something

include/linux/io.mcl

@@ -1,14 +1,14 @@
 
-fn fwrite with int ptr int returns int then
+fn fwrite with u64 ptr u64 returns u64 then
     SYS_write syscall3
 done
 
 
 
-fn puts with int ptr int returns int then
+fn puts with u64 ptr u64 returns u64 then
     STDOUT fwrite drop
 done
 
-fn eputs with int ptr int returns int then
+fn eputs with u64 ptr u64 returns u64 then
     STDERR fwrite drop
 done

src/compiler/x86_64_linux_nasm/mod.rs

@@ -3,7 +3,7 @@ mod utils;
 use std::path::PathBuf;
 use std::{fs::File, io::BufWriter, path::Path};
 use std::io::Write;
-use crate::types::ast::{AstNode, Function, Module, Program};
+use crate::types::ast::{AstNode, EscIdent, Function, MemSize, Module, Program};
 use crate::types::token::{InstructionType, Token, TokenType};
 
 use super::utils::run_cmd;
@@ -14,7 +14,8 @@ use super::Compiler;
 
 pub struct X86_64LinuxNasmCompiler {
     strings: Vec<String>,
-    func_mem_i: Vec<usize>,
+    // func_mem_i: Vec<usize>,
+    // func_mem_list: HashMap<String, usize>,
     if_i: usize,
     while_i: usize,
     used_consts: Vec<String>
@@ -272,13 +273,10 @@ impl X86_64LinuxNasmCompiler {
                     InstructionType::CastPtr |
                     InstructionType::CastInt |
                     InstructionType::CastVoid => (), //? Possibly have a use for this
-                    InstructionType::TypeBool |
-                    InstructionType::TypePtr |
-                    InstructionType::TypeInt |
-                    InstructionType::TypeVoid |
-                    InstructionType::TypeAny |
                     InstructionType::FnCall |
                     InstructionType::MemUse |
+                    InstructionType::StructPath(_) |
+                    InstructionType::StructItem(_) |
                     InstructionType::ConstUse => unreachable!(),
                     InstructionType::Return => {
                         writeln!(fd, "    sub rbp, 8")?;
@@ -289,29 +287,26 @@ impl X86_64LinuxNasmCompiler {
                 }
             },
             TokenType::Keyword(_) |
+            TokenType::Type(_) |
             TokenType::Unknown(_) => unreachable!(),
         }
         Ok(())
     }
 
     fn handle_module(&mut self, fd: &mut BufWriter<File>, prog: &Program, module: &Module) -> anyhow::Result<()> {
-        writeln!(fd, "; {} Module {} START", module.path.join("::"), module.ident)?;
+        writeln!(fd, "; {} Module START", module.path.join("::"))?;
         self.handle_ast_list(fd, prog, module.body.clone())?;
-        writeln!(fd, "; {} Module {} END", module.path.join("::"), module.ident)?;
+        writeln!(fd, "; {} Module END", module.path.join("::"))?;
         Ok(())
     }
 
     fn handle_function(&mut self, fd: &mut BufWriter<File>, prog: &Program, func: &Function) -> anyhow::Result<()> {
-        writeln!(fd, "{f}: ; fn {f}", f=func.ident)?;
+        writeln!(fd, "{f}: ; fn {f}", f=func.get_ident_escaped())?;
-        writeln!(fd, "    pop rbx")?;
+        writeln!(fd, "    fn_setup")?;
-        writeln!(fd, "    mov qword [rbp], rbx")?;
-        writeln!(fd, "    add rbp, 8")?;
         
         self.handle_ast_list(fd, prog, func.body.clone())?;
         
-        writeln!(fd, "    sub rbp, 8")?;
+        writeln!(fd, "    fn_cleanup")?;
-        writeln!(fd, "    mov rbx, qword [rbp]")?;
-        writeln!(fd, "    push rbx")?;
         writeln!(fd, "    ret")?;
         Ok(())
     }
@@ -355,21 +350,27 @@ impl X86_64LinuxNasmCompiler {
                     writeln!(fd, "; WHILE({id}) END")?;
                 },
                 AstNode::Module(m) => self.handle_module(fd, prog, m)?,
-                AstNode::Memory(m) => {
+                AstNode::Memory(_) => {
-                    if !m.statc {
+                    //? Possibly allow stack based allocation somehow
-                        todo!()
+                    // if !m.statc {
-                    }
+                    //     todo!()
+                    // }
                 },
-                AstNode::MemUse(_) => {
+                AstNode::MemUse(m) => {
-                    
+                    let tmp = if let Some(disp) = m.disp {
+                        format!("+{disp}")
+                    } else {
+                        String::new()
+                    };
+                    writeln!(fd, "    push m_{}{}", m.get_ident_escaped(), tmp)?;
                 },
                 AstNode::ConstUse(c) => {
-                    self.used_consts.push(c.ident.clone());
+                    self.used_consts.push(c.get_ident_escaped());
-                    writeln!(fd, "    mov rax, qword [c_{}]", c.ident)?;
+                    writeln!(fd, "    mov rax, qword [c_{}]", c.get_ident_escaped())?;
                     writeln!(fd, "    push rax")?;
                 },
                 AstNode::FnCall(f)=> {
-                    writeln!(fd, "    call {f} ; FUNCTIONCALL({f:?})", f=f.ident)?;
+                    writeln!(fd, "    call {f} ; FUNCTIONCALL({f:?})", f=f.get_ident_escaped())?;
                 },
                 AstNode::Block(b)=> {
                     writeln!(fd, "; BLOCK({}) START", b.comment)?;
@@ -381,6 +382,11 @@ impl X86_64LinuxNasmCompiler {
                 AstNode::Str(_, _) |
                 AstNode::CStr(_, _) |
                 AstNode::Char(_, _) => unreachable!(),
+                AstNode::StructDef(_) => (),
+                AstNode::StructDispPush { disp, ident, .. } => {
+                    writeln!(fd, "    mov rax, {} ; STRUCTDISPPUSH({})", disp, ident)?;
+                    writeln!(fd, "    push rax")?;
+                },
             }
         }
         Ok(())
@@ -395,6 +401,8 @@ impl Compiler for X86_64LinuxNasmCompiler {
             used_consts: Vec::new(),
             if_i: 0,
             while_i: 0,
+            // func_mem_i: Vec::new(),
+            // func_mem_list: HashMap::new(),
         }
     }
 
