Finished implentation of devices and added Opcode class

ass2/simulator/device.cpp

@@ -1,5 +1,58 @@
 #include "device.h"
+using namespace std;
 
-Device::Device() {
+bool Device::test() { return true; }
 
+unsigned char Device::read() { return 0; }
+
+void Device::write(unsigned char) {}
+
+
+InputDevice::InputDevice(istream& in) {
+    input = ∈
+}
+
+unsigned char InputDevice::read() {
+    char c;
+    if (input->get(c)) {
+        return static_cast<unsigned char>(c);
+    }
+    return 0;
+}
+
+OutputDevice::OutputDevice(ostream& out) {
+    output = &out;
+}
+
+void OutputDevice::write(unsigned char c) {
+    output->put(static_cast<char>(c));
+    output->flush();
+}
+
+FileDevice::FileDevice(string& filename) {
+    file.open(filename, ios::in | ios::out | ios::binary);
+    if (!file.is_open()) {
+        // ustvari datoteko
+        file.clear();
+        file.open(filename, ios::out | ios::binary);
+        file.close();
+        file.open(filename, ios::in | ios::out | ios::binary);
+    }
+}
+
+bool FileDevice::test() {
+    return file.is_open();
+}
+
+unsigned char FileDevice::read() {
+    char c;
+    if (file.get(c)) {
+        return static_cast<unsigned char>(c);
+    }
+    return 0;
+}
+
+void FileDevice::write(unsigned char c) {
+    file.put(static_cast<char>(c));
+    file.flush();
 }