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Add support for built-in Natural literals in Core.
- Replace MachInt,MachWord, LitInteger, etc. with a single LitNumber
constructor with a LitNumType field
- Support built-in Natural literals
- Add desugar warning for negative literals
- Move Maybe(..) from GHC.Base to GHC.Maybe for module dependency
reasons
This patch introduces only a few rules for Natural literals (compared
to Integer's rules). Factorization of the built-in rules for numeric
literals will be done in another patch as this one is already big to
review.
Test Plan:
validate
test build with integer-simple
Reviewers: hvr, bgamari, goldfire, Bodigrim, simonmar
Reviewed By: bgamari
Subscribers: phadej, simonpj, RyanGlScott, carter, hsyl20, rwbarton,
thomie
GHC Trac Issues: #14170, #14465
Differential Revision: https://phabricator.haskell.org/D4212
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Reviewers: dfeuer, austin, hvr, bgamari
Reviewed By: bgamari
Subscribers: thomie
Differential Revision: https://phabricator.haskell.org/D3024
GHC Trac Issues: #13181
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CallStack requires tuples, instances of which are defined in GHC.Tuple.
Unfortunately the change made in D757 to the `Typeable` deriving
mechanism means that `GHC.Tuple` must import `GHC.Types` for types
necessary to generate type representations. This results in a cycle.
Test Plan: Validate
Reviewers: gridaphobe, austin, hvr
Subscribers: thomie
Differential Revision: https://phabricator.haskell.org/D1298
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This patch modifies `error`, `undefined`, and `assertError` to use
implicit call-stacks to provide better error messages to users.
There are a few knock-on effects:
- `GHC.Classes.IP` is now wired-in so it can be used in the wired-in
types for `error` and `undefined`.
- `TysPrim.tyVarList` has been replaced with a new function
`TysPrim.mkTemplateTyVars`. `tyVarList` made it easy to introduce
subtle bugs when you need tyvars of different kinds. The naive
```
tv1 = head $ tyVarList kind1
tv2 = head $ tyVarList kind2
```
would result in `tv1` and `tv2` sharing a `Unique`, thus substitutions
would be applied incorrectly, treating `tv1` and `tv2` as the same
tyvar. `mkTemplateTyVars` avoids this pitfall by taking a list of kinds
and producing a single tyvar of each kind.
- The types `GHC.SrcLoc.SrcLoc` and `GHC.Stack.CallStack` now live in
ghc-prim.
- The type `GHC.Exception.ErrorCall` has a new constructor
`ErrorCallWithLocation` that takes two `String`s instead of one, the
2nd one being arbitrary metadata about the error (but usually the
call-stack). A bi-directional pattern synonym `ErrorCall` continues to
provide the old API.
Updates Cabal, array, and haddock submodules.
Reviewers: nh2, goldfire, simonpj, hvr, rwbarton, austin, bgamari
Reviewed By: simonpj
Subscribers: rwbarton, rodlogic, goldfire, maoe, simonmar, carter,
liyang, bgamari, thomie
Differential Revision: https://phabricator.haskell.org/D861
GHC Trac Issues: #5273
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This commit mostly converts literate comments into ordinary
Haskell comments or sometimes even Haddock comments, while also
removing literate comments in a few cases where they don't make
much sense anymore.
Moreover, in a few cases trailing whitespaces were removed as well.
Reviewed By: austin
Differential Revision: https://phabricator.haskell.org/D456
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