Test pattern macros

Author: Keegan McAllister

src/test/compile-fail/macro-incomplete-parse.rs

@@ -22,8 +22,16 @@ macro_rules! ignored_expr {
     () => ( 1, 2 ) //~ ERROR macro expansion ignores token `,`
 }
 
+macro_rules! ignored_pat {
+    () => ( 1, 2 ) //~ ERROR macro expansion ignores token `,`
+}
+
 ignored_item!()
 
 fn main() {
     ignored_expr!()
+    match 1 {
+        ignored_pat!() => (),
+        _ => (),
+    }
 }

src/test/compile-fail/pattern-macro-hygeine.rs

@@ -0,0 +1,18 @@
+// 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.
+
+#![feature(macro_rules)]
+
+macro_rules! foo ( () => ( x ) )
+
+fn main() {
+    let foo!() = 2;
+    x + 1; //~ ERROR unresolved name `x`
+}

src/test/run-pass/macro-pat.rs

@@ -0,0 +1,75 @@
+// Copyright 2012-2014 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.
+
+#![feature(macro_rules)]
+
+macro_rules! mypat(
+    () => (
+        Some('y')
+    )
+)
+
+macro_rules! char_x(
+    () => (
+        'x'
+    )
+)
+
+macro_rules! some(
+    ($x:pat) => (
+        Some($x)
+    )
+)
+
+macro_rules! indirect(
+    () => (
+        some!(char_x!())
+    )
+)
+
+macro_rules! ident_pat(
+    ($x:ident) => (
+        $x
+    )
+)
+
+fn f(c: Option<char>) -> uint {
+    match c {
+        Some('x') => 1,
+        mypat!() => 2,
+        _ => 3,
+    }
+}
+
+pub fn main() {
+    assert_eq!(1, f(Some('x')));
+    assert_eq!(2, f(Some('y')));
+    assert_eq!(3, f(None));
+
+    assert_eq!(1, match Some('x') {
+        Some(char_x!()) => 1,
+        _ => 2,
+    });
+
+    assert_eq!(1, match Some('x') {
+        some!(char_x!()) => 1,
+        _ => 2,
+    });
+
+    assert_eq!(1, match Some('x') {
+        indirect!() => 1,
+        _ => 2,
+    });
+
+    assert_eq!(3, {
+        let ident_pat!(x) = 2;
+        x+1
+    });
+}