@@ -402,6 +410,18 @@ impl Compiler for X86_64LinuxNasmCompiler {
 
         writeln!(fd, "BITS 64")?;
         writeln!(fd, "segment .text")?;
+
+        writeln!(fd, "%macro fn_setup 0")?;
+        writeln!(fd, "    pop rbx")?;
+        writeln!(fd, "    mov qword [rbp], rbx")?;
+        writeln!(fd, "    add rbp, 8")?;
+        writeln!(fd, "%endmacro")?;
+        writeln!(fd, "%macro fn_cleanup 0")?;
+        writeln!(fd, "    sub rbp, 8")?;
+        writeln!(fd, "    mov rbx, qword [rbp]")?;
+        writeln!(fd, "    push rbx")?;
+        writeln!(fd, "%endmacro")?;
+
         writeln!(fd, "{}", utils::DBG_PRINT)?;
         writeln!(fd, "global _start")?;
         writeln!(fd, "_start:")?; 
@@ -425,22 +445,22 @@ impl Compiler for X86_64LinuxNasmCompiler {
         writeln!(fd, "segment .data")?;
         for (_, v) in prog.constants.iter() {
 
-            if !self.used_consts.contains(&v.ident) {
+            if !self.used_consts.contains(&v.get_ident_escaped()) {
                 continue;
             }
 
             match Box::leak(v.value.clone()) {
                 AstNode::Int(_, val) => {
-                    writeln!(fd, "c_{}: dq {}", v.ident, val)?;
+                    writeln!(fd, "    c_{}: dq {}", v.get_ident_escaped(), val)?;
                 }
                 AstNode::Str(_, val) |
                 AstNode::CStr(_, val) => {
                     let s_chars = val.chars().map(|c| (c as u32).to_string()).collect::<Vec<String>>();
                     let s_list = s_chars.join(",");
-                    writeln!(fd, "c_{}: db {} ; {}", v.ident, s_list, val.escape_debug())?;
+                    writeln!(fd, "    c_{}: db {} ; {}", v.get_ident_escaped(), s_list, val.escape_debug())?;
                 }
                 AstNode::Char(_, val) => {
-                    writeln!(fd, "c_{}: db {} ; '{}'", v.ident, *val as u8, val)?;
+                    writeln!(fd, "    c_{}: db {} ; '{}'", v.get_ident_escaped(), *val as u8, val)?;
                 }
                 c => panic!("{c:?}")
             };
@@ -449,12 +469,21 @@ impl Compiler for X86_64LinuxNasmCompiler {
         for (i, s) in self.strings.iter().enumerate() {
             let s_chars = s.chars().map(|c| (c as u32).to_string()).collect::<Vec<String>>();
             let s_list = s_chars.join(",");
-            writeln!(fd, "str_{i}: db {} ; STRDEF({})", s_list, s.escape_debug())?;
+            writeln!(fd, "    str_{i}: db {} ; STRDEF({})", s_list, s.escape_debug())?;
         }
         writeln!(fd, "segment .bss")?;
-        writeln!(fd, "ret_stack: resq 256")?;
+        writeln!(fd, "    ret_stack: resq 256")?;
 
-        //TODO: Memories
+        for (_, v) in &prog.memories {
+            match &v.size {
+                MemSize::Size(s) => {
+                    writeln!(fd, "    m_{}: resb {}", v.get_ident_escaped(), s)?;
+                },
+                MemSize::Type(tt) => {
+                    writeln!(fd, "    m_{}: resb {} ; {:?}", v.get_ident_escaped(), tt.get_size(), tt)?;
+                },
+            }
+        }
         
 
         Ok(())

src/lexer/mod.rs

@@ -1,7 +1,7 @@
 use std::path::Path;
 use anyhow::bail;
 
-use crate::{error, types::{common::Loc, token::{InstructionType, KeywordType, Token, TokenType}}};
+use crate::{error, types::{common::Loc, token::{InstructionType, KeywordType, Token, TokenType, TypeType}}};
 
 
 
