Finalising functions

typechecking still buggy, but close enough cause i cant handle any more
typechecker dev

added:
 - Functions
 - Constants
 - Better file positions for error reporting
 - Better error reporting, with examples being drawn in term

-MC

include/compat.mcl

@@ -1 +1 @@
-// todo: add some sort of macro
+// todo: add some sort of macrow

include/int.mcl

@@ -2,13 +2,12 @@ const NULL 0 end
 const false 0 end
 const true 1 end
 
-fn div with int int returns int int divmod drop end
+fn div with int int returns int then divmod drop done
-fn mod with int int returns int int divmod swap drop end
+fn mod with int int returns int then divmod swap drop done
-fn / with int int returns int int div end
-fn % with int int returns int int mod end
 
-fn 2dup with any any returns any over over end
+
-fn 2drop with any any returns any drop drop end
+fn dup2 with any any returns any any any any then over over done
+fn drop2 with any any returns void then drop drop done
 
 const sizeof(u64) 8 end
 const sizeof(u32) 4 end

include/io.mcl

@@ -5,9 +5,9 @@
 // @arg buff_ptr: Ptr - pointer to the buffer to write
 // @arg fd: Int - file descriptor
 // @ret Int
-fn write with int ptr int returns int do
+fn write with int ptr int returns int then
     SYS_write syscall3
-end
+done
 
 // Write to a file descriptor using the SYS_write syscall
 // args: [buff_size, buff_ptr, fd]
@@ -15,9 +15,9 @@ end
 // @arg buff_ptr: Ptr - pointer to the buffer to write
 // @arg fd: Int - file descriptor
 // @ret Int
-fn read with int ptr int returns int do
+fn read with int ptr int returns int then
     SYS_read syscall3
-end
+done
 
 
 // Print a string to STDOUT
@@ -25,18 +25,18 @@ end
 // @arg buff_size: Int - number of bytes to write
 // @arg buff_ptr: Ptr - pointer to the buffer to write
 // @ret NULL
-fn puts with int ptr returns null do
+fn puts with int ptr returns void then
     STDOUT write drop
-end
+done
 
 // Print a string to STDERR
 // args: [str_size, str_ptr]
 // @arg buff_size: Int - number of bytes to write
 // @arg buff_ptr: Ptr - pointer to the buffer to write
 // @ret NULL
-fn eputs with int ptr returns null do
+fn eputs with int ptr returns void then
     STDOUT write drop
-end
+done
 
 // TODO: make putc and eputc after we make local mem
 
@@ -44,7 +44,7 @@ end
 // args: [exit_code]
 // @arg exit_code: Int
 // @ret NULL/NEVER
-fn exit with int returns null do
+fn exit with int returns void then
     SYS_exit syscall1 drop
-end
+done
 

include/util.mcl

@@ -5,11 +5,11 @@
 // @arg str_len: Int
 // @arg str_ptr: Ptr
 // @ret NULL/NEVER
-fn assert with bool int ptr returns null do
+fn assert with bool int ptr returns void then
     rot
     if else
     "Assert failed: \"" eputs eputs
     "\". Exiting!\n" eputs
     1 exit
     end
-end
+done

src/compile/linux_x86_64.rs

@@ -1,13 +1,14 @@
-use std::{fs, path::PathBuf, io::{Write, BufWriter}};
+use std::{fs, path::PathBuf, io::{Write, BufWriter}, collections::HashMap};
 use crate::{constants::{Operator, OpType, KeywordType}, Args};
 use color_eyre::Result;
 use crate::compile::commands::linux_x86_64_compile_and_link;
 use crate::constants::InstructionType;
-use super::commands::linux_x86_64_run;
+use super::{commands::linux_x86_64_run, Constant, Memory, Function};
+use eyre::eyre;
 
 
 pub fn compile(tokens: &[Operator], args: &Args) -> Result<i32>{
-    let debug = args.optimisation == "D";
+    let debug = args.get_opt_level()? < 1;
 
     let mut of_c = PathBuf::from(&args.out_file);
     let (mut of_o, mut of_a) = if args.out_file == *crate::DEFAULT_OUT_FILE {
@@ -24,19 +25,19 @@ pub fn compile(tokens: &[Operator], args: &Args) -> Result<i32>{
     of_o.set_extension("o");
     of_a.set_extension("nasm");
 
-    
 
     let file = fs::File::create(&of_a)?;
     let mut writer = BufWriter::new(&file);
-    let mut memories:  Vec<(usize, usize)> = Vec::new();
+    let mut memories:  Vec<Memory> = Vec::new();
-    let mut constants:  Vec<(String, Option<usize>, Option<String>)> = Vec::new();
+    let mut constants:  HashMap<String, Constant> = HashMap::new();
+    let mut functions: Vec<Function> = Vec::new();
     // println!("{}", tokens.len());
     let mut strings: Vec<String> = Vec::new();
-
+    
     writeln!(writer, "BITS 64")?;
     writeln!(writer, "segment .text")?;
 
-    writeln!(writer, "print:")?;
+    writeln!(writer, "_dbg_print:")?;
     writeln!(writer, "    mov     r9, -3689348814741910323")?;
     writeln!(writer, "    sub     rsp, 40")?;
     writeln!(writer, "    mov     BYTE [rsp+31], 10")?;
@@ -73,7 +74,7 @@ pub fn compile(tokens: &[Operator], args: &Args) -> Result<i32>{
     writeln!(writer, "global _start")?;
     writeln!(writer, "_start:")?; 
     writeln!(writer, "    lea rbp, [rel ret_stack]")?;
-    writeln!(writer, "    call func_main")?;
+    writeln!(writer, "    call main")?;
     writeln!(writer, "    jmp end")?;
 
 
@@ -85,36 +86,30 @@ pub fn compile(tokens: &[Operator], args: &Args) -> Result<i32>{
             writeln!(writer, "addr_{ti}:")?;
             if token.typ == OpType::Instruction(InstructionType::PushInt) {
                 writeln!(writer, "    ;; -- {:?} {}", token.typ, token.value)?;
-            } else
+            } else if token.typ == OpType::Instruction(InstructionType::PushStr) {
-            if token.typ == OpType::Instruction(InstructionType::PushStr) {
+                writeln!(writer, "    ;; -- {:?} {}", token.typ, token.text.escape_debug())?;
-                writeln!(writer, "    ;; -- {:?} {}", token.typ, strings[token.value].escape_debug())?;
             } else {
                 writeln!(writer, "    ;; -- {:?}", token.typ)?;
             }
         } else {
-            if ti != 0{
 
-                if &tokens[ti-1].typ == &OpType::Keyword(KeywordType::Else) ||
+            if ti != 0 && tokens[ti-1].typ == OpType::Keyword(KeywordType::Else) ||
-                    &tokens[ti-1].typ == &OpType::Keyword(KeywordType::End){
+                tokens[ti-1].typ == OpType::Keyword(KeywordType::End){
-                    writeln!(writer, "addr_{ti}:")?;
+                writeln!(writer, "addr_{ti}:")?;
-                }
-                
             }
-            if ti + 1 < tokens.len() && &tokens[ti+1].typ == &OpType::Keyword(KeywordType::End) {
+
+            if ti + 1 < tokens.len() && tokens[ti+1].typ == OpType::Keyword(KeywordType::End) {
                 writeln!(writer, "addr_{ti}:")?;
             }
             
-            match &token.typ {
+            if let OpType::Keyword(keyword) = &token.typ {
-                OpType::Keyword(keyword) => {
+                match keyword {
-                    match keyword {
+                    &KeywordType::End |
-                        &KeywordType::End |
+                    &KeywordType::While => {
-                        &KeywordType::While => {
+                        writeln!(writer, "addr_{ti}:")?;
-                            writeln!(writer, "addr_{ti}:")?;
-                        }
-                        _ => ()
                     }
-                }   
+                    _ => ()
-                _ => ()
+                }
             }
 
         }
@@ -142,7 +137,7 @@ pub fn compile(tokens: &[Operator], args: &Args) -> Result<i32>{
                     },
                     InstructionType::Print => {
                         writeln!(writer, "    pop rdi")?;
-                        writeln!(writer, "    call print")?;
+                        writeln!(writer, "    call _dbg_print")?;
                         ti += 1;
                     },
         
@@ -412,11 +407,11 @@ pub fn compile(tokens: &[Operator], args: &Args) -> Result<i32>{
                         ti += 1;
                     },
                     InstructionType::None => {
-                        println!("{:?}", token);
+                        println!("{token:?}");
                         unreachable!()
                     },
                     InstructionType::FnCall => {
-                        writeln!(writer, "    call func_{}", token.text)?;
+                        writeln!(writer, "    call {}", token.text)?;
                         ti += 1;
                     },
                     InstructionType::Return => {
@@ -426,45 +421,28 @@ pub fn compile(tokens: &[Operator], args: &Args) -> Result<i32>{
                         writeln!(writer, "    ret")?;
                         ti += 1;
                     },
-                    InstructionType::CastBool => {
+                    InstructionType::CastBool |
-                        ti += 1;
+                    InstructionType::CastPtr |
-                    }
+                    InstructionType::CastInt |
-                    InstructionType::CastPtr => {
+                    InstructionType::CastVoid |
-                        ti += 1;
+                    InstructionType::TypeBool |
-                    }
+                    InstructionType::TypePtr |
-                    InstructionType::CastInt => {
+                    InstructionType::TypeInt |
-                        ti += 1;
+                    InstructionType::TypeVoid |
-                    }
+                    InstructionType::TypeStr |
-                    InstructionType::CastVoid => {
+                    InstructionType::TypeAny |
-                        ti += 1;
+                    InstructionType::Returns |
-                    }
-                    InstructionType::TypeBool => {
-                        ti += 1;
-                    }
-                    InstructionType::TypePtr => {
-                        ti += 1;
-                    }
-                    InstructionType::TypeInt => {
-                        ti += 1;
-                    }
-                    InstructionType::TypeVoid => {
-                        ti += 1;
-                    }
-                    InstructionType::TypeStr => {
-                        ti += 1;
-                    }
-                    InstructionType::TypeAny => {
-                        ti += 1;
-                    }
-                    InstructionType::Returns => {
-                        ti += 1;
-                    }
                     InstructionType::With => {
                         ti += 1;
                     }
                     InstructionType::ConstUse => {
                         writeln!(writer, "    mov rax, qword [const_{}]", token.text)?;
                         writeln!(writer, "    push rax")?;
+
+                        let mut c = constants.get(&token.text).unwrap().clone();
+                        c.used = true;
+                        constants.remove(&token.text);
+                        constants.insert(token.text.clone(), c);
                         ti += 1;
                     },
                 }
@@ -475,12 +453,13 @@ pub fn compile(tokens: &[Operator], args: &Args) -> Result<i32>{
                 match keyword {
 
