yaserde_derive 0.12.0

Serialization and deserialization macros
Documentation 
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use crate::common::YaSerdeField;
use proc_macro2::TokenStream;
use quote::quote;

pub fn build_default_value(
  field: &YaSerdeField,
  field_type: Option<TokenStream>,
) -> Option<TokenStream> {
  let label = field.get_value_label();

  let field_type = field_type
    .map(|field_type| quote!(: Option::<#field_type>))
    .unwrap_or_default();

  Some(quote! {
    #[allow(unused_mut)]
    let mut #label #field_type = None;
  })
}

pub fn build_default_vec_value(
  field: &YaSerdeField,
  field_type: Option<TokenStream>,
) -> Option<TokenStream> {
  let label = field.get_value_label();

  let field_type = field_type
    .map(|field_type| quote!(: #field_type))
    .unwrap_or_default();

  Some(quote! {
    #[allow(unused_mut)]
    let mut #label #field_type = vec![];
  })
}