Auto merge of #41972 - frewsxcv:rollup, r=frewsxcv

Rollup of 5 pull requests

- Successful merges: #41826, #41919, #41946, #41967, #41969
- Failed merges: #41939

src/Cargo.toml

@@ -21,14 +21,6 @@ exclude = [
   "tools/rls",
 ]
 
-# Curiously, compiletest will segfault if compiled with opt-level=3 on 64-bit
-# MSVC when running the compile-fail test suite when a should-fail test panics.
-# But hey if this is removed and it gets past the bots, sounds good to me.
-[profile.release]
-opt-level = 2
-[profile.bench]
-opt-level = 2
-
 # These options are controlled from our rustc wrapper script, so turn them off
 # here and have them controlled elsewhere.
 [profile.dev]

src/librustc/lint/context.rs

@@ -1055,7 +1055,7 @@ impl<'a> ast_visit::Visitor<'a> for EarlyContext<'a> {
         run_lints!(self, check_ident, early_passes, sp, id);
     }
 
-    fn visit_mod(&mut self, m: &'a ast::Mod, s: Span, n: ast::NodeId) {
+    fn visit_mod(&mut self, m: &'a ast::Mod, s: Span, _a: &[ast::Attribute], n: ast::NodeId) {
         run_lints!(self, check_mod, early_passes, m, s, n);
         ast_visit::walk_mod(self, m);
         run_lints!(self, check_mod_post, early_passes, m, s, n);

src/librustc_passes/hir_stats.rs

@@ -252,7 +252,7 @@ impl<'v> hir_visit::Visitor<'v> for StatCollector<'v> {
 
 impl<'v> ast_visit::Visitor<'v> for StatCollector<'v> {
 
-    fn visit_mod(&mut self, m: &'v ast::Mod, _s: Span, _n: NodeId) {
+    fn visit_mod(&mut self, m: &'v ast::Mod, _s: Span, _a: &[ast::Attribute], _n: NodeId) {
         self.record("Mod", Id::None, m);
         ast_visit::walk_mod(self, m)
     }

src/librustc_save_analysis/data.rs

@@ -267,7 +267,7 @@ pub struct ModData {
     pub items: Vec<NodeId>,
     pub visibility: Visibility,
     pub docs: String,
-    pub sig: Signature,
+    pub sig: Option<Signature>,
     pub attributes: Vec<Attribute>,
 }
 

src/librustc_save_analysis/dump_visitor.rs

@@ -1211,6 +1211,31 @@ impl<'l, 'tcx: 'l, 'll, D: Dump + 'll> DumpVisitor<'l, 'tcx, 'll, D> {
 }
 
 impl<'l, 'tcx: 'l, 'll, D: Dump +'ll> Visitor<'l> for DumpVisitor<'l, 'tcx, 'll, D> {
+    fn visit_mod(&mut self, m: &'l ast::Mod, span: Span, attrs: &[ast::Attribute], id: NodeId) {
+        // Since we handle explicit modules ourselves in visit_item, this should
+        // only get called for the root module of a crate.
+        assert_eq!(id, ast::CRATE_NODE_ID);
+
+        let qualname = format!("::{}", self.tcx.node_path_str(id));
+
+        let cm = self.tcx.sess.codemap();
+        let filename = cm.span_to_filename(span);
+        self.dumper.mod_data(ModData {
+            id: id,
+            name: String::new(),
+            qualname: qualname,
+            span: span,
+            scope: id,
+            filename: filename,
+            items: m.items.iter().map(|i| i.id).collect(),
+            visibility: Visibility::Public,
+            docs: docs_for_attrs(attrs),
+            sig: None,
+            attributes: attrs.to_owned(),
+        }.lower(self.tcx));
+        self.nest_scope(id, |v| visit::walk_mod(v, m));
+    }
+
     fn visit_item(&mut self, item: &'l ast::Item) {
         use syntax::ast::ItemKind::*;
         self.process_macro_use(item.span, item.id);

src/librustc_save_analysis/external_data.rs

@@ -392,7 +392,7 @@ pub struct ModData {
     pub items: Vec<DefId>,
     pub visibility: Visibility,
     pub docs: String,
-    pub sig: Signature,
+    pub sig: Option<Signature>,
     pub attributes: Vec<Attribute>,
 }
 
