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Support mapping core::fmt::Debug as a supertrait
author
Matt Corallo
<git@bluematt.me>
Wed, 22 Sep 2021 02:43:51 +0000
(
02:43
+0000)
committer
Matt Corallo
<git@bluematt.me>
Thu, 23 Sep 2021 17:36:18 +0000
(17:36 +0000)
c-bindings-gen/src/main.rs
patch
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diff --git
a/c-bindings-gen/src/main.rs
b/c-bindings-gen/src/main.rs
index bfadca0ed8dc415be471efa712a620ac21c3fedf..9cd32feb8f7bfe6d1ebeee93e076cfa25c0bf82f 100644
(file)
--- a/
c-bindings-gen/src/main.rs
+++ b/
c-bindings-gen/src/main.rs
@@
-329,6
+329,13
@@
fn writeln_trait<'a, 'b, W: std::io::Write>(w: &mut W, t: &'a syn::ItemTrait, ty
Some(format!("\t/**\n\t * {}\n\t * {}\n\t */\n", hash_docs_a, hash_docs_b))));
},
("Send", _) => {}, ("Sync", _) => {},
Some(format!("\t/**\n\t * {}\n\t * {}\n\t */\n", hash_docs_a, hash_docs_b))));
},
("Send", _) => {}, ("Sync", _) => {},
+ ("std::fmt::Debug", _)|("core::fmt::Debug", _) => {
+ let debug_docs = "Return a human-readable \"debug\" string describing this object";
+ writeln!(w, "\t/// {}", debug_docs).unwrap();
+ writeln!(w, "\tpub debug_str: extern \"C\" fn (this_arg: *const c_void) -> crate::c_types::Str,").unwrap();
+ generated_fields.push(("debug_str".to_owned(), None,
+ Some(format!("\t/**\n\t * {}\n\t */\n", debug_docs))));
+ },
(s, i) => {
// TODO: Both of the below should expose supertrait methods in C++, but doing so is
// nontrivial.
(s, i) => {
// TODO: Both of the below should expose supertrait methods in C++, but doing so is
// nontrivial.
@@
-494,6
+501,13
@@
fn writeln_trait<'a, 'b, W: std::io::Write>(w: &mut W, t: &'a syn::ItemTrait, ty
writeln!(w, "\t\t{}_clone(self)", trait_name).unwrap();
writeln!(w, "\t}}\n}}").unwrap();
},
writeln!(w, "\t\t{}_clone(self)", trait_name).unwrap();
writeln!(w, "\t}}\n}}").unwrap();
},
+ ("std::fmt::Debug", _)|("core::fmt::Debug", _) => {
+ writeln!(w, "impl core::fmt::Debug for {} {{", trait_name).unwrap();
+ writeln!(w, "\tfn fmt(&self, f: &mut core::fmt::Formatter) -> Result<(), core::fmt::Error> {{").unwrap();
+ writeln!(w, "\t\tf.write_str((self.debug_str)(self.this_arg).into_str())").unwrap();
+ writeln!(w, "\t}}").unwrap();
+ writeln!(w, "}}").unwrap();
+ },
(s, i) => {
if let Some(supertrait) = types.crate_types.traits.get(s) {
let mut module_iter = s.rsplitn(2, "::");
(s, i) => {
if let Some(supertrait) = types.crate_types.traits.get(s) {
let mut module_iter = s.rsplitn(2, "::");
@@
-827,6
+841,7
@@
fn writeln_impl<W: std::io::Write>(w: &mut W, i: &syn::ItemImpl, types: &mut Typ
},
("Sync", _) => {}, ("Send", _) => {},
("std::marker::Sync", _) => {}, ("std::marker::Send", _) => {},
},
("Sync", _) => {}, ("Send", _) => {},
("std::marker::Sync", _) => {}, ("std::marker::Send", _) => {},
+ ("core::fmt::Debug", _) => {},
(s, t) => {
if let Some(supertrait_obj) = types.crate_types.traits.get(s) {
writeln!(w, "\t\t{}: crate::{} {{", t, s).unwrap();
(s, t) => {
if let Some(supertrait_obj) = types.crate_types.traits.get(s) {
writeln!(w, "\t\t{}: crate::{} {{", t, s).unwrap();