lean2/tests/lean/run/tactic3.lean

import standard
using tactic

theorem tst {A B : Bool} (H1 : A) (H2 : B) : A
:= by [trace "first";  state; now  |
       trace "second"; state; fail |
       trace "third";  assumption]

check tst
refactor(library/tactic): add namespace 'tactic', improve expr_to_tactic failure error message Signed-off-by: Leonardo de Moura <leonardo@microsoft.com> 2014-07-02 17:35:43 +00:00			`import standard`
feat(frontends/lean): remove build_tactic_cmds, and use expressions for representing tactics Signed-off-by: Leonardo de Moura <leonardo@microsoft.com> 2014-07-02 03:43:53 +00:00			`using tactic`
feat(frontends/lean): add notation for orelse tactic, add show and now tactics Signed-off-by: Leonardo de Moura <leonardo@microsoft.com> 2014-06-29 18:39:05 +00:00
			`theorem tst {A B : Bool} (H1 : A) (H2 : B) : A`
fix(library/standard): orelse notation, avoid conflict with inductive datatype declaration Signed-off-by: Leonardo de Moura <leonardo@microsoft.com> 2014-07-04 17:10:05 +00:00			`:= by [trace "first"; state; now \|`
			`trace "second"; state; fail \|`
			`trace "third"; assumption]`
feat(frontends/lean): remove build_tactic_cmds, and use expressions for representing tactics Signed-off-by: Leonardo de Moura <leonardo@microsoft.com> 2014-07-02 03:43:53 +00:00
			`check tst`