Files
aho_corasick
atty
beef
bitflags
bstr
byteorder
cfg_if
clap
clap_derive
codespan
codespan_reporting
crc_any
crypto_hash
csv
csv_core
debug_helper
filepath
fixed
fixed_macro
fixed_macro_impl
fixed_macro_types
fnv
foreign_types
foreign_types_shared
getrandom
glob
hashbrown
heck
hex
indexmap
itoa
lazy_static
libc
linked_hash_map
linked_hash_set
logos
logos_derive
lrl_test_compiler
maplit
memchr
memoffset
once_cell
openssl
openssl_sys
os_str_bytes
paste
pest
pest_derive
pest_generator
pest_meta
phf
phf_generator
phf_macros
phf_shared
ppv_lite86
proc_macro2
proc_macro_error
proc_macro_error_attr
proc_macro_hack
quote
rand
rand_chacha
rand_core
regex
regex_automata
regex_syntax
remove_dir_all
ring
rowan
rustc_hash
ryu
semver
semver_parser
serde
serde_derive
serde_json
siphasher
smallvec
smawk
smol_str
spin
stable_deref_trait
strsim
syn
taplo
tempfile
termcolor
text_size
textwrap
toml
triomphe
typenum
ucd_trie
unicode_linebreak
unicode_segmentation
unicode_width
unicode_xid
untrusted
utf8_ranges
vec_map
 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
use proc_macro2::{Ident, TokenStream};
use quote::format_ident;

use syn;
use try;

pub fn wrap_in_const(
    serde_path: Option<&syn::Path>,
    trait_: &str,
    ty: &Ident,
    code: TokenStream,
) -> TokenStream {
    let try_replacement = try::replacement();

    let dummy_const = if cfg!(underscore_consts) {
        format_ident!("_")
    } else {
        format_ident!("_IMPL_{}_FOR_{}", trait_, unraw(ty))
    };

    let use_serde = match serde_path {
        Some(path) => quote! {
            use #path as _serde;
        },
        None => quote! {
            #[allow(rust_2018_idioms, clippy::useless_attribute)]
            extern crate serde as _serde;
        },
    };

    quote! {
        #[doc(hidden)]
        #[allow(non_upper_case_globals, unused_attributes, unused_qualifications)]
        const #dummy_const: () = {
            #use_serde
            #try_replacement
            #code
        };
    }
}

#[allow(deprecated)]
fn unraw(ident: &Ident) -> String {
    // str::trim_start_matches was added in 1.30, trim_left_matches deprecated
    // in 1.33. We currently support rustc back to 1.15 so we need to continue
    // to use the deprecated one.
    ident.to_string().trim_left_matches("r#").to_owned()
}