e3420c08f1
This PR adds configuration options for `decide`/`decide!`/`native_decide` and refactors the tactics to be frontends to the same backend. Adds a `+revert` option that cleans up the local context and reverts all local variables the goal depends on, along with indirect propositional hypotheses. Makes `native_decide` fail at elaboration time on failure without sacrificing performance (the decision procedure is still evaluated just once). Now `native_decide` supports universe polymorphism. Closes #2072
3 lines
142 B
Text
3 lines
142 B
Text
1825.lean:2:71-2:84: error: tactic 'native_decide' evaluated that the proposition
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-2147483648 + 2147483648 = -18446744069414584320
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is false
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