@@ -135,6 +135,88 @@ impl Lexer {
                     self.tokens.push(Token::new(TokenType::Instruction(InstructionType::PushStr(str)), self.loc(), buf.clone()));
                     buf.clear();
                 }
+                ':' if chars.get(idx + 1) == Some(&':') => {
+                    let mut p_buf = vec![buf.clone()];
+                    buf.clear();
+                    idx += 2; // skip ::
+                    self.loc.col += 2;
+
+                    while idx < chars.len() {
+                        match chars[idx] {
+                            ' ' | '\n' | '\r' => {
+                                if !p_buf.is_empty() {
+                                    p_buf.push(buf.clone());
+                                }
+
+                                self.tokens.push(Token::new(TokenType::Instruction(InstructionType::StructPath(p_buf.clone())), start_loc.clone(), p_buf.clone().join("::")));
+                                buf.clear();
+                                break;
+                            }
+                            c @ ('\'' | '"') => {
+                                error!({loc => self.loc()}, "Invalid char in struct path token, expected /a-z|A-Z|0-9|_|-/ got {c}");
+                                bail!("")
+                            }
+
+                            ':' if chars.get(idx + 1) == Some(&':') => {
+                                if buf.is_empty() {
+                                    error!({loc => self.loc()}, "Invalid char in struct path token, expected /a-z|A-Z|0-9|_|-/ got '.'");
+                                    bail!("")
+                                }
+                                idx += 2; // skip ::
+                                self.loc.col += 2;
+                                p_buf.push(buf.clone());
+                                buf.clear();
+                            }
+
+                            c => {
+                                buf.push(c);
+                                idx += 1;
+                                self.loc.inc_col();
+                            }
+                        }
+                    }
+                }
+
+                '.' if !buf.is_empty() => {
+                    let mut p_buf = vec![buf.clone()];
+                    buf.clear();
+                    idx += 1; // skip .
+                    self.loc.inc_col();
+
+                    while idx < chars.len() {
+                        match chars[idx] {
+                            ' ' | '\n' | '\r' => {
+                                if !p_buf.is_empty() {
+                                    p_buf.push(buf.clone());
+                                }
+                                self.tokens.push(Token::new(TokenType::Instruction(InstructionType::StructItem(p_buf.clone())), start_loc.clone(), p_buf.clone().join(".")));
+                                buf.clear();
+                                break;
+                            }
+                            c @ ('\'' | '"') => {
+                                error!({loc => self.loc()}, "Invalid char in struct access token, expected /a-z|A-Z|0-9|_|-/ got {c}");
+                                bail!("")
+                            }
+
+                            '.' => {
+                                if buf.is_empty() {
+                                    error!({loc => self.loc()}, "Invalid char in struct access token, expected /a-z|A-Z|0-9|_|-/ got '.'");
+                                    bail!("")
+                                }
+                                idx += 1; // skip .
+                                self.loc.col += 1;
+                                p_buf.push(buf.clone());
+                                buf.clear();
+                            }
+
+                            c => {
+                                buf.push(c);
+                                idx += 1;
+                                self.loc.inc_col();
+                            }
+                        }
+                    }
+                }
 
                 ch @ (' ' | '\n' | '\r') => {
                     if ch == '\n' {
@@ -230,14 +312,15 @@ impl Lexer {
             "fn"         => TokenType::Keyword(KeywordType::Function),
             "then"       => TokenType::Keyword(KeywordType::Then),
             "done"       => TokenType::Keyword(KeywordType::Done),
-            "struct"   => TokenType::Keyword(KeywordType::Struct),
+            "typedef"    => TokenType::Keyword(KeywordType::TypeDef),
+            "structdef"  => TokenType::Keyword(KeywordType::StructDef),
             "inline"     => TokenType::Keyword(KeywordType::Inline),
             "export"     => TokenType::Keyword(KeywordType::Export),
             "extern"     => TokenType::Keyword(KeywordType::Extern),
             "returns"    => TokenType::Keyword(KeywordType::Returns),
             "with"       => TokenType::Keyword(KeywordType::With),
             "drop"       => TokenType::Instruction(InstructionType::Drop),
-            "_dbg_print"=> TokenType::Instruction(InstructionType::Print),
+            "_dbg_print" => TokenType::Instruction(InstructionType::Print),
             "dup"        => TokenType::Instruction(InstructionType::Dup),
             "rot"        => TokenType::Instruction(InstructionType::Rot),
             "over"       => TokenType::Instruction(InstructionType::Over),
@@ -273,12 +356,14 @@ impl Lexer {
             "(ptr)"      => TokenType::Instruction(InstructionType::CastPtr),
             "(int)"      => TokenType::Instruction(InstructionType::CastInt),
             "(void)"     => TokenType::Instruction(InstructionType::CastVoid),
-            "bool"     => TokenType::Instruction(InstructionType::TypeBool),
-            "ptr"      => TokenType::Instruction(InstructionType::TypePtr),
-            "int"      => TokenType::Instruction(InstructionType::TypeInt),
-            "void"     => TokenType::Instruction(InstructionType::TypeVoid),
-            "any"      => TokenType::Instruction(InstructionType::TypeAny),
             "return"     => TokenType::Instruction(InstructionType::Return),
+            "ptr"        => TokenType::Type(TypeType::Ptr),
+            "u8"         => TokenType::Type(TypeType::U8),
+            "u16"        => TokenType::Type(TypeType::U16),
+            "u32"        => TokenType::Type(TypeType::U32),
+            "u64"        => TokenType::Type(TypeType::U64),
+            "void"       => TokenType::Type(TypeType::Void),
+            "any"        => TokenType::Type(TypeType::Any),
             t => TokenType::Unknown(t.to_string())
         }
     }

src/parser/mod.rs

@@ -6,7 +6,7 @@ use std::{collections::HashMap, path::Path};
 
 use anyhow::{bail, Result};
 