                     // block
-                    KeywordType::If => {
+                    KeywordType::If |
+                    KeywordType::Do => {
                         writeln!(writer, "    pop rax")?;
                         writeln!(writer, "    test rax, rax")?;
                         writeln!(writer, "    jz addr_{}", token.jmp)?;
                         ti += 1;
-                    },
+                    }
                     KeywordType::Else => {
                         writeln!(writer, "    jmp addr_{}", token.jmp)?;
                         ti += 1;
@@ -488,12 +467,6 @@ pub fn compile(tokens: &[Operator], args: &Args) -> Result<i32>{
                     KeywordType::While => {
                         ti += 1;
                     }
-                    KeywordType::Do => {
-                        writeln!(writer, "    pop rax")?;
-                        writeln!(writer, "    test rax, rax")?;
-                        writeln!(writer, "    jz addr_{}", token.jmp)?;
-                        ti += 1;
-                    }
                     KeywordType::End => {
                         if ti + 1 != token.jmp {
                             // writeln!(writer, "    jmp addr_{}", token.jmp)?;
@@ -501,23 +474,42 @@ pub fn compile(tokens: &[Operator], args: &Args) -> Result<i32>{
                         ti += 1;
                     },
                     KeywordType::Memory => {
-                        memories.push((token.addr.unwrap(), token.value));
+                        memories.push(Memory { size: token.value, loc: token.loc.clone(), id: token.addr.unwrap() });
                         ti += 1;
                     }
-                    KeywordType::Include => unreachable!(),
+                    KeywordType::ConstantDef => {
-                    KeywordType::Constant => {
                         // TODO: after we add c style strings add supoort for them in constants
-                        constants.push((token.text.clone(), Some(token.value), None));
+                        let a = args.get_opt_level()? < 1;
+                        let c = Constant{
+                            loc: token.loc.clone(),
+                            name: token.text.clone(),
+                            value_i: Some(token.value),
+                            value_s: None,
+                            used: a,
+                        };
+                        
+                        constants.insert(token.text.clone(), c);
                         ti += 1;
                     },
-                    KeywordType::Function => {
+                    KeywordType::FunctionDef => {
-                        writeln!(writer, "func_{}:", token.text)?;
+                        writeln!(writer, "{}:", token.text)?;
                         writeln!(writer, "    pop rbx")?;
                         writeln!(writer, "    mov qword [rbp], rbx")?;
                         writeln!(writer, "    add rbp, 8")?;
+                        functions.push(Function { loc: token.loc.clone(), name: token.text.clone() });
                         ti += 1;
                     },
-                    KeywordType::FunctionDo => ti += 1,
+                    KeywordType::FunctionDone => {
+                        writeln!(writer, "    sub rbp, 8")?;
+                        writeln!(writer, "    mov rbx, qword [rbp]")?;
+                        writeln!(writer, "    push rbx")?;
+                        writeln!(writer, "    ret")?;
+                        ti += 1;
+                    }
+                    KeywordType::FunctionThen => ti += 1,
+                    KeywordType::Function |
+                    KeywordType::Include |
+                    KeywordType::Constant => unreachable!(),
                 }
             }
         }
@@ -534,10 +526,14 @@ pub fn compile(tokens: &[Operator], args: &Args) -> Result<i32>{
         writeln!(writer, "    str_{}: db {} ; {}", i, s_list, s.escape_default())?;
     }
     
-    for (_, s) in constants.iter().enumerate() {
+    for (_, c) in constants {
-        if let Some(v) = &s.1 {
+        if !c.used {
-            writeln!(writer, "    const_{}: dq {}", s.0, v)?;
+            continue;
-        } else if let Some(_v) = &s.2 {
+        }
+
+        if let Some(v) = &c.value_i {
+            writeln!(writer, "    const_{}: dq {}", c.name, v)?;
+        } else if let Some(_v) = &c.value_s {
             todo!();
         } else {
             unreachable!();
@@ -547,8 +543,8 @@ pub fn compile(tokens: &[Operator], args: &Args) -> Result<i32>{
     
     
     writeln!(writer, "segment .bss")?;
-    for (_, s) in memories.iter().enumerate() {
+    for s in memories {
-        writeln!(writer, "    mem_{}: resb {}", s.0, s.1)?;
+        writeln!(writer, "    mem_{}: resb {}", s.id, s.size)?;
     }
     writeln!(writer, "    ret_stack: resq 256")?;
     
@@ -557,6 +553,13 @@ pub fn compile(tokens: &[Operator], args: &Args) -> Result<i32>{
     // }
 
     writer.flush()?;
+
+    
+    pre_compile_steps(
+        String::from_utf8_lossy(writer.buffer()).to_string().as_str(),
+        functions
+    )?;
+
     linux_x86_64_compile_and_link(&of_a, &of_o, &of_c, args.quiet)?;
     if args.run {
         let c = linux_x86_64_run(&of_c, &[], args.quiet)?;
@@ -565,4 +568,23 @@ pub fn compile(tokens: &[Operator], args: &Args) -> Result<i32>{
 
 
     Ok(0)
+}
+
+
+fn pre_compile_steps(_code: &str, functions: Vec<Function>) -> Result<()> {
+    let mut has_main = false;
+
+    for func in functions {
+        if func.name == "main" {
+            has_main = true;
+        }
+    }
+
+
+    if !has_main {
+        crate::errors::missing_main_fn();
+        return Err(eyre!(""));
+    }
+    
+    Ok(())
 }

src/compile/mod.rs

@@ -1,5 +1,27 @@
+use crate::constants::Loc;
+
 pub mod linux_x86_64;
 pub mod commands;
 
-pub const MEM_SZ: usize = 640 * 1000; // 4kb
+#[derive(Debug, Clone)]
-pub const STRING_SZ: usize = 640 * 1000; // 4kb
+pub struct Constant {
+    pub loc: Loc,
+    pub name: String,
+    pub value_i: Option<usize>,
+    pub value_s: Option<String>,
+    pub used: bool
+    // extern: bool
+}
+
+#[derive(Debug, Clone)]
+pub struct Memory {
+    pub size: usize,
+    pub loc: Loc,
+    pub id: usize
+}
+
+#[derive(Debug, Clone)]
+pub struct Function {
+    pub loc: Loc,
+    pub name: String
+}

src/config.rs

@@ -0,0 +1,20 @@
+/**
+ * Prints out extra information
+ */
+pub const DEV_MODE: bool = true;
+
+pub const DEFAULT_OUT_FILE: &str = "a.out";
+pub const DEFAULT_INCLUDES: [&str;1] = [
+    "./include",
+    // "~/.mclang/include",
+];
+
+
+/**
+ * Interpreting configs
+ * `MEM_SZ` is the buffer size for memory
+ * `STRING_SZ` is the buffer size for strings
+ * if you have buffer overflow consider increasing these
+ */
+pub const MEM_SZ: usize = 640 * 1000; // 4kb
+pub const STRING_SZ: usize = 640 * 1000; // 4kb

src/constants.rs

@@ -71,7 +71,7 @@ pub enum InstructionType {
     None // Used for macros and any other non built in word definitions
 
 }
-#[derive(Debug, Clone, PartialEq)]
+#[derive(Debug, Clone, Copy, PartialEq)]
 pub enum KeywordType {
     If,
     Else,
@@ -81,8 +81,11 @@ pub enum KeywordType {
     Include,
     Memory,
     Constant,
+    ConstantDef,
     Function,
-    FunctionDo
+    FunctionDef,
+    FunctionThen,
+    FunctionDone
 }
 
 #[derive(Debug, Clone, PartialEq)]
@@ -129,7 +132,7 @@ impl OpType {
 
                     InstructionType::PushInt => "Number",
                     InstructionType::PushStr => "String",
-                    InstructionType::Print => "print",
+                    InstructionType::Print => "_dbg_print",
                     InstructionType::Dup => "dup",
                     InstructionType::Drop => "drop",
                     InstructionType::Rot => "rot",
@@ -192,7 +195,10 @@ impl OpType {
                     KeywordType::Memory => "memory",
                     KeywordType::Function => "fn",
                     KeywordType::Constant => "const",
-                    KeywordType::FunctionDo => "do",
+                    KeywordType::FunctionThen => "then",
+                    KeywordType::FunctionDone => "done",
+                    KeywordType::ConstantDef => "constant Definition (internal)",
+                    KeywordType::FunctionDef => "function definition (internal)"
                 }
             }
             

src/errors/mod.rs

@@ -0,0 +1,18 @@
+use crate::{error, help, code_block};
+
+
+
+pub fn missing_main_fn() {
+    error!("Main function not found, please create one lol");
+    help!("Heres a basic main function with code that prints hello world:\n{}", 
+        code_block!(
+            concat!(
+                "include \"std.mcl\"\n",
+                "\n",
+                "fn main with void retuns void then\n",
+                "    \"Hello world!\\n\" puts\n",
+                "done\n"
+            )
+        )
+    );
+}

src/interpret/linux_x86_64/mod.rs

@@ -1,9 +1,11 @@
 use std::collections::HashMap;
 
-use crate::{constants::{OpType, Loc, InstructionType, KeywordType}, lerror, error};
+use crate::{constants::{OpType, Loc, InstructionType, KeywordType, Operator}, lerror, error};
 // use crate::util::logger;
 use color_eyre::Result;
 use eyre::eyre;
+
+use super::{Memory, Function, Constant};
 mod syscalls;
 
 fn stack_pop(stack: &mut Vec<usize>, pos: &Loc) -> Result<usize> {
@@ -13,56 +15,66 @@ fn stack_pop(stack: &mut Vec<usize>, pos: &Loc) -> Result<usize> {
     }
 }
 
