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use coq.coercion.class as the type of coercion classes #909

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use coq.coercion.class as the type of coercion classes #909

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use coq.coercion.class as the type of coercion classes
gares Oct 17, 2025
4b52ecd
changelog
gares Oct 17, 2025
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5 changes: 5 additions & 0 deletions Changelog.md
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Original file line number Diff line number Diff line change
@@ -1,3 +1,8 @@
# Unreleased

- HOAS:
- rename `class` to `coq.coercion.class`

# [3.2.0] 19/09/2025

Requires Elpi 3.0.0 and Coq 8.20 or Rocq 9.0 or Rocq 9.1.
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14 changes: 8 additions & 6 deletions builtin-doc/coq-builtin.elpi
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Expand Up @@ -1243,14 +1243,15 @@ external func coq.TC.get-inst-prio gref, gref -> int.
external func coq.TC.class? gref.

% Node of the coercion graph
kind class type.
external symbol funclass : class = "1".
external symbol sortclass : class = "1".
external symbol grefclass : gref -> class = "1".
kind coq.coercion.class type.
external symbol funclass : coq.coercion.class = "1".
external symbol sortclass : coq.coercion.class = "1".
external symbol grefclass : gref -> coq.coercion.class = "1".

% Edge of the coercion graph
kind coercion type.
external symbol coercion : gref -> int -> gref -> class -> coercion = "2". % ref, nparams, src, tgt
external symbol coercion : gref -> int -> gref -> coq.coercion.class ->
coercion = "2". % ref, nparams, src, tgt

% [coq.coercion.declare C] Declares C = (coercion GR NParams From To) as a
% coercion From >-> To.
Expand All @@ -1266,7 +1267,8 @@ external func coq.coercion.declare coercion.
external func coq.coercion.db -> list coercion.

% [coq.coercion.db-for From To L] L is a path From -> To
external func coq.coercion.db-for class, class -> list (pair gref int).
external func coq.coercion.db-for coq.coercion.class,
coq.coercion.class -> list (pair gref int).

% Deprecated, use coq.env.projections
pred coq.CS.canonical-projections i:inductive, o:list (option constant).
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