# HG changeset patch
# User František Kučera <franta-hg@frantovo.cz>
# Date 1513889726 -3600
# Node ID 157bc062efa7fac5216a921de0731a03338b5286
# Parent  d4b2ec9ef8bcc32d9f4c47023aae1887fa95b895
template / generic write() function

diff -r d4b2ec9ef8bc -r 157bc062efa7 c++/rgb-assembler/rgb-assembler.cpp
--- a/c++/rgb-assembler/rgb-assembler.cpp	Thu Dec 21 21:49:15 2017 +0100
+++ b/c++/rgb-assembler/rgb-assembler.cpp	Thu Dec 21 21:55:26 2017 +0100
@@ -30,23 +30,13 @@
 	return *value;
 }
 
-void writeCommand(command_t * memory, address_t &index, const command_t value) {
-	// command_t * m = (command_t*) (memory + index);
-	command_t * m = reinterpret_cast<command_t*> (memory + index);
-	*m = value;
-	index += sizeof (value) / sizeof (command_t);
-}
-
-void writeAddress(command_t * memory, address_t &index, const address_t value) {
-	// command_t * m = (command_t*) (memory + index);
-	address_t * m = reinterpret_cast<address_t*> (memory + index);
-	*m = value;
-	index += sizeof (value) / sizeof (command_t);
-}
-
-void writeSleep(command_t * memory, address_t &index, const sleep_t value) {
-	// command_t * m = (command_t*) (memory + index);
-	sleep_t * m = reinterpret_cast<sleep_t*> (memory + index);
+/**
+ * Writes data to given position in memory and increments the index (position).
+ */
+template<typename T> void write(command_t * memory, address_t &index, const T value) {
+	// TODO: sizeof (command_t) != 1 ?
+	// T * m = (T*) (memory + index);
+	T * m = reinterpret_cast<T*> (memory + index);
 	*m = value;
 	index += sizeof (value) / sizeof (command_t);
 }
@@ -59,23 +49,21 @@
 
 	{
 		address_t a = 0;
-		writeCommand(memory, a, CMD_SLEEP);
-		writeSleep(memory, a, 255);
-		writeCommand(memory, a, CMD_SLEEP);
-		writeSleep(memory, a, 10);
-		writeCommand(memory, a, CMD_SLEEP);
-		writeSleep(memory, a, 255);
-		writeCommand(memory, a, CMD_GOTO);
-		writeAddress(memory, a, a + 4);
-		writeCommand(memory, a, 1);
-		writeCommand(memory, a, 1);
-		writeCommand(memory, a, CMD_SLEEP);
-		writeSleep(memory, a, 255);
-		writeCommand(memory, a, CMD_END);
+		write<command_t>(memory, a, CMD_SLEEP);
+		write<sleep_t>(memory, a, 255);
+		write<command_t>(memory, a, CMD_SLEEP);
+		write<sleep_t>(memory, a, 10);
+		write<command_t>(memory, a, CMD_SLEEP);
+		write<sleep_t>(memory, a, 255);
+		write<command_t>(memory, a, CMD_GOTO);
+		write<address_t>(memory, a, a + 4);
+		write<command_t>(memory, a, 1);
+		write<command_t>(memory, a, 1);
+		write<command_t>(memory, a, CMD_SLEEP);
+		write<sleep_t>(memory, a, 255);
+		write<command_t>(memory, a, CMD_END);
 	}
 
-
-
 	for (address_t i = 0; i < MEMORY_SIZE;) {
 		wprintf(L"command %d = ", i);
 		command_t ch = read<command_t>(memory, i);
@@ -104,8 +92,6 @@
 		}
 	}
 
-
-
 	free(memory);
 	memory = nullptr;
 	wprintf(L"all done\n");