feat: unify AST structures, introduce MIR and update codegen

src/main.rs

@@ -4,9 +4,11 @@ use clap::Parser as ClapParser;
 
 use crate::frontend::parser::Parser;
 use crate::frontend::sema::Sema;
+use crate::middle::builder::MirBuilder;
 
 pub mod backend;
 pub mod frontend;
+pub mod middle;
 
 use crate::backend::cranelift::CraneliftBackend;
 
@@ -55,8 +57,10 @@ fn main() {
         exit(1);
     }
 
+    let mir_module = MirBuilder::build(&typed_module);
+
     let backend = CraneliftBackend::new();
-    let (ir, obj_bytes) = backend.compile_module(&typed_module);
+    let (ir, obj_bytes) = backend.compile_module(&mir_module);
 
     if cli.emit_ir {
         println!("{}", ir);