syn 1.0.5

Parser for Rust source code
Documentation 
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extern crate proc_macro2;
extern crate syn;

#[macro_use]
mod macros;

use std::str::FromStr;

use proc_macro2::TokenStream;
use syn::{Expr, ExprRange};

#[test]
fn test_expr_parse() {
    let code = "..100u32";
    let tt = TokenStream::from_str(code).unwrap();
    let expr: Expr = syn::parse2(tt.clone()).unwrap();
    let expr_range: ExprRange = syn::parse2(tt).unwrap();
    assert_eq!(expr, Expr::Range(expr_range));
}

#[test]
fn test_await() {
    // Must not parse as Expr::Field.
    let expr = syn::parse_str::<Expr>("fut.await").unwrap();

    snapshot!(expr, @r###"
   ⋮Expr::Await {
   ⋮    base: Expr::Path {
   ⋮        path: Path {
   ⋮            segments: [
   ⋮                PathSegment {
   ⋮                    ident: "fut",
   ⋮                    arguments: None,
   ⋮                },
   ⋮            ],
   ⋮        },
   ⋮    },
   ⋮}
    "###);
}