→∅),[4.639]→[4.639:796](∅→∅)

// TODO: turn this into a well-formed `match` expression
pub fn to_syn(&self) -> Vec<syn::Expr> {
self.children
.iter()
.map(GroupEntry::to_syn)
.collect::<Vec<_>>()

[4.578]

[4.991]

for variant in enum_data.variants {
let kebab_case_ident = variant.ident.to_string().to_kebab_case();
let message = self
.children
.iter()
.find(|child| child.id() == kebab_case_ident)
.unwrap();

idents.push(variant.ident);
messages.push(message.to_syn());
}

quote! {
impl #ident {
fn localize(&self) -> String {
match self {
#(Self::#idents => #messages),*
}
}
}
}
replacement in fluent_embed/examples/groups.rs at line 2

[4.1082]→[4.1049:1067](∅→∅)

use quote::quote;

[4.1082]

[4.1082]

use syn::parse_quote;
replacement in fluent_embed/examples/groups.rs at line 5

[4.1095]→[3.2240:2456](∅→∅)

// Example from https://projectfluent.org/fluent/guide/selectors.html
let ftl = r#"emails =
{ $unreadEmails ->
[one] You have one unread email.
*[other] You have { $unreadEmails } unread emails.
}"#;

[4.1095]

[4.1131]

let ftl = r#"first = one
second = two"#;
replacement in fluent_embed/examples/groups.rs at line 10

[4.1244]→[4.1068:1200](∅→∅)

let syn_expressions = group
.to_syn()
.iter()
.map(|expr| quote! {#expr})
.collect::<Vec<_>>();

[4.1244]

[4.1244]

let source: syn::DeriveInput = parse_quote! {
enum Test {
First,
Second,
}
};
replacement in fluent_embed/examples/groups.rs at line 18

[4.1245]→[2.0:63](∅→∅)

let file_contents = quote! {
#(#syn_expressions)*;

[4.1245]

[2.63]

let data = match source.data {
syn::Data::Enum(enum_data) => enum_data,
_ => todo!(),
edit in fluent_embed/examples/groups.rs at line 23

[2.71]

[2.71]

let file_contents = group.derive_enum(source.ident, data);