added assembler skeleton code

Cargo.lock

@@ -234,6 +234,9 @@ dependencies = [
 [[package]]
 name = "assembler"
 version = "0.2.0"
+dependencies = [
+ "common",
+]
 
 [[package]]
 name = "async-broadcast"
@@ -975,6 +978,7 @@ dependencies = [
 name = "emulator"
 version = "0.1.0"
 dependencies = [
+ "assembler",
  "common",
  "eframe",
  "egui",

assembler/Cargo.toml

@@ -5,3 +5,4 @@ edition.workspace = true
 authors.workspace = true
 
 [dependencies]
+common = { path = "../common" }

assembler/src/lib.rs

@@ -1,14 +1,14 @@
-pub fn add(left: u64, right: u64) -> u64 {
-    left + right
+use common::prelude::Instruction;
+
+pub fn assemble(src: &str) -> Vec<Instruction> {
+    todo!()
 }
 
-#[cfg(test)]
-mod tests {
-    use super::*;
+pub fn disassemble(binary: Vec<Instruction>) -> String {
+    // TODO: disassembling functionality
 
-    #[test]
-    fn it_works() {
-        let result = add(2, 2);
-        assert_eq!(result, 4);
-    }
+    // - we probably don't need to implement this for a while yet.
+    // - this method should recover symbols such as labels and variables from the human written assembly, recognising
+    //   sequences that are expansions of pseduo-instructions and reversing this to produce near enough the original source code.
+    todo!()
 }

emulator/Cargo.toml

@@ -9,6 +9,7 @@ path = "src/lib.rs"
 
 [dependencies]
 common = { path = "../common" }
+assembler = { path = "../assembler" }
 eframe = "0.31.1"
 egui = "0.31.1"
 rfd = "0.15.3"

emulator/src/emulator/ui/editor.rs

@@ -279,6 +279,14 @@ impl Editor {
 
             // builds the current file
             if ui.button("Build").clicked() {
+                let instructions = assembler::assemble(&self.text);
+
+                // TODO: uncomment this once assembler works!!!
+                // self.output = instructions
+                //     .iter()
+                //     .flat_map(|i| i.encode().to_le_bytes().to_vec())
+                //     .collect();
+
                 self.output = vec![0x00; 256];
             }