lean4-htt

Lean 4 fork for HoTT-compatible kernel extensions (Path types, transport, HITs). Maintained against upstream leanprover/lean4.

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Leonardo de Moura 0b7d987699 feat(frontends/lean, library/init/lean): opaque constants @kha I have added support for opaque constants to the old C++ frontend, and made sure the new frontend can still parse `library/init/core.lean`. The kernel should enforce that opaque constants are really opaque, and the following example should fail ``` constant x : nat := 0 theorem foo : x = 0 := rfl ``` If it doesn't, it is a bug. Here are some remaining issues: 1- `environment.mk_empty` is currently an axiom because we cannot create an inhabitant of an opaque type. A possible solution is to use `option environment` instead of `environment`. 2- There is no support for opaque constants in the new frontend. However, I modified it to handle axioms, and fixed the literal values with decl_cmd_kind. I tried to mark some of my changes with comments, but it is probably much easier for you to just check the commit change list. 3- I did not add any support for automatically constructing `e` at `constant x : t := e`. I think we can do this later after we replace the old frontend with the new one. BTW, it took only a few minutes to provide the inhabitants manually.		2019-03-15 17:41:44 -07:00
.github	chore(.github/CONTRIBUTING): fix typos and URLs	2017-10-30 16:23:22 +01:00
bin	chore(bin/lean-gdb): add lean::object pretty printer	2019-02-07 13:02:48 +01:00
doc	chore(doc/examples/compiler/test): simplify example	2019-02-06 17:23:16 -08:00
gen	feat(runtime): avoid extra `switch`	2019-02-23 17:35:21 -08:00
images	chore(CMakeLists.txt): move Lean logo to make sure we can test leanemacs without installing Lean	2015-01-31 17:38:49 -08:00
lean4-mode	feat(frontends/lean, library/init/lean): opaque constants	2019-03-15 17:41:44 -07:00
library	feat(frontends/lean, library/init/lean): opaque constants	2019-03-15 17:41:44 -07:00
script	chore(CMakeLists): style_check: ignore src/boot/	2019-02-07 15:41:12 +01:00
src	feat(frontends/lean, library/init/lean): opaque constants	2019-03-15 17:41:44 -07:00
tests	feat(tests/playground/flat_parser): tail recursive `many` combinator	2019-03-14 16:11:51 -07:00
.appveyor.yml	chore(.appveyor,.travis): disable leanpkg registry tests	2018-04-12 18:32:20 +02:00
.clang-format	feat(library/vm/process): add basic process support	2017-03-28 18:08:06 -07:00
.codecov.yml	fix(.codecov.yml): do not fail github ci if coverage drops by 0.01%	2017-06-25 10:35:02 +02:00
.gitattributes	chore(.gitattributes): use `union` merge strategy for doc/changes.md	2017-12-11 12:49:10 +01:00
.gitignore	chore(.gitignore): ignore library/Makefile	2018-11-07 09:30:32 +01:00
.travis.yml	chore(.travis.yml): trigger AppVeyor nightly build from Travis	2018-04-13 16:44:27 +02:00
LICENSE	Add LICENSE file	2013-07-15 18:55:48 -07:00
README.md	chore(README): point CI links to lean4 branch	2018-04-12 13:50:42 +02:00