-pub fn run(tokens: &[crate::constants::Operator]) -> Result<i32>{
+pub fn run(ops: &[crate::constants::Operator]) -> Result<i32>{
     let mut stack: Vec<usize> = Vec::new();
-    let mut ti = 0;
+    let mut mem: Vec<u64> = vec![0; crate::MEM_SZ + crate::STRING_SZ];
-    let mut mem: Vec<u64> = vec![0; crate::compile::MEM_SZ + crate::compile::STRING_SZ];
     let mut string_idx = 0;
+    
+    let prerunned = pre_run(ops);
+    let functions = prerunned.functions;
+    let constants = prerunned.constants;
+    let memories = prerunned.memories;
 
-    let mut memories: HashMap<usize, usize> = HashMap::new();
+    let mut ret_stack: Vec<usize> = Vec::new();
+    
     // for token in &tokens {
     //     println!("{{typ: \"{:?}\", val: {}, jmp: {}}}", token.typ, token.value, token.jmp);
-
     // }
-    while ti < tokens.len() {
+        
-        let token = &tokens[ti];
+    // jump to main func    
-        let pos = token.loc.clone();
+    let mut ip = if let Some(i) = functions.get("main") {i.id} else {
-        // println!("{:?}", token.typ);
+        crate::errors::missing_main_fn();
-        match token.typ.clone() {
+        return Err(eyre!(""));
+    };
+    
+    while ip < ops.len() {
+        let op = &ops[ip];
+        let pos = op.loc.clone();
+        match op.typ.clone() {
             OpType::Instruction(instruction) => {
                 match instruction {
                     InstructionType::PushInt => {
-                        stack.push(token.value);
+                        stack.push(op.value);
-                        ti += 1;
+                        ip += 1;
                     },
                     InstructionType::PushStr => {
-                        if  token.addr.is_none() {
+                        if  op.addr.is_none() {
-                            stack.push(token.text.len()); // string len
+                            stack.push(op.text.len()); // string len
-                            stack.push(string_idx + crate::compile::MEM_SZ);
+                            stack.push(string_idx + crate::MEM_SZ);
                             
-                            for c in token.text.bytes() {
+                            for c in op.text.bytes() {
-                                mem[crate::compile::MEM_SZ + string_idx] = c as u64;
+                                mem[crate::MEM_SZ + string_idx] = u64::from(c);
                                 string_idx += 1;
                             }
                         } else {
-                            stack.push(token.text.len()); 
+                            stack.push(op.text.len()); 
-                            if let Some(addr) = token.addr {
+                            if let Some(addr) = op.addr {
                                 stack.push(addr);
                             }
                         }
         
         
-                        ti += 1;
+                        ip += 1;
                     },
                     InstructionType::Drop => {
                         stack.pop();
-                        ti += 1;
+                        ip += 1;
                     },
                     InstructionType::Dup => {
                         let a = stack_pop(&mut stack, &pos)?;
                         stack.push(a);
                         stack.push(a);
-                        ti += 1;
+                        ip += 1;
                     },
         
                     InstructionType::Rot => {
@@ -72,14 +84,14 @@ pub fn run(tokens: &[crate::constants::Operator]) -> Result<i32>{
                         stack.push(b);
                         stack.push(a);
                         stack.push(c);
-                        ti += 1;
+                        ip += 1;
                     }
                     InstructionType::Swap => {
                         let a = stack_pop(&mut stack, &pos)?;
                         let b = stack_pop(&mut stack, &pos)?;
                         stack.push(a);
                         stack.push(b);
-                        ti += 1;
+                        ip += 1;
                     }
                     InstructionType::Over => {
                         let a = stack_pop(&mut stack, &pos)?;
@@ -87,52 +99,53 @@ pub fn run(tokens: &[crate::constants::Operator]) -> Result<i32>{
                         stack.push(b);
                         stack.push(a);
                         stack.push(b);
-                        ti += 1;
+                        ip += 1;
                     }
         
                     InstructionType::Print => {
                         let a = stack_pop(&mut stack, &pos)?;
                         println!("{a}");
                         // let _ = io::stdout().flush();
-                        ti += 1;
+                        ip += 1;
                     },
+                    #[allow(clippy::cast_possible_truncation)]
                     InstructionType::Load8 |
                     InstructionType::Load32 |
                     InstructionType::Load64 => {
                         let a = stack_pop(&mut stack, &pos)?;
-                        if a > crate::compile::MEM_SZ {
+                        if a > crate::MEM_SZ {
-                            lerror!(&token.loc, "Invalid memory address {a}");
+                            lerror!(&op.loc, "Invalid memory address {a}");
                             return Ok(1);
                         }
                         let byte = mem[a];
                         stack.push(byte as usize);
-                        ti += 1;
+                        ip += 1;
                     }
                     #[allow(clippy::cast_possible_truncation)]
                     InstructionType::Store8 => {
                         let val = stack_pop(&mut stack, &pos)?;
                         let addr = stack_pop(&mut stack, &pos)?;
                         
-                        if addr > crate::compile::MEM_SZ {
+                        if addr > crate::MEM_SZ {
-                            lerror!(&token.loc, "Invalid memory address {addr}");
+                            lerror!(&op.loc, "Invalid memory address {addr}");
                             return Ok(1);
                         }
 
-                        mem[addr] = val as u8 as u64;
+                        mem[addr] = u64::from(val as u8);
-                        ti += 1;
+                        ip += 1;
                     }
                     #[allow(clippy::cast_possible_truncation)]
                     InstructionType::Store32 => {
                         let val = stack_pop(&mut stack, &pos)?;
                         let addr = stack_pop(&mut stack, &pos)?;
                         
-                        if addr > crate::compile::MEM_SZ {
+                        if addr > crate::MEM_SZ {
-                            lerror!(&token.loc, "Invalid memory address {addr}");
+                            lerror!(&op.loc, "Invalid memory address {addr}");
                             return Ok(1);
                         }
 
-                        mem[addr] = val as u32 as u64;
+                        mem[addr] = u64::from(val as u32);
-                        ti += 1;
+                        ip += 1;
                     }
 
                     #[allow(clippy::cast_possible_truncation)]
@@ -140,13 +153,13 @@ pub fn run(tokens: &[crate::constants::Operator]) -> Result<i32>{
                         let val = stack_pop(&mut stack, &pos)?;
                         let addr = stack_pop(&mut stack, &pos)?;
                         
-                        if addr > crate::compile::MEM_SZ {
+                        if addr > crate::MEM_SZ {
-                            lerror!(&token.loc, "Invalid memory address {addr}");
+                            lerror!(&op.loc, "Invalid memory address {addr}");
                             return Ok(1);
                         }
 
                         mem[addr] = val as u64;
-                        ti += 1;
+                        ip += 1;
                     }
         
                     // math
@@ -154,77 +167,77 @@ pub fn run(tokens: &[crate::constants::Operator]) -> Result<i32>{
                         let a = stack_pop(&mut stack, &pos)?;
                         let b = stack_pop(&mut stack, &pos)?;
                         stack.push(b + a);
-                        ti += 1;
+                        ip += 1;
                     },
                     InstructionType::Minus => {
                         let a = stack_pop(&mut stack, &pos)?;
                         let b = stack_pop(&mut stack, &pos)?;
                         stack.push(b - a);
-                        ti += 1;
+                        ip += 1;
                     },
                     InstructionType::Equals => {
                         let a = stack_pop(&mut stack, &pos)?;
                         let b = stack_pop(&mut stack, &pos)?;
                         stack.push(usize::from(b == a));
-                        ti += 1;
+                        ip += 1;
                     },
                     InstructionType::Gt => {
                         let a = stack_pop(&mut stack, &pos)?;
                         let b = stack_pop(&mut stack, &pos)?;
                         stack.push(usize::from(b > a));
-                        ti += 1;
+                        ip += 1;
                     },
                     InstructionType::Lt => {
                         let a = stack_pop(&mut stack, &pos)?;
                         let b = stack_pop(&mut stack, &pos)?;
                         stack.push(usize::from(b < a));
-                        ti += 1;
+                        ip += 1;
                     },
                     InstructionType::NotEquals => {
                         let a = stack_pop(&mut stack, &pos)?;
                         let b = stack_pop(&mut stack, &pos)?;
                         stack.push(usize::from(b != a));
-                        ti += 1;
+                        ip += 1;
                     },
                     InstructionType::Ge => {
                         let a = stack_pop(&mut stack, &pos)?;
                         let b = stack_pop(&mut stack, &pos)?;
                         stack.push(usize::from(b >= a));
-                        ti += 1;
+                        ip += 1;
                     },
                     InstructionType::Le => {
                         let a = stack_pop(&mut stack, &pos)?;
                         let b = stack_pop(&mut stack, &pos)?;
                         stack.push(usize::from(b <= a));
-                        ti += 1;
+                        ip += 1;
                     },
         
                     InstructionType::Band => {
                         let a = stack_pop(&mut stack, &pos)?;
                         let b = stack_pop(&mut stack, &pos)?;
                         stack.push(a & b);
-                        ti += 1;
+                        ip += 1;
                     }
         
                     InstructionType::Bor => {
                         let a = stack_pop(&mut stack, &pos)?;
                         let b = stack_pop(&mut stack, &pos)?;
                         stack.push(a | b);
-                        ti += 1;
+                        ip += 1;
                     }
         
                     InstructionType::Shr => {
                         let a = stack_pop(&mut stack, &pos)?;
                         let b = stack_pop(&mut stack, &pos)?;
                         stack.push(b >> a);
-                        ti += 1;
+                        ip += 1;
                     }
         
                     InstructionType::Shl => {
                         let a = stack_pop(&mut stack, &pos)?;
                         let b = stack_pop(&mut stack, &pos)?;
                         stack.push(b << a);
-                        ti += 1;
+                        ip += 1;
                     }
                     
                     InstructionType::DivMod => {
@@ -232,13 +245,13 @@ pub fn run(tokens: &[crate::constants::Operator]) -> Result<i32>{
                         let b = stack_pop(&mut stack, &pos)?;
                         stack.push(b / a);
                         stack.push(b % a);
-                        ti += 1;
+                        ip += 1;
                     }
                     InstructionType::Mul => {
                         let a = stack_pop(&mut stack, &pos)?;
                         let b = stack_pop(&mut stack, &pos)?;
                         stack.push(b * a);
-                        ti += 1;
+                        ip += 1;
                     }
                     InstructionType::Syscall0 => {
                         todo!();
@@ -268,7 +281,7 @@ pub fn run(tokens: &[crate::constants::Operator]) -> Result<i32>{
                         };
                         stack.push(ret);
                         // println!("{}", stack.len());
-                        ti += 1;
+                        ip += 1;
                     },
                     InstructionType::Syscall4 => {
                         todo!();
@@ -284,15 +297,32 @@ pub fn run(tokens: &[crate::constants::Operator]) -> Result<i32>{
                     },
                     InstructionType::MemUse => {
 
