32 lines
1.4 KiB
Text
32 lines
1.4 KiB
Text
-- Copyright (c) 2014 Microsoft Corporation. All rights reserved.
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-- Released under Apache 2.0 license as described in the file LICENSE.
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-- Author: Leonardo de Moura
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import logic
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-- This is just a trick to embed the 'tactic language' as a
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-- Lean expression. We should view 'tactic' as automation
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-- that when execute produces a term.
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-- tactic_value is just a "dummy" for creating the "fake"
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-- definitions
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inductive tactic : Type :=
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| tactic_value : tactic
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-- Remark the following names are not arbitrary, the tactic module
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-- uses them when converting Lean expressions into actual tactic objects.
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-- The bultin 'by' construct triggers the process of converting a
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-- a term of type 'tactic' into a tactic that sythesizes a term
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definition then_tac (t1 t2 : tactic) : tactic := tactic_value
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definition orelse_tac (t1 t2 : tactic) : tactic := tactic_value
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definition repeat_tac (t : tactic) : tactic := tactic_value
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definition now_tac : tactic := tactic_value
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definition exact_tac : tactic := tactic_value
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definition state_tac : tactic := tactic_value
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definition fail_tac : tactic := tactic_value
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definition id_tac : tactic := tactic_value
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definition beta_tac : tactic := tactic_value
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definition apply {B : Type} (b : B) : tactic := tactic_value
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definition unfold_tac {B : Type} (b : B) : tactic := tactic_value
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infixl `;`:200 := then_tac
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infixl `|`:100 := orelse_tac
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notation `!`:max t:max := repeat_tac t
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