From 91aeefea53fefb38de73d0cf5a812c45d74ed778 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Hugo=20H=C3=B6rnquist?= <hugo@hornquist.se>
Date: Sat, 9 Feb 2019 12:08:53 +0100
Subject: Add iterator macros.

---
 macro.h | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

(limited to 'macro.h')

diff --git a/macro.h b/macro.h
index bf0c1864..11287b44 100644
--- a/macro.h
+++ b/macro.h
@@ -78,6 +78,21 @@
 #define FREE_F(T) int FREE(T) (T* this)
 
 
+/*
+ * Iterator macros.
+ */
+#define FOR(T, var, set) for( \
+		BEG_ ## T (var, set); \
+		END_ ## T (var, set); \
+		NXT_ ## T (var, set))
+
+/* Example int implementation
+ * FOR(int, i, 10) { } */
+
+#define BEG_int(i, set) int i = 0
+#define NXT_int(i, set) i++
+#define END_int(i, set) i < set
+
 /*
  * General functions that different container types may implement.
  * Actuall implementation and type signature is mostly left to
-- 
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