-                        let m = memories.get(&token.addr.unwrap()).unwrap();
+                        let m = memories.get(&op.addr.unwrap()).unwrap();
-                        stack.push(*m);
+                        stack.push(m.id);
-                        ti += 1;
+                        ip += 1;
+                    },
+                    InstructionType::FnCall => {
+                        ret_stack.push(ip);
+                        let f = functions.get(&op.text).unwrap();
+                        ip = f.id;
+                    }
+                    InstructionType::Return => {
+                        ip = ret_stack.pop().unwrap();
+                        ip += 1;
+                    }
+                    InstructionType::ConstUse => {
+                        let a = constants.get(&op.text).unwrap();
+                        
+                        if let Some(i) = a.value_i {
+                            stack.push(i);
+                        } else if let Some(_s) = a.value_s.clone() {
+                            unimplemented!();
+                        }
+                        ip += 1;
                     },
                     InstructionType::CastBool |
                     InstructionType::CastPtr |
                     InstructionType::CastInt |
-                    InstructionType::FnCall |
-                    InstructionType::Return |
                     InstructionType::CastVoid |
                     InstructionType::TypeBool |
                     InstructionType::TypePtr |
@@ -301,9 +331,8 @@ pub fn run(tokens: &[crate::constants::Operator]) -> Result<i32>{
                     InstructionType::TypeStr |
                     InstructionType::TypeAny |
                     InstructionType::Returns |
-                    InstructionType::With => ti += 1,
+                    InstructionType::With => ip += 1,
                     InstructionType::None => unreachable!(),
-                    InstructionType::ConstUse => todo!(),
                 }
 
             }
@@ -314,33 +343,42 @@ pub fn run(tokens: &[crate::constants::Operator]) -> Result<i32>{
                         let a = stack_pop(&mut stack, &pos)?;
                         if a == 0 {
                             // println!("If({ti}) => t: {:?} j: {}", tokens[token.jmp as usize].typ, token.jmp);
-                            ti = token.jmp;
+                            ip = op.jmp;
                         } else {
-                            ti += 1;
+                            ip += 1;
                         }
                     },
                     KeywordType::Else | KeywordType::End => {
-                        ti = token.jmp;
+                        ip = op.jmp;
-                    }
-                    KeywordType::While => {
-                        ti += 1;
                     }
                     KeywordType::Do => {
                         let a = stack.pop().unwrap();
                         if a == 0 {
-                            ti = token.jmp;
+                            ip = op.jmp;
                         } else {
-                            ti += 1;
+                            ip += 1;
                         }
                     }
-                    KeywordType::Memory => {
+                    KeywordType::While | //* exept this one, this one should just skip over
-                        memories.insert(token.addr.unwrap(), token.value);
+                    KeywordType::Memory |
-                        ti += 1;
+                    KeywordType::FunctionDef |
+                    KeywordType::ConstantDef => {
+                        //? Disabled since we now pre run the whole program
+                        // constants.insert(op.text.clone(), Constant { loc: op.loc.clone(), name: op.text.clone(), value_i: Some(op.value), value_s: None, used: false });
+                        ip += 1;
                     },
+                    KeywordType::FunctionDone => {
+                        if let Some(i) = ret_stack.pop() {
+                            ip = i + 1;
+                        } else {
+                            break;
+                        }
+                    },
+                    
+                    KeywordType::FunctionThen  => ip += 1,
+                    KeywordType::Constant |
+                    KeywordType::Function |
                     KeywordType::Include => unreachable!(),
-                    KeywordType::Constant => todo!(),
-                    KeywordType::Function => todo!(),
-                    KeywordType::FunctionDo => todo!(),
                 }
             }
             
@@ -349,4 +387,34 @@ pub fn run(tokens: &[crate::constants::Operator]) -> Result<i32>{
     
 
     Ok(0)
+}
+
+pub struct Defineds {
+    pub memories: HashMap<usize, Memory>,
+    pub functions: HashMap<String, Function>,
+    pub constants: HashMap<String, Constant>
+}
+
+pub fn pre_run(ops: &[Operator]) -> Defineds {
+    let mut defineds = Defineds{
+        memories: HashMap::new(),
+        functions: HashMap::new(),
+        constants: HashMap::new(),
+    };
+    for (ip, op) in ops.iter().enumerate() {
+
+        match op.typ {
+            OpType::Keyword(KeywordType::Memory) => {
+                defineds.memories.insert(op.addr.unwrap(), Memory { size: op.value, loc: op.loc.clone(), id: op.addr.unwrap() });
+            },
+            OpType::Keyword(KeywordType::FunctionDef) => {
+                defineds.functions.insert(op.text.clone(), Function { loc: op.loc.clone(), name: op.text.clone(), id: ip });
+            },
+            OpType::Keyword(KeywordType::ConstantDef) => {
+                defineds.constants.insert(op.text.clone(), Constant { loc: op.loc.clone(), name: op.text.clone(), value_i: Some(op.value), value_s: None, used: false });
+            },
+            _ => ()   
+        }
+    }
+    defineds
 }

src/interpret/linux_x86_64/syscalls.rs

@@ -1,4 +1,4 @@
-
+#[allow(clippy::cast_possible_truncation)]
 pub fn sys_write(sys_n: usize, fd: usize, buff: usize, count: usize, mem: &Vec<u64> ) -> usize {
     let mem = (*mem).clone();
     // println!("{:?}", &mem[buff..(buff + count)]);

src/interpret/mod.rs

@@ -1 +1,27 @@
-pub mod linux_x86_64;
+use crate::constants::Loc;
+
+pub mod linux_x86_64;
+
+#[derive(Debug, Clone)]
+pub struct Constant {
+    pub loc: Loc,
+    pub name: String,
+    pub value_i: Option<usize>,
+    pub value_s: Option<String>,
+    pub used: bool
+    // extern: bool
+}
+
+#[derive(Debug, Clone)]
+pub struct Memory {
+    pub size: usize,
+    pub loc: Loc,
+    pub id: usize
+}
+
+#[derive(Debug, Clone)]
+pub struct Function {
+    pub loc: Loc,
+    pub name: String,
+    pub id: usize
+}

src/lexer.rs

@@ -1,6 +1,5 @@
 
 use crate::{constants::{Token, TokenType}, Args};
-use color_eyre::Result;
 
 fn lex_word(s: String, tok_type: TokenType) -> (TokenType, String) {
     match s {
@@ -89,7 +88,7 @@ fn lex_line(text: &str) -> Vec<(usize, String, TokenType)> {
     tokens
 }
 
-pub fn lex<S: Into<String> + std::marker::Copy>(code: &str, file: S, _args: &Args) -> Result<Vec<Token>> {
+pub fn lex(code: &str, file: &str, _args: &Args) -> Vec<Token> {
     let lines: Vec<(usize, &str)> = code
         .split(['\n', '\r'])
         .enumerate()
@@ -104,7 +103,7 @@ pub fn lex<S: Into<String> + std::marker::Copy>(code: &str, file: S, _args: &Arg
         for (col, tok, tok_type) in lt {
             let (tok_type, tok) = lex_word(tok, tok_type);
             let t = Token{
-                file: file.into(),
+                file: file.to_string(),
                 line: row + 1,
                 col,
                 text: tok,
@@ -123,5 +122,5 @@ pub fn lex<S: Into<String> + std::marker::Copy>(code: &str, file: S, _args: &Arg
     // }
     
 
-    Ok(tokens)
+    tokens
 }

src/main.rs

@@ -1,3 +1,5 @@
+#![allow(clippy::wildcard_imports)]
+#![allow(clippy::too_many_lines)]
 mod constants;
 mod interpret;
 mod util;
@@ -7,18 +9,14 @@ mod lexer;
 mod preprocessor;
 mod typechecker;
 mod precompiler;
-
+mod config;
-use std::fs;
+mod errors;
+use config::*;
+use std::{fs, collections::HashMap};
 
 use clap::Parser;
-
+use color_eyre::Result;
-pub const DEFAULT_OUT_FILE: &str = "a.out";
+use eyre::eyre;
-pub const DEFAULT_INCLUDES: [&str;2] = [
-    "./include",
-    "~/.mclang/include",
-];
-
-
 
 #[derive(Parser, Debug, Clone)]
 #[command(author, version, about, long_about = None)]
@@ -64,31 +62,59 @@ pub struct Args {
 
 }
 
-fn main() {
+impl Args {
+    /// Get optimisation level
+    /// 0 => no optimisations
+    /// 1 => slight optimisations, mostly size ones
+    /// # Errors
+    /// 
+    /// Throws when the opt level is not known
+    pub fn get_opt_level(&self) -> Result<usize>{
+        match self.optimisation.as_str() {
+            "D" | "d" => Ok(0),
+            "0" | "" => Ok(1),
+            o => {
+                error!("Unknown optimisation level {o}");
+                Err(eyre!(""))
+            }
+        }
+    }
+}
+
+fn main() -> Result<()>{
 
 
     let args = Args::parse();
 
     let Ok(code) = fs::read_to_string(&args.in_file) else {
         error!("Failed to read file {}, exiting!", &args.in_file);
-        return;
+        return Ok(());
-        
-    };
-    let Ok(tokens) = lexer::lex(&code, &args.in_file, &args) else {
-        error!("Lexing failed, exiting!");
-        return;
     };
+    
+    let tokens = lexer::lex(&code, args.in_file.as_str(), &args);
 
     
-    let mut parser = parser::Parser::new(tokens);
+    let mut parser = parser::Parser::new(tokens, &args, None);
-    let Ok(tokens) = parser.parse(&args) else {
+    let tokens = match parser.parse(){
-        error!("Parsing failed, exiting!");
+        Ok(t) => t,
-        return;
+        Err(e) => {
+            error!("Parsing failed, exiting!");
+            if crate::DEV_MODE {
+                return Err(e)
+            }
+            return Ok(());
+        }
     };
 