-use crate::{cli::CliArgs, lexer::Lexer, types::{ast::{AstNode, Block, ConstUse, Constant, FnCall, Function, If, MemUse, Memory, Module, Program, While}, common::Loc, token::{InstructionType, KeywordType, Token, TokenType}}};
+use crate::{cli::CliArgs, lexer::Lexer, types::{ast::{AstNode, Block, ConstUse, Constant, FnCall, Function, If, MemSize, MemUse, Memory, Module, Program, StructDef, While}, common::Loc, token::{InstructionType, KeywordType, Token, TokenType, TypeType}}};
 
 use self::{builtin::get_builtin_symbols, precompiler::{precompile_const, precompile_mem}, utils::{expect, peek_check, peek_check_multiple, PeekResult}};
 
@@ -16,6 +16,7 @@ bitflags::bitflags! {
         const EXTERN = 1 << 0;
         const EXPORT = 1 << 1;
         const INLINE = 1 << 2;
+        const ALLOW_TYPES = 1 << 3;
     }
 }
 
@@ -35,7 +36,7 @@ pub fn parse(cli_args: &CliArgs, tokens: &mut Vec<Token>) -> Result<Program> {
         functions: HashMap::new(),
         constants: HashMap::new(),
         memories: HashMap::new(),
-        
+        struct_defs: HashMap::new()
     };
 
     let syms = get_builtin_symbols(&mut prog);
@@ -73,7 +74,8 @@ fn parse_next(cli_args: &CliArgs, prog: &mut Program, tokens: &mut Vec<Token>, f
                 KeywordType::Memory    => parse_memory(&token, cli_args, prog, tokens, is_module_root)?,
                 KeywordType::Constant  => parse_const(&token, cli_args, prog, tokens)?,
                 KeywordType::Function  => parse_function(&token, cli_args, prog, tokens, flags)?,
-                KeywordType::Struct   => todo!(),
+                KeywordType::StructDef => parse_struct(&token, cli_args, prog, tokens)?,
+                KeywordType::TypeDef   => todo!(),
                 KeywordType::Inline    => parse_inline(&token, cli_args, prog, tokens, flags)?,
                 KeywordType::Export    => parse_export(&token, cli_args, prog, tokens, flags)?,
                 KeywordType::Extern    => parse_extern(&token, cli_args, prog, tokens, flags)?,
@@ -89,7 +91,11 @@ fn parse_next(cli_args: &CliArgs, prog: &mut Program, tokens: &mut Vec<Token>, f
                 error!({loc => token.loc}, "Unexpected token {it:?}, please create a main function, this is not a scripting language");
                 bail!("")
             } else {
-                AstNode::Token(token)
+                match it {
+                    InstructionType::StructPath(p) => parse_struct_path(&token, prog, p)?,
+                    InstructionType::StructItem(p) => parse_struct_item(&token, prog, p)?,
+                    _ => AstNode::Token(token)
+                }
             }
         },
         TokenType::Unknown(ut) => {
@@ -101,10 +107,162 @@ fn parse_next(cli_args: &CliArgs, prog: &mut Program, tokens: &mut Vec<Token>, f
                 parse_unknown(&token, cli_args, prog, tokens, flags)?
             }
         },
+        TokenType::Type(t) => {
+            if flags.contains(Flags::ALLOW_TYPES) {
+                AstNode::Token(token)
+            } else {
+                error!({loc => token.loc}, "Unexpected type {t:?}");
+                bail!("")
+            }
+        },
     };
     Ok(ret)
 }
 
