Switch to using a queue for character devices

05/src/main.zig

@@ -14,19 +14,20 @@ pub fn main() anyerror!void {
     var m1 = try intcode.Machine.init(alloc, p1);
     var m2 = try intcode.Machine.init(alloc, p2);
 
-    std.debug.warn("Part 1\n");
-    try m1.input.append(1); // Air conditioner unit
+    try m1.writeToInput(1); // Air conditioner unit
     try m1.run();
 
-    for (m1.output.toSlice()) |value, idx| {
-        std.debug.warn("Test {}: {}\n", idx, value);
+    var out: i32 = 0;
+    while (m1.readFromOutput(false)) |item| {
+        out = item;
+    } else |err| {
+        std.debug.assert(err == std.os.ReadError.WouldBlock);
     }
 
-    std.debug.warn("\nPart 2\n");
-    try m2.input.append(5); // Thermal radiator controller
+    std.debug.warn("Day 5, Part 1: {}\n", out);
+
+    try m2.writeToInput(5); // Thermal radiator controller
     try m2.run();
 
-    for (m2.output.toSlice()) |value, idx| {
-        std.debug.warn("Test {}: {}\n", idx, value);
-    }
+    std.debug.warn("Day 5, Part 2: {}\n", try m2.readFromOutput(false));
 }