auto merge of #18053 : nick29581/rust/ufcs1, r=pcwalton

With the 'receiver' as an argument and static dispatch. Part of UFCS implementation (#16293).

r?

src/test/compile-fail/call-extern-trait-as-function.rs

@@ -1,17 +0,0 @@
-// Copyright 2013 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.
-
-// issue #6698
-
-fn V() -> bool {
-    std::clone::Clone::clone(true) //~ ERROR error: unresolved name `std::clone::Clone::clone`.
-}
-
-fn main() {}

src/test/compile-fail/method-self-arg-1.rs

@@ -0,0 +1,24 @@
+// Copyright 2014 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.
+
+// Test method calls with self as an argument cannot subvert type checking.
+
+struct Foo;
+
+impl Foo {
+    fn bar(&self) {}
+}
+
+fn main() {
+    let x = Foo;
+    Foo::bar(x); //~ERROR mismatched types: expected `&Foo`, found `Foo`
+    Foo::bar(&&x); //~ERROR mismatched types: expected `&Foo`, found `&&Foo`
+    Foo::bar(&42i); //~ERROR mismatched types: expected `&Foo`, found `&int`
+}

src/test/compile-fail/method-self-arg-2.rs

@@ -0,0 +1,27 @@
+// Copyright 2014 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.
+
+// Test method calls with self as an argument cannot subvert borrow checking.
+
+struct Foo;
+
+impl Foo {
+    fn bar(&self) {}
+    fn baz(&mut self) {}
+}
+
+fn main() {
+    let mut x = Foo;
+    let y = &mut x;
+    Foo::bar(&x); //~ERROR cannot borrow `x`
+
+    let x = Foo;
+    Foo::baz(&x); //~ERROR cannot borrow immutable dereference of `&`-pointer as mutable
+}

src/test/run-pass/method-self-arg-trait.rs

@@ -0,0 +1,75 @@
+// Copyright 2014 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.
+
+// Test method calls with self as an argument
+
+static mut COUNT: u64 = 1;
+
+struct Foo;
+
+trait Bar {
+    fn foo1(&self);
+    fn foo2(self);
+    fn foo3(self: Box<Self>);
+
+    fn bar1(&self) {
+        unsafe { COUNT *= 7; }
+    }
+    fn bar2(self) {
+        unsafe { COUNT *= 11; }
+    }
+    fn bar3(self: Box<Self>) {
+        unsafe { COUNT *= 13; }
+    }
+}
+
+impl Bar for Foo {
+    fn foo1(&self) {
+        unsafe { COUNT *= 2; }
+    }
+
+    fn foo2(self) {
+        unsafe { COUNT *= 3; }
+    }
+
+    fn foo3(self: Box<Foo>) {
+        unsafe { COUNT *= 5; }
+    }
+}
+
+impl Foo {
+    fn baz(self) {
+        unsafe { COUNT *= 17; }
+        // Test internal call.
+        Bar::foo1(&self);
+        Bar::foo2(self);
+        Bar::foo3(box self);
+
+        Bar::bar1(&self);
+        Bar::bar2(self);
+        Bar::bar3(box self);
+    }
+}
+
+fn main() {
+    let x = Foo;
+    // Test external call.
+    Bar::foo1(&x);
+    Bar::foo2(x);
+    Bar::foo3(box x);
+
+    Bar::bar1(&x);
+    Bar::bar2(x);
+    Bar::bar3(box x);
+
+    x.baz();
+
+    unsafe { assert!(COUNT == 2u64*2*3*3*5*5*7*7*11*11*13*13*17); }
+}

src/test/run-pass/method-self-arg.rs

@@ -0,0 +1,54 @@
+// Copyright 2014 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.
+
+// Test method calls with self as an argument
+
+static mut COUNT: uint = 1;
+
+struct Foo;
+
+impl Foo {
+    fn foo(self, x: &Foo) {
+        unsafe { COUNT *= 2; }
+        // Test internal call.
+        Foo::bar(&self);
+        Foo::bar(x);
+
+        Foo::baz(self);
+        Foo::baz(*x);
+
+        Foo::qux(box self);
+        Foo::qux(box *x);
+    }
+
+    fn bar(&self) {
+        unsafe { COUNT *= 3; }
+    }
+
+    fn baz(self) {
+        unsafe { COUNT *= 5; }
+    }
+
+    fn qux(self: Box<Foo>) {
+        unsafe { COUNT *= 7; }
+    }
+}
+
+fn main() {
+    let x = Foo;
+    // Test external call.
+    Foo::bar(&x);
+    Foo::baz(x);
+    Foo::qux(box x);
+
+    x.foo(&x);
+
+    unsafe { assert!(COUNT == 2u*3*3*3*5*5*5*7*7*7); }
+}