+fn parse_struct_item(org: &Token, prog: &mut Program, p: &Vec<String>) -> Result<AstNode> {
+    fn find_disp(strct: &StructDef, disp: &mut usize, path: &[String]) {
+        let Some(p) = path.get(0) else {
+            return
+        };
+
+        for item in &strct.body {
+            if p == &item.0 {
+                match &item.2 {
+                    TypeType::Struct(strct) => {
+                        *disp += item.1;
+                        find_disp(strct, disp, &path[1..])
+                    },
+                    _ => {
+                        *disp += item.1;
+                    }
+                }
+            }
+        }
+
+    }
+    if let Some(mem) = prog.memories.get(&p[0].to_string()) {
+        match &mem.size {
+            MemSize::Size(_) => {
+                error!({loc => org.loc()}, "You can only access items in structs");
+                bail!("")
+            },
+            MemSize::Type(t) => {
+                match t {
+                    TypeType::Struct(s) => {
+
+                        let mut disp = 0;
+                        find_disp(&s, &mut disp, &p[1..]);
+                        return Ok(AstNode::MemUse(MemUse{
+                            ident: p[0].clone(),
+                            loc: org.loc(),
+                            disp: Some(disp)
+                        }));
+                    },
+                    _ => {
+                        error!({loc => org.loc()}, "You can only access items in structs");
+                        bail!("")
+                    }
+                }
+            },
+        }
+    }
+
+    error!("Failed to find memory {}", p[0]);
+    bail!("")
+}
+
+fn parse_struct_path(org: &Token, prog: &mut Program, p: &Vec<String>) -> Result<AstNode> {
+
+    fn find_disp(strct: &StructDef, disp: &mut usize, path: &[String]) {
+        let Some(p) = path.get(0) else {
+            return
+        };
+
+        for item in &strct.body {
+            if p == &item.0 {
+                match &item.2 {
+                    TypeType::Struct(strct) => {
+                        *disp += item.1;
+                        find_disp(strct, disp, &path[1..])
+                    },
+                    _ => {
+                        *disp += item.1;
+                    }
+                }
+            }
+        }
+
+    }
+    let mut disp = 0;
+    if let Some(strct) = prog.struct_defs.get(&p[0].to_string()) {
+        find_disp(strct, &mut disp, &p[1..]);
+        return Ok(AstNode::StructDispPush{
+            ident: org.lexem.clone(),
+            loc: org.loc(),
+            disp
+        });
+    }
+
+    error!("Failed to find struct {}", p[0]);
+    bail!("")
+}
+
+fn parse_struct(org: &Token, cli_args: &CliArgs, prog: &mut Program, tokens: &mut Vec<Token>) -> Result<AstNode> {
+    let ident = expect(tokens, TokenType::Unknown(String::new()))?;
+    expect(tokens, TokenType::Keyword(KeywordType::Do))?;
+
+
+    let mut body: Vec<(String, usize, TypeType)> = Vec::new();
+    let mut size = 0;
+
+    loop {
+        let ident = expect(tokens, TokenType::Unknown(String::new()))?;
+        expect(tokens, TokenType::Keyword(KeywordType::Do))?;
+        let typ = parse_next(cli_args, prog, tokens, Flags::ALLOW_TYPES, false)?;
+        let (typ, disp) = match &typ {
+            AstNode::Token(t) => {
+                match &t.typ {
+                    TokenType::Type(t) => {
+                        let disp = size;
+                        size += t.get_size();
+                        (t, disp)
+                    }
+                    _ => {
+                        error!({loc => t.loc()}, "Expected type, got {t:?}");
+                        bail!("")
+                    }
+                }
+            },
+            t => {
+                error!({loc => typ.loc()}, "Expected type, got {t:?}");
+                bail!("")
+            }
+        };
+        expect(tokens, TokenType::Keyword(KeywordType::End))?;
+
+        body.push((ident.lexem, disp, typ.clone()));
+
+        if peek_check(tokens, TokenType::Keyword(KeywordType::Done)).correct(){
+            tokens.pop();
+            break;
+        }
+        // if peek_check(tokens, TokenType::Keyword(KeywordType::End)).correct()
+    };
+
+
+
+    let def = StructDef{
+        loc: org.loc(),
+        ident: ident.lexem.clone(),
+        body,
+        size,
+    };
+
+    prog.struct_defs.insert(ident.lexem, def.clone());
+
+    Ok(AstNode::StructDef(def))
+}
+
 fn parse_memory(org: &Token, cli_args: &CliArgs, prog: &mut Program, tokens: &mut Vec<Token>, is_module_root: bool) -> Result<AstNode> {
     let name = expect(tokens, TokenType::Unknown(String::new()))?;
 
@@ -118,7 +276,7 @@ fn parse_memory(org: &Token, cli_args: &CliArgs, prog: &mut Program, tokens: &mu
             PeekResult::Wrong(_) => (),
             PeekResult::None => panic!("idk what to do herre"),
         }
-        body.push(parse_next(cli_args, prog, tokens, Flags::empty(), false)?);
+        body.push(parse_next(cli_args, prog, tokens, Flags::ALLOW_TYPES, false)?);
     }
     expect(tokens, TokenType::Keyword(KeywordType::End))?;
 
@@ -152,13 +310,21 @@ fn parse_function(org: &Token, cli_args: &CliArgs, prog: &mut Program, tokens: &
     
     loop {
         if let PeekResult::Correct(t) = peek_check_multiple(tokens, vec![
-            TokenType::Instruction(InstructionType::TypeAny),
+            TokenType::Type(TypeType::Any),
-            TokenType::Instruction(InstructionType::TypeBool),
+            TokenType::Type(TypeType::U8),
-            TokenType::Instruction(InstructionType::TypeInt),
+            TokenType::Type(TypeType::U16),
-            TokenType::Instruction(InstructionType::TypePtr),
+            TokenType::Type(TypeType::U32),
-            TokenType::Instruction(InstructionType::TypeVoid),
+            TokenType::Type(TypeType::U64),
+            TokenType::Type(TypeType::Ptr),
+            TokenType::Type(TypeType::Void),
+            TokenType::Type(TypeType::Custom(Vec::new())),
         ]) {
-            args.push(t.typ.clone());
+            match &t.typ {
+                TokenType::Type(tt) => {
+                    args.push(tt.clone());
+                }
+                _ => unreachable!()
+            }
         } else {
             break;
         }
@@ -171,13 +337,21 @@ fn parse_function(org: &Token, cli_args: &CliArgs, prog: &mut Program, tokens: &
     
