From 8f717fe9f498642ca6f857ef329d73760b98d44c Mon Sep 17 00:00:00 2001
From: Bruce Hill <bruce@bruce-hill.com>
Date: Sat, 28 Sep 2024 14:17:17 -0400
Subject: [PATCH] Redefine NULL_* values as #defines so they can be constant
 initializers

---
 stdlib/optionals.c |  7 -------
 stdlib/optionals.h | 12 ++++++------
 2 files changed, 6 insertions(+), 13 deletions(-)

diff --git a/stdlib/optionals.c b/stdlib/optionals.c
index 1dc770a..717a1e0 100644
--- a/stdlib/optionals.c
+++ b/stdlib/optionals.c
@@ -11,13 +11,6 @@
 #include "text.h"
 #include "util.h"
 
-public const Array_t NULL_ARRAY = {.length=-1};
-public const OptionalBool_t NULL_BOOL = 2;
-public const Int_t NULL_INT = {.small=0};
-public const Table_t NULL_TABLE = {.entries.length=-1};
-public const Closure_t NULL_CLOSURE = {.fn=NULL};
-public const Text_t NULL_TEXT = {.length=-1};
-
 public PUREFUNC bool is_null(const void *obj, const TypeInfo *non_optional_type)
 {
     if (non_optional_type == &Int$info)
diff --git a/stdlib/optionals.h b/stdlib/optionals.h
index 34ea3b4..31fad71 100644
--- a/stdlib/optionals.h
+++ b/stdlib/optionals.h
@@ -16,12 +16,12 @@
 #define OptionalText_t Text_t
 #define OptionalClosure_t Closure_t
 
-extern const OptionalBool_t NULL_BOOL;
-extern const OptionalTable_t NULL_TABLE;
-extern const OptionalArray_t NULL_ARRAY;
-extern const OptionalInt_t NULL_INT;
-extern const OptionalClosure_t NULL_CLOSURE;
-extern const OptionalText_t NULL_TEXT;
+#define NULL_ARRAY ((Array_t){.length=-1})
+#define NULL_BOOL ((OptionalBool_t)2)
+#define NULL_INT ((OptionalInt_t){.small=0})
+#define NULL_TABLE ((OptionalTable_t){.entries.length=-1})
+#define NULL_CLOSURE ((OptionalClosure_t){.fn=NULL})
+#define NULL_TEXT ((OptionalText_t){.length=-1})
 
 PUREFUNC bool is_null(const void *obj, const TypeInfo *non_optional_type);
 Text_t Optional$as_text(const void *obj, bool colorize, const TypeInfo *type);