print.rs - source

Files

aho_corasick

packed

teddy

compile.rs mod.rs runtime.rs

api.rs mod.rs pattern.rs rabinkarp.rs vector.rs

ahocorasick.rs automaton.rs buffer.rs byte_frequencies.rs classes.rs dfa.rs error.rs lib.rs nfa.rs prefilter.rs state_id.rs

ansi_term

ansi.rs debug.rs difference.rs display.rs lib.rs style.rs windows.rs write.rs

array_tool

iter.rs lib.rs string.rs vec.rs

atty

bitflags

cargo_update

ops

config.rs mod.rs

lib.rs options.rs

cfg_if

clap

dirs

dirs_sys

lib.rs xdg_user_dirs.rs

form_urlencoded

git2

hex

error.rs lib.rs

idna

lib.rs punycode.rs uts46.rs

json

util

diyfp.rs grisu2.rs mod.rs print_dec.rs

value

implements.rs mod.rs

codegen.rs error.rs lib.rs number.rs object.rs parser.rs short.rs

lazy_static

inline_lazy.rs lib.rs

lazysort

libc

unix

linux_like

linux

arch

generic

gnu

b64

x86_64

align.rs mod.rs not_x32.rs

align.rs mod.rs

align.rs mod.rs non_exhaustive.rs

align.rs mod.rs

fixed_width_ints.rs lib.rs macros.rs

libgit2_sys

libssh2_sys

libz_sys

log

lib.rs macros.rs

matches

maybe_uninit

memchr

x86

avx.rs mod.rs sse2.rs

fallback.rs iter.rs lib.rs naive.rs

openssl_probe

openssl_sys

percent_encoding

proc_macro2

detection.rs fallback.rs lib.rs marker.rs parse.rs wrapper.rs

quote

ext.rs format.rs ident_fragment.rs lib.rs runtime.rs spanned.rs to_tokens.rs

regex

regex_syntax

semver

lib.rs version.rs version_req.rs

semver_parser

common.rs lib.rs range.rs recognize.rs version.rs

serde

de

ignored_any.rs impls.rs mod.rs seed.rs utf8.rs value.rs

private

de.rs doc.rs mod.rs ser.rs size_hint.rs

ser

fmt.rs impls.rs impossible.rs mod.rs

integer128.rs lib.rs macros.rs

serde_derive

internals

ast.rs attr.rs case.rs check.rs ctxt.rs mod.rs receiver.rs respan.rs symbol.rs

bound.rs de.rs dummy.rs fragment.rs lib.rs pretend.rs ser.rs try.rs

smallvec

strsim

syn

tabwriter

term_size

platform

textwrap

indentation.rs lib.rs splitting.rs

toml

datetime.rs de.rs lib.rs macros.rs map.rs ser.rs spanned.rs tokens.rs value.rs

unicode_bidi

char_data

mod.rs tables.rs

deprecated.rs explicit.rs format_chars.rs implicit.rs level.rs lib.rs prepare.rs

unicode_normalization

decompose.rs lib.rs lookups.rs normalize.rs perfect_hash.rs quick_check.rs recompose.rs stream_safe.rs tables.rs

unicode_width

lib.rs tables.rs

unicode_xid

lib.rs tables.rs

url

host.rs lib.rs origin.rs parser.rs path_segments.rs quirks.rs slicing.rs

vec_map

use proc_macro2::TokenStream;
use quote::ToTokens;

pub struct TokensOrDefault<'a, T: 'a>(pub &'a Option<T>);

impl<'a, T> ToTokens for TokensOrDefault<'a, T>
where
    T: ToTokens + Default,
{
    fn to_tokens(&self, tokens: &mut TokenStream) {
        match self.0 {
            Some(t) => t.to_tokens(tokens),
            None => T::default().to_tokens(tokens),
        }
    }
}