| 1 | use proc_macro2::TokenStream; |
| 2 | use quote::quote; |
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| 3 | use syn::{Field, Ident, Index}; |
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| 4 | |
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| 5 | pub fn tuple_exprs(fields: &[&Field], method_ident: &Ident) -> Vec<TokenStream> { |
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| 6 | let mut exprs: Vec = vec![]; |
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| 7 | |
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| 8 | for i: usize in 0..fields.len() { |
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| 9 | let i: Index = Index::from(i); |
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| 10 | // generates `self.0.add(rhs.0)` |
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| 11 | let expr: TokenStream = quote!(self.#i.#method_ident(rhs.#i)); |
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| 12 | exprs.push(expr); |
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| 13 | } |
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| 14 | exprs |
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| 15 | } |
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| 16 | |
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| 17 | pub fn struct_exprs(fields: &[&Field], method_ident: &Ident) -> Vec<TokenStream> { |
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| 18 | let mut exprs: Vec = vec![]; |
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| 19 | |
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| 20 | for field: &&Field in fields { |
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| 21 | // It's safe to unwrap because struct fields always have an identifier |
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| 22 | let field_id: &Ident = field.ident.as_ref().unwrap(); |
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| 23 | // generates `x: self.x.add(rhs.x)` |
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| 24 | let expr: TokenStream = quote!(self.#field_id.#method_ident(rhs.#field_id)); |
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| 25 | exprs.push(expr) |
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| 26 | } |
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| 27 | exprs |
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| 28 | } |
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| 29 | |
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