Cargo.toml

@@ -2,7 +2,6 @@
 name = "skylang"
 version = "0.1.0"
 edition = "2021"
-channel = "nightly"
 
 [lib]
 proc-macro = true

LICENSE

@@ -1,24 +0,0 @@
-This is free and unencumbered software released into the public domain.
-
-Anyone is free to copy, modify, publish, use, compile, sell, or
-distribute this software, either in source code form or as a compiled
-binary, for any purpose, commercial or non-commercial, and by any
-means.
-
-In jurisdictions that recognize copyright laws, the author or authors
-of this software dedicate any and all copyright interest in the
-software to the public domain. We make this dedication for the benefit
-of the public at large and to the detriment of our heirs and
-successors. We intend this dedication to be an overt act of
-relinquishment in perpetuity of all present and future rights to this
-software under copyright law.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
-IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
-OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
-ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
-OTHER DEALINGS IN THE SOFTWARE.
-
-For more information, please refer to <https://unlicense.org>

TAGS~

@@ -0,0 +1,159 @@
+
+Cargo.lock,0
+
+Cargo.toml,0
+
+README.md,130
+# ![SkyLang](.images/slang_logo_dark_transparent_not_motto.png)![SkyLang](.images/slang_logo_dark_transparent_not_motto.png)
1,0
+
+src/codegen/fasm.rs,91
+pub fn fasm_codegen(exprs: &Vec<Expr>, not_a_function: bool) -> String {fasm_codegen
3,27
+
+src/codegen/fasmarm.rs,0
+
+src/codegen/mod.rs,23
+pub mod fasm;fasm
1,0
+
+src/lex/mod.rs,47
+pub mod tok;tok
1,0
+pub mod parse;parse
2,13
+
+src/lex/parse.rs,755
+pub fn match_single_char<'a>(word: &'a str) -> Option<Token<'a>> {match_single_char
6,40
+    macro_rules! tok {tok
7,107
+pub fn match_keyword<'a>(word: &'a str) -> Option<Token<'a>> {match_keyword
38,697
+    macro_rules! tok {tok
39,760
+pub fn match_two_char<'a>(word: &'a str) -> Option<Token<'a>> {match_two_char
66,1310
+    macro_rules! tok {tok
67,1374
+pub fn match_string_literal<'a>(word: &'a str) -> Option<Token<'a>> {match_string_literal
85,1681
+    macro_rules! tok {tok
86,1751
+pub fn match_int_literal<'a>(word: &'a str) -> Option<Token<'a>> {match_int_literal
114,2191
+    macro_rules! tok {tok
115,2258
+pub fn match_identifier<'a>(word: &'a str) -> Option<Token<'a>> {match_identifier
134,2562
+    macro_rules! tok {tok
135,2628
+
+src/lex/tok.rs,2268
+pub struct Token<'a> {Token
6,79
+    tt: TokenType,tt
7,102
+    word: &'a str,word
8,121
+pub enum TokenType {TokenType
12,160
+    EOF,EOF
13,181
+    Semicolon,	// ;Semicolon
16,222
+    Equal,	// =Equal
17,242
+    LeftParen,	// (LeftParen
18,258
+    RightParen, // )RightParen
19,278
+    LeftBrace,	// {LeftBrace
20,299
+    RightBrace, // }RightBrace
21,319
+    Comma,	// ,Comma
22,340
+    Dot,	// .Dot
23,356
+    Minus,	// -Minus
24,370
+    Plus,	// +Plus
25,386
+    Slash,	// /Slash
26,401
+    Star,	// *Star
27,417
+    Percent,	// %Percent
28,432
+    Bang,	// !Bang
29,450
+    Colon,	// :Colon
30,465
+    Less,	// <Less
31,481
+    Greater,	// >Greater
32,496
+    Fn,		// fnFn
35,531
+    Let,	// letLet
36,546
+    If,		// ifIf
37,562
+    Else,	// elseElse
38,577
+    While,	// whileWhile
39,595
+    Elif,	// elifElif
40,615
+    Return,	// returnReturn
41,633
+    For,	// forFor
42,655
+    In,		// inIn
43,671
+    Break,	// breakBreak
44,686
+    Continue,	// continueContinue
45,706
+    EqualEqual,		// ==EqualEqual
48,761
