From 7d1a546ec98123585ec1251183637d4327902dde Mon Sep 17 00:00:00 2001
From: ghostly_zsh <pokeball.181818@gmail.com>
Date: Tue, 27 Aug 2024 15:15:20 -0500
Subject: [PATCH] fix multiple parameter functions. change panic when 0
 arguments provided to running kabel

---
 kabel/src/codegen.rs |  2 +-
 kabel/src/main.rs    |  7 ++++++-
 kabel/src/vm.rs      |  6 +-----
 kabel/tmp.kab        | 10 +++-------
 4 files changed, 11 insertions(+), 14 deletions(-)

diff --git a/kabel/src/codegen.rs b/kabel/src/codegen.rs
index b0593c716aba047fc3ba61e5e027c659e01c181d..0f0d7699f0775f4fdda642d1b5f1d5b1842017a3 100644
--- a/kabel/src/codegen.rs
+++ b/kabel/src/codegen.rs
@@ -602,7 +602,7 @@ impl Codegen {
         }
     }
     pub fn visit_call(&mut self, ast: &AST, ident: AST, args: Vec<AST>) {
-        for arg in args.iter().rev() {
+        for arg in args.iter() {
             self.visit(arg.clone());
         }
         self.visit(ident);
diff --git a/kabel/src/main.rs b/kabel/src/main.rs
index 2ce4fc3b1dbc831eb3fb3b29b23e2fbbca2b9746..133df716d6633cc208044112fc50e489eada123b 100644
--- a/kabel/src/main.rs
+++ b/kabel/src/main.rs
@@ -1,11 +1,15 @@
 //use std::{env, fs};
 
-use std::{env, fs};
+use std::{env, fs, process::exit};
 
 use kabel::{debug::{debug_ast, debug_bytecode, debug_stack, debug_token_array}, run_codegen, run_lexer, run_parser, run_semantic_analysis};
 
 fn main() {
     let args: Vec<String> = env::args().collect();
+    if args.len() < 2 {
+        println!("Must provide kabel file to run");
+        exit(1);
+    }
     let program =
         fs::read_to_string(args[1].clone()).unwrap();
 
@@ -62,6 +66,7 @@ fn main() {
         output += "\n";
     }
     vm.unit_ptr = 0;
+    println!("{}", output);
 
     output += "\n";
     match vm.run(&mut output) {
diff --git a/kabel/src/vm.rs b/kabel/src/vm.rs
index de068a26aed3d5f782de65a5a3a34ba7c142de27..6ddcd38d4b1d1a9a1fa3d83b6fe22c725fc22bd1 100644
--- a/kabel/src/vm.rs
+++ b/kabel/src/vm.rs
@@ -325,12 +325,8 @@ impl VM {
                         if num_args as usize != function.arity {
                             return Err(vm_error!(self, RuntimeErrorKind::IncorrectArity, "Function has {} arguments, {} provided", function.arity, num_args))
                         }
-                        self.stack_offset = self.stack.len()-1;
+                        self.stack_offset = self.stack.len() - num_args as usize;
                         self.call_stack.push((self.unit_ptr, self.ip, self.stack_offset));
-                        for _ in 0..num_args {
-                            let arg = self.stack.pop().expect("Missing arguments in call");
-                            self.stack.push(arg);
-                        }
                         self.stack.insert(self.stack.len()-num_args as usize, Value::Fun(function));
                         self.ip = 0;
                         self.unit_ptr = function.unit_ptr as usize;
diff --git a/kabel/tmp.kab b/kabel/tmp.kab
index 330ab7b0b84aab79d4b539194a8015e3dfb0ecf8..b1c15739a79a219627756fba7639500a71d5b212 100644
--- a/kabel/tmp.kab
+++ b/kabel/tmp.kab
@@ -1,8 +1,4 @@
-var add_one = (num) => {
-    return num + 1;
-};
-function add_two(num) {
-    return num + 2;
+function apply(fn, value) {
+    return fn(value);
 }
-print add_one(1);
-print add_two(2);
+print apply((value) => { return value + 1; }, 1);