# HG changeset patch
# User František Kučera <franta-hg@frantovo.cz>
# Date 1513889355 -3600
# Node ID d4b2ec9ef8bcc32d9f4c47023aae1887fa95b895
# Parent  379c490a9831cde2ff53e382dc25b09abbc4d89f
template / generic read() function

diff -r 379c490a9831 -r d4b2ec9ef8bc c++/rgb-assembler/rgb-assembler.cpp
--- a/c++/rgb-assembler/rgb-assembler.cpp	Thu Dec 21 18:13:35 2017 +0100
+++ b/c++/rgb-assembler/rgb-assembler.cpp	Thu Dec 21 21:49:15 2017 +0100
@@ -20,24 +20,12 @@
 const command_t CMD_END = 0xED;
 
 /**
- * Reads the command on given position in memory and increments the index (position).
+ * Reads data on given position in memory and increments the index (position).
  */
-command_t readCommand(command_t * memory, address_t &index) {
-	// TODO: map higher memory to static hardcoded areas or peripherals
-	command_t * value = reinterpret_cast<command_t*> (memory + index);
-	index += sizeof (*value) / sizeof (command_t);
-	return *value;
-}
-
-address_t readAddress(command_t * memory, address_t &index) {
-	address_t * value = reinterpret_cast<address_t*> (memory + index);
-	index += sizeof (*value) / sizeof (command_t);
-	return *value;
-}
-
-sleep_t readSleep(command_t * memory, address_t &index) {
-	// TODO: map higher memory to static hardcoded areas or peripherals
-	sleep_t * value = reinterpret_cast<sleep_t*> (memory + index);
+template<typename T> T read(command_t * memory, address_t &index) {
+	// TODO: for addresses: map higher memory to static hardcoded areas or peripherals
+	// TODO: sizeof (command_t) != 1 ?
+	T * value = reinterpret_cast<T*> (memory + index);
 	index += sizeof (*value) / sizeof (command_t);
 	return *value;
 }
@@ -90,19 +78,19 @@
 
 	for (address_t i = 0; i < MEMORY_SIZE;) {
 		wprintf(L"command %d = ", i);
-		command_t ch = readCommand(memory, i);
+		command_t ch = read<command_t>(memory, i);
 		wprintf(L"%X\n", ch);
 
 		string command;
 
 		switch (ch) {
 			case CMD_GOTO:
-				i = readAddress(memory, i);
+				i = read<address_t>(memory, i);
 				command.append("GOTO ");
 				break;
 			case CMD_SLEEP:
 				command.append("SLEEP");
-				this_thread::sleep_for(chrono::milliseconds(readSleep(memory, i)));
+				this_thread::sleep_for(chrono::milliseconds(read<sleep_t>(memory, i)));
 				break;
 			case CMD_END:
 				command.append("END");