sepserde_derive 0.9.0

XML Serialization and deserialization proc macros for IEEE 2030.5
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>,
    value: TokenStream,
) -> Option<TokenStream> {
    let label = field.get_value_label();

    let default_value = field
        .get_default_function()
        .map(|default_function| quote!(#default_function()))
        .unwrap_or_else(|| quote!(#value));

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

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