diff options
Diffstat (limited to 'src/Util/Tactics')
| -rw-r--r-- | src/Util/Tactics/ConstrFail.v | 9 | ||||
| -rw-r--r-- | src/Util/Tactics/DebugPrint.v | 4 |
2 files changed, 12 insertions, 1 deletions
diff --git a/src/Util/Tactics/ConstrFail.v b/src/Util/Tactics/ConstrFail.v new file mode 100644 index 000000000..fe8a05630 --- /dev/null +++ b/src/Util/Tactics/ConstrFail.v @@ -0,0 +1,9 @@ +(** A tactic that executes immediately (during expression evaluation / constr-construction) and fails. Ideally we can eventually give it a nicer error message. COQBUG(3913) *) + +Ltac constr_fail := + let __ := match goal with _ => fail 1 "Constr construction failed. Please look at the message log (*coq*, or run your tactic again inside Fail or try) to see more details" end in + (). + +Ltac constr_fail_with msg_tac := + let __ := match goal with _ => msg_tac () end in + constr_fail. diff --git a/src/Util/Tactics/DebugPrint.v b/src/Util/Tactics/DebugPrint.v index 3ced23331..97edd0ad9 100644 --- a/src/Util/Tactics/DebugPrint.v +++ b/src/Util/Tactics/DebugPrint.v @@ -1,3 +1,5 @@ +Require Import Crypto.Util.Tactics.ConstrFail. + Ltac debuglevel := constr:(0%nat). Ltac solve_debugfail tac := @@ -36,7 +38,7 @@ Ltac constr_run_tac_fail tac := let dummy := match goal with | _ => tac () end in - constr:(I : I). + constr_fail. Ltac cidtac msg := constr_run_tac ltac:(fun _ => idtac msg). |