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Ben Gamari pushed to branch wip/torsten.schmits/0475-tuple-syntax-2 at <a href="https://gitlab.haskell.org/ghc/ghc">Glasgow Haskell Compiler / GHC</a>
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Commits:
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<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/24973ed1e703d7dd217e362b28c9983b57204213">24973ed1</a></strong>
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<span> by Torsten Schmits </span> <i> at 2024-02-29T10:33:18-05:00 </i>
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<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 14px; color: #333238; position: relative; font-family: var(--default-mono-font, "GitLab Mono"),"JetBrains Mono","Menlo","DejaVu Sans Mono","Liberation Mono","Consolas","Ubuntu Mono","Courier New","andale mono","lucida console",monospace; word-break: break-all; word-wrap: break-word; background-color: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>Introduce ListTuplePuns extension
This implements Proposal 0475, introducing the `ListTuplePuns` extension
which is enabled by default.
Disabling this extension makes it invalid to refer to list, tuple and
sum type constructors by using built-in syntax like `[Int]`,
`(Int, Int)`, `(# Int#, Int# #)` or `(# Int | Int #)`.
Instead, this syntax exclusively denotes data constructors for use with
`DataKinds`.
The conventional way of referring to these data constructors by
prefixing them with a single quote (`'(Int, Int)`) is now a parser
error.
Tuple declarations have been moved to `GHC.Tuple.Prim` and the `Solo`
data constructor has been renamed to `MkSolo` (in a previous commit).
Unboxed tuples and sums now have real source declarations in `GHC.Types`.
Unit and solo types for tuples are now called `Unit`, `Unit#`, `Solo`
and `Solo#`.
Constraint tuples now have the unambiguous type constructors `CTuple<n>`
as well as `CUnit` and `CSolo`, defined in `GHC.Classes` like before.
A new parser construct has been added for the unboxed sum data
constructor declarations.
The type families `Tuple`, `Sum#` etc. that were intended to provide
nicer syntax have been omitted from this change set due to inference
problems, to be implemented at a later time.
See the MR discussion for more info.
Updates the submodule utils/haddock.
Updates the cabal submodule due to new language extension.
Metric Increase:
haddock.base
Metric Decrease:
MultiLayerModulesTH_OneShot
size_hello_artifact
Proposal document: https://github.com/ghc-proposals/ghc-proposals/blob/master/proposals/0475-tuple-syntax.rst
Merge request: https://gitlab.haskell.org/ghc/ghc/-/merge_requests/8820
Tracking ticket: https://gitlab.haskell.org/ghc/ghc/-/issues/21294
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compiler/GHC/Builtin/Names.hs
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compiler/GHC/Builtin/Types.hs
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compiler/GHC/Builtin/Types.hs-boot
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compiler/GHC/Builtin/Uniques.hs
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compiler/GHC/Utils/Outputable.hs
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