@@ -410,7 +410,7 @@ impl Lower for data::ModData {
             items: self.items.into_iter().map(|id| make_def_id(id, &tcx.hir)).collect(),
             visibility: self.visibility,
             docs: self.docs,
-            sig: self.sig.lower(tcx),
+            sig: self.sig.map(|s| s.lower(tcx)),
             attributes: self.attributes.lower(tcx),
         }
     }

src/librustc_save_analysis/json_api_dumper.rs

@@ -293,7 +293,7 @@ impl Into<Option<Def>> for ModData {
                 parent: None,
                 decl_id: None,
                 docs: self.docs,
-                sig: Some(self.sig.into()),
+                sig: self.sig.map(|s| s.into()),
                 attributes: vec![],
             }),
             _ => None,

src/librustc_save_analysis/json_dumper.rs

@@ -121,7 +121,7 @@ impl<'b, O: DumpOutput + 'b> Dump for JsonDumper<O> {
             children: data.items.into_iter().map(|id| id_from_def_id(id)).collect(),
             decl_id: None,
             docs: data.docs,
-            sig: Some(data.sig.into()),
+            sig: data.sig.map(|s| s.into()),
             attributes: data.attributes.into_iter().map(|a| a.into()).collect(),
         };
         if def.span.file_name.to_str().unwrap() != def.value {

src/librustc_save_analysis/lib.rs

@@ -258,7 +258,7 @@ impl<'l, 'tcx: 'l> SaveContext<'l, 'tcx> {
                     items: m.items.iter().map(|i| i.id).collect(),
                     visibility: From::from(&item.vis),
                     docs: docs_for_attrs(&item.attrs),
-                    sig: self.sig_base(item),
+                    sig: Some(self.sig_base(item)),
                     attributes: item.attrs.clone(),
                 }))
             }

src/librustdoc/externalfiles.rs

@@ -13,6 +13,7 @@ use std::io::prelude::*;
 use std::io;
 use std::path::Path;
 use std::str;
+use html::markdown::{Markdown, RenderType};
 
 #[derive(Clone)]
 pub struct ExternalHtml{
@@ -28,17 +29,26 @@ pub struct ExternalHtml{
 }
 
 impl ExternalHtml {
-    pub fn load(in_header: &[String], before_content: &[String], after_content: &[String])
+    pub fn load(in_header: &[String], before_content: &[String], after_content: &[String],
+                md_before_content: &[String], md_after_content: &[String], render: RenderType)
             -> Option<ExternalHtml> {
         load_external_files(in_header)
             .and_then(|ih|
                 load_external_files(before_content)
                     .map(|bc| (ih, bc))
             )
+            .and_then(|(ih, bc)|
+                load_external_files(md_before_content)
+                    .map(|m_bc| (ih, format!("{}{}", bc, Markdown(&m_bc, render))))
+            )
             .and_then(|(ih, bc)|
                 load_external_files(after_content)
                     .map(|ac| (ih, bc, ac))
             )
+            .and_then(|(ih, bc, ac)|
+                load_external_files(md_after_content)
+                    .map(|m_ac| (ih, bc, format!("{}{}", ac, Markdown(&m_ac, render))))
+            )
             .map(|(ih, bc, ac)|
                 ExternalHtml {
                     in_header: ih,

src/librustdoc/lib.rs

@@ -160,6 +160,14 @@ pub fn opts() -> Vec<RustcOptGroup> {
                         "files to include inline between the content and </body> of a rendered \
                          Markdown file or generated documentation",
                         "FILES")),
+        unstable(optmulti("", "markdown-before-content",
+                          "files to include inline between <body> and the content of a rendered \
+                           Markdown file or generated documentation",
+                          "FILES")),
+        unstable(optmulti("", "markdown-after-content",
+                          "files to include inline between the content and </body> of a rendered \
+                           Markdown file or generated documentation",
+                          "FILES")),
         stable(optopt("", "markdown-playground-url",
                       "URL to send code snippets to", "URL")),
         stable(optflag("", "markdown-no-toc", "don't include table of contents")),
@@ -275,7 +283,10 @@ pub fn main_args(args: &[String]) -> isize {
     let external_html = match ExternalHtml::load(
             &matches.opt_strs("html-in-header"),
             &matches.opt_strs("html-before-content"),
-            &matches.opt_strs("html-after-content")) {
+            &matches.opt_strs("html-after-content"),
+            &matches.opt_strs("markdown-before-content"),
+            &matches.opt_strs("markdown-after-content"),
+            render_type) {
         Some(eh) => eh,
         None => return 3,
     };

