flush

[m6w6/ext-psi] / config.psi_decl.m4

diff --git a/config.psi_decl.m4 b/config.psi_decl.m4
new file mode 100644 (file)
index 0000000..2a89205
--- /dev/null
+++ b/config.psi_decl.m4
@@ -0,0 +1,64 @@
+PSI_REDIRS=
+AC_DEFUN(PSI_REDIR, [psi_symbol=ifelse([$2],[],[$1],[$2])
+       PSI_REDIRS="{\"$1\", (void(*)(void))$psi_symbol}, $PSI_REDIRS"])
+
+dnl PSI_FUNC(fn, action-if-yes, action-if-no)
+AC_DEFUN(PSI_FUNC, [
+       AC_REQUIRE([AC_PROG_NM])
+       AC_REQUIRE([AC_PROG_AWK])
+       psi_symbol=$1
+       AC_CACHE_CHECK(for $1, psi_cv_fn_$1, [
+               psi_symbol_redirect=
+               AC_TRY_LINK(PSI_INCLUDES, [
+                       void (*fn)(void) = (void (*)(void)) $psi_symbol;
+               ], [
+                       psi_symbol_redirect=`$NM -g conftest$ac_exeext | $AWK -F" *|@" '/ U .*$1.*/ {print$[]3; exit}'`
+               ])
+               psi_cv_fn_$1=$psi_symbol_redirect
+       ])
+       case "$psi_cv_fn_$1" in
+       "")
+               $3
+               ;;
+       "$psi_symbol"|"_$psi_symbol")
+               $2
+               ;;
+       *)
+               $2
+               PSI_REDIR($1)
+               ;;
+       esac
+])
+
+AC_DEFUN(PSI_DECL_ARG, [
+    m4_define([member_name], PSI_VAR_NAME($1))
+    m4_define([member_type], PSI_TYPE_NAME($1))
+    m4_define([pointer_level], m4_len(m4_bpatsubst($1, [[^*]])))
+       m4_define([array_size], m4_bregexp($1, [\[\([0-9]+\)\]], [\1]))
+       ifelse(array_size, [],
+               [m4_define([array_size], 0)],
+               [m4_define([pointer_level], m4_incr(pointer_level))]
+       )
+    if test -n "$psi_decl_args"; then
+        psi_decl_args="$psi_decl_args, "
+    fi
+    psi_decl_args="[$psi_decl_args{]PSI_TYPE_PAIR(member_type)[, \"]member_name[\",] pointer_level, array_size[}]"
+])
+
+dnl PSI_DECL(type func, args)
+AC_DEFUN(PSI_DECL, [
+       psi_decl_args=
+       PSI_DECL_ARG($1)
+       m4_case([$2],
+               [(void)], [],
+               [()], [],
+               [m4_map_args_sep([PSI_DECL_ARG(], [)], [], m4_bregexp($2, [(\(.*\))], [\1]))])
+       PSI_FUNC(PSI_VAR_NAME($1), [
+               PSI_DECLS="{$psi_decl_args}, $PSI_DECLS"
+       ], [
+               PSI_MACRO(PSI_VAR_NAME($1), $3, [
+                       add_macro "PSI_TYPE_NAME($1)" "PSI_VAR_NAME($1)" "$3"
+                       PSI_DECLS="{$psi_decl_args}, $PSI_DECLS"
+               ])
+       ])
+])