38 lines
919 B
Rust
38 lines
919 B
Rust
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use proc_macro2::TokenStream as TokenStream2;
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use quote::ToTokens;
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use syn::{Path, Type};
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pub fn vec_to_token_stream_2<T>(input: &Vec<T>) -> Vec<TokenStream2>
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where
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T: ToTokens,
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{
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input.iter().map(|ns| ns.into_token_stream()).collect()
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}
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fn path_ident(path: &Path) -> String {
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path.segments
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.iter()
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.into_iter()
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.fold(String::with_capacity(250), |mut acc, v| {
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acc.push_str(&v.ident.to_string());
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acc.push('|');
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acc
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})
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}
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fn is_option_path_ident(path_ident: String) -> bool {
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vec!["Option|", "std|option|Option|", "core|option|Option|"]
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.into_iter()
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.find(|s| &path_ident == *s)
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.is_some()
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}
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pub fn is_option_type(ty: &Type) -> bool {
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match ty {
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Type::Path(ty_path) => {
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ty_path.qself.is_none() && is_option_path_ident(path_ident(&ty_path.path))
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}
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_ => false,
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}
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}
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