lean4-htt/src/Leanpkg/Manifest.lean
2021-05-28 14:19:59 +02:00

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/-
Copyright (c) 2017 Microsoft Corporation. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Gabriel Ebner, Sebastian Ullrich
-/
import Leanpkg.Toml
import Leanpkg.LeanVersion
open System
namespace Leanpkg
inductive Source where
| path (dir : System.FilePath) : Source
| git (url rev : String) (branch : Option String) : Source
namespace Source
def fromToml (v : Toml.Value) : Option Source :=
(do let Toml.Value.str dir ← v.lookup "path" | none
path ⟨dir⟩) <|>
(do let Toml.Value.str url ← v.lookup "git" | none
let Toml.Value.str rev ← v.lookup "rev" | none
match v.lookup "branch" with
| none => git url rev none
| some (Toml.Value.str branch) => git url rev (some branch)
| _ => none)
def toToml : Source → Toml.Value
| path dir => Toml.Value.table [("path", Toml.Value.str dir.toString)]
| git url rev none =>
Toml.Value.table [("git", Toml.Value.str url), ("rev", Toml.Value.str rev)]
| git url rev (some branch) =>
Toml.Value.table [("git", Toml.Value.str url), ("branch", Toml.Value.str branch), ("rev", Toml.Value.str rev)]
end Source
structure Dependency where
name : String
src : Source
structure Manifest where
name : String
version : String
leanVersion : String := leanVersionString
timeout : Option Nat := none
path : Option FilePath := none
dependencies : List Dependency := []
namespace Manifest
def effectivePath (m : Manifest) : FilePath :=
m.path.getD ⟨"."⟩
def fromToml (t : Toml.Value) : Option Manifest := OptionM.run do
let pkg ← t.lookup "package"
let Toml.Value.str n ← pkg.lookup "name" | none
let Toml.Value.str ver ← pkg.lookup "version" | none
let leanVer ← match pkg.lookup "lean_version" with
| some (Toml.Value.str leanVer) => some leanVer
| none => some leanVersionString
| _ => none
let tm ← match pkg.lookup "timeout" with
| some (Toml.Value.nat timeout) => some (some timeout)
| none => some none
| _ => none
let path ← match pkg.lookup "path" with
| some (Toml.Value.str path) => some (some ⟨path⟩)
| none => some none
| _ => none
let Toml.Value.table deps ← t.lookup "dependencies" <|> some (Toml.Value.table []) | none
let deps ← deps.mapM fun ⟨n, src⟩ => do Dependency.mk n (← Source.fromToml src)
return { name := n, version := ver, leanVersion := leanVer,
path := path, dependencies := deps, timeout := tm }
def fromFile (fn : System.FilePath) : IO Manifest := do
let cnts ← IO.FS.readFile fn
let toml ← Toml.parse cnts
let some manifest ← pure (fromToml toml)
| throw <| IO.userError s!"cannot read manifest from {fn}"
manifest
end Manifest
def leanpkgTomlFn : System.FilePath := ⟨"leanpkg.toml"⟩
end Leanpkg