diff options
| author | Alec Theriault <alec.theriault@gmail.com> | 2019-01-31 01:37:25 -0800 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2019-01-31 01:37:25 -0800 |
| commit | 1b26460fb3b5df5215cc1e6715661cbc7c950085 (patch) | |
| tree | 0b5ac6285ecf432021e8365567d48eeb6249f44b /CHANGES.md | |
| parent | 4c02498a24e6ceb775528bed043b66340296ad06 (diff) | |
Use `.hie` files for the Hyperlinker backend (#977)
# Summary
This is a large architectural change to the Hyperlinker.
* extract link (and now also type) information from `.hie` instead
of doing ad-hoc SYB traversals of the `RenamedSource`. Also
adds a superb type-on-hover feature (#715).
* re-engineer the lexer to avoid needless string conversions. By going
directly through GHC's `P` monad and taking bytestring slices, we
avoid a ton of allocation and have better handling of position
pragmas and CPP.
In terms of performance, the Haddock side of things has gotten _much_
more efficient. Unfortunately, much of this is cancelled out by the
increased GHC workload for generating `.hie` files. For the full set of
boot libs (including `ghc`-the-library)
* the sum of total time went down by 9-10% overall
* the sum of total allocations went down by 6-7%
# Motivation
Haddock is moving towards working entirely over `.hi` and `.hie` files.
This change means we no longer need the `RenamedSource` from
`TypecheckedModule` (something which is _not_ in `.hi` files).
# Details
Along the way a bunch of things were fixed:
* Cross package (and other) links are now more reliable (#496)
* The lexer tries to recover from errors on every line (instead of at CPP
boundaries)
* `LINE`/`COLUMN` pragmas are taken into account
* filter out zero length tokens before rendering
* avoid recomputing the `ModuleName`-based `SrcMap`
* remove the last use of `Documentation.Haddock.Utf8` (see #998)
* restructure temporary folder logic for `.hi`/`.hie` model
Diffstat (limited to 'CHANGES.md')
| -rw-r--r-- | CHANGES.md | 6 |
1 files changed, 6 insertions, 0 deletions
@@ -6,6 +6,12 @@ * Support inline markup in markdown-style links (#875) + * The hyperlinker backend has been re-engineered to use HIE files + and display type annotations on expressions (#977) + + * The hyperlinker backend lexer is now more incremental, faster, and + more memory efficient (#977) + ## Changes in version 2.22.0 * Make `--package-version` optional for `--hoogle` (#899) |