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use proc_macro2::Span;
use proc_macro2::TokenStream;
use syn;
pub fn print_err(msg: String, t: TokenStream) {
println!("Error: {} in '{}'", msg, t.to_string());
}
pub fn get_doc(attrs: &[syn::Attribute], null_terminated: bool) -> syn::Lit {
let mut doc = Vec::new();
for attr in attrs.iter() {
if let Some(syn::Meta::NameValue(ref metanv)) = attr.interpret_meta() {
if metanv.ident == "doc" {
if let syn::Lit::Str(ref litstr) = metanv.lit {
let d = litstr.value();
doc.push(if d.starts_with(' ') {
d[1..d.len()].to_string()
} else {
d
});
} else {
panic!("Invalid doc comment");
}
}
}
}
let mut docstr = doc.join("\n");
if null_terminated {
docstr.push('\0');
}
syn::Lit::Str(syn::LitStr::new(&docstr, Span::call_site()))
}