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| author | Son HO | 2023-07-31 16:15:58 +0200 |
|---|---|---|
| committer | GitHub | 2023-07-31 16:15:58 +0200 |
| commit | 887d0ef1efc8912c6273b5ebcf979384e9d7fa97 (patch) | |
| tree | 92d6021eb549f7cc25501856edd58859786b7e90 /backends/hol4 | |
| parent | 53adf30fe440eb8b6f58ba89f4a4c0acc7877498 (diff) | |
| parent | 9b3a58e423333fc9a4a5a264c3beb0a3d951e86b (diff) | |
Merge pull request #31 from AeneasVerif/son_lean_backend
Improve the Lean backend
Diffstat (limited to 'backends/hol4')
| -rw-r--r-- | backends/hol4/ilistScript.sml | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/backends/hol4/ilistScript.sml b/backends/hol4/ilistScript.sml index fb0c7688..2b465af3 100644 --- a/backends/hol4/ilistScript.sml +++ b/backends/hol4/ilistScript.sml @@ -23,6 +23,8 @@ val _ = BasicProvers.export_rewrites ["len_def"] Remark: we initially added the following case, so that we wouldn't need the premise [i < len ls] is [index_eq_EL]: “index (i : int) [] = EL (Num i) []” + + TODO: this can be simplified. See the Lean backend. *) val index_def = Define ‘ index (i : int) (x :: ls) = if i = 0 then x else (if 0 < i then index (i - 1) ls else ARB) @@ -44,6 +46,7 @@ Proof exfalso >> cooper_tac QED +(* TODO: this can be simplified. See the Lean backend. *) val update_def = Define ‘ update ([] : 'a list) (i : int) (y : 'a) : 'a list = [] ∧ |