80a0200ab2
@Kha another significant milestone: all files at `src/Lean/Meta` are being compiled with the new frontend.
68 lines
2.5 KiB
Text
68 lines
2.5 KiB
Text
/-
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Copyright (c) 2020 Sebastian Ullrich. All rights reserved.
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Released under Apache 2.0 license as described in the file LICENSE.
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Authors: Sebastian Ullrich
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-/
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import Lean.Delaborator
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import Lean.PrettyPrinter.Parenthesizer
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import Lean.PrettyPrinter.Formatter
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import Lean.Parser.Module
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namespace Lean
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namespace Meta end Meta -- HACK for old frontend
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open Meta (MetaM) -- HACK for old frontend
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def PPContext.runCoreM {α : Type} (ppCtx : PPContext) (x : CoreM α) : IO α :=
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Prod.fst <$> x.toIO { options := ppCtx.opts } { env := ppCtx.env }
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def PPContext.runMetaM {α : Type} (ppCtx : PPContext) (x : MetaM α) : IO α :=
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ppCtx.runCoreM $ x.run' { lctx := ppCtx.lctx } { mctx := ppCtx.mctx }
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namespace PrettyPrinter
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def ppTerm (stx : Syntax) : CoreM Format := do
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opts ← getOptions;
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let stx := (sanitizeSyntax stx).run' { options := opts };
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parenthesizeTerm stx >>= formatTerm
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def ppExpr (currNamespace : Name) (openDecls : List OpenDecl) (e : Expr) : MetaM Format := do
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lctx ← getLCtx;
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opts ← getOptions;
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let lctx := lctx.sanitizeNames.run' { options := opts };
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Meta.withLCtx lctx #[] $ do
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stx ← delab currNamespace openDecls e;
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liftM $ ppTerm stx
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@[export lean_pp_expr]
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def ppExprLegacy (env : Environment) (mctx : MetavarContext) (lctx : LocalContext) (opts : Options) (e : Expr) : IO Format :=
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Prod.fst <$> ((ppExpr Name.anonymous [] e).run' { lctx := lctx } { mctx := mctx }).toIO { options := opts } { env := env }
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def ppCommand (stx : Syntax) : CoreM Format :=
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parenthesizeCommand stx >>= formatCommand
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def ppModule (stx : Syntax) : CoreM Format := do
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parenthesize Lean.Parser.Module.module.parenthesizer stx >>= format Lean.Parser.Module.module.formatter
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private partial def noContext : MessageData → MessageData
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| MessageData.withContext ctx msg => noContext msg
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| msg => msg
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-- strip context (including environments with registered pretty printers) to prevent infinite recursion when pretty printing pretty printer error
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private def withoutContext {m} [MonadExceptAdapter Exception Exception m m] (x : m Format) : m Format :=
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adaptExcept (fun ex => match ex with
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| Exception.error ref msg => Exception.error ref (noContext msg)
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| e => e)
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x
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@[builtinInit] def registerPPExt : IO Unit := do
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ppFnsRef.set {
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ppExpr := fun ctx e => ctx.runMetaM $ withoutContext $ ppExpr ctx.currNamespace ctx.openDecls e,
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ppTerm := fun ctx stx => ctx.runCoreM $ withoutContext $ ppTerm stx,
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}
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@[builtinInit] private def regTraceClasses : IO Unit := do
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registerTraceClass `PrettyPrinter;
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pure ()
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end PrettyPrinter
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end Lean
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