Function macro_tools::type_container_kind

pub fn type_container_kind(ty: &Type) -> ContainerKind

Return kind of container specified by type.

Good to verify alloc::vec::Vec< i32 > is vector. Good to verify std::collections::HashMap< i32, i32 > is hash map.

Sample

use proc_macro_tools::*;
use quote::quote;

let code = quote!( std::collections::HashMap< i32, i32 > );
let tree_type = syn::parse2::< syn::Type >( code ).unwrap();
let kind = type_container_kind( &tree_type );
assert_eq!( kind, ContainerKind::HashMap );