     loop {
         if let PeekResult::Correct(t) = peek_check_multiple(tokens, vec![
-            TokenType::Instruction(InstructionType::TypeAny),
+            TokenType::Type(TypeType::Any),
-            TokenType::Instruction(InstructionType::TypeBool),
+            TokenType::Type(TypeType::U8),
-            TokenType::Instruction(InstructionType::TypeInt),
+            TokenType::Type(TypeType::U16),
-            TokenType::Instruction(InstructionType::TypePtr),
+            TokenType::Type(TypeType::U32),
-            TokenType::Instruction(InstructionType::TypeVoid),
+            TokenType::Type(TypeType::U64),
+            TokenType::Type(TypeType::Ptr),
+            TokenType::Type(TypeType::Void),
+            TokenType::Type(TypeType::Custom(Vec::new())),
         ]) {
-            ret_args.push(t.typ.clone());
+            match &t.typ {
+                TokenType::Type(tt) => {
+                    ret_args.push(tt.clone());
+                }
+                _ => unreachable!()
+            }
         } else {
             break;
         }
@@ -235,7 +409,7 @@ fn parse_if(org: &Token, cli_args: &CliArgs, prog: &mut Program, tokens: &mut Ve
             PeekResult::Wrong(w) => {
                 match w.typ {
                     TokenType::Keyword(KeywordType::Then) => {
-                        warn!("If is defined as `if ... do ... done`");
+                        warn!({loc => w.loc()}, "If is defined as `if ... do ... done`");
                     }
                     _ => ()
                 }
@@ -502,6 +676,7 @@ fn parse_include(_: &Token, cli_args: &CliArgs, prog: &mut Program, tokens: &mut
                 functions: prog.functions.clone(),
                 constants: prog.constants.clone(),
                 memories: prog.memories.clone(),
+                struct_defs: prog.struct_defs.clone(),
                 
             };
             
@@ -563,7 +738,7 @@ fn parse_const(org: &Token, cli_args: &CliArgs, prog: &mut Program, tokens: &mut
 
 fn parse_unknown(org: &Token, _: &CliArgs, prog: &mut Program, _: &mut Vec<Token>, _: Flags ) -> Result<AstNode> {
     //TODO: Typing?
-    if let Some(func) = prog.functions.get(&org.lexem) {
+    if let Some(func) = prog.functions.get(&org.lexem.clone()) {
         if func.inline {
             return Ok(AstNode::Block(Block{ loc: org.loc.clone(), body: func.body.clone(), comment: format!("inline fn {}", func.ident) }))
         } else {
@@ -571,15 +746,42 @@ fn parse_unknown(org: &Token, _: &CliArgs, prog: &mut Program, _: &mut Vec<Token
         }
     }
 
-    if let Some(_) = prog.constants.get(&org.lexem) {
+    if let Some(_) = prog.constants.get(&org.lexem.clone()) {
         return Ok(AstNode::ConstUse(ConstUse{ loc: org.loc.clone(), ident: org.lexem.clone() }));
     }
 
-    if let Some(_) = prog.memories.get(&org.lexem) {
+    if let Some(_) = prog.memories.get(&org.lexem.clone()) {
-        return Ok(AstNode::MemUse(MemUse{ loc: org.loc.clone(), ident: org.lexem.clone() }));
+        return Ok(AstNode::MemUse(MemUse{ loc: org.loc.clone(), ident: org.lexem.clone(), disp: None }));
     }
 
-    dbg!(&prog.constants);
+    if let Some(t) = prog.struct_defs.get(&org.lexem.clone()) {
+        return Ok(AstNode::Token(Token {
+            typ: TokenType::Type(TypeType::Struct(t.clone())),
+            loc: org.loc(),
+            lexem: org.lexem.clone(),
+        }));
+    }
+
+
+    // if org.lexem.clone().contains("::") {
+    //     let pth = org.lexem.clone();
+    //     let pth = pth.split("::").collect::<Vec<&str>>();
+    //     dbg!(prog.struct_defs.clone());
+    //     if let Some(t) = prog.struct_defs.get(&pth[0].to_string()) {
+    //         if let Some(i) = t.body.iter().find(|i| i.0 == pth[1].to_string()) {
+    //             return Ok(AstNode::StructDispPush{
+    //                 ident: org.lexem.clone(),
+    //                 loc: org.loc(),
+    //                 disp: i.1
+    //             });
+
+    //         }
+    //     }
+    // }
+
+
+    // dbg!(&prog.constants);
+    debug!({loc => org.loc.clone()}, "Unknown token");
     error!({loc => org.loc.clone()}, "Unknown token {:?}", org);
     bail!("")
 }

src/parser/precompiler.rs

@@ -1,17 +1,56 @@
 use anyhow::bail;
 
-use crate::types::{ast::{AstNode, Program}, common::Loc, token::{InstructionType, TokenType}};
+use crate::types::{ast::{AstNode, MemSize, Program}, common::Loc, token::{InstructionType, TokenType, TypeType}};
 