-    let Ok(tokens) = typechecker::typecheck(tokens, &args) else {
+    match typechecker::typecheck(tokens.clone(), &args, None, HashMap::new(), HashMap::new()) {
-        error!("Typechecking failed, exiting!");
+        Ok(_) => (),
-        return;
+        Err(e) => {
+            error!("Typechecking failed, exiting!");
+            if crate::DEV_MODE {
+                return Err(e);
+            }
+            return Ok(());
+        }
     };
 
     let c = if args.compile && args.interpret {

src/parser.rs

@@ -9,14 +9,14 @@ pub fn cross_ref(mut program: Vec<Operator>) -> Result<Vec<Operator>> {
 
     for ip in 0..program.len() {
         let op = &program.clone()[ip];
+        // println!("{op:?}");
         match op.typ {
-            OpType::Keyword(KeywordType::If) | 
+            // OpType::Keyword(KeywordType::FunctionDef) |
-            OpType::Keyword(KeywordType::Function) | 
+            OpType::Keyword(KeywordType::If | KeywordType::While) => {
-            OpType::Keyword(KeywordType::While) => {
                 stack.push(ip);
             }
             OpType::Keyword(KeywordType::Else) => {
-                let if_ip = if let Some(x) = stack.pop() { x } else {
+                let Some(if_ip) = stack.pop() else {
                     lerror!(&op.loc, "Unclosed-if else block");
                     return Err(eyre!("Cross referencing"));
                 };
@@ -29,14 +29,13 @@ pub fn cross_ref(mut program: Vec<Operator>) -> Result<Vec<Operator>> {
                 stack.push(ip);
             },
             OpType::Keyword(KeywordType::End) => {
-                let block_ip = if let Some(block_ip) = stack.pop() { block_ip } else {
+                let Some(block_ip) = stack.pop() else {
                     lerror!(&op.loc, "Unclosed if, if-else, while-do, function, memory, or constant");
                     return Err(eyre!("Cross referencing"));
                 };
 
                 match &program[block_ip].typ {
-                    OpType::Keyword(KeywordType::If) |
+                    OpType::Keyword(KeywordType::If | KeywordType::Else) => {
-                    OpType::Keyword(KeywordType::Else) => {
                         program[block_ip].jmp = ip;
                         program[ip].jmp = ip + 1;
                     }
@@ -45,12 +44,10 @@ pub fn cross_ref(mut program: Vec<Operator>) -> Result<Vec<Operator>> {
                         program[ip].jmp = program[block_ip].jmp;
                         program[block_ip].jmp = ip + 1;
                     }
-                    OpType::Keyword(KeywordType::FunctionDo) => {
+                    OpType::Keyword(KeywordType::FunctionThen) => {
                         program[ip].typ = OpType::Instruction(InstructionType::Return);
                     }
-                    OpType::Keyword(KeywordType::Memory) |
+                    OpType::Keyword(KeywordType::Memory | KeywordType::Constant) => (),
-                    OpType::Keyword(KeywordType::Function) |
-                    OpType::Keyword(KeywordType::Constant) => (),
 
                     a => {
                         println!("{a:?}");
@@ -61,15 +58,11 @@ pub fn cross_ref(mut program: Vec<Operator>) -> Result<Vec<Operator>> {
 
             }
             OpType::Keyword(KeywordType::Do) => {
-                let block_ip = if let Some(x) = stack.pop() { x } else {
+                let Some(block_ip) = stack.pop() else {
                     lerror!(&op.loc, "Unclosed while-do block");
                     return Err(eyre!("Cross referencing"));
                 };
 
-                if program[block_ip].typ == OpType::Keyword(KeywordType::Function) {
-                    program[ip].typ = OpType::Keyword(KeywordType::FunctionDo);
-                }
-
                 program[ip].jmp = block_ip;
                 stack.push(ip);
             }
@@ -78,7 +71,7 @@ pub fn cross_ref(mut program: Vec<Operator>) -> Result<Vec<Operator>> {
 
     }
     if !stack.is_empty() {
-        println!("{:?}", stack);
+        // println!("{:?}", stack);
         lerror!(&program[stack.pop().expect("Empy stack")].clone().loc,"Unclosed block, {:?}", program[stack.pop().expect("Empy stack")].clone());
         return Err(eyre!("Unclosed block"));
     }
@@ -86,18 +79,27 @@ pub fn cross_ref(mut program: Vec<Operator>) -> Result<Vec<Operator>> {
     Ok(program.clone())
 }
 
-pub struct Parser {
+pub struct Parser<'a> {
-    tokens: Vec<Token>
+    tokens: Vec<Token>,
+    pub preprocessor: Preprocessor<'a>,
+    #[allow(dead_code)]
+    args: &'a Args
 }
 
-impl Parser {
+impl<'a> Parser<'a> {
-    pub fn new(file: Vec<Token>) -> Self {
+    pub fn new(file: Vec<Token>, args: &'a Args, p: Option<Preprocessor<'a>>) -> Self {
+        let pre = if let Some(p) = p {p} else {
+            Preprocessor::new(Vec::new(), args)
+        };
+
         Self{
-            tokens: file
+            tokens: file,
+            preprocessor: pre,
+            args
         }
     }
 
-    pub fn parse(&mut self, args: &Args) -> Result<Vec<Operator>> {
+    pub fn parse(&mut self) -> Result<Vec<Operator>> {
         let mut tokens = Vec::new();
 
         for token in &self.tokens {
@@ -134,9 +136,9 @@ impl Parser {
 
 
         }
-
+        self.preprocessor.program = tokens;
-        let t = Preprocessor::new(tokens.clone(), args).preprocess()?.get_ops();
+        let t = self.preprocessor.preprocess()?.get_ops();
-        let t = cross_ref(t.clone())?;
+        let t = cross_ref(t)?;
 
         Ok(t)
     }
@@ -145,12 +147,12 @@ impl Parser {
 
 pub fn lookup_word<P: Deref<Target = Loc>>(s: &str, _pos: P) -> OpType {
     let n = s.parse::<usize>();
-    if let Ok(_) = n {
+    if n.is_ok() {
         return OpType::Instruction(InstructionType::PushInt);
     }
     match s {
         //stack
-        "print" => OpType::Instruction(InstructionType::Print),
+        "_dbg_print" => OpType::Instruction(InstructionType::Print),
         "dup" => OpType::Instruction(InstructionType::Dup),
         "drop" => OpType::Instruction(InstructionType::Drop),
         "rot" => OpType::Instruction(InstructionType::Rot),
@@ -204,6 +206,8 @@ pub fn lookup_word<P: Deref<Target = Loc>>(s: &str, _pos: P) -> OpType {
         "memory" => OpType::Keyword(KeywordType::Memory),
         "const" => OpType::Keyword(KeywordType::Constant),
         "fn" => OpType::Keyword(KeywordType::Function),
+        "then" => OpType::Keyword(KeywordType::FunctionThen),
+        "done" => OpType::Keyword(KeywordType::FunctionDone),
         "return" => OpType::Instruction(InstructionType::Return),
         "returns" => OpType::Instruction(InstructionType::Returns),
         "bool" => OpType::Instruction(InstructionType::TypeBool),

src/precompiler.rs

@@ -135,7 +135,7 @@ pub fn precompile(tokens: &Vec<Operator>) -> Result<Vec<usize>>{
                     }
                 }
             }
-            _ => {
+            OpType::Keyword(_) => {
                 lerror!(&token.loc, "Unsupported precompiler keyword {:?}", token.typ);
                 dbg!(tokens);
                 return Err(eyre!(""));

src/preprocessor.rs

@@ -2,6 +2,7 @@ use std::collections::HashMap;
 use std::ops::Deref;
 use std::path::{PathBuf, Path};
 
+
 use color_eyre::Result;
 use eyre::eyre;
 
@@ -13,19 +14,19 @@ use crate::parser::lookup_word;
 
 
 
-#[derive(Debug)]
+#[derive(Debug, Clone)]
 pub struct Function {
     pub loc: Loc,
     pub name: String
 }
 
-#[derive(Debug)]
+#[derive(Debug, Clone)]
 pub struct Constant {
     pub loc: Loc,
     pub name: String
 }
 
-#[derive(Debug)]
+#[derive(Debug, Clone)]
 pub struct Memory {
     pub loc: Loc,
     pub id: usize
@@ -36,11 +37,12 @@ type Functions = HashMap<String, Function>;
 type Memories = HashMap<String, Memory>;
 type Constants = HashMap<String, Constant>;
 
+#[derive(Debug, Clone)]
 pub struct Preprocessor<'a> {
-    program: Vec<Operator>,
+    pub program: Vec<Operator>,
-    functions: Functions,
+    pub functions: Functions,
-    memories: Memories,
+    pub memories: Memories,
-    constants: Constants,
+    pub constants: Constants,
     args: &'a Args
 }
 
@@ -49,7 +51,7 @@ impl<'a> Preprocessor<'a> {
     pub fn new(prog: Vec<Operator>, args: &'a Args) -> Self {
         Self {
             program: prog,
-            args: args,
+            args,
             functions: HashMap::new(),
             memories: HashMap::new(),
             constants: HashMap::new(),
@@ -88,16 +90,18 @@ impl<'a> Preprocessor<'a> {
                     in_paths.append(&mut crate::DEFAULT_INCLUDES.to_vec().clone().iter().map(|f| (*f).to_string()).collect::<Vec<String>>());
                     
                     let mut include_code = String::new();
-                    
+                    let mut pth = PathBuf::new();
                     if include_path.text.chars().collect::<Vec<char>>()[0] == '.' {
                         let p = Path::new(include_path.loc.0.as_str());
                         let p = p.parent().unwrap();
                         let p = p.join(&include_path.text);
+                        pth = p.clone();
                         include_code = std::fs::read_to_string(p)?;
                     } else {   
                         for path in in_paths {
                             let p = PathBuf::from(path);
                             let p = p.join(&include_path.text);
+                            pth = p.clone();
                             
