Start of generic impl fix for rustdoc

Author: GuillaumeGomez

src/Cargo.lock

@@ -208,14 +208,13 @@ dependencies = [
  "ignore 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "jobserver 0.1.11 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "lazycell 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lazycell 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.42 (registry+https://github.com/rust-lang/crates.io-index)",
  "libgit2-sys 0.7.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "miow 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "num-traits 0.2.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "num_cpus 1.8.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "rustfix 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "same-file 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "semver 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 1.0.70 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -244,18 +243,6 @@ dependencies = [
  "serde_json 1.0.24 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
-[[package]]
-name = "cargo_metadata"
-version = "0.6.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "error-chain 0.12.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "semver 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.70 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde_derive 1.0.70 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde_json 1.0.24 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "cargotest2"
 version = "0.1.0"
@@ -642,14 +629,6 @@ dependencies = [
  "backtrace 0.3.9 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
-[[package]]
-name = "error-chain"
-version = "0.12.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "backtrace 0.3.9 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "error_index_generator"
 version = "0.0.0"
@@ -1032,7 +1011,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "lazycell"
-version = "1.0.0"
+version = "0.6.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
@@ -1237,13 +1216,12 @@ name = "miri"
 version = "0.1.0"
 dependencies = [
  "byteorder 1.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "cargo_metadata 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "colored 1.6.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cargo_metadata 0.5.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "compiletest_rs 0.3.11 (registry+https://github.com/rust-lang/crates.io-index)",
  "env_logger 0.5.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "regex 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "regex 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1383,7 +1361,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "libc 0.2.42 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "smallvec 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "smallvec 0.6.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -2364,18 +2342,6 @@ dependencies = [
  "serde_json 1.0.24 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
-[[package]]
-name = "rustfix"
-version = "0.4.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "failure 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.70 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde_derive 1.0.70 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde_json 1.0.24 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "rustfmt-nightly"
 version = "0.8.2"
@@ -2497,8 +2463,11 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "smallvec"
-version = "0.6.2"
+version = "0.6.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "unreachable 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
 
