Revision - b2b713d - Don't create Type{...} for incomplete types in most cases - origin: https://github.com/JuliaLang/julia

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19 April 2024, 06:28:37 UTC

Revision b2b713d8dc918221be4a43b12d0f08cff7635eb5 authored by Keno Fischer on 11 September 2022, 01:29:20 UTC, committed by N5N3 on 31 January 2023, 12:19:35 UTC

Don't create Type{...} for incomplete types in most cases

Core.Typeof is used implicitly in the system, but for types with
free type parameters, e.g. `Vector{Core.TypeVar(:T)}`, it expects
to subsequently be wrapped in a UnionAll. In particular, it is
not in general valid to perform type queries on the result of
`Core.Typeof` (without wrapping it in a UnionAll), but we were
attempting to do so in a number of places. Of course, this is a
bit of a rare sitatuation, since we're not in a habit of passing
around types with free typevars, but since those are valid objects
I think it is better to be defensive.

This introduces `Base.TypeofValid` (better name suggestions welcome),
which is like `Core.Typeof`, except that types with free typevars
get mapped to `DataType`, rather than `Type{}` with a free typevars.
As a result, it is always valid to perform type system operations
on the result of this call.

1 parent 94c4fb5

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Tip revision: b2b713d8dc918221be4a43b12d0f08cff7635eb5 authored by Keno Fischer on 11 September 2022, 01:29:20 UTC
Don't create Type{...} for incomplete types in most cases

Tip revision: b2b713d

File	Mode	Size
.devcontainer
.github
base
cli
contrib
deps
doc
etc
src
stdlib
test
.buildkite-external-version	-rw-r--r--	5 bytes
.clang-format	-rw-r--r--	3.3 KB
.clangd	-rw-r--r--	114 bytes
.codecov.yml	-rw-r--r--	52 bytes
.git-blame-ignore-revs	-rw-r--r--	294 bytes
.gitattributes	-rw-r--r--	65 bytes
.gitignore	-rw-r--r--	514 bytes
.mailmap	-rw-r--r--	12.1 KB
CITATION.bib	-rw-r--r--	513 bytes
CITATION.cff	-rw-r--r--	940 bytes
CONTRIBUTING.md	-rw-r--r--	23.1 KB
HISTORY.md	-rw-r--r--	363.4 KB
LICENSE.md	-rw-r--r--	1.3 KB
Make.inc	-rw-r--r--	53.0 KB
Makefile	-rw-r--r--	30.1 KB
NEWS.md	-rw-r--r--	1.7 KB
README.md	-rw-r--r--	7.3 KB
THIRDPARTY.md	-rw-r--r--	3.7 KB
VERSION	-rw-r--r--	11 bytes
julia.spdx.json	-rw-r--r--	35.8 KB
sysimage.mk	-rw-r--r--	4.1 KB

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Don't create Type{...} for incomplete types in most cases

README.md