                             if p.exists() {
                                 include_code = std::fs::read_to_string(p)?;
@@ -110,9 +114,14 @@ impl<'a> Preprocessor<'a> {
                         lerror!(&include_path.loc, "Include file in path '{}' was not found or is empty", include_path.text);
                         return Err(eyre!(""));
                     }
-                    let code = lex(&include_code, &self.args.in_file, &self.args)?;
+                    let a = pth.to_str().unwrap().to_string();
-                    let mut p = parser::Parser::new(code);
+                    let code = lex(&include_code, a.as_str(), self.args);
-                    let mut code = p.parse(self.args)?;
+                    let mut p = parser::Parser::new(code, self.args, Some(self.clone()));
+                    let mut code = p.parse()?;
+
+                    self.set_constants(p.preprocessor.get_constants());
+                    self.set_functions(p.preprocessor.get_functions());
+                    self.set_memories(p.preprocessor.get_memories());
                     code.reverse();
                     rtokens.append(&mut code);
 
@@ -124,9 +133,9 @@ impl<'a> Preprocessor<'a> {
                         return Err(eyre!(""));
                     }
 
-                    let memory_name = rtokens.pop().unwrap();
+                    let name = rtokens.pop().unwrap();
 
-                    self.is_word_available(&memory_name, KeywordType::Function)?;
+                    self.is_word_available(&name, KeywordType::Memory)?;
 
                     let mut code: Vec<Operator> = Vec::new();
 
@@ -157,7 +166,7 @@ impl<'a> Preprocessor<'a> {
                     token.addr = Some(self.memories.len());
                     program.push(token.clone());
 
-                    self.memories.insert(memory_name.text, Memory { loc: token.loc, id: self.memories.len() });
+                    self.memories.insert(name.text, Memory { loc: token.loc, id: self.memories.len() });
 
                 }
                 _ if op_type == OpType::Keyword(KeywordType::Function) => {
@@ -166,47 +175,115 @@ impl<'a> Preprocessor<'a> {
                         return Err(eyre!(""));
                     }
 
-                    let function_name = rtokens.pop().unwrap();
+                    let mut name = rtokens.pop().unwrap();
 
-                    self.is_word_available(&function_name, KeywordType::Function)?;
+                    if let '0'..='9' = name.text.chars().next().unwrap() {
+                        lerror!(&name.loc, "Function name starts with a number which is not allowed");
+                        return Err(eyre!(""));
+                    }
+
+                    // let mut should_warn = false;
+                    for c in name.text.clone().chars() {
+                        match c {
+                            'a'..='z' |
+                            'A'..='Z' |
+                            '0'..='9' |
+                            '-' | '_' => (),
+                            '(' | ')' => {
+                                name.text = name.text.clone().replace('(', "__OP_PAREN__").replace(')', "__CL_PAREN__");
+                            }
+                            _ => {
+                                lerror!(&name.loc, "Function name contains '{c}', which is unsupported");
+                                return Err(eyre!(""));
+                            }
+                        }
+                    }
+                    // if should_warn {
+                        //TODO: add -W option in cli args to enable more warnings
+                        //lwarn!(&function_name.loc, "Function name contains '(' or ')', this character is not supported but will be replaced with '__OP_PAREN__' or '__CL_PAREN__' respectively ");
+                    // }
+
+                    self.is_word_available(&name, KeywordType::Function)?;
                     
                     
-                    self.functions.insert(function_name.text.clone(), Function{
+                    self.functions.insert(name.text.clone(), Function{
-                        loc: function_name.loc.clone(),
+                        loc: name.loc.clone(),
-                        name: function_name.text.clone(),
+                        name: name.text.clone(),
                     });
-                    token.text = function_name.text;
+
+                    let mut fn_def = token.clone();
+                    fn_def.typ = OpType::Keyword(KeywordType::FunctionDef);
+                    fn_def.text = name.text;
                     // println!("{:?}", token);
-                    program.push(token);
+                    program.push(fn_def);
                 }
                 _ if op_type == OpType::Keyword(KeywordType::Constant) => {
                     if rtokens.is_empty() {
                         lerror!(&token.loc, "Constant name not found, expected {} but found nothing", TokenType::Word.human());
                         return Err(eyre!(""));
                     }
+                    // println!("{token:?}");
 
-                    let const_name = rtokens.pop().unwrap();
+                    let mut name = rtokens.pop().unwrap();
+                    // let mut should_warn = false;
 
-                    self.is_word_available(&const_name, KeywordType::Function)?;
+                    if let '0'..='9' = name.text.chars().next().unwrap() {
-                    
+                        lerror!(&name.loc, "Constant name starts with a number which is not allowed");
-                    
+                        return Err(eyre!(""));
-                    self.constants.insert(const_name.text.clone(), Constant{
-                        loc: const_name.loc.clone(),
-                        name: const_name.text.clone(),
-                    });
-                    token.text = const_name.text;
-                    let item = rtokens.pop().unwrap();
-                    if item.tok_typ == TokenType::Int {
-                        token.value = item.value;
                     }
 
-                    if let None = rtokens.pop() {
+                    for c in name.text.clone().chars() {
+                        match c {
+                            'a'..='z' |
+                            'A'..='Z' |
+                            '0'..='9' |
+                            '-' | '_' => (),
+                            '(' | ')' => {
+                                // should_warn = true;
+                                name.text = name.text.clone().replace('(', "__OP_PAREN__").replace(')', "__CL_PAREN__");
+                            }
+                            _ => {
+                                lerror!(&name.loc, "Constant name contains '{c}', which is unsupported");
+                                return Err(eyre!(""));
+                            }
+                        }
+                    }
+                    // if should_warn {
+                        //TODO: add -W option in cli args to enable more warnings
+                        //lwarn!(&name.loc, "Constant name contains '(' or ')', this character is not supported but will be replaced with '__OP_PAREN__' or '__CL_PAREN__' respectively ");
+                    // }
+                    
+                    self.is_word_available(&name, KeywordType::Constant)?;
+                    
+                    
+                    self.constants.insert(name.text.clone(), Constant{
+                        loc: name.loc.clone(),
+                        name: name.text.clone(),
+                    });
+
+                    // println!("{:?}", self.constants);
+
+                    let mut const_def = token.clone();
+                    const_def.typ = OpType::Keyword(KeywordType::ConstantDef);
+                    const_def.text = name.text;
+
+                    let item = rtokens.pop().unwrap();
+                    if item.tok_typ == TokenType::Int {
+                        const_def.value = item.value;
+                    } else {
+                        lerror!(&token.loc, "For now only {:?} is allowed in constants", TokenType::Int);
+                        return Err(eyre!(""));
+                    }
+
+                    let posibly_end = rtokens.pop();
+                    // println!("end: {posibly_end:?}");
+                    if posibly_end.is_none() || posibly_end.unwrap().typ != OpType::Keyword(KeywordType::End) {
                         lerror!(&token.loc, "Constant was not closed with an 'end' instruction, expected 'end' but found nothing");
                         return Err(eyre!(""));
                     }
                     // token.value = 
 
-                    program.push(token);
+                    program.push(const_def);
                 }  
 
                 _ => {
@@ -216,14 +293,18 @@ impl<'a> Preprocessor<'a> {
             }
         }
         self.program = program;
-        
         // println!("has do tokens: {:?}", self.program.iter().map(|t| if t.typ == OpType::Keyword(KeywordType::Do) {Some(t)} else {None} ).collect::<Vec<Option<&Operator>>>());
         //* Feel free to fix this horrifying shit
         //* i wanna kms
         let mut times = 0;
         // dbg!(program.clone());
         while self.program.iter().map(|f| {
-            if f.tok_typ == TokenType::Word && f.typ != OpType::Instruction(InstructionType::FnCall) && f.typ != OpType::Instruction(InstructionType::MemUse)  && f.typ != OpType::Keyword(KeywordType::Function) && f.typ != OpType::Keyword(KeywordType::Constant) && f.typ != OpType::Instruction(InstructionType::ConstUse) {
+            if f.tok_typ == TokenType::Word && 
+                f.typ != OpType::Instruction(InstructionType::FnCall) && 
+                f.typ != OpType::Instruction(InstructionType::MemUse) &&
+                f.typ != OpType::Keyword(KeywordType::FunctionDef) &&
+                f.typ != OpType::Keyword(KeywordType::ConstantDef) &&
+                f.typ != OpType::Instruction(InstructionType::ConstUse) {
                 lookup_word(&f.text, &f.loc)
             } else {
                 OpType::Instruction(InstructionType::PushInt) // i hate myself, this is a randomly picked optype so its happy and works
@@ -238,7 +319,6 @@ impl<'a> Preprocessor<'a> {
             self.expand()?;
             times += 1;
         }
-        
         Ok(self)
     }
 
@@ -251,7 +331,7 @@ impl<'a> Preprocessor<'a> {
         while !rtokens.is_empty() {
             let op = rtokens.pop().unwrap();
             let op_type = op.typ.clone();
-            if op.tok_typ.clone() == TokenType::Word {
+            if op.tok_typ == TokenType::Word {
                 match op_type {
                     OpType::Instruction(InstructionType::None) => {
                         let m = self.functions.get(&op.text);
@@ -299,7 +379,7 @@ impl<'a> Preprocessor<'a> {
 
         self.program = program;
         // println!("{:#?}", self.program);
-        println!("{:?}", self.program.last().unwrap());
+        // println!("{:?}", self.program.last().unwrap());
         Ok(())
     }
 
