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use syn::{
Ident, LitInt, Token, braced,
parse::{Parse, ParseStream, Result},
};
/// An identifier, colon, and number
/// `craft_result: 1`
pub struct Field {
pub name: Ident,
pub length: usize,
}
impl Parse for Field {
fn parse(input: ParseStream) -> Result<Self> {
let name = input.parse::<Ident>()?;
let _ = input.parse::<Token![:]>()?;
let length = input.parse::<LitInt>()?.base10_parse()?;
Ok(Self { name, length })
}
}
/// An identifier and a list of `Field` in curly brackets
/// ```rust,ignore
/// Player {
/// craft_result: 1,
/// ...
/// }
/// ```
pub struct Menu {
/// The menu name, e.g. `Player`
pub name: Ident,
pub fields: Vec<Field>,
}
impl Parse for Menu {
fn parse(input: ParseStream) -> Result<Self> {
let name = input.parse::<Ident>()?;
let content;
braced!(content in input);
let fields = content
.parse_terminated(Field::parse, Token![,])?
.into_iter()
.collect();
Ok(Self { name, fields })
}
}
/// A list of `Menu`s
/// ```rust,ignore
/// Player {
/// craft_result: 1,
/// ...
/// },
/// ...
/// ```
pub struct DeclareMenus {
pub menus: Vec<Menu>,
}
impl Parse for DeclareMenus {
fn parse(input: ParseStream) -> Result<Self> {
let menus = input
.parse_terminated(Menu::parse, Token![,])?
.into_iter()
.collect();
Ok(Self { menus })
}
}
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