From 70f9b246698f846beac7e639c47e16e4bb23c3d6 Mon Sep 17 00:00:00 2001
From: Richard Thier <magosit@outlook.hu>
Date: Thu, 10 Oct 2024 17:16:41 +0200
Subject: [PATCH] added mapmap.hpp so maybe future benchmarks can be done

---
 main.cpp   |  6 +++++-
 mapmap.hpp | 39 +++++++++++++++++++++++++++++++++++++++
 2 files changed, 44 insertions(+), 1 deletion(-)
 create mode 100644 mapmap.hpp

diff --git a/main.cpp b/main.cpp
index ca6a6be..20aac2c 100644
--- a/main.cpp
+++ b/main.cpp
@@ -2,6 +2,7 @@
 #include <cassert>
 #include "amap.h"
 #include "simap.h"
+#include "mapmap.hpp"
 
 void test_basics(amap mapdo, void *map) {
 	assert(NULL == mapdo(map, AMAP_GET, "asdf", NULL));
@@ -30,7 +31,7 @@ void test_basics(amap mapdo, void *map) {
 	assert(NULL != mapdo(map, AMAP_SET, "meaningless1", &i));
 	assert(NULL != mapdo(map, AMAP_SET, "meaning2", &i));
 	const char *helloworld = "Hello world!";
-	assert(NULL != mapdo(map, AMAP_SET, "hello", (char *)helloworld)); /* TODO: ugly cast... */
+	assert(NULL != mapdo(map, AMAP_SET, "hello", (char *)helloworld)); /* ugly cast... */
 
 	assert(NULL != (chptr = (const char *)mapdo(map, AMAP_GET, "hello", NULL)));
 	assert(strlen(chptr) == strlen(helloworld));
@@ -48,5 +49,8 @@ int main() {
 	simap_instance si = simap_create();
 	test_basics(simap, &si);
 
+	mapmap_instance mi = mapmap_create();
+	test_basics(mapmap, &mi);
+
 	return 0;
 }
diff --git a/mapmap.hpp b/mapmap.hpp
new file mode 100644
index 0000000..7afbb40
--- /dev/null
+++ b/mapmap.hpp
@@ -0,0 +1,39 @@
+#ifndef MAPMAP_HPP
+#define MAPMAP_HPP
+
+#include <map>
+#include <cassert>
+#include <memory>
+
+struct mapmap_instance {
+	std::map<const char *, void *> m;
+};
+
+static inline mapmap_instance mapmap_create() {
+	mapmap_instance ret;
+	return ret;
+}
+
+static inline void* mapmap(void *amap_instance, AMAP_OP op, const char *key, void *ptr) {
+	mapmap_instance *map = (mapmap_instance *) amap_instance;
+	if(op == AMAP_GET) {
+		try {
+			return map->m[key];
+		} catch(...) {
+			return ptr;
+		}
+	} else if(op == AMAP_SET) {
+		try {
+			map->m[key] = ptr;
+			return map; // non-null
+		} catch(...) {
+			return NULL;
+		}
+	} else { // if(op == AMAP_ERASE) {
+		assert(op == AMAP_ERASE);
+		map->m = std::move(std::map<const char *, void *>());
+		return (void *)((uint8_t)(NULL) - 1L);
+	}
+}
+
+#endif // MAPMAP_HPP