104 lines
3.5 KiB
Plaintext
104 lines
3.5 KiB
Plaintext
/-
|
||
Copyright (c) 2022 Henrik Böving. All rights reserved.
|
||
Released under Apache 2.0 license as described in the file LICENSE.
|
||
Authors: Henrik Böving
|
||
-/
|
||
import Lean
|
||
import Lake.Load
|
||
|
||
namespace DocGen4.Output.SourceLinker
|
||
|
||
open Lean
|
||
|
||
/--
|
||
Turns a Github git remote URL into an HTTPS Github URL.
|
||
Three link types from git supported:
|
||
- https://github.com/org/repo
|
||
- https://github.com/org/repo.git
|
||
- git@github.com:org/repo.git
|
||
|
||
TODO: This function is quite brittle and very Github specific, we can
|
||
probably do better.
|
||
-/
|
||
def getGithubBaseUrl (gitUrl : String) : String := Id.run do
|
||
let mut url := gitUrl
|
||
if url.startsWith "git@" then
|
||
url := url.drop 15
|
||
url := url.dropRight 4
|
||
return s!"https://github.com/{url}"
|
||
else if url.endsWith ".git" then
|
||
return url.dropRight 4
|
||
else
|
||
return url
|
||
|
||
/--
|
||
Obtain the Github URL of a project by parsing the origin remote.
|
||
-/
|
||
def getProjectGithubUrl (directory : System.FilePath := "." ) : IO String := do
|
||
let out ← IO.Process.output {
|
||
cmd := "git",
|
||
args := #["remote", "get-url", "origin"],
|
||
cwd := directory
|
||
}
|
||
if out.exitCode != 0 then
|
||
throw <| IO.userError <| "git exited with code " ++ toString out.exitCode
|
||
return out.stdout.trimRight
|
||
|
||
/--
|
||
Obtain the git commit hash of the project that is currently getting analyzed.
|
||
-/
|
||
def getProjectCommit (directory : System.FilePath := "." ) : IO String := do
|
||
let out ← IO.Process.output {
|
||
cmd := "git",
|
||
args := #["rev-parse", "HEAD"]
|
||
cwd := directory
|
||
}
|
||
if out.exitCode != 0 then
|
||
throw <| IO.userError <| "git exited with code " ++ toString out.exitCode
|
||
return out.stdout.trimRight
|
||
|
||
/--
|
||
Given a lake workspace with all the dependencies as well as the hash of the
|
||
compiler release to work with this provides a function to turn names of
|
||
declarations into (optionally positional) Github URLs.
|
||
-/
|
||
def sourceLinker (ws : Lake.Workspace) : IO (Name → Option DeclarationRange → String) := do
|
||
let leanHash := ws.lakeEnv.lean.githash
|
||
-- Compute a map from package names to source URL
|
||
let mut gitMap := Lean.mkHashMap
|
||
let projectBaseUrl := getGithubBaseUrl (← getProjectGithubUrl)
|
||
let projectCommit ← getProjectCommit
|
||
gitMap := gitMap.insert ws.root.name (projectBaseUrl, projectCommit)
|
||
let manifest ← Lake.Manifest.loadOrEmpty ws.root.manifestFile
|
||
|>.run (Lake.MonadLog.eio .normal)
|
||
|>.toIO (fun _ => IO.userError "Failed to load lake manifest")
|
||
for pkg in manifest.packages do
|
||
match pkg with
|
||
| .git _ _ _ url rev .. => gitMap := gitMap.insert pkg.name (getGithubBaseUrl url, rev)
|
||
| .path _ _ _ path =>
|
||
let pkgBaseUrl := getGithubBaseUrl (← getProjectGithubUrl path)
|
||
let pkgCommit ← getProjectCommit path
|
||
gitMap := gitMap.insert pkg.name (pkgBaseUrl, pkgCommit)
|
||
|
||
return fun module range =>
|
||
let parts := module.components.map Name.toString
|
||
let path := (parts.intersperse "/").foldl (· ++ ·) ""
|
||
let root := module.getRoot
|
||
let basic := if root == `Lean ∨ root == `Init then
|
||
s!"https://github.com/leanprover/lean4/blob/{leanHash}/src/{path}.lean"
|
||
else if root == `Lake then
|
||
s!"https://github.com/leanprover/lean4/blob/{leanHash}/src/lake/{path}.lean"
|
||
else
|
||
match ws.packages.find? (·.isLocalModule module) with
|
||
| some pkg =>
|
||
match gitMap.find? pkg.name with
|
||
| some (baseUrl, commit) => s!"{baseUrl}/blob/{commit}/{path}.lean"
|
||
| none => "https://example.com"
|
||
| none => "https://example.com"
|
||
|
||
match range with
|
||
| some range => s!"{basic}#L{range.pos.line}-L{range.endPos.line}"
|
||
| none => basic
|
||
|
||
end DocGen4.Output.SourceLinker
|