+    BangEqual,		// !=BangEqual
49,784
+    LessEqual,		// <=LessEqual
50,806
+    GreaterEqual,	// >=GreaterEqual
51,828
+    String,	// A string literal.String
54,873
+    Number,	// An integer.Number
55,906
+    Identifier, // An identifier.Identifier
56,933
+    True,	// trueTrue
57,967
+    False,	// falseFalse
58,985
+    Null,	// NoneNull
59,1005
+    Error, // A syntax error.Error
62,1037
+pub struct Lexer<'a> {Lexer
66,1087
+    source: &'a str,source
67,1110
+    tokens: Vec<Token<'a>>,tokens
68,1131
+    current: usize,current
69,1159
+    after: &'a strafter
70,1179
+impl<'a> Lexer<'a> {Lexer
73,1201
+    pub fn new() -> Self {new
74,1222
+impl<'a> std::iter::Iterator for Lexer<'a> {Lexer
84,1386
+    type Item = Option<char>;Item
85,1431
+    fn next(&mut self) -> Option<Self::Item> {next
87,1462
+impl<'a> From<&'a str> for Lexer<'a> {Lexer
92,1579
+    fn from(value: &'a str) -> Self {from
93,1618
+impl<'a> From<&'a std::string::String> for Lexer<'a> {Lexer
103,1800
+    fn from(value: &'a std::string::String) -> Self {from
104,1855
+impl<'a> Token<'a> {Token
114,2057
+    pub fn new(tt: TokenType, word: &'a str) -> Self {new
115,2078
+    pub fn empty() -> Self {empty
122,2171
+
+src/main.rs,102
+pub mod lex;lex
3,21
+pub mod codegen;codegen
4,34
+pub mod parse;parse
7,106
+fn main() {main
9,122
+
+src/parse/ast.rs,2125
+pub enum Expr<'a> {Expr
2,17
+    MathExpr(Math<'a>),MathExpr
3,37
+    FunCall(FunCall<'a>),FunCall
4,61
+    FunDefinition(FunDefinition<'a>),FunDefinition
5,87
+    VarDefinition(VarDefinition<'a>),VarDefinition
6,125
+    Return(Value<'a>),Return
7,163
+    If(IfStatement<'a>),If
8,186
+    BreakpointBreakpoint
9,211
+pub struct Math<'a> {Math
15,279
+    pub left: &'a Value<'a>,left
16,301
+    pub right: &'a Value<'a>,right
17,330
+    pub operator: MathOperatoroperator
18,360
+pub enum MathOperator {MathOperator
22,424
+    OP_ADD,	// AdditionOP_ADD
23,448
+    OP_SUB,	// SubtractionOP_SUB
24,472
+    OP_DIV,	// DivisionOP_DIV
25,499
+    OP_MULT,	// MultiplicationOP_MULT
26,523
+    OP_MOD,	// ModuloOP_MOD
27,554
+pub struct FunCall<'a> {FunCall
33,610
+    pub name: &'a str,name
34,635
+    pub params: Vec<Value<'a>>,params
35,658
+pub struct FunDefinition<'a> {FunDefinition
39,710
+    pub name: &'a str,name
40,741
+    pub contents: Vec<Expr<'a>>,contents
41,764
+pub struct FunParamDef<'a> {FunParamDef
45,817
+    name: &'a str,name
46,846
+    number: u64,number
47,865
+pub struct FunParamCall<'a> {FunParamCall
51,902
+    pub value: Value<'a>,value
52,932
+pub struct VarDefinition<'a> {VarDefinition
58,992
+    pub name: &'a str,name
59,1023
+    pub value: Value<'a>,value
60,1046
+pub struct VarReference<'a> {VarReference
65,1106
+    pub name: &'a str,name
66,1136
+pub struct ParamReference {ParamReference
70,1192
+    pub param_number: u64,param_number
71,1220
+pub enum Value<'a> {Value
75,1280
+    Var(VarReference<'a>),Var
76,1301
+    Param(ParamReference),Param
77,1328
+    Number(u64),Number
78,1355
+pub struct IfStatement<'a> {IfStatement
82,1392
+    pub condition: Condition<'a>,condition
83,1421
+    pub if_true: Vec<Expr<'a>>,if_true
84,1455
+pub struct Condition<'a> {Condition
88,1507
+    pub left: Value<'a>,left
89,1534
+    pub right: Value<'a>,right
90,1559
+    pub between: COND_OP,between
91,1585
+pub enum COND_OP {COND_OP
95,1631
+    EQ,EQ
96,1650
+    NE,NE
97,1658
+impl<'a> Value<'a> {Value
100,1669
+    pub fn unwrap(&self) -> String {unwrap
101,1690
+
+src/parse/mod.rs,21
+pub mod ast;ast
1,0