 
-pub fn precompile_mem(prog: &Program, ast: Vec<AstNode> ) -> anyhow::Result<usize> {
+pub fn precompile_mem(prog: &Program, ast: Vec<AstNode> ) -> anyhow::Result<MemSize> {
+    match &ast[0] {
+        AstNode::Token(t) => {
+            match &t.typ {
+                TokenType::Type(_) => {
+                    let mut buf = vec![];
+                    let mut i = 0;
+                    while ast.len() > i {
+                        match &ast[i] {
+                            AstNode::Token(t) => {
+                                match &t.typ {
+                                    TokenType::Type(t) => {
+                                        match t {
+                                            TypeType::Struct(s) => {
+                                                return Ok(MemSize::Type(TypeType::Struct(s.clone())));
+                                            },
+                                            _ => ()
+                                        }
+                                        buf.push(t.clone());
+                                        i += 1;
+                                    }
+                                    _ => {
+                                        error!({loc => t.loc()}, "Cannot use a type and a number as a memory size at the same time");
+                                        bail!("")
+                                    }
+                                }
+                            },
+                            _ => {
+                                error!({loc => t.loc()}, "Cannot use a type and a number as a memory size at the same time");
+                                        bail!("")
+                            }
+                        }
+                    }
+                    return Ok(MemSize::Type(TypeType::Custom(buf)));
+                }
+                _ => ()
+            }
+        },
+        _ => (),
+    }
     match precompile_const(prog, ast, &mut Vec::new()) {
         Ok(v) => {
             match v {
                 AstNode::Int(_, i) => {
-                    return Ok(i)
+                    return Ok(MemSize::Size(i))
                 }
                 _ => {
-                    error!("memories can only have numbers or types in their size");
+                    error!({loc => v.loc()}, "Can only have a type or a number as a memory size");
                     bail!("")
                 }
             }
@@ -142,7 +181,11 @@ pub fn precompile_const(prog: &Program, ast: Vec<AstNode>, stack: &mut Vec<usize
                             }
                         }
                     },
-                    TokenType::Unknown(_) => todo!(),
+                    TokenType::Unknown(_) => unreachable!(),
+                    TokenType::Type(_) => {
+                        error!({loc => t.loc()}, "Cannot use a type and a number as a memory size at the same time");
+                        bail!("")
+                    },
                 }   
             },
             //TODO: Implement these

src/parser/utils.rs

@@ -41,6 +41,9 @@ pub fn cmp(lhs: &TokenType, rhs: &TokenType) -> bool {
         (TokenType::Instruction(lhs), TokenType::Instruction(rhs)) => {
             std::mem::discriminant(lhs) == std::mem::discriminant(rhs)
         },
+        (TokenType::Type(lhs), TokenType::Type(rhs)) => {
+            std::mem::discriminant(lhs) == std::mem::discriminant(rhs)
+        },
         (TokenType::Unknown(_), TokenType::Unknown(_)) => true,
         _ => false
     }
@@ -50,7 +53,7 @@ pub fn peek_check_multiple(tokens: &Vec<Token>, typs: Vec<TokenType>) -> PeekRes
     let t = tokens.last();
     
     if let Some(t) = t {
-        for tt in typs {
+        for tt in typs.clone() {
             if cmp(&t.typ, &tt) {
                 return PeekResult::Correct(t);
             }
@@ -86,7 +89,7 @@ pub fn expect(tokens: &mut Vec<Token>, typ: TokenType) -> Result<Token> {
         Some(t) => {
             //? Source: https://doc.rust-lang.org/std/mem/fn.discriminant.html
             if std::mem::discriminant(&t.typ) != std::mem::discriminant(&typ) {
-                error!("Expected {:?}, but got {:?}", typ, t.typ);
+                error!({loc => t.loc()}, "Expected {:?}, but got {:?}", typ, t.typ);
                 bail!("")
             }
             Ok(t)

src/types/ast/mod.rs

@@ -1,6 +1,6 @@
 use std::collections::HashMap;
 
-use super::{common::Loc, token::{Token, TokenType}};
+use super::{common::Loc, token::{Token, TypeType}};
 
 
 //TODO: Implement missing stuff
@@ -23,17 +23,23 @@ pub enum AstNode {
     //     ident: String,
     //     value: InstructionType
     // },
-    // Struct{
-    //     loc: Loc,
-    //     ident: String,
-    //     body: Vec<(String, usize)> // (field ident, size in bytes)
-    // },
     // StructDef{
     //     loc: Loc,
     //     extrn: bool,
     //     ident: String,
     //     body: Vec<(String, usize)> // (field ident, size in bytes)
     // },
+    StructDef(StructDef),
+    StructDispPush{
+        loc: Loc,
+        disp: usize,
+        ident: String,
+    },
+    // StructItemPush{
+    //     loc: Loc,
+    //     disp: usize,
+    //     ident: String,
+    // },
     If(If),
     While(While),
     Module(Module),
@@ -63,14 +69,25 @@ impl AstNode {
             AstNode::Str(loc, _) => loc.clone(),
             AstNode::CStr(loc, _) => loc.clone(),
             AstNode::Char(loc, _) => loc.clone(),
+            AstNode::StructDef(s) => s.loc.clone(),
+            AstNode::StructDispPush { loc, ..} => loc.clone(),
+            // AstNode::StructItemPush { loc, .. } => loc.clone(),
         }
     }
 }
 
+#[derive(Debug, Clone, PartialEq)]
+pub struct StructDef {
+    pub loc: Loc,
+    pub ident: String,
+    pub body: Vec<(String, usize, TypeType)>, // (field ident, size in bytes)
+    pub size: usize
+}
 #[derive(Debug, Clone)]
 pub struct MemUse {
     pub loc: Loc,
     pub ident: String,
+    pub disp: Option<usize>
 }
 #[derive(Debug, Clone)]
 pub struct ConstUse {
@@ -119,8 +136,8 @@ pub struct Function {
     pub inline: bool,
     pub extrn: bool,
     pub export: bool,
-    pub arg_types: Vec<TokenType>,
+    pub arg_types: Vec<TypeType>,
-    pub ret_types: Vec<TokenType>,
+    pub ret_types: Vec<TypeType>,
     pub body: Vec<AstNode>
 }
 
@@ -136,7 +153,7 @@ pub struct Memory {
     pub loc: Loc,
     pub ident: String,
     pub statc: bool,
-    pub size: usize // bytes
+    pub size: MemSize // bytes
 }
 