@@ -318,47 +398,78 @@ impl<'a> Preprocessor<'a> {
         }
         
         if word.tok_typ != TokenType::Word {
-            lerror!(&word.loc, "Bad Function name, expected {} but found {}", TokenType::Word.human(), word.typ.human());
+            lerror!(&word.loc, "Bad {typ:?}, expected {} but found {}", TokenType::Word.human(), word.typ.human());
+            if crate::DEV_MODE {println!("{word:?}")}
+            return Err(eyre!(""));
+        }
+
+        let w = lookup_word(&word.text, &word.loc);
+        if w != OpType::Instruction(InstructionType::None) {
+            lerror!(&word.loc, "Bad {typ:?}, {typ:?} definition cannot be builtin word, got {:?}", word.text);
+            if crate::DEV_MODE {println!("{word:?}")}
             return Err(eyre!(""));
         }
 
         let m = self.memories.get(&word.text);
         if let Some(m) = m {
-            if typ != KeywordType::Memory {
+            if typ == KeywordType::Memory {
-                lerror!(&word.loc, "{typ:?} cannot replace memory, got {}", word.text);
-                linfo!(&m.loc, "first definition here"); 
-                return Err(eyre!(""));
-            } else {
                 lerror!(&word.loc, "Memories cannot be redefined, got {}", word.text);
                 linfo!(&m.loc, "first definition here"); 
+                if crate::DEV_MODE {println!("{word:?}")}
                 return Err(eyre!(""));
             }
+            lerror!(&word.loc, "{typ:?} cannot replace memory, got {}", word.text);
+            linfo!(&m.loc, "first definition here"); 
+            if crate::DEV_MODE {println!("{word:?}")}
+            return Err(eyre!(""));
         }
         let f = self.functions.get(&word.text);
         if let Some(f) = f {
-            if typ != KeywordType::Function {
+            if typ == KeywordType::Function {
-                lerror!(&word.loc, "{typ:?} cannot replace function, got {}", word.text);
-                linfo!(&f.loc, "first definition here"); 
-                return Err(eyre!(""));
-            } else {
                 lerror!(&word.loc, "Functions cannot be redefined, got {}", word.text);
                 linfo!(&f.loc, "first definition here"); 
+                if crate::DEV_MODE {println!("{word:?}")}
                 return Err(eyre!(""));
             }
+            lerror!(&word.loc, "{typ:?} cannot replace function, got {}", word.text);
+            linfo!(&f.loc, "first definition here"); 
+            if crate::DEV_MODE {println!("{word:?}")}
+            return Err(eyre!(""));
         }
         let c = self.constants.get(&word.text);
         if let Some(c) = c {
-            if typ != KeywordType::Constant {
+            if typ == KeywordType::Constant {
-                lerror!(&word.loc, "{typ:?} cannot replace constant, got {}", word.text);
-                linfo!(&c.loc, "first definition here"); 
-                return Err(eyre!(""));
-            } else {
                 lerror!(&word.loc, "Constants cannot be redefined, got {}", word.text);
                 linfo!(&c.loc, "first definition here"); 
+                if crate::DEV_MODE {println!("{word:?}")}
                 return Err(eyre!(""));
             }
+            lerror!(&word.loc, "{typ:?} cannot replace constant, got {}", word.text);
+            linfo!(&c.loc, "first definition here"); 
+            if crate::DEV_MODE {println!("{word:?}")}
+            return Err(eyre!(""));
         }
 
         Ok(true)
     }
+
+    pub fn set_functions(&mut self, f: Functions) {
+        self.functions = f;
+    }
+    pub fn set_constants(&mut self, f: Constants) {
+        self.constants = f;
+    }
+    pub fn set_memories(&mut self, f: Memories) {
+        self.memories = f;
+    }
+
+    pub fn get_functions(&mut self) -> Functions {
+        self.functions.clone()
+    }
+    pub fn get_constants(&mut self) -> Constants {
+        self.constants.clone()
+    }
+    pub fn get_memories(&mut self) -> Memories{
+        self.memories.clone()
+    }
 }

src/typechecker.rs

@@ -1,54 +1,68 @@
 use std::collections::HashMap;
 
-use crate::{constants::{Operator, Types, OpType, KeywordType, InstructionType}, Args, lerror, warn, note};
+use crate::{constants::{Operator, Types, OpType, KeywordType, InstructionType, Loc}, Args, lerror, warn};
 use color_eyre::Result;
 use eyre::eyre;
 
+#[allow(dead_code)]
 #[derive(Debug, Clone)]
-struct Function {
+pub struct Function {
+    loc: Loc,
     args: Vec<Types>,
     returns: Vec<Types>,
 }
+
+#[derive(Debug, Clone)]
+pub struct Constant {
+    #[allow(dead_code)]
+    loc: Loc,
+    types: Vec<Types>,
+}
+
 impl Function {
+    #[allow(dead_code)]
     pub fn default() -> Self {
         Self {
             args: Vec::new(),
             returns: Vec::new(),
+            loc: (String::new(), 0, 0)
         }
     }
 }
 
-pub fn typecheck(ops: Vec<Operator>, args: &Args) -> Result<Vec<Operator>>{
+type Functions = HashMap<String, Function>;
+type Constants = HashMap<String, Constant>;
+
+pub fn typecheck(ops: Vec<Operator>, args: &Args, init_types: Option<Vec<Types>>,  funcs: HashMap<String, Function>, consts:  HashMap<String, Constant>) -> Result<(Vec<Types>, Functions, Constants)>{
     if args.unsaf {
         if !args.quiet {
             warn!("Unsafe mode enabled, disabling typechecker, goodluck");
         }
-        return Ok(ops.to_vec());
+        return Ok((Vec::new(), HashMap::new(), HashMap::new()));
     }
     
-    let mut functions: HashMap<String, Function> = HashMap::new();
+    let mut functions: HashMap<String, Function> = funcs;
-    // let mut in_function: (String, Function) = (String::new(), Function::default());
+    let mut constants: HashMap<String, Constant> = consts;
-    let mut stack: Vec<Types> = Vec::new();
+    // let mut in_function: (String, Function, Loc) = (String::new(), Function::default(), (String::new(), 0, 0));
+    let mut stack: Vec<Types> = if let Some(i) = init_types {i} else {Vec::new()};
     let mut stack_snapshots: Vec<Vec<Types>> = Vec::new();
-    let mut rtokens = ops.clone();
+    let mut rtokens = ops;
     rtokens.reverse();
     // println!("{:#?}", ops);
     while !rtokens.is_empty() {
         let op = rtokens.pop().unwrap();
-        println!("{:?}", stack.clone());
+        // println!("{:?}", stack.clone());
         // println!("{:?}", op);
         // println!("{}", ops.len());
         match op.typ.clone() {
             OpType::Keyword(keyword) => {
                 match keyword {
-                    KeywordType::If => {
+                    KeywordType::If |
-                        stack_pop(&mut stack, &op, &[Types::Bool])?;
-                    },
                     KeywordType::Do => {
                         stack_pop(&mut stack, &op, &[Types::Bool])?;
                     },
 
-                    KeywordType::Function => {
+                    KeywordType::FunctionDef => {
                         let name = op.text.clone();
 
                         if let Some(p) = rtokens.pop() {
@@ -66,6 +80,7 @@ pub fn typecheck(ops: Vec<Operator>, args: &Args) -> Result<Vec<Operator>>{
                         let mut func = Function {
                             args: Vec::new(),
                             returns: Vec::new(),
+                            loc: op.loc
                         };
                         let mut return_args = false;
                         while p.as_ref().is_some() {
@@ -73,17 +88,15 @@ pub fn typecheck(ops: Vec<Operator>, args: &Args) -> Result<Vec<Operator>>{
                             if op.typ == OpType::Instruction(InstructionType::TypeBool) ||
                                 op.typ == OpType::Instruction(InstructionType::TypeInt) ||
                                 op.typ == OpType::Instruction(InstructionType::TypePtr) ||
+                                op.typ == OpType::Instruction(InstructionType::TypeAny) ||
                                 op.typ == OpType::Instruction(InstructionType::TypeVoid) {
                                     let t = if op.typ == OpType::Instruction(InstructionType::TypeInt) {
                                         Types::Int
-                                    } else 
+                                    } else if op.typ == OpType::Instruction(InstructionType::TypeBool) {
-                                    if op.typ == OpType::Instruction(InstructionType::TypeBool) {
                                         Types::Bool
-                                    } else
+                                    } else if op.typ == OpType::Instruction(InstructionType::TypePtr) {
-                                    if op.typ == OpType::Instruction(InstructionType::TypePtr) {
                                         Types::Ptr
-                                    } else 
+                                    } else if op.typ == OpType::Instruction(InstructionType::TypeVoid) {
-                                    if op.typ == OpType::Instruction(InstructionType::TypeVoid) {
                                         if return_args {
                                             func.returns = vec![Types::Void];
                                         } else {
@@ -92,11 +105,9 @@ pub fn typecheck(ops: Vec<Operator>, args: &Args) -> Result<Vec<Operator>>{
                                             continue;
                                         }
                                         Types::Void
-                                    } else
+                                    } else if op.typ == OpType::Instruction(InstructionType::TypeStr) {
-                                    if op.typ == OpType::Instruction(InstructionType::TypeStr) {
                                         Types::Str
-                                    } else
+                                    } else if op.typ == OpType::Instruction(InstructionType::TypeAny) {
-                                    if op.typ == OpType::Instruction(InstructionType::TypeAny) {
                                         Types::Any
                                     } else {
                                         panic!()
@@ -113,17 +124,40 @@ pub fn typecheck(ops: Vec<Operator>, args: &Args) -> Result<Vec<Operator>>{
                                 return_args = true;
                             }
 
-                            if op.typ == OpType::Keyword(KeywordType::FunctionDo) {
+                            if op.typ == OpType::Keyword(KeywordType::FunctionThen) {
                                 break;
                             }
                             p = rtokens.pop();
                         };
-                        functions.insert(name.clone(), func.clone());
 