src/#main.rs#

@@ -0,0 +1,66 @@
+#![allow(warnings)]
+
+pub mod lex;
+pub mod codegen;
+use crate::codegen::fasm::*;
+use crate::lex::tok::*;
+use crate::parse::ast::*;
+use crate::parse::parse::*;
+use logos::Logos;
+
+pub mod parse;
+
+macro_rules! arrow {
+    ($spaces:expr) => {
+	println!("{}↓", $spaces);
+    }
+}
+
+fn main() {
+    // let fc = fasm_codegen!(
+    // 	vec![
+    //         Expr::VarDefinition(VarDefinition {name: "goren", value: Value::Number(10)}),
+    //         Expr::MathExpr(Math {
+    //             left: &Value::Var(VarReference { name: "goren"}),
+    //             right: &Value::Number(17),
+    //             operator: MathOperator::OP_MULT
+    //         }
+    //         ),
+    //         Expr::FunDefinition(FunDefinition {
+    //             name: "adder", contents: vec![
+    //                 Expr::MathExpr(
+    //                     Math {
+    //                         left: &Value::Param(ParamReference {param_number: 0}),
+    //                         right: &Value::Param(ParamReference {param_number: 1}),
+    //                         operator: MathOperator::OP_ADD
+    //                     }
+    //                 )
+    //             ]
+    //         }),
+
+    //         Expr::FunCall(
+    //             FunCall {
+    //                 name: "adder",
+    //                 params: vec![Value::Var(VarReference {name: "goren"}), Value::Number(6)]
+    //             }
+    //         ),
+            
+    //         Expr::Breakpoint
+    // 	]
+    // );
+
+    
+    // println!("{}", fc);
+    let parsed = "30 * 60";
+
+    let mut lexer = Token::lexer(parsed);
+    
+    println!("\"{}\"", parsed);
+    arrow!("    ");
+    println!("{:?}", lex_str(parsed));
+    arrow!("                        ");
+    let parsed = parse_math(lexer);
+    println!("{:?}", parsed);
+    arrow!("                                      ");
+    println!("{}", fasm_codegen!(&vec![parsed.unwrap()]));
+}

src/codegen/fasm.rs

@@ -1,256 +1,234 @@
 use crate::parse::ast::*;
-use skylang::temp;
 use std::rc::Rc;
+use skylang::temp;
 
-#[derive(Debug)]
-pub struct FasmCodegen;
+#[macro_export]
+macro_rules! fasm_codegen {
+    // Macro to make calling fasm_codegen function easier.
+    ($exprs:expr) => {
+	fasm_codegen($exprs, true)
+    };
 
-impl FasmCodegen {
-    pub fn new() -> Self {
-	FasmCodegen
+    (fun: $exprs:expr) => {
+	fasm_codegen($exprs, false)
+    }
+}
+
+pub fn fasm_codegen(exprs: &Vec<Expr>, not_a_function: bool) -> String {
+    // Define asm_func, used for functions.
+    let mut asm_func = String::new();
+    // Define asm_data, used for variables.
+    let mut asm_data = String::new();
+    // Define asm_start, used for the entry point.
+    let mut asm_start = String::new();
+    macro_rules! unwrap {
+	($item:expr) => {
+	    asm_start.push_str(fasm_codegen!(fun: &vec![$item.as_ref().clone()]).as_str());
+	}
+    }
+
+
+    // If not_a_function, push necessary headers to the asm_start variable.
+    if not_a_function {
+	asm_start.push_str("format ELF64 executable 3\n");
+	asm_start.push_str("segment readable executable\n");
+	asm_start.push_str("entry _start\n");
+	asm_start.push_str("_start:\n");
+	asm_data.push_str("\nsegment readable writable\n");
     }
     