 
@@ -146,6 +163,31 @@ pub struct Program {
     pub functions: HashMap<String, Function>,
     pub constants: HashMap<String, Constant>,
     pub memories: HashMap<String, Memory>,
+    pub struct_defs: HashMap<String, StructDef>,
+}
+
+#[derive(Debug, Clone)]
+pub enum MemSize {
+    Size(usize),
+    Type(TypeType)
+}
+
+impl EscIdent for FnCall {
+    fn ident(&self) -> String {
+        self.ident.clone()
+    }
+}
+
+impl EscIdent for ConstUse {
+    fn ident(&self) -> String {
+        self.ident.clone()
+    }
+}
+
+impl EscIdent for MemUse {
+    fn ident(&self) -> String {
+        self.ident.clone()
+    }
 }
 
 impl EscIdent for Constant {

src/types/token/mod.rs

@@ -1,6 +1,6 @@
 #![allow(dead_code)]
 
-use super::common::Loc;
+use super::{ast::StructDef, common::Loc};
 
 #[derive(Debug, Clone, PartialEq)]
 pub enum InstructionType {
@@ -10,6 +10,8 @@ pub enum InstructionType {
     PushStr(String),
     PushCStr(String),
     PushChar(char),
+    StructPath(Vec<String>), // foo::bar
+    StructItem(Vec<String>), // foo.bar
     Drop,
     Print,
     Dup,
@@ -56,14 +58,6 @@ pub enum InstructionType {
     CastInt,
     CastVoid,
     
-    // typing
-    TypeBool,
-    TypePtr,
-    TypeInt,
-    TypeVoid,
-    // TypeStr,
-    TypeAny,
-    
     FnCall,
     MemUse,
     ConstUse,
@@ -83,7 +77,8 @@ pub enum KeywordType {
     Function,
     Then,
     Done,
-    Struct,
+    StructDef,
+    TypeDef,
     Inline,
     Export,
     Extern,
@@ -91,9 +86,56 @@ pub enum KeywordType {
     With,
 }
 
+#[derive(Clone, PartialEq)]
+pub enum TypeType {
+    Ptr,
+    U8,
+    U16,
+    U32,
+    U64,
+    Void,
+    Any,
+    Custom(Vec<TypeType>),
+    Struct(StructDef)
+}
+
+impl TypeType {
+    pub fn get_size(&self) -> usize {
+        match self {
+            TypeType::Ptr => std::mem::size_of::<*const ()>(),
+            TypeType::U8 => 1,
+            TypeType::U16 => 2,
+            TypeType::U32 => 4,
+            TypeType::U64 => 8,
+            TypeType::Void => 0,
+            TypeType::Any => 0,
+            TypeType::Custom(ts) => ts.iter().map(|f| f.get_size()).sum(),
+            TypeType::Struct(s) => s.size,
+        }
+    }
+}
+
+impl std::fmt::Debug for TypeType {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        match self {
+            Self::Ptr => write!(f, "Ptr"),
+            Self::U8 => write!(f, "U8"),
+            Self::U16 => write!(f, "U16"),
+            Self::U32 => write!(f, "U32"),
+            Self::U64 => write!(f, "U64"),
+            Self::Void => write!(f, "Void"),
+            Self::Any => write!(f, "Any"),
+            Self::Custom(arg0) => f.debug_tuple("Custom").field(arg0).finish(),
+            Self::Struct(arg0) => write!(f, "{} {}{:?}", arg0.size, arg0.ident, arg0.body),
+        }
+    }
+}
+
+
 #[derive(Debug, Clone, PartialEq)]
 pub enum TokenType {
     Keyword(KeywordType),
+    Type(TypeType),
     Instruction(InstructionType),
     Unknown(String)
 }

test.mcl

@@ -1,11 +1,17 @@
 include "std.mcl"
 
-// structdef Foo do
+structdef Uwu do
-//     buz do sizeof(u64) end
+    owo do u64 end
-//     baz do sizeof(u64) end
+    twt do u64 end
-// done
+done
 
-memory s_foo sizeof(u32) end
+structdef Foo do
+    buz do u64 end
+    uwu do Uwu end
+done
+
+
+memory s_foo Foo end
 
 //? Comments :3
 
@@ -15,25 +21,29 @@ memory s_foo sizeof(u32) end
 
 // fn putd with int returns void then drop done
 
-fn main with int ptr returns int then
+fn main with void returns void then
-    1 2 add
-    69 _dbg_print
-    "Hewo\n" puts
 
-    if 3 4 eq do
+    s_foo.uwu.twt 69 write64
-        "omg what impossible!\n"
-    else if 1 1 eq do
-        "whaaaaaaaaa\n"
-    else
-        "finally, some good soup\n"
-    done
-    puts
 
-    10 
+    s_foo.uwu.twt read64 _dbg_print
-    while dup 0 gt do
+    // 1 2 add
-        "uwu " puts
+    // 69 _dbg_print
-        dup _dbg_print
+    // "Hewo\n" puts
-        1 sub
+
-    done
+    // if 3 4 eq do
+    //     "omg what impossible!\n"
+    // else if 1 1 eq do
+    //     "whaaaaaaaaa\n"
+    // else
+    //     "finally, some good soup\n"
+    // done
+    // puts
+
+    // 10 
+    // while dup 0 gt do
+    //     "uwu " puts
+    //     dup _dbg_print
+    //     1 sub
+    // done
 
 done