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//! Generate the `enum menu` and nothing else. Implementations are in
//! impl_menu.rs
use proc_macro2::TokenStream;
use quote::quote;
use crate::parse_macro::{DeclareMenus, Field, Menu};
pub fn generate(input: &DeclareMenus) -> TokenStream {
let mut variants = quote! {};
let mut player_fields = None;
for menu in &input.menus {
if menu.name == "Player" {
player_fields = Some(generate_fields(&menu.fields, true));
} else {
variants.extend(generate_variant_for_menu(menu));
}
}
let player_fields = player_fields.expect("Player variant must be present");
quote! {
#[derive(Clone, Debug, Default)]
pub struct Player {
#player_fields
}
/// A menu, which is a fixed collection of slots.
#[derive(Clone, Debug)]
pub enum Menu {
Player(Player),
#variants
}
}
}
/// Player {
/// craft_result: ItemStack,
/// craft: [ItemStack; 4],
/// armor: [ItemStack; 4],
/// inventory: [ItemStack; 36],
/// offhand: ItemStack,
/// },
fn generate_variant_for_menu(menu: &Menu) -> TokenStream {
let name = &menu.name;
let fields = generate_fields(&menu.fields, false);
quote! {
#name {
#fields
},
}
}
fn generate_fields(fields: &[Field], public: bool) -> TokenStream {
let mut generated_fields = quote! {};
for field in fields {
let field_length = field.length;
let field_type = if field.length == 1 {
quote! { ItemStack }
} else {
quote! { SlotList<#field_length> }
};
let field_name = &field.name;
if public {
generated_fields.extend(quote! { pub #field_name: #field_type, })
} else {
generated_fields.extend(quote! { #field_name: #field_type, })
}
}
generated_fields
}
|