-    pub fn fasm_codegen(&mut self, exprs: &Vec<Expr>, not_a_function: bool) -> String {
-	macro_rules! fasm_codegen {
-	    // Macro to make calling fasm_codegen function easier.
-	    ($exprs:expr) => {{
-		self.fasm_codegen($exprs, true)
-	    }};
-         
-	    (fun: $exprs:expr) => {{
-		self.fasm_codegen($exprs, false)
-	    }};
-	}
-	
-	// Define asm_func, used for functions.
-	let mut asm_func = String::new();
-	// Define asm_data, used for variables.
-	let mut asm_data = String::new();
-	// Define asm_start, used for the entry point.
-	let mut asm_start = String::new();
-	macro_rules! unwrap {
-	    ($item:expr) => {
-		asm_start.push_str(fasm_codegen!(fun: &vec![$item.as_ref().clone()]).as_str());
-	    }
-	}
+    // Iterate over expressions.
+    for expr in exprs.iter() {
+	// Use patern matching on `expr`.
+	match expr {
+	    // If the expression is a math expression.
+	    Expr::MathExpr(e) => {
+		unwrap!(e.left);
+		asm_start.push_str(format!("\tmov r10, rax\n").as_str());
+		unwrap!(e.right);
+		asm_start.push_str(format!("\tmov r11, rax\n").as_str());
+		match e.operator {
+		    // If the operator is addition.
+		    MathOperator::OP_ADD  => {
+			asm_start.push_str("\tadd r10, r11\n");
+			asm_start.push_str("\tmov rax, r10\n");
+			// r10 ← r10 + r11; rax ← r10;
+			// The sum will now be stored in the %rax register.
+		    },
+		    // If the operator is multiplication.
+		    MathOperator::OP_MULT => {
+			asm_start.push_str("\timul r10, r11\n");
+			asm_start.push_str("\tmov rax, r10\n");
+			// r10 ← r10 * r11; rax ← r10;
+			// The product will now be stored in the %rax register.
+		    },
+		    // If the operator is division.
+		    MathOperator::OP_DIV  => {
+			asm_start.push_str("\tmov rax, r10\n");
+			asm_start.push_str("\txor rdx, rdx\n");
+			asm_start.push_str("\tidiv r11\n");
+			// rax ← r10; rdx ← 0; rax ← concat(rax, rdx) / r11;
+			// The quotient will now be stored in the %rax register.
+		    },
+		    // If the operators is subtraction.
+		    MathOperator::OP_SUB  => {
+			asm_start.push_str("\tsub r10, r11\n");
+			asm_start.push_str("\tmov rax, r10\n");
+			// r10 ← r10 - r11; rax ← r10;
+			// The difference will now be stored in the %rax register.
+		    },
+		    // If the operator is modulo.
+		    MathOperator::OP_MOD  => {
+			asm_start.push_str("\tmov rax, r10\n");
+			asm_start.push_str("\txor rdx, rdx\n");
+			asm_start.push_str("\tidiv r11\n");
+			asm_start.push_str("\tmov rax, rdx\n");
+			// rax ← r10; rdx ← 0; rdx ← concat(rax, rdx) % r11; rax ← rdx;
+			// The remainder will now be stored in the %rax register.
+		    }
+		}
+	    },
 
