nasm: Remove the option to disassemble a file

This never quite worked and since multiple re-writes of the
assembler/parser it was even commented out. Moreover, this functionality
appears to be more suitable to the new `readrom` binary introduced in
commit 407048d ("Add the readrom binary"). Hence, just remove this
altogether.

Signed-off-by: Miquel Sabaté Solà <[email protected]>

crates/nasm/src/main.rs

@@ -17,13 +17,8 @@ struct Args {
     #[arg(short = 'c', long)]
     config: Option<String>,
 
-    /// Disassemble instead of assembling. Disabled by default.
-    #[arg(short, long, default_value_t = false)]
-    disassemble: bool,
-
     /// Place the output into the given <OUT> file. Ignored if the `stdout` flag
-    /// is provided. Defaults to `out.nes` when assembling, and to `out.s` when
-    /// disassembling.
+    /// is provided. Defaults to `out.nes`.
     #[arg(short = 'o', long)]
     out: Option<String>,
 
@@ -46,14 +41,7 @@ fn main() -> Result<()> {
     let mut output: Box<dyn Write> = if args.stdout {
         Box::new(io::stdout())
     } else {
-        match args.out {
-            Some(file) => Box::new(File::create(file)?),
-            None => Box::new(File::create(if args.disassemble {
-                "out.s"
-            } else {
-                "out.nes"
-            })?),
-        }
+        Box::new(File::create(args.out.unwrap_or(String::from("out.nes")))?)
     };
 
     // Select the linker configuration.
@@ -70,33 +58,21 @@ fn main() -> Result<()> {
         None => NROM.to_vec(),
     };
 
-    // Initialize the assembler with the given linker configuration.
+    // And assemble.
     let mut assembler = Assembler::new(mapping);
-
-    // After the parse operation, just print the results.
-    if args.disassemble {
-        println!("TBD");
-        // let instructions = assembler.disassemble(input)?;
-
-        // for instr in instructions {
-        //     output.write_all(instr.to_human().as_bytes())?;
-        //     output.write_all("\n".as_bytes())?;
-        // }
-    } else {
-        match assembler.assemble(input) {
-            Ok(bundles) => {
-                for b in bundles {
-                    for i in 0..b.size {
-                        output.write_all(&[b.bytes[i as usize]])?;
-                    }
+    match assembler.assemble(input) {
+        Ok(bundles) => {
+            for b in bundles {
+                for i in 0..b.size {
+                    output.write_all(&[b.bytes[i as usize]])?;
                 }
             }
-            Err(errors) => {
-                for err in errors {
-                    println!("{}", err);
-                }
-                std::process::exit(1);
+        }
+        Err(errors) => {
+            for err in errors {
+                println!("{}", err);
             }
+            std::process::exit(1);
         }
     }