Added Empty() struct

4 files changed, 17 insertions, 1 deletions

diff --git a/src/stdlib/datatypes.h b/src/stdlib/datatypes.h
index fc665401..0ac97019 100644
--- a/src/stdlib/datatypes.h
+++ b/src/stdlib/datatypes.h
@@ -69,6 +69,9 @@ typedef struct table_s {
     struct table_s *fallback;
 } Table_t;
 
+typedef struct Empty$$struct {
+} Empty$$type;
+
 typedef struct {
     void *fn, *userdata;
 } Closure_t;
diff --git a/src/stdlib/structs.c b/src/stdlib/structs.c
index 885b903c..89b5581b 100644
--- a/src/stdlib/structs.c
+++ b/src/stdlib/structs.c
@@ -6,6 +6,7 @@
 #include "bools.h"
 #include "metamethods.h"
 #include "siphash.h"
+#include "structs.h"
 #include "text.h"
 #include "util.h"
 
@@ -214,3 +215,14 @@ void Struct$deserialize(FILE *in, void *outval, List_t *pointers, const TypeInfo
         }
     }
 }
+
+public
+const TypeInfo_t Empty$$info = {.size = 0,
+                                .align = 0,
+                                .tag = StructInfo,
+                                .metamethods = Struct$metamethods,
+                                .StructInfo.name = "Empty",
+                                .StructInfo.num_fields = 0};
+
+public
+const Empty$$type EMPTY = {};
diff --git a/src/stdlib/structs.h b/src/stdlib/structs.h
index a582e9fb..83904377 100644
--- a/src/stdlib/structs.h
+++ b/src/stdlib/structs.h
@@ -15,6 +15,8 @@ PUREFUNC bool PackedData$equal(const void *x, const void *y, const TypeInfo_t *t
 PUREFUNC Text_t Struct$as_text(const void *obj, bool colorize, const TypeInfo_t *type);
 void Struct$serialize(const void *obj, FILE *out, Table_t *pointers, const TypeInfo_t *type);
 void Struct$deserialize(FILE *in, void *outval, List_t *pointers, const TypeInfo_t *type);
+extern const TypeInfo_t Empty$$info;
+extern const Empty$$type EMPTY;
 
 #define Struct$metamethods                                                                                             \
     {                                                                                                                  \
diff --git a/src/stdlib/types.h b/src/stdlib/types.h
index bd2474fa..5cd622e7 100644
--- a/src/stdlib/types.h
+++ b/src/stdlib/types.h
@@ -91,7 +91,6 @@ struct TypeInfo_s {
 
 extern const TypeInfo_t Void$info;
 extern const TypeInfo_t Abort$info;
-#define Void_t void
 
 Text_t Type$as_text(const void *typeinfo, bool colorize, const TypeInfo_t *type);