-
-	// If not_a_function, push necessary headers to the asm_start variable.
-	if not_a_function {
-	    asm_start.push_str("format ELF64 executable 3\n");
-	    asm_start.push_str("segment readable executable\n");
-	    asm_start.push_str("entry _start\n");
-	    asm_start.push_str("_start:\n");
-	    asm_data.push_str("\nsegment readable writable\n");
-	}
-	
-	// Iterate over expressions.
-	for expr in exprs.iter() {
-	    // Use patern matching on `expr`.
-	    match expr {
-		// If the expression is a math expression.
-		Expr::MathExpr(e) => {
-		    unwrap!(e.right);
-		    asm_start.push_str("\tpush rax\n");
-		    unwrap!(e.left);
-		    asm_start.push_str("\tpush rax\n");
-		    match e.operator {
-			// If the operator is addition.
-			MathOperator::OP_ADD  => {
-			    asm_start.push_str("\tpop r10\n");
-			    asm_start.push_str("\tpop r11\n");
-			    asm_start.push_str("\tadd r10, r11\n");
-			    asm_start.push_str("\tmov rax, r10\n");
-
-			    // r10 ← r10 + r11; rax ← r10;
-			    // The sum will now be stored in the %rax register.
+	    // If the expression is a function call.
+	    Expr::FunCall(e) => {
+		for (i, p) in e.params.iter().enumerate() {
+		    match i {
+			0 => {
+			    // First parameter. Put in %rdi.
+			    unwrap!(p);
+			    asm_start.push_str(format!("\tmov rdi, rax\n").as_str());
+			    // rdi ← e.params[0];
 			},
-			// If the operator is multiplication.
-			MathOperator::OP_MULT => {
-			    asm_start.push_str("\tpop r10\n");
-			    asm_start.push_str("\tpop r11\n");
-			    asm_start.push_str("\timul r10, r11\n");
-			    asm_start.push_str("\tmov rax, r10\n");
 
-			    // r10 ← r10 * r11; rax ← r10;
-			    // The product will now be stored in the %rax register.
+			1 => {
+			    // Second parameter. Put in %rsi.
+			    unwrap!(p);
+			    asm_start.push_str(format!("\tmov rsi, rax\n").as_str());
+			    // rsi ← e.params[1];
 			},
-			// If the operator is division.
-			MathOperator::OP_DIV  => {
-			    asm_start.push_str("\tpop r10\n");
-			    asm_start.push_str("\tpop r11\n");
-			    asm_start.push_str("\tmov rax, r10\n");
-			    asm_start.push_str("\txor rdx, rdx\n");
-			    asm_start.push_str("\tidiv r11\n");
-			    // rax ← r10; rdx ← 0; rax ← concat(rax, rdx) / r11;
-			    // The quotient will now be stored in the %rax register.
-			},
-			// If the operators is subtraction.
-			MathOperator::OP_SUB  => {
-			    asm_start.push_str("\tpop r10\n");
-			    asm_start.push_str("\tpop r11\n");
-			    asm_start.push_str("\tsub r10, r11\n");
-			    asm_start.push_str("\tmov rax, r10\n");
 
-			    // r10 ← r10 - r11; rax ← r10;
-			    // The difference will now be stored in the %rax register.
+			2 => {			    
+			    // Third parameter. Put in %rdx.
+			    unwrap!(p);
+			    asm_start.push_str(format!("\tmov rdx, rax\n").as_str());
+			    // rdx ← e.params[2];
 			},
-			// If the operator is modulo.
-			MathOperator::OP_MOD  => {
-			    asm_start.push_str("\tpop r10\n");
-			    asm_start.push_str("\tpop r11\n");
-			    asm_start.push_str("\tmov rax, r10\n");
-			    asm_start.push_str("\txor rdx, rdx\n");
-			    asm_start.push_str("\tidiv r11\n");
-			    asm_start.push_str("\tmov rax, rdx\n");
-			    // rax ← r10; rdx ← 0; rdx ← concat(rax, rdx) % r11; rax ← rdx;
-			    // The remainder will now be stored in the %rax register.
+
+			3 => {
+			    // Fourth parameter. Put in %rcx.
+			    unwrap!(p);
+			    asm_start.push_str(format!("\tmov rcx, rax\n").as_str());
+			    // rcx ← e.params[3];
+			},
+
+			4 => {
+			    // Fifth parameter. Put in %r8.
+			    unwrap!(p);
+			    asm_start.push_str(format!("\tmov r8, rax").as_str());
+			    // r8 ← e.params[4];
+			},
+
+			5 => {
+			    // Sixth parameter. Put in %r9.
+			    unwrap!(p);
+			    asm_start.push_str(format!("\tmov r9, rax\n").as_str());
+			    // r9 ← e.params[5];
+			},
+
+			_ => {
+			    // Parameters after the sixth parameter are pushed to the stack.
+			    unwrap!(p);
+			    asm_start.push_str(format!("\tpush rax\n").as_str());
+			    // STACK_TOP ← e.params[(6+)];
 			}
 		    }
-		},
+		}
 
