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@ -46,13 +46,47 @@ elab "Introduction" t:str : command => do
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| .World => modifyCurWorld fun world => pure {world with introduction := t.getString}
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| .Game => modifyCurGame fun game => pure {game with introduction := t.getString}
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/-- Define the statement of the current level. -/
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elab "Statement" statementName:ident ? descr:str ? sig:declSig val:declVal : command => do
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-- TODO: Instead of this, it would be nice to have a proper syntax parser that enables
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-- us highlighting on the client side.
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partial def reprintCore : Syntax → Option Format
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| Syntax.missing => none
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| Syntax.atom _ val => val.trim
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| Syntax.ident _ rawVal _ _ => rawVal.toString
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| Syntax.node _ kind args =>
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match args.toList.filterMap reprintCore with
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| [] => none
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| [arg] => arg
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| args => Format.group <| Format.nest 2 <| Format.joinSep args " "
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def reprint (stx : Syntax) : Format :=
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reprintCore stx |>.getD ""
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-- macro mods:declModifiers "lemma" n:declId sig:declSig val:declVal : command => `($mods:declModifiers theorem $n $sig $val)
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/-- Define the statement of the current level.
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Arguments:
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- ident: (Optional) The name of the statemtent.
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- descr: The human-readable version of the lemma as string. Accepts Markdown and Mathjax.
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-/
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elab "Statement" statementName:ident ? descr:str sig:declSig val:declVal : command => do
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let lvlIdx ← getCurLevelIdx
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let declName : Name := (← getCurGame).name ++ (← getCurWorld).name ++ ("level" ++ toString lvlIdx : String)
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elabCommand (← `(theorem $(mkIdent declName) $sig $val))
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modifyCurLevel fun level => pure {level with goal := sig}
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-- TODO: Do something with the lemma name.
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let defaultDeclName : Name := (← getCurGame).name ++ (← getCurWorld).name ++
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("level" ++ toString lvlIdx : String)
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let thmStatement ← `(theorem $(mkIdent defaultDeclName) $sig $val)
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-- let thmStatement' ← match statementName with
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-- | none => `(lemma $(mkIdent "XX") $sig $val) -- TODO: Make it into an `example`
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-- | some name => `(lemma $name $sig $val)
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elabCommand thmStatement
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modifyCurLevel fun level => pure {level with
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goal := sig,
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descrText := descr.getString,
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descrFormat := match statementName with
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| none => "example " ++ (toString <| reprint sig.raw) ++ " := by"
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| some name => (Format.join ["lemma ", reprint name.raw, " ", reprint sig.raw, " := by"]).pretty 10 -- "lemma " ++ (toString <| reprint name.raw) ++ " " ++ (Format.pretty (reprint sig.raw) 40) ++ " := by"
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} -- Format.pretty <| format thmStatement.raw }
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/-- Define the conclusion of the current game or current level if some
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building a level. -/
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Jon Eugster
2 years ago