X-Git-Url: https://git.m6w6.name/?p=m6w6%2Fext-psi;a=blobdiff_plain;f=config.psi_decl.m4;fp=config.psi_decl.m4;h=2a89205c6570306a5863b1e7bfa39b018e0707ca;hp=0000000000000000000000000000000000000000;hb=3137da963d298c73ce3bc858874fdfc87fa941b7;hpb=5d54598329a4d04dd0080bc1252d1de85a7befef

diff --git a/config.psi_decl.m4 b/config.psi_decl.m4
new file mode 100644
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"
+		])
+	])
+])