-		// If the expression is a function call.
-		Expr::FunCall(e) => {
-		    for (i, p) in e.params.iter().enumerate() {
-			match i {
-			    0 => {
-				// First parameter. Put in %rdi.
-				unwrap!(p);
-				asm_start.push_str("\tmov rdi, rax\n".to_string().as_str());
-				// rdi ← e.params[0];
-			    },
+		// Call the function.
+		asm_start.push_str(format!("\tcall {}\n", e.name).as_str());
+	    },
 
-			    1 => {
-				// Second parameter. Put in %rsi.
-				unwrap!(p);
-				asm_start.push_str("\tmov rsi, rax\n".to_string().as_str());
-				// rsi ← e.params[1];
-			    },
+	    // Define a global variable.
+	    Expr::GlobalDefinition(e) => {
+		// Define a 64-bit global variable.
+		
+		asm_data.push_str(format!("\t{} dq {}", e.name, e.value).as_str());
+	    },
 
-			    2 => {			    
-				// Third parameter. Put in %rdx.
-				unwrap!(p);
-				asm_start.push_str("\tmov rdx, rax\n".to_string().as_str());
-				// rdx ← e.params[2];
-			    },
+	    // Breakpoint.
+	    Expr::Breakpoint       => {
+		// Write the interrupt for a debugger breakpoint.
+		asm_start.push_str("\tint3\n");
+	    },
 
-			    3 => {
-				// Fourth parameter. Put in %rcx.
-				unwrap!(p);
-				asm_start.push_str("\tmov rcx, rax\n".to_string().as_str());
-				// rcx ← e.params[3];
-			    },
+	    // Return something from a function.
+	    Expr::Return(e)        => {
+		// Do the operation that should later be returned.
+		asm_start.push_str(fasm_codegen!(fun: &e).as_str());
+		// Move the return value to rbp + 8.
+		// [rbp + 8] ← return_value
+	    },
 
-			    4 => {
-				// Fifth parameter. Put in %r8.
-				unwrap!(p);
-				asm_start.push_str("\tmov r8, rax".to_string().as_str());
-				// r8 ← e.params[4];
-			    },
+	    // A function defenition.
+            Expr::FunDefinition(e) => {
+		// In x86-64 assembly, a function is defined as <function_name>:. Push this to the `asm_func`.
+                asm_func.push_str(format!("{}:\n", e.name).as_str());
+		// Call the function itself specifying that you are defining a function, and push the returned value to `asm_func`.
+	        asm_func.push_str(fasm_codegen!(fun: &e.contents).as_str());
+		// Use the ret instruction to return from the procedure.
+                asm_func.push_str("\tret\n");
+            },
 
-			    5 => {
-				// Sixth parameter. Put in %r9.
-				unwrap!(p);
-				asm_start.push_str("\tmov r9, rax\n".to_string().as_str());
-				// r9 ← e.params[5];
-			    },
+	    Expr::If(e) => {
+		// Increment the temporary variable/function counter.
+		// Compare the left and right value.
+		unwrap!(e.left);
+		asm_start.push_str("mov rdi, rax");
+		unwrap!(e.right);
+		asm_start.push_str("mov rsi, rax");
+		asm_start.push_str(format!("\tcmp rdi, rsi\n").as_str());
+		// Check what the condition is.
+		match e.cond {
+		    COND_OP::EQ => {
+			// If the compared values are equal to each other jump to the temporary function.
+			asm_start.push_str(format!("je .{}", temp!()).as_str());
+		    },
 
-			    _ => {
-				// Parameters after the sixth parameter are pushed to the stack.
-				unwrap!(p);
-				asm_start.push_str("\tpush rax\n".to_string().as_str());
-				// STACK_TOP ← e.params[(6+)];
-			    }
-			}
+		    COND_OP::NE => {
+			// If the compared values are not equal to eachother jump to the temporary function.
+			asm_start.push_str(format!("jne .{}", temp!()).as_str());
 		    }
+		}
 
