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remove type coercion from array values to references

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* Implements #3768. This is a sweeping breaking change that requires
   many (trivial) edits to Zig source code. Array values no longer
   coerced to slices; however one may use `&` to obtain a reference to
   an array value, which may then be coerced to a slice.

 * Adds `IrInstruction::dump`, for debugging purposes. It's useful to
   call to inspect the instruction when debugging Zig IR.

 * Fixes bugs with result location semantics. See the new behavior test
   cases, and compile error test cases.

 * Fixes bugs with `@typeInfo` not properly resolving const values.

 * Behavior tests are passing but std lib tests are not yet. There
   is more work to do before merging this branch.
This commit is contained in:
Andrew Kelley
2019-11-27 03:30:39 -05:00
parent 379d547603
commit bf3ac66150
67 changed files with 727 additions and 837 deletions
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24
lib/std/packed_int_array.zig
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@@ -201,7 +201,7 @@ pub fn PackedIntArrayEndian(comptime Int: type, comptime endian: builtin.Endian,
///Return the Int stored at index
pub fn get(self: Self, index: usize) Int {
debug.assert(index < int_count);
return Io.get(self.bytes, index, 0);
return Io.get(&self.bytes, index, 0);
}
///Copy int into the array at index
@@ -528,16 +528,7 @@ test "PackedInt(Array/Slice) sliceCast" {
test "PackedInt(Array/Slice)Endian" {
{
const PackedArrayBe = PackedIntArrayEndian(u4, .Big, 8);
var packed_array_be = PackedArrayBe.init([_]u4{
0,
1,
2,
3,
4,
5,
6,
7,
});
var packed_array_be = PackedArrayBe.init([_]u4{ 0, 1, 2, 3, 4, 5, 6, 7 });
testing.expect(packed_array_be.bytes[0] == 0b00000001);
testing.expect(packed_array_be.bytes[1] == 0b00100011);
@@ -563,16 +554,7 @@ test "PackedInt(Array/Slice)Endian" {
{
const PackedArrayBe = PackedIntArrayEndian(u11, .Big, 8);
var packed_array_be = PackedArrayBe.init([_]u11{
0,
1,
2,
3,
4,
5,
6,
7,
});
var packed_array_be = PackedArrayBe.init([_]u11{ 0, 1, 2, 3, 4, 5, 6, 7 });
testing.expect(packed_array_be.bytes[0] == 0b00000000);
testing.expect(packed_array_be.bytes[1] == 0b00000000);
testing.expect(packed_array_be.bytes[2] == 0b00000100);