| ... | ... | @@ -470,31 +470,18 @@ pub fn eql(comptime T: type, a: []const T, b: []const T) bool { |
| 470 | 470 | return true; |
| 471 | 471 | } |
| 472 | 472 | |
| 473 | | pub fn len(comptime T: type, ptr: var) usize { |
| 474 | | const sentinel: T = comptime meta.Sentinel(@TypeOf(ptr)); |
| 473 | pub fn len(comptime T: type, ptr: [*:0]const T) usize { |
| 475 | 474 | var count: usize = 0; |
| 476 | | while (ptr[count] != sentinel) : (count += 1) {} |
| 475 | while (ptr[count] != 0) : (count += 1) {} |
| 477 | 476 | return count; |
| 478 | 477 | } |
| 479 | 478 | |
| 480 | | /// Given a sentintel-terminated pointer-to-many, find the sentintel and return a slice. |
| 481 | | pub fn pointerToSlice(comptime T: type, ptr: blk: { |
| 482 | | var info = @typeInfo(T).Pointer; |
| 483 | | info.size = .Many; |
| 484 | | break :blk @Type(std.builtin.TypeInfo{ .Pointer = info }); |
| 485 | | }) T { |
| 486 | | const sentinel = comptime meta.Sentinel(T); |
| 487 | | return ptr[0..len(meta.Child(T), ptr) :sentinel]; |
| 488 | | } |
| 489 | | |
| 490 | | /// Deprecated; use pointerToSlice instead |
| 491 | 479 | pub fn toSliceConst(comptime T: type, ptr: [*:0]const T) [:0]const T { |
| 492 | | return pointerToSlice([:0]const T, ptr); |
| 480 | return ptr[0..len(T, ptr) :0]; |
| 493 | 481 | } |
| 494 | 482 | |
| 495 | | /// Deprecated; use pointerToSlice instead |
| 496 | 483 | pub fn toSlice(comptime T: type, ptr: [*:0]T) [:0]T { |
| 497 | | return pointerToSlice([:0]T, ptr); |
| 484 | return ptr[0..len(T, ptr) :0]; |
| 498 | 485 | } |
| 499 | 486 | |
| 500 | 487 | /// Returns true if all elements in a slice are equal to the scalar value provided |
Andrew Kelley <andrew@ziglang.org> 2020-03-01 13:07:31-05:00
Commit is signed but in an unrecognized format.