-		    // Call the function.
-		    asm_start.push_str(format!("\tcall {}\n", e.name).as_str());
-		},
+		// Create the temporary function.
+                asm_func.push_str(format!(".{}:\n", temp!()).as_str());
+	        asm_func.push_str(fasm_codegen!(fun: &e.action).as_str());
+                asm_func.push_str("\tret\n");
 
-		// Define a global variable.
-		Expr::GlobalDefinition(e) => {
-		    // Define a 64-bit global variable.
-		    
-		    asm_data.push_str(format!("\t{} dq {}", e.name, e.value).as_str());
-		},
-
-		// Breakpoint.
-		Expr::Breakpoint       => {
-		    // Write the interrupt for a debugger breakpoint.
-		    asm_start.push_str("\tint3\n");
-		},
-
-		// Return something from a function.
-		Expr::Return(e)        => {
-		    // Do the operation that should later be returned.
-		    asm_start.push_str(fasm_codegen!(fun: &e).as_str());
-		    // Move the return value to rbp + 8.
-		    // [rbp + 8] ← return_value
-		},
-
-		// A function defenition.
-		Expr::FunDefinition(e) => {
-		    // In x86-64 assembly, a function is defined as <function_name>:. Push this to the `asm_func`.
-                    asm_func.push_str(format!("{}:\n", e.name).as_str());
-		    // Call the function itself specifying that you are defining a function, and push the returned value to `asm_func`.
-	            asm_func.push_str(fasm_codegen!(fun: &e.contents).as_str());
-		    // Use the ret instruction to return from the procedure.
-                    asm_func.push_str("\tret\n");
-		},
-
-		Expr::If(e) => {
-		    // Increment the temporary variable/function counter.
-		    // Compare the left and right value.
-		    unwrap!(e.left);
-		    asm_start.push_str("mov rdi, rax");
-		    unwrap!(e.right);
-		    asm_start.push_str("mov rsi, rax");
-		    asm_start.push_str("\tcmp rdi, rsi\n".to_string().as_str());
-		    // Check what the condition is.
-		    match e.cond {
-			COND_OP::EQ => {
-			    // If the compared values are equal to each other jump to the temporary function.
-			    asm_start.push_str(format!("je .{}", temp!()).as_str());
-			},
-
-			COND_OP::NE => {
-			    // If the compared values are not equal to eachother jump to the temporary function.
-			    asm_start.push_str(format!("jne .{}", temp!()).as_str());
-			}
-		    }
-
-		    // Create the temporary function.
-                    asm_func.push_str(format!(".{}:\n", temp!()).as_str());
-	            asm_func.push_str(fasm_codegen!(fun: &e.action).as_str());
-                    asm_func.push_str("\tret\n");
-
-		},
-		Expr::Number(n) => {
-		    asm_func.push_str(format!("\tmov rax, {}\n", n).as_str())
-		},
-		no => unsafe {
-		    // Write some data I randomly typed to your memory because don't going around playing with something that I haven't implemented yet.
-		    println!("{:?} is not. implemented.", no);
-		    let ptr = std::ptr::null_mut::<f64>();
-		    ::std::ptr::write(ptr, 124010240120401240.12410240124120401240);
-		},
-	    }
-            
+	    },
+	    Expr::Number(n) => {
+		asm_func.push_str(format!("\tmov rax, {}\n", n).as_str())
+	    },
+	    no => unsafe {
+		// Write some data I randomly typed to your memory because don't going around playing with something that I haven't implemented yet.
+		println!("{:?} is not. implemented.", no);
+		let mut ptr = 0x00 as *mut f64;
+		::std::ptr::write(ptr, 124010240120401240.12410240124120401240);
+	    },
 	}
-	
-
-	if not_a_function {
-	    // Use the exit syscall to leave the program. If you don't do this, you will get a segmentation fault.
-            asm_start.push_str("\tmov rax, 60    ; 60 is the system call number for exit.\n");
-            asm_start.push_str("\txor rdi, rdi   ; 0 is the exit code we want.\n");
-            asm_start.push_str("\tsyscall        ; this is the instruction to actually perform the system call.\n");
-	}
-	// Get the final `asm` string derived from all of the other strings that we have manipulated (finally!).
-	let asm = format!("{}{}{}", asm_start, asm_func, asm_data);
-	// Return the final `asm` string.
-	
-	asm
+        
     }
+    
 
