Add treesit-language-abi-version

Also rename treesit-language-version to treesit-library-abi-version,
because the old name is somewhat misleading.

* doc/lispref/parsing.texi (Language Grammar): Update.
* src/treesit.c (Ftreesit_library_abi_version): Rename.
(Ftreesit_language_abi_version): New function.

1 files changed, 27 insertions, 4 deletions

diff --git a/src/treesit.c b/src/treesit.c
index eaa563a54c4..a9bfcb3d9e9 100644
--- a/src/treesit.c
+++ b/src/treesit.c
@@ -662,9 +662,8 @@ If DETAIL is non-nil, return (t . nil) when LANGUAGE is available,
     }
 }
 
-DEFUN ("treesit-language-version",
-       Ftreesit_language_version,
-       Streesit_language_version,
+DEFUN ("treesit-library-abi-version", Ftreesit_library_abi_version,
+       Streesit_library_abi_version,
        0, 1, 0,
        doc: /* Return the language ABI version of the tree-sitter library.
 
@@ -680,6 +679,29 @@ is non-nil, return the oldest compatible ABI version.  */)
     return make_fixnum (TREE_SITTER_MIN_COMPATIBLE_LANGUAGE_VERSION);
 }
 
+DEFUN ("treesit-language-version", Ftreesit_language_abi_version,
+       Streesit_language_abi_version,
+       0, 1, 0,
+       doc: /* Return the language ABI version of the tree-sitter LANGUAGE.
+Return nil if LANGUAGE is not available.  */)
+  (Lisp_Object language)
+{
+  if (NILP (Ftreesit_langauge_available_p (language, Qnil)))
+    return Qnil;
+  else
+    {
+      Lisp_Object signal_symbol = Qnil;
+      Lisp_Object signal_data = Qnil;
+      TSLanguage *ts_language = treesit_load_language (language,
+						       &signal_symbol,
+						       &signal_data);
+      if (ts_language == NULL)
+	return Qnil;
+      uint32_t version =  ts_language_version (ts_language);
+      return make_fixnum((ptrdiff_t) version);
+    }
+}
+
 /*** Parsing functions */
 
 static void
@@ -3345,7 +3367,8 @@ then in the system default locations for dynamic libraries, in that order.  */);
   Vtreesit_extra_load_path = Qnil;
 
   defsubr (&Streesit_language_available_p);
-  defsubr (&Streesit_language_version);
+  defsubr (&Streesit_library_abi_version);
+  defsubr (&Streesit_language_abi_version);
 
   defsubr (&Streesit_parser_p);
   defsubr (&Streesit_node_p);