 [[package]]
 name = "socket2"
@@ -3065,7 +3034,6 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 "checksum bufstream 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)" = "f2f382711e76b9de6c744cc00d0497baba02fb00a787f088c879f01d09468e32"
 "checksum byteorder 1.2.3 (registry+https://github.com/rust-lang/crates.io-index)" = "74c0b906e9446b0a2e4f760cdb3fa4b2c48cdc6db8766a845c54b6ff063fd2e9"
 "checksum cargo_metadata 0.5.8 (registry+https://github.com/rust-lang/crates.io-index)" = "1efca0b863ca03ed4c109fb1c55e0bc4bbeb221d3e103d86251046b06a526bd0"
-"checksum cargo_metadata 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)" = "2d6809b327f87369e6f3651efd2c5a96c49847a3ed2559477ecba79014751ee1"
 "checksum cc 1.0.18 (registry+https://github.com/rust-lang/crates.io-index)" = "2119ea4867bd2b8ed3aecab467709720b2d55b1bcfe09f772fd68066eaf15275"
 "checksum cfg-if 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)" = "efe5c877e17a9c717a0bf3613b2709f723202c4e4675cc8f12926ded29bcb17e"
 "checksum chalk-engine 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)" = "a146c19172c7eea48ea55a7123ac95da786639bc665097f1e14034ee5f1d8699"
@@ -3097,7 +3065,6 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 "checksum env_logger 0.5.10 (registry+https://github.com/rust-lang/crates.io-index)" = "0e6e40ebb0e66918a37b38c7acab4e10d299e0463fe2af5d29b9cc86710cfd2a"
 "checksum environment 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "1f4b14e20978669064c33b4c1e0fb4083412e40fe56cbea2eae80fd7591503ee"
 "checksum error-chain 0.11.0 (registry+https://github.com/rust-lang/crates.io-index)" = "ff511d5dc435d703f4971bc399647c9bc38e20cb41452e3b9feb4765419ed3f3"
-"checksum error-chain 0.12.0 (registry+https://github.com/rust-lang/crates.io-index)" = "07e791d3be96241c77c43846b665ef1384606da2cd2a48730abe606a12906e02"
 "checksum failure 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "934799b6c1de475a012a02dab0ace1ace43789ee4b99bcfbf1a2e3e8ced5de82"
 "checksum failure_derive 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "c7cdda555bb90c9bb67a3b670a0f42de8e73f5981524123ad8578aafec8ddb8b"
 "checksum filetime 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "da4b9849e77b13195302c174324b5ba73eec9b236b24c221a61000daefb95c5f"
@@ -3136,7 +3103,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 "checksum languageserver-types 0.45.0 (registry+https://github.com/rust-lang/crates.io-index)" = "9d91d91d1c23db74187096d191967cb49f49bb175ad6d855fa9229d16ef2c982"
 "checksum lazy_static 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)" = "76f033c7ad61445c5b347c7382dd1237847eb1bce590fe50365dcb33d546be73"
 "checksum lazy_static 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)" = "fb497c35d362b6a331cfd94956a07fc2c78a4604cdbee844a81170386b996dd3"
-"checksum lazycell 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "d33a48d0365c96081958cc663eef834975cb1e8d8bea3378513fc72bdbf11e50"
+"checksum lazycell 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)" = "a6f08839bc70ef4a3fe1d566d5350f519c5912ea86be0df1740a7d247c7fc0ef"
 "checksum libc 0.2.42 (registry+https://github.com/rust-lang/crates.io-index)" = "b685088df2b950fccadf07a7187c8ef846a959c142338a48f9dc0b94517eb5f1"
 "checksum libgit2-sys 0.7.5 (registry+https://github.com/rust-lang/crates.io-index)" = "9dcce5a1ecca1891ab06c1545a422fd4b35f65c19acec51ea638c66d5be0810d"
 "checksum libssh2-sys 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)" = "c628b499e8d1a4f4bd09a95d6cb1f8aeb231b46a9d40959bbd0408f14dd63adf"
@@ -3223,7 +3190,6 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 "checksum rustc-serialize 0.3.24 (registry+https://github.com/rust-lang/crates.io-index)" = "dcf128d1287d2ea9d80910b5f1120d0b8eede3fbf1abe91c40d39ea7d51e6fda"
 "checksum rustc_version 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "a54aa04a10c68c1c4eacb4337fd883b435997ede17a9385784b990777686b09a"
 "checksum rustfix 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)" = "9da3cf9b79dc889a2c9879643f26d7a53e37e9361c7566b7d2787d5ace0d8396"
-"checksum rustfix 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "6e2613df31a403754605dba168ded93d529a2b88c5a63b78cf2421bb5d62c936"
 "checksum same-file 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)" = "cfb6eded0b06a0b512c8ddbcf04089138c9b4362c2f696f3c3d76039d68f3637"
 "checksum schannel 0.1.13 (registry+https://github.com/rust-lang/crates.io-index)" = "dc1fabf2a7b6483a141426e1afd09ad543520a77ac49bd03c286e7696ccfd77f"
 "checksum scoped-tls 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)" = "332ffa32bf586782a3efaeb58f127980944bbc8c4d6913a86107ac2a5ab24b28"
@@ -3237,7 +3203,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 "checksum shell-escape 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)" = "170a13e64f2a51b77a45702ba77287f5c6829375b04a69cf2222acd17d0cfab9"
 "checksum shlex 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "7fdf1b9db47230893d76faad238fd6097fd6d6a9245cd7a4d90dbd639536bbd2"
 "checksum siphasher 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "0df90a788073e8d0235a67e50441d47db7c8ad9debd91cbf43736a2a92d36537"
-"checksum smallvec 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)" = "312a7df010092e73d6bbaf141957e868d4f30efd2bfd9bb1028ad91abec58514"
+"checksum smallvec 0.6.3 (registry+https://github.com/rust-lang/crates.io-index)" = "26df3bb03ca5eac2e64192b723d51f56c1b1e0860e7c766281f4598f181acdc8"
 "checksum socket2 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)" = "962a516af4d3a7c272cb3a1d50a8cc4e5b41802e4ad54cfb7bee8ba61d37d703"
 "checksum stable_deref_trait 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "ffbc596e092fe5f598b12ef46cc03754085ac2f4d8c739ad61c4ae266cc3b3fa"
 "checksum string_cache 0.7.3 (registry+https://github.com/rust-lang/crates.io-index)" = "25d70109977172b127fe834e5449e5ab1740b9ba49fa18a2020f509174f25423"

src/librustdoc/clean/auto_trait.rs

@@ -8,9 +8,9 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-use rustc::traits::auto_trait as auto;
-use rustc::ty::TypeFoldable;
-use rustc::hir;
+use rustc::{self, hir};
+use rustc::traits::{self, auto_trait as auto};
+use rustc::ty::{ToPredicate, TypeFoldable};
 use std::fmt::Debug;
 
 use super::*;
@@ -82,6 +82,27 @@ impl<'a, 'tcx, 'rcx> AutoTraitFinder<'a, 'tcx, 'rcx> {
         name: Option<String>,
     ) -> Vec<Item>
     where F: Fn(DefId) -> Def {
+
+        if ::std::env::var("LOL").is_ok() {
+            let ty = self.cx.tcx.type_of(def_id);
+            if let ty::TyAdt(_adt, _) = ty.sty {
+                let subts = ty::subst::Substs::identity_for_item(self.cx.tcx.clone(), def_id);
+                self.cx.tcx.infer_ctxt().enter(|infcx| {
+                    for impl_ in infcx.tcx.all_trait_implementations(LOCAL_CRATE).iter() {
+                        let trait_ref = rustc::ty::TraitRef::new(*impl_, subts);
+                        let pred = trait_ref.to_predicate();
+                        let obligation = traits::Obligation::new(traits::ObligationCause::dummy(),
+                                                                 rustc::ty::ParamEnv::empty(),
+                                                                 pred);
+                        println!("{} => {}",
+                                 infcx.tcx.item_name(*impl_).to_string(),
+                                 infcx.predicate_may_hold(&obligation));
+                    }
+                });
+            }
+        }
+        //let res = self.cx.tcx.trait_impls_of(def_id);
+        //println!("=> {:?} {:?}", res.blanket_impls.len(), res.non_blanket_impls.len());
         if self.cx
             .tcx
             .get_attrs(def_id)