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// 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.
struct UnitStruct;
struct TupleStruct();
struct BracedStruct{}
enum E {
UnitVariant,
TupleVariant(),
BracedVariant{},
}
use E::*;
const CONST: () = ();
static STATIC: () = ();
fn function() {}
fn main() {
let doesnt_matter = 0;
match UnitStruct {
UnitStruct => {} // OK, `UnitStruct` is a unit struct pattern
}
match doesnt_matter {
TupleStruct => {} //~ ERROR match bindings cannot shadow tuple structs
}
match doesnt_matter {
BracedStruct => {} // OK, `BracedStruct` is a fresh binding
}
match UnitVariant {
UnitVariant => {} // OK, `UnitVariant` is a unit variant pattern
}
match doesnt_matter {
TupleVariant => {} //~ ERROR match bindings cannot shadow tuple variants
}
match doesnt_matter {
BracedVariant => {} //~ ERROR match bindings cannot shadow struct variants
}
match CONST {
CONST => {} // OK, `CONST` is a const pattern
}
match doesnt_matter {
STATIC => {} //~ ERROR match bindings cannot shadow statics
}
match doesnt_matter {
function => {} // OK, `function` is a fresh binding
}
let UnitStruct = UnitStruct; // OK, `UnitStruct` is a unit struct pattern
let TupleStruct = doesnt_matter; //~ ERROR let bindings cannot shadow tuple structs
let BracedStruct = doesnt_matter; // OK, `BracedStruct` is a fresh binding
let UnitVariant = UnitVariant; // OK, `UnitVariant` is a unit variant pattern
let TupleVariant = doesnt_matter; //~ ERROR let bindings cannot shadow tuple variants
let BracedVariant = doesnt_matter; //~ ERROR let bindings cannot shadow struct variants
let CONST = CONST; // OK, `CONST` is a const pattern
let STATIC = doesnt_matter; //~ ERROR let bindings cannot shadow statics
let function = doesnt_matter; // OK, `function` is a fresh binding
}
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