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Sema: add coercion from [:x]T to [*:x]T

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This commit is contained in:
Veikka Tuominen 2022-03-10 12:02:31 +02:00
parent f736cde397
commit b9f521b402
1 changed files with 32 additions and 2 deletions
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34
src/Sema.zig
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@ -16033,7 +16033,6 @@ fn coerce(
},
.Pointer => p: {
const inst_info = inst_ty.ptrInfo().data;
if (inst_info.size == .Slice) break :p;
switch (try sema.coerceInMemoryAllowed(
block,
dest_info.pointee_type,
@ -16046,6 +16045,14 @@ fn coerce(
.ok => {},
.no_match => break :p,
}
if (inst_info.size == .Slice) {
if (dest_info.sentinel == null or inst_info.sentinel == null or
!dest_info.sentinel.?.eql(inst_info.sentinel.?, dest_info.pointee_type))
break :p;
const slice_ptr = try sema.analyzeSlicePtr(block, inst_src, inst, inst_ty);
return sema.coerceCompatiblePtrs(block, dest_ty, slice_ptr, inst_src);
}
return sema.coerceCompatiblePtrs(block, dest_ty, inst, inst_src);
},
else => {},
@ -16089,7 +16096,30 @@ fn coerce(
return sema.coerceTupleToSlicePtrs(block, dest_ty, dest_ty_src, inst, inst_src);
}
},
.Many => {},
.Many => p: {
const inst_info = inst_ty.ptrInfo().data;
if (inst_info.size != .Slice) break :p;
switch (try sema.coerceInMemoryAllowed(
block,
dest_info.pointee_type,
inst_info.pointee_type,
dest_info.mutable,
target,
dest_ty_src,
inst_src,
)) {
.ok => {},
.no_match => break :p,
}
if (dest_info.sentinel == null or inst_info.sentinel == null or
!dest_info.sentinel.?.eql(inst_info.sentinel.?, dest_info.pointee_type))
break :p;
const slice_ptr = try sema.analyzeSlicePtr(block, inst_src, inst, inst_ty);
return sema.coerceCompatiblePtrs(block, dest_ty, slice_ptr, inst_src);
},
}
// This will give an extra hint on top of what the bottom of this func would provide.