minor code changes for codegen

c_compiler/example.dsc

@@ -20,8 +20,6 @@ int greater(int a, int b) {
 }
 
 int main() {
-  printnum(greater(5, add_(5, 5)));
-
-  printnum(factorial(5));
+  printnum(-5);
   return 0;
 }

c_compiler/src/codegen.rs

@@ -1,8 +1,8 @@
+use std::collections::HashMap;
 use std::hash::Hash;
 use std::sync::LazyLock;
 use std::sync::atomic::AtomicU32;
 use std::time::SystemTime;
-use std::{collections::HashMap, path::PathBuf};
 
 use chrono::{DateTime, Local};
 
@@ -24,10 +24,7 @@ pub struct CodeGenerator {
 }
 
 static GLOBAL_METHODS: LazyLock<HashMap<&str, &str>> = LazyLock::new(|| {
-    hash_map! {
-        "print" => "print::print",
-        "printnum" => "print::print_num"
-    }
+    HashMap::from([("print", "print::print"), ("printnum", "print::print_num")])
 });
 
 fn import(name: &str, path: &str) -> String {
@@ -183,7 +180,7 @@ impl CodeGenerator {
         for (i, param) in params.iter().enumerate() {
             let offset = 8 + (i as i32 * 4); // Parameters start at bpr+8
             // Track that this parameter is at a stack location
-            let (reg, mut load_code) = self.allocator.alloc_var(&param.name).unwrap();
+            let (reg, load_code) = self.allocator.alloc_var(&param.name).unwrap();
             code.extend(load_code);
             code.push(format!("\tldw bpr, {}, {}", reg, offset));
         }

c_compiler/src/main.rs

@@ -1,5 +1,3 @@
-#![feature(hash_map_macro)]
-
 use std::fmt;
 
 use crate::{codegen::CodeGenerator, lexer::Lexer, parser::Parser};