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expand_tactic と expand_command を統一する #675

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Aug 23, 2024
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expand_tactic と expand_command を統一する #675

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17 changes: 14 additions & 3 deletions Examples/Command/Declarative/Infix.lean
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Expand Up @@ -51,14 +51,25 @@ open Lean

def lxor (l r : Bool) : Bool := !l && r

/-- コマンドをマクロ展開するコマンド -/
elab "#expand_command " t:command : command => do
/-- `#expand` の入力に渡すための構文カテゴリ -/
declare_syntax_cat macro_stx

-- コマンドとタクティクと項を扱える
syntax command : macro_stx
syntax tactic : macro_stx
syntax term : macro_stx

/-- マクロを展開するコマンド -/
elab "#expand " t:macro_stx : command => do
let t : Syntax := match t.raw with
| .node _ _ #[t] => t
| _ => t.raw
match ← Elab.liftMacroM <| Lean.Macro.expandMacro? t with
| none => logInfo m!"Not a macro"
| some t => logInfo m!"{t}"

/-- info: notation:50 lhs✝:51 " LXOR " rhs✝:51 => lxor lhs✝ rhs✝ -/
#guard_msgs in
#expand_command infix:50 " LXOR " => lxor
#expand infix:50 " LXOR " => lxor

end Infix --#
17 changes: 14 additions & 3 deletions Examples/Command/Declarative/Postfix.lean
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Expand Up @@ -22,14 +22,25 @@ scoped postfix:200 "!" => factorial

open Lean

/-- コマンドをマクロ展開するコマンド -/
elab "#expand_command " t:command : command => do
/-- `#expand` の入力に渡すための構文カテゴリ -/
declare_syntax_cat macro_stx

-- コマンドとタクティクと項を扱える
syntax command : macro_stx
syntax tactic : macro_stx
syntax term : macro_stx

/-- マクロを展開するコマンド -/
elab "#expand " t:macro_stx : command => do
let t : Syntax := match t.raw with
| .node _ _ #[t] => t
| _ => t.raw
match ← Elab.liftMacroM <| Lean.Macro.expandMacro? t with
| none => logInfo m!"Not a macro"
| some t => logInfo m!"{t}"

/-- info: notation:200 arg✝:200 "!" => factorial arg✝ -/
#guard_msgs in
#expand_command postfix:200 "!" => factorial
#expand postfix:200 "!" => factorial

end Postfix --#
17 changes: 14 additions & 3 deletions Examples/Command/Declarative/Prefix.lean
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Expand Up @@ -18,14 +18,25 @@ scoped prefix:90 "⋄" => Nat.succ

open Lean

/-- コマンドをマクロ展開するコマンド -/
elab "#expand_command " t:command : command => do
/-- `#expand` の入力に渡すための構文カテゴリ -/
declare_syntax_cat macro_stx

-- コマンドとタクティクと項を扱える
syntax command : macro_stx
syntax tactic : macro_stx
syntax term : macro_stx

/-- マクロを展開するコマンド -/
elab "#expand " t:macro_stx : command => do
let t : Syntax := match t.raw with
| .node _ _ #[t] => t
| _ => t.raw
match ← Elab.liftMacroM <| Lean.Macro.expandMacro? t with
| none => logInfo m!"Not a macro"
| some t => logInfo m!"{t}"

/-- info: notation:90 "⋄" arg✝:90 => Nat.succ arg✝ -/
#guard_msgs in
#expand_command prefix:90 "⋄" => Nat.succ
#expand prefix:90 "⋄" => Nat.succ

end Prefix --#
17 changes: 14 additions & 3 deletions Examples/Tactic/Exists.lean
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Expand Up @@ -36,14 +36,25 @@ example : ∃ x : Nat, 3 * x + 1 = 7 := by

open Lean

-- タクティクのマクロ展開を調べるためのコマンド
elab "#expand_tactic " t:tactic : command => do
/-- `#expand` の入力に渡すための構文カテゴリ -/
declare_syntax_cat macro_stx

-- コマンドとタクティクと項を扱える
syntax command : macro_stx
syntax tactic : macro_stx
syntax term : macro_stx

/-- マクロを展開するコマンド -/
elab "#expand " t:macro_stx : command => do
let t : Syntax := match t.raw with
| .node _ _ #[t] => t
| _ => t.raw
match ← Elab.liftMacroM <| Lean.Macro.expandMacro? t with
| none => logInfo m!"Not a macro"
| some t => logInfo m!"{t}"

/-- info: (refine ⟨1, 2, 3, ?_⟩; try trivial) -/
#guard_msgs in
#expand_tactic exists 1, 2, 3
#expand exists 1, 2, 3

end Exists --#
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