Emit code to designated file

tools/midenc/src/compiler/emitter.rs

@@ -1,3 +1,4 @@
+use std::{fs::File, io::prelude::*, path::Path};
 use miden_assembly::ast::{self as masm};
 
 /// The emitter for MASM output.
@@ -7,52 +8,16 @@ pub enum MASMAst {
     Module(masm::ModuleAst),
 }
 
-pub struct MASMEmitter {
-    writer: BufferWriter,
-}
-
-impl miden_diagnostics::Emitter for MASMEmitter {
-
-    fn buffer(&self) -> Buffer {
-        self.writer.buffer()
-    }
-
-    fn print(&self, buffer: Buffer) -> std::io::Result<()> {
-        self.writer.print(&buffer)
-    }
-}
-
-impl MASMEmitter {
-
-    pub fn new () -> Self {
-        Self {
-            writer: BufferWriter::new(ColorChoice::Auto),
+impl fmt::Display for MASMAst {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        match self {
+            Program(p) => write!("{}", p),
+            Module(m) => write!("{}", m),
         }
     }
 }
 
-impl Pass for Emitter {
-    type Input = MASMAst;
-    type Output = ();
-
-    /// Runs the emitter on the AST 
-    ///
-    /// Errors should be reported via the registered error handler,
-    /// Passes should return `Err` to signal that the pass has failed
-    /// and compilation should be aborted
-    fn run(&mut self, input: Self::Input) -> anyhow::Result<Self::Output> {
-        self.writer.write!("{}", input);
-    }
-
-    /// Implementation of Pass::chain
-    ///
-    /// # Panics
-    /// Panics if called. No chaining is possible after the emitter.
-    fn chain<P>(self, pass: P) -> Chain<Self, P>
-    where
-        Self: Sized,
-        P: for Pass<Input = Self::Output>
-    {
-        panic!("Attempting to chain a pass after the emitter.");
-    }
+fn write_ast_to_file<P: AsRef<Path>>(ast: &MASMAst, path: P) -> io::Result<()> {
+    let mut file = File::create(path);
+    file.write_fmt(format_args!("{}", ast))
 }