src/libsyntax/parse/lexer/mod.rs

@@ -754,9 +754,7 @@ impl<'a> StringReader<'a> {
         // integer literal followed by field/method access or a range pattern
         // (`0..2` and `12.foo()`)
         if self.ch_is('.') && !self.nextch_is('.') &&
-           !self.nextch()
-                .unwrap_or('\0')
-                .is_xid_start() {
+           !ident_start(self.nextch()) {
             // might have stuff after the ., and if it does, it needs to start
             // with a number
             self.bump();

src/libsyntax/util/node_count.rs

@@ -31,7 +31,7 @@ impl<'ast> Visitor<'ast> for NodeCounter {
         self.count += 1;
         walk_ident(self, span, ident);
     }
-    fn visit_mod(&mut self, m: &Mod, _s: Span, _n: NodeId) {
+    fn visit_mod(&mut self, m: &Mod, _s: Span, _a: &[Attribute], _n: NodeId) {
         self.count += 1;
         walk_mod(self, m)
     }

src/libsyntax/visit.rs

@@ -56,7 +56,9 @@ pub trait Visitor<'ast>: Sized {
     fn visit_ident(&mut self, span: Span, ident: Ident) {
         walk_ident(self, span, ident);
     }
-    fn visit_mod(&mut self, m: &'ast Mod, _s: Span, _n: NodeId) { walk_mod(self, m) }
+    fn visit_mod(&mut self, m: &'ast Mod, _s: Span, _attrs: &[Attribute], _n: NodeId) {
+        walk_mod(self, m);
+    }
     fn visit_foreign_item(&mut self, i: &'ast ForeignItem) { walk_foreign_item(self, i) }
     fn visit_global_asm(&mut self, ga: &'ast GlobalAsm) { walk_global_asm(self, ga) }
     fn visit_item(&mut self, i: &'ast Item) { walk_item(self, i) }
@@ -172,7 +174,7 @@ pub fn walk_ident<'a, V: Visitor<'a>>(visitor: &mut V, span: Span, ident: Ident)
 }
 
 pub fn walk_crate<'a, V: Visitor<'a>>(visitor: &mut V, krate: &'a Crate) {
-    visitor.visit_mod(&krate.module, krate.span, CRATE_NODE_ID);
+    visitor.visit_mod(&krate.module, krate.span, &krate.attrs, CRATE_NODE_ID);
     walk_list!(visitor, visit_attribute, &krate.attrs);
 }
 
@@ -249,7 +251,7 @@ pub fn walk_item<'a, V: Visitor<'a>>(visitor: &mut V, item: &'a Item) {
                              item.id)
         }
         ItemKind::Mod(ref module) => {
-            visitor.visit_mod(module, item.span, item.id)
+            visitor.visit_mod(module, item.span, &item.attrs, item.id)
         }
         ItemKind::ForeignMod(ref foreign_module) => {
             walk_list!(visitor, visit_foreign_item, &foreign_module.items);

src/libsyntax_ext/proc_macro_registrar.rs

@@ -329,7 +329,7 @@ impl<'a> Visitor<'a> for CollectProcMacros<'a> {
         visit::walk_item(self, item);
     }
 
-    fn visit_mod(&mut self, m: &'a ast::Mod, _s: Span, id: NodeId) {
+    fn visit_mod(&mut self, m: &'a ast::Mod, _s: Span, _a: &[ast::Attribute], id: NodeId) {
         let mut prev_in_root = self.in_root;
         if id != ast::CRATE_NODE_ID {
             prev_in_root = mem::replace(&mut self.in_root, false);

src/test/parse-fail/underscore-suffix-for-float.rs

@@ -0,0 +1,13 @@
+// Copyright 2017 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+fn main() {
+    let a = 42._; //~ ERROR unexpected token: `_`
+}

src/test/run-pass/underscore-method-after-integer.rs

@@ -0,0 +1,19 @@
+// Copyright 2017 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+trait Tr : Sized {
+    fn _method_on_numbers(self) {}
+}
+
+impl Tr for i32 {}
+
+fn main() {
+    42._method_on_numbers();
+}