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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 => {} // OK, `BracedVariant` is a fresh binding
}
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; // OK, `BracedVariant` is a fresh binding
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
}
|