-                        // if name == "main" {
+
-                        //     in_function = (name, func.clone());
+                        let mut code: Vec<Operator> = Vec::new();
-                        // }
+
-                        if func.args != vec![Types::Void] {
+                        while !rtokens.is_empty() {
+                            let op = rtokens.pop().unwrap();
+
+                            if op.typ == OpType::Keyword(KeywordType::FunctionDone) {
+                                break;
+                            }
+                            code.push(op);
+                        }
+                        let ts = if func.args.clone() == vec![Types::Void] {
+                            Vec::new()
+                        } else {
+                            func.args.clone()
+                        };
+
+                        if ts.contains(&Types::Void) {
+                            continue;
+                        }
+                        functions.insert(name.clone(), func.clone());
+                        let (ret_typs, _, _) = typecheck(code, args, Some(ts.clone()), functions.clone(), constants.clone())?;
+                        if ret_typs != func.returns && !func.returns.contains(&Types::Void){
+                            lerror!(&func.loc, "Expected {:?}, but got {:?}", func.returns, ret_typs);
+                            return Err(eyre!(""))
+                        }
+
+                        if !func.args.contains(&Types::Void) {
                             stack.append(&mut func.args);
                         }
                         stack_snapshots.push(stack.clone());
@@ -135,7 +169,14 @@ pub fn typecheck(ops: Vec<Operator>, args: &Args) -> Result<Vec<Operator>>{
                     KeywordType::Include |
                     KeywordType::Constant |
                     KeywordType::Memory => (),
-                    KeywordType::FunctionDo => (),
+                    KeywordType::ConstantDef => {
+                        // println!("defined constant");
+                        constants.insert(op.text, Constant { loc: op.loc.clone(), types: vec![Types::Int] });
+                        
+                    },
+                    KeywordType::FunctionThen |
+                    KeywordType::FunctionDone |
+                    KeywordType::Function => unreachable!(),
                 }
             },
             OpType::Instruction(instruction) => {
@@ -179,97 +220,41 @@ pub fn typecheck(ops: Vec<Operator>, args: &Args) -> Result<Vec<Operator>>{
                         stack.push(a);
                         stack.push(b);
                     },
-                    InstructionType::Minus => {
+                    InstructionType::Minus |
+                    InstructionType::Plus |
+                    InstructionType::Band |
+                    InstructionType::Bor |
+                    InstructionType::Shr |
+                    InstructionType::Shl |
+                    InstructionType::Mul => {
                         stack_pop(&mut stack, &op, &[Types::Int])?;
                         stack_pop(&mut stack, &op, &[Types::Int])?;
                         stack.push(Types::Int);
                     },
-                    InstructionType::Plus => {
+                    InstructionType::Equals |
-                        stack_pop(&mut stack, &op, &[Types::Int])?;
+                    InstructionType::Gt |
-                        stack_pop(&mut stack, &op, &[Types::Int])?;
+                    InstructionType::Lt |
-                        stack.push(Types::Int);
+                    InstructionType::Ge |
-                    },
+                    InstructionType::Le |
-                    InstructionType::Equals => {
-                        stack_pop(&mut stack, &op, &[Types::Int])?;
-                        stack_pop(&mut stack, &op, &[Types::Int])?;
-                        stack.push(Types::Bool);
-                    },
-                    InstructionType::Gt => {
-                        stack_pop(&mut stack, &op, &[Types::Int])?;
-                        stack_pop(&mut stack, &op, &[Types::Int])?;
-                        stack.push(Types::Bool);
-                    },
-                    InstructionType::Lt => {
-                        stack_pop(&mut stack, &op, &[Types::Int])?;
-                        stack_pop(&mut stack, &op, &[Types::Int])?;
-                        stack.push(Types::Bool);
-                    },
-                    InstructionType::Ge => {
-                        stack_pop(&mut stack, &op, &[Types::Int])?;
-                        stack_pop(&mut stack, &op, &[Types::Int])?;
-                        stack.push(Types::Bool);
-                    },
-                    InstructionType::Le => {
-                        stack_pop(&mut stack, &op, &[Types::Int])?;
-                        stack_pop(&mut stack, &op, &[Types::Int])?;
-                        stack.push(Types::Bool);
-                    },
                     InstructionType::NotEquals => {
                         stack_pop(&mut stack, &op, &[Types::Int])?;
                         stack_pop(&mut stack, &op, &[Types::Int])?;
                         stack.push(Types::Bool);
                     },
-                    InstructionType::Band => {
-                        stack_pop(&mut stack, &op, &[Types::Int])?;
-                        stack_pop(&mut stack, &op, &[Types::Int])?;
-                        stack.push(Types::Int);
-                    },
-                    InstructionType::Bor => {
-                        stack_pop(&mut stack, &op, &[Types::Int])?;
-                        stack_pop(&mut stack, &op, &[Types::Int])?;
-                        stack.push(Types::Int);
-                    },
-                    InstructionType::Shr => {
-                        stack_pop(&mut stack, &op, &[Types::Int])?;
-                        stack_pop(&mut stack, &op, &[Types::Int])?;
-                        stack.push(Types::Int);
-                    },
-                    InstructionType::Shl => {
-                        stack_pop(&mut stack, &op, &[Types::Int])?;
-                        stack_pop(&mut stack, &op, &[Types::Int])?;
-                        stack.push(Types::Int);
-                    },
                     InstructionType::DivMod => {
                         stack_pop(&mut stack, &op, &[Types::Int])?;
                         stack_pop(&mut stack, &op, &[Types::Int])?;
                         stack.push(Types::Int);
                         stack.push(Types::Int);
                     },
-                    InstructionType::Mul => {
+                    InstructionType::Load8 |
-                        stack_pop(&mut stack, &op, &[Types::Int])?;
+                    InstructionType::Load32 |
-                        stack_pop(&mut stack, &op, &[Types::Int])?;
-                        stack.push(Types::Int);
-                    },
-                    InstructionType::Load8 => {
-                        stack_pop(&mut stack, &op, &[Types::Ptr])?;
-                        stack.push(Types::Int);
-                    },
-                    InstructionType::Store8 => {
-                        stack_pop(&mut stack, &op, &[Types::Int])?;
-                        stack_pop(&mut stack, &op, &[Types::Ptr])?;
-                    },
-                    InstructionType::Load32 => {
-                        stack_pop(&mut stack, &op, &[Types::Ptr])?;
-                        stack.push(Types::Int);
-                    },
-                    InstructionType::Store32 => {
-                        stack_pop(&mut stack, &op, &[Types::Int])?;
-                        stack_pop(&mut stack, &op, &[Types::Ptr])?;
-                    },
                     InstructionType::Load64 => {
                         stack_pop(&mut stack, &op, &[Types::Ptr])?;
                         stack.push(Types::Int);
                     },
+                    InstructionType::Store8 |
+                    InstructionType::Store32 |
                     InstructionType::Store64 => {
                         stack_pop(&mut stack, &op, &[Types::Int])?;
                         stack_pop(&mut stack, &op, &[Types::Ptr])?;
@@ -345,7 +330,9 @@ pub fn typecheck(ops: Vec<Operator>, args: &Args) -> Result<Vec<Operator>>{
                     InstructionType::FnCall  => {
                         stack_snapshots.push(stack.clone());
                         
-                        let f = functions.get(&op.text).unwrap();
+                        let f = functions.get(&op.text).unwrap().clone();
+
+                        // in_function = (op.text.clone(), f.clone(), op.loc.clone());
 
                         let mut s = stack.clone();
                         let mut a = f.args.clone();
@@ -366,24 +353,8 @@ pub fn typecheck(ops: Vec<Operator>, args: &Args) -> Result<Vec<Operator>>{
 
                         
                     }
-                    InstructionType::Return => {
+                    InstructionType::Return |
-                        let snap = stack_snapshots.pop().unwrap();
+                    InstructionType::None |
-                        // snap.append(&mut f.returns.clone());
-                        let mut st = stack.clone();
-                        for s in snap{
-                            if let Some(sn) = st.pop(){
-                                if s != sn {
-                                    lerror!(&op.loc, "Expected {:?}, but got {:?}", s, sn);
-                                    return Err(eyre!(""));
-                                }
-                            } else {
-                                lerror!(&op.loc, "Expected {:?}, but got nothing", s);
-                                return Err(eyre!(""));
-                            }
-                        }
-                    }
-                    InstructionType::None => {},
-
                     InstructionType::TypeBool |
                     InstructionType::TypePtr |
                     InstructionType::TypeInt |
@@ -392,7 +363,11 @@ pub fn typecheck(ops: Vec<Operator>, args: &Args) -> Result<Vec<Operator>>{
                     InstructionType::TypeStr |
                     InstructionType::Returns |
                     InstructionType::With => (),
-                    InstructionType::ConstUse => todo!(),
+                    InstructionType::ConstUse => {
+                        // println!("{constants:?}");
+                        let mut c = constants.get(&op.text).unwrap().clone();
+                        stack.append(&mut c.types);
+                    },
                 }
             },
             
@@ -401,7 +376,7 @@ pub fn typecheck(ops: Vec<Operator>, args: &Args) -> Result<Vec<Operator>>{
         
     }
     
-    Ok(ops.clone())
+    Ok((stack, functions, constants))
 }
 
 

src/util.rs

@@ -66,6 +66,21 @@ pub mod logger {
     pub fn lnote<P: Deref<Target = Loc>>(loc: P, msg: &str) {
         println!("{f}:{r}:{c} {blue}note{rs}: {msg}", blue=color::FG_BLUE, rs=color::RESET, f=loc.0, r=loc.1, c=loc.2);
     }
+
+    pub fn help(msg: &str) {
+        println!("{blue}help{r}: {msg}", blue=color::FG_CYAN, r=color::RESET);
+    }
+
+    pub fn code_block(code: &str) -> String {
+        let mut ret = String::new();
+        let lines = code.lines();
+
+        for (i, line) in lines.enumerate() {
+            use std::fmt::Write;
+            writeln!(ret, "{}{} | {}{}",color::FG_BLUE, i + 1, line, color::RESET).unwrap();
+        }
+        ret
+    }
     pub mod macros {
         #[macro_export] macro_rules! error { ($($arg:tt)*) => { $crate::util::logger::error(std::format_args!($($arg)*).to_string().as_str()) }; }
         #[macro_export] macro_rules! warn { ($($arg:tt)*) => {  $crate::util::logger::warn( std::format_args!($($arg)*).to_string().as_str()) }; }
@@ -76,6 +91,9 @@ pub mod logger {
         #[macro_export] macro_rules! lwarn { ($dst:expr, $($arg:tt)*) => {  $crate::util::logger::lwarn($dst, std::format_args!($($arg)*).to_string().as_str()) }; }
         #[macro_export] macro_rules! linfo { ($dst:expr, $($arg:tt)*) => {  $crate::util::logger::linfo($dst, std::format_args!($($arg)*).to_string().as_str()) }; }
         #[macro_export] macro_rules! lnote { ($dst:expr, $($arg:tt)*) => {  $crate::util::logger::lnote($dst, std::format_args!($($arg)*).to_string().as_str()) }; }
+
+        #[macro_export] macro_rules! help { ($($arg:tt)*) => {  $crate::util::logger::help( std::format_args!($($arg)*).to_string().as_str()) }; }
+        #[macro_export] macro_rules! code_block { ($($arg:tt)*) => {  $crate::util::logger::code_block( std::format_args!($($arg)*).to_string().as_str()) }; }
     }
 
 }

test.mcl

@@ -1,5 +1,5 @@
 include "std.mcl"
 
-fn main with void returns void do
+fn main with void returns void then
-    69 putd
+    "hi\n" puts
-end
+done