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

diff --git a/config.psi_macro.m4 b/config.psi_macro.m4
new file mode 100644 (file)
index 0000000..88702a9
--- /dev/null
+++ b/config.psi_macro.m4
@@ -0,0 +1,39 @@
+# arg_names(typed args)
+arg_names() {
+       AS_ECHO_N([$1]) \
+               | tr -cd '()' \
+               | $AWK -F, '{for (i=1;i<NF;++i) print $i ","; print $NF}' \
+               | $AWK '{print $NF}' \
+               | xargs
+}
+PSI_MACROS=
+# gen_macro(ret type, symbol, args)
+gen_macro() {
+       local dargs="$3"
+       test -z "$3" && dargs="()"
+       AS_ECHO_N(["static $1 psi_macro_$2$dargs {"])
+       if test "$1" != "void"; then
+               AS_ECHO_N(["return "])
+       fi
+       arg_names "$3"
+       AS_ECHO_N(["$2`arg_names \"$3\"`;}"])
+}
+# add_macro(ret type, symbol, args)
+add_macro() {
+       local psi_macro
+       psi_macro=`gen_macro "$1" "$2" "$3"`
+       PSI_MACROS="$psi_macro $PSI_MACROS"
+       PSI_REDIR([$2], [psi_macro_$2])
+}
+
+dnl PSI_MACRO(macro, decl args, action-if-true)
+AC_DEFUN(PSI_MACRO, [
+       AC_CHECK_DECL($1$2, $3, [], PSI_INCLUDES)
+])
+
+dnl PSI_EXTVAR(var, type)
+AC_DEFUN(PSI_EXTVAR, [
+       AC_CHECK_DECL($1, [
+               add_macro "$2" "$1"
+       ], [], PSI_INCLUDES)
+])