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aesop ラッパの属性を手作りする例を示す #1117

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Nov 16, 2024
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aesop ラッパの属性を手作りする例を示す #1117

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22 changes: 22 additions & 0 deletions LeanByExample/Reference/Declarative/DeclareAesopRuleSets.lean
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Original file line number Diff line number Diff line change
Expand Up @@ -47,6 +47,8 @@ example : True := by
macro "add_hoge_rules" e:Aesop.rule_expr : command =>
`(command| add_aesop_rules (rule_sets := [HogeRules]) $e)

namespace Command --#

/-- `True` を模して自作した命題 -/
inductive MyTrue : Prop where
| intro
Expand All @@ -69,3 +71,23 @@ example : MyTrue := by
fail_if_success aesop

apply MyTrue.intro

end Command --#
/- あるいは、`[aesop]` 属性と同等の機能を持つ `[hoge]` 属性を作成して、それを使ってルールを登録することもできます。-/

/-- `hoge` タクティク用のルールを追加する -/
macro "hoge" e:Aesop.rule_expr : attr =>
`(attr| aesop (rule_sets := [HogeRules]) $e)

namespace Attr --#

/-- `True` を模して自作した命題 -/
@[hoge safe constructors]
inductive MyTrue : Prop where
| intro

example : MyTrue := by
-- `hoge` で証明できる!
hoge

end Attr --#
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