pkg 7acb6c5ca1 68/76: Intrdduce pkg_find_symbol

[Gerd Moellmann]

branch: pkg
commit 7acb6c5ca1c629846bb413c8ab0605a045bb3752
Author: Gerd Möllmann <gerd@gnu.org>
Commit: Gerd Möllmann <gerd@gnu.org>

    Intrdduce pkg_find_symbol
---
 src/lisp.h  |  1 +
 src/pkg.c   | 39 ++++++++++++++++++++-------------------
 src/print.c | 12 ++++++------
 3 files changed, 27 insertions(+), 25 deletions(-)

diff --git a/src/lisp.h b/src/lisp.h
index 5417881a0a..461333f01b 100644
--- a/src/lisp.h
+++ b/src/lisp.h
@@ -2280,6 +2280,7 @@ extern void pkg_break (void);
 extern void pkg_define_builtin_symbols (void);
 extern void pkg_map_symbols_c_fn (void (*fn) (Lisp_Object, Lisp_Object), 
Lisp_Object arg);
 extern Lisp_Object pkg_find_package (Lisp_Object name);
+extern Lisp_Object pkg_find_symbol (Lisp_Object name, Lisp_Object package, 
Lisp_Object *status);
 
 
 /* Return whether a value might be a valid docstring.
diff --git a/src/pkg.c b/src/pkg.c
index ace28ea1ae..e62d6ae323 100644
--- a/src/pkg.c
+++ b/src/pkg.c
@@ -209,7 +209,7 @@ package_or_default (Lisp_Object designator)
    recursion.  */
 
 static Lisp_Object
-lookup_symbol1 (Lisp_Object name, Lisp_Object package, Lisp_Object seen,
+pkg_find_symbol1 (Lisp_Object name, Lisp_Object package, Lisp_Object seen,
                Lisp_Object *status)
 {
   eassert (STRINGP (name));
@@ -240,7 +240,7 @@ lookup_symbol1 (Lisp_Object name, Lisp_Object package, 
Lisp_Object seen,
          if (NILP (Fmemq (used_package, seen)))
            {
              seen = Fcons (used_package, seen);
-             symbol = lookup_symbol1 (name, used_package, seen, NULL);
+             symbol = pkg_find_symbol1 (name, used_package, seen, NULL);
              if (!EQ (symbol, Qunbound))
                return symbol;
            }
@@ -250,10 +250,10 @@ lookup_symbol1 (Lisp_Object name, Lisp_Object package, 
Lisp_Object seen,
   return symbol;
 }
 
-static Lisp_Object
-lookup_symbol (Lisp_Object name, Lisp_Object package, Lisp_Object *status)
+Lisp_Object
+pkg_find_symbol (Lisp_Object name, Lisp_Object package, Lisp_Object *status)
 {
-  return lookup_symbol1 (name, package, Qnil, status);
+  return pkg_find_symbol1 (name, package, Qnil, status);
 }
 
 /* Add a SYMBOL to package PACKAGE.  Value is SYMBOL.  The symbol
@@ -303,7 +303,7 @@ pkg_intern_symbol1 (const Lisp_Object name, Lisp_Object 
package,
   eassert (PACKAGEP (package));
 
   /* If already accessible in package, return that.  */
-  Lisp_Object symbol = lookup_symbol (name, package, status);
+  Lisp_Object symbol = pkg_find_symbol (name, package, status);
   if (!EQ (symbol, Qunbound))
     return symbol;
 
@@ -376,7 +376,7 @@ pkg_lookup_non_keyword_c_string (const char *ptr, ptrdiff_t 
nchars, ptrdiff_t nb
 {
   eassert (*ptr != ':');
   const Lisp_Object name = make_string_from_bytes (ptr, nchars, nbytes);
-  return lookup_symbol (name, Vearmuffs_package, NULL);
+  return pkg_find_symbol (name, Vearmuffs_package, NULL);
 }
 
 static Lisp_Object
@@ -386,7 +386,7 @@ pkg_unintern_symbol (Lisp_Object symbol, Lisp_Object 
package)
   package = package_or_default (package);
 
