versatiles_derive 2.0.0

A toolbox for converting, checking and serving map tiles in various formats.
Documentation 
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mod decode_struct;

pub use decode_struct::decode_struct;
use syn::{Attribute, Meta};

pub fn extract_comment(attr: &Attribute) -> Option<String> {
	if attr.path().is_ident("doc")
		&& let Meta::NameValue(meta) = &attr.meta
		&& let syn::Expr::Lit(lit) = &meta.value
		&& let syn::Lit::Str(lit_str) = &lit.lit
	{
		let text = lit_str.value().trim().to_string();
		return if text.is_empty() { None } else { Some(text) };
	}
	None
}