Implement new file device interface

This is a complete redesign of the file device. The most notable
addition is the ability to ascend and descend the file tree.

1 files changed, 32 insertions, 32 deletions

diff --git a/src/devices.rs b/src/devices.rs
index 5b274c9..e1a00f7 100644
--- a/src/devices.rs
+++ b/src/devices.rs
@@ -182,22 +182,22 @@ impl DeviceBus for StandardDevices {
             // Stream
 
             // File
-            0xA0 => read_b!(self.file.file.is_some()),
-            0xA1 => read_b!(self.file.operation_state),
-            0xA2 => no_read!(),
-            0xA3 => no_read!(),
-            0xA4 => read_hh!(self.file.pointer),
-            0xA5 => read_hl!(self.file.pointer),
-            0xA6 => read_lh!(self.file.pointer),
-            0xA7 => read_ll!(self.file.pointer),
-            0xA8 => self.file.read(),
-            0xA9 => self.file.read(),
-            0xAA => no_read!(),
-            0xAB => no_read!(),
-            0xAC => read_hh!(self.file.file_size),
-            0xAD => read_hl!(self.file.file_size),
-            0xAE => read_lh!(self.file.file_size),
-            0xAF => read_ll!(self.file.file_size),
+            0xA0 => read_b!(self.file.entry.is_some()),
+            0xA1 => read_b!(self.file.move_success),
+            0xA2 => self.file.name_buffer.read_byte(),
+            0xA3 => read_b!(self.file.entry_type()),
+            0xA4 => self.file.read_byte(),
+            0xA5 => self.file.read_byte(),
+            0xA6 => self.file.read_child_name(),
+            0xA7 => read_b!(self.file.child_type()),
+            0xA8 => read_hh!(self.file.pointer()),
+            0xA9 => read_hl!(self.file.pointer()),
+            0xAA => read_lh!(self.file.pointer()),
+            0xAB => read_ll!(self.file.pointer()),
+            0xAC => read_hh!(self.file.length()),
+            0xAD => read_hl!(self.file.length()),
+            0xAE => read_lh!(self.file.length()),
+            0xAF => read_ll!(self.file.length()),
 
             _ => unimplemented!("Reading from device port 0x{port:02x}"),
         }
@@ -310,22 +310,22 @@ impl DeviceBus for StandardDevices {
             0x8E => no_write!(),
             0x8F => no_write!(),
             // File
-            0xA0 => self.file.push_name_byte(val),
-            0xA1 => no_write!(),
-            0xA2 => no_write!(),
-            0xA3 => no_write!(),
-            0xA4 => write_hh!(self.file.pointer),
-            0xA5 => write_hl!(self.file.pointer),
-            0xA6 => write_lh!(self.file.pointer),
-            0xA7 => write_ll!(self.file.pointer),
-            0xA8 => no_write!(),
-            0xA9 => no_write!(),
-            0xAA => no_write!(),
-            0xAB => no_write!(),
-            0xAC =>   write_hh!(self.file.file_size),
-            0xAD =>   write_hl!(self.file.file_size),
-            0xAE =>   write_lh!(self.file.file_size),
-            0xAF => { write_ll!(self.file.file_size); self.file.set_file_size() },
+            0xA0 => self.file.write_to_open_port(val),
+            0xA1 => self.file.write_to_move_port(val),
+            0xA2 => self.file.set_name_pointer(val),
+            0xA3 => self.file.ascend_to_parent(),
+            0xA4 => self.file.write_byte(val),
+            0xA5 => self.file.write_byte(val),
+            0xA6 => self.file.set_child_name_pointer(val),
+            0xA7 => self.file.descend_to_child(),
+            0xA8 =>   write_hh!(self.file.new_pointer),
+            0xA9 =>   write_hl!(self.file.new_pointer),
+            0xAA =>   write_lh!(self.file.new_pointer),
+            0xAB => { write_ll!(self.file.new_pointer); self.file.commit_pointer() },
+            0xAC =>   write_hh!(self.file.new_length),
+            0xAD =>   write_hl!(self.file.new_length),
+            0xAE =>   write_lh!(self.file.new_length),
+            0xAF => { write_ll!(self.file.new_length); self.file.commit_length() },
 
             // Bytestreams
             0x96 => self.stream.write_stdout(val),