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Fix Issue 10104 - Group of array of const/immutable

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This commit is contained in:
Peter Alexander 2014-12-14 17:02:31 +00:00
parent 3abf8c1a29
commit d1ffb938b5
2 changed files with 56 additions and 4 deletions
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47
std/algorithm.d
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@ -4454,10 +4454,26 @@ forward range in all other cases.
*/
struct Group(alias pred, R) if (isInputRange!R)
{
private R _input;
private Tuple!(ElementType!R, uint) _current;
private alias comp = binaryFun!pred;
private alias E = ElementType!R;
static if ((is(E == class) || is(E == interface)) &&
(is(E == const) || is(E == immutable)))
{
private alias MutableE = Rebindable!E;
}
else static if (is(E : Unqual!E))
{
private alias MutableE = Unqual!E;
}
else
{
private alias MutableE = E;
}
private R _input;
private Tuple!(MutableE, uint) _current;
this(R input)
{
_input = input;
@ -4494,7 +4510,7 @@ struct Group(alias pred, R) if (isInputRange!R)
}
}
@property ref Tuple!(ElementType!R, uint) front()
@property auto ref front()
{
assert(!empty);
return _current;
@ -4547,6 +4563,31 @@ Group!(pred, Range) group(alias pred = "a == b", Range)(Range r)
}
}
unittest
{
// Issue 13857
immutable(int)[] a1 = [1,1,2,2,2,3,4,4,5,6,6,7,8,9,9,9];
auto g1 = group(a1);
// Issue 13162
immutable(ubyte)[] a2 = [1, 1, 1, 0, 0, 0];
auto g2 = a2.group;
// Issue 10104
const a3 = [1, 1, 2, 2];
auto g3 = a3.group;
interface I {}
class C : I {}
const C[] a4 = [new const C()];
auto g4 = a4.group!"a is b";
immutable I[] a5 = [new immutable C()];
auto g5 = a5.group!"a is b";
const(int[][]) a6 = [[1], [1]];
auto g6 = a6.group;
}
// Used by groupBy.
/**