   Lisp_Object status;
-  Lisp_Object found = lookup_symbol (SYMBOL_NAME (symbol), package, &status);
+  Lisp_Object found = pkg_find_symbol (SYMBOL_NAME (symbol), package, &status);
   Lisp_Object removedp = Qnil;
 
   if (!EQ (found, Qunbound) && !EQ (status, QCinherited))
@@ -514,7 +514,7 @@ pkg_emacs_intern_soft (Lisp_Object name, Lisp_Object 
package)
     package = fake_me_an_obarray (package);
   package = package_or_default (package);
 
-  Lisp_Object found = lookup_symbol (name, package, NULL);
+  Lisp_Object found = pkg_find_symbol (name, package, NULL);
   if (EQ (found, Qunbound))
     return Qnil;
 
@@ -563,7 +563,8 @@ pkg_qualified_symbol (Lisp_Object name, Lisp_Object 
package, bool external)
 {
   /* If we want a symbol for a given package, check the
      package has that symbol and its accessibily.  */
-  Lisp_Object found = Ffind_symbol (name, package);
+  Lisp_Object status;
+  Lisp_Object found = pkg_find_symbol (name, package, &status);
 
   if (EQ (package, Vkeyword_package))
     {
@@ -571,23 +572,22 @@ pkg_qualified_symbol (Lisp_Object name, Lisp_Object 
package, bool external)
         PKG-FIXME: there might already be a symbol named
         'test' in the obarray, and we'd like to use that
         name for ':test'.  That's a problem.  */
-      if (NILP (found))
+      if (EQ (found, Qunbound))
        return pkg_intern_symbol (name, package, NULL);
-      return XCAR (found);
+      return found;
     }
 
-  if (NILP (found))
+  if (EQ (found, Qunbound))
     pkg_error ("Symbol '%s' is not accessible in package '%s'",
               SDATA (name), SDATA (XPACKAGE (package)->name));
 
   /* Check if the symbol is accesible in the package as external
      symbol.  PKG-FIXME: Check what to do for inherited symbols.  */
-  const Lisp_Object status = XCAR (XCDR (found));
   if (external && EQ (status, QCinternal))
     pkg_error ("Symbol '%s' is internal in package '%s'",
               SDATA (name), SDATA (XPACKAGE (package)->name));
 
-  return XCAR (found);
+  return found;
 }
 
 /* Return symbol with name NAME when accessed without qualification in
@@ -603,9 +603,10 @@ pkg_unqualified_symbol (Lisp_Object name)
 
   /* If we want a symbol for a given package, check the
      package has that symboland its accessibily.  */
-  const Lisp_Object found = Ffind_symbol (name, package);
-  if (!NILP (found))
-    return XCAR (found);
+  Lisp_Object status;
+  const Lisp_Object found = pkg_find_symbol (name, package, &status);
+  if (!EQ (found, Qunbound))
+    return found;
   return pkg_intern_symbol (name, package, NULL);
 }
 
@@ -657,7 +658,7 @@ symbol that was found, and STATUS is one of the following:
   CHECK_STRING (name);
   package = package_or_default (package);
   Lisp_Object status;
-  const Lisp_Object symbol = lookup_symbol (name, package, &status);
+  const Lisp_Object symbol = pkg_find_symbol (name, package, &status);
   if (EQ (symbol, Qunbound))
     return Qnil;
   return list2 (symbol, status);
diff --git a/src/print.c b/src/print.c
index fed549099a..e76bd44a82 100644
--- a/src/print.c
+++ b/src/print.c
@@ -2235,15 +2235,15 @@ print_symbol (Lisp_Object symbol, Lisp_Object 
printcharfun,
   else
     {
       /* If the symbol is accessible, it need not be qualified.  */
-      const Lisp_Object found = Ffind_symbol (name, Vearmuffs_package);
-      const bool accessible = !NILP (found);
-      if (!accessible || !EQ (XCAR (found), symbol))
+      Lisp_Object status;
+      const Lisp_Object found = pkg_find_symbol (name, Vearmuffs_package, 
&status);
+      const bool accessible = !EQ (found, Qunbound);
+      if (!accessible || !EQ (found, symbol))
        {
          print_symbol_name (XPACKAGE (package)->name,
                             printcharfun, escape);
-         const Lisp_Object found = Ffind_symbol (name, package);
-         eassert (!NILP (found));
-         const Lisp_Object status = XCAR (XCDR (found));
+         const Lisp_Object found = pkg_find_symbol (name, package, &status);
+         eassert (!EQ (found, Qunbound));
          if (EQ (status, QCexternal))
            print_c_string (":", printcharfun);
          else