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2019-06-04coqpp: add new ![] specifiers for structured proof interactionGaëtan Gilbert
![proof_stack] is equivalent to the old meaning of ![proof]: the body has type `pstate:Proof_global.t option -> Proof_global.t option` The other specifiers are for the following body types: ~~~ ![open_proof] `is_ontop:bool -> pstate` ![maybe_open_proof] `is_ontop:bool -> pstate option` ![proof] `pstate:pstate -> pstate` ![proof_opt_query] `pstate:pstate option -> unit` ![proof_query] `pstate:pstate -> unit` ~~~ The `is_ontop` is only used for the warning message when declaring a section variable inside a proof, we could also just stop warning. The specifiers look closely related to stm classifiers, but currently they're unconnected. Notably this means that a ![proof_query] doesn't have to be classified QUERY. ![proof_stack] is only used by g_rewrite/rewrite whose behaviour I don't fully understand, maybe we can drop it in the future. For compat we may want to consider keeping ![proof] with its old meaning and using some new name for the new meaning. OTOH fixing plugins to be stricter is easier if we change it as the errors tell us where it's used.
2019-06-04Proof_global: pass only 1 pstate when we don't want the proof stackGaëtan Gilbert
Typically instead of [start_proof : ontop:Proof_global.t option -> bla -> Proof_global.t] we have [start_proof : bla -> Proof_global.pstate] and the pstate is pushed on the stack by a caller around the vernacentries/mlg level. Naming can be a bit awkward, hopefully it can be improved (maybe in a followup PR). We can see some patterns appear waiting for nicer combinators, eg in mlg we often only want to work with the current proof, not the stack. Behaviour should be similar modulo bugs, let's see what CI says.
2019-06-03Update tutorial plugin to use sigma, in keeping with doc recommendationsTalia Ringer
2019-03-27[plugin tutorial] Adapt to removal of imperative state.Emilio Jesus Gallego Arias
2019-01-08Add 'doc/plugin_tutorial/' from commit ↵Gaëtan Gilbert
'168a13dab1c9987f592994150997e692d4d7e40b' git-subtree-dir: doc/plugin_tutorial git-subtree-mainline: 8c040974facb733682d24c488dc89941671f4ab7 git-subtree-split: 168a13dab1c9987f592994150997e692d4d7e40b