From: Nick Mathewson <nickm@torproject.org>
Date: Sat, 26 Jan 2008 22:49:36 +0000 (+0000)
Subject: New macros to simplify writing loops over map key-value pairs.
X-Git-Tag: tor-0.2.0.19-alpha~79
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c7fe633780bffe69d07a1655c6ecbe3c631d5483;p=thirdparty%2Ftor.git

New macros to simplify writing loops over map key-value pairs.

svn:r13302
---

diff --git a/src/common/container.h b/src/common/container.h
index f8660c74d9..3b5d72b1c2 100644
--- a/src/common/container.h
+++ b/src/common/container.h
@@ -208,6 +208,24 @@ DECLARE_MAP_FNS(digestmap_t, const char *, digestmap_);
 
 #undef DECLARE_MAP_FNS
 
+#define MAP_FOREACH(prefix, map, keytype, keyvar, valtype, valvar)      \
+  STMT_BEGIN                                                            \
+    prefix##iter_t *key##_iter;                                         \
+    for (key##_iter = prefix##iter_init(map);                           \
+         !prefix##iter_done(key##_iter);                                \
+         key##_iter = prefix##iter_next(map, key##_iter)) {             \
+      keytype keyvar;                                                   \
+      void *valvar##_voidp;                                             \
+      valtype valvar;                                                   \
+      prefix##iter_get(key##_iter, &keyvar, &valvar##_voidp);           \
+      valvar = valvar##_voidp;
+
+#define MAP_FOREACH_END } STMT_END ;
+
+#define DIGESTMAP_FOREACH(map, keyvar, valtype, valvar)                 \
+  MAP_FOREACH(digestmap_, map, const char *, keyvar, valtype, valvar)
+#define DIGESTMAP_FOREACH_END MAP_FOREACH_END
+
 void* strmap_set_lc(strmap_t *map, const char *key, void *val);
 void* strmap_get_lc(const strmap_t *map, const char *key);
 void* strmap_remove_lc(strmap_t *map, const char *key);