+    if not_a_function {
+	// Use the exit syscall to leave the program. If you don't do this, you will get a segmentation fault.
+        asm_start.push_str("\tmov rax, 60    ; 60 is the system call number for exit.\n");
+        asm_start.push_str("\txor rdi, rdi   ; 0 is the exit code we want.\n");
+        asm_start.push_str("\tsyscall        ; this is the instruction to actually perform the system call.\n");
+    }
+    // Get the final `asm` string derived from all of the other strings that we have manipulated (finally!).
+    let asm = format!("{}{}{}", asm_start, asm_func, asm_data);
+    // Return the final `asm` string.
+    
+    asm
 }

src/codegen/holeybytes.rs

@@ -1,274 +0,0 @@
-use crate::parse::ast::*;
-use skylang::temp;
-use std::rc::Rc;
-use std::collections::HashMap;
-
-#[derive(Debug)]
-pub struct HbCodegen {
-    pc:        u32,
-    functions: HashMap<String, u32>,
-    globals:   HashMap<String, u64>,
-}
-
-impl HbCodegen {
-    pub fn new() -> Self {
-	HbCodegen {
-	    pc: 0,
-	    functions: HashMap::new(),
-	    globals: HashMap::new()
-	}
-    }
-    
-    pub fn hb_codegen(&mut self, exprs: &Vec<Expr>) -> &[u8] {
-	let mut gen: Vec<u8> = Vec::new();
-	
-	macro_rules! unwrap {
-	    ($item:expr) => {
-		ins!({ self.hb_codegen(&vec![Rc::unwrap_or_clone($item)]) });
-	    };
-	    
-	    (norc $item:expr) => {
-		ins!(*{ self.hb_codegen(&vec![$item]) });
-	    }
-	}
-
-	macro_rules! ins {
-	    ($ins:expr) => {
-		let ins = $ins;
-		let new_pc = self.pc.wrapping_add(ins.len() as u32);
-		gen.extend_from_slice(&ins);
-		self.pc = new_pc;
-	    };
-
-	    ($($ins:expr);+) => {
-		$(
-		    let ins = { $ins };
-		    let new_pc = self.pc.wrapping_add(ins.len() as u32);
-		    gen.extend_from_slice(&ins);
-		    self.pc = new_pc;
-		)+
-	    }
-
-	}
-	
-	// Iterate over expressions.
-	for expr in exprs.iter() {
-	    // Use patern matching on `expr`.
-	    match expr {
-		// If the expression is a math expression.
-		Expr::MathExpr(e) => {
-		    unwrap!(e.right);
-		    // st r1, r254, 0, 8; addi64 r254, r254, 8;
-		    ins!([0x4e, 1, 254, 0, 8, 0x30, 254, 254, 8]);
-		    unwrap!(e.left);
-		    // st r1, r254, 0, 8; addi64 r254, r254, 8;
-		    ins!([0x4e, 1, 254, 0, 8, 0x30, 254, 254, 8]);
-		    match e.operator {
-			// If the operator is addition.
-			MathOperator::OP_ADD  => {
-			    //  addi64 r254, r254, -8 (two's complement 0b11111000); ld r33, r254, 0, 8;
-			    ins!([0x40, 254, 254, 0b11111000, 0x4d, 33, 254, 0, 8]);
-			    
-			    //  addi64 r254, r254, -8 (two's complement 0b11111000); ld r34, r254, 0, 8;
-			    ins!([0x40, 254, 254, 0b11111000, 0x4d, 34, 254, 0, 8]);
-
-			    // add64 r1, r32, r33
-			    ins!([0x06, 1, 32, 33]);
-			},
-			// If the operator is multiplication.
-			MathOperator::OP_MULT => {
-			    //  addi64 r254, r254, -8 (two's complement 0b11111000); ld r33, r254, 0, 8;
-			    ins!([0x40, 254, 254, 0b11111000, 0x4d, 33, 254, 0, 8]);
-			    
-			    //  addi64 r254, r254, -8 (two's complement 0b11111000); ld r34, r254, 0, 8;
-			    ins!([0x40, 254, 254, 0b11111000, 0x4d, 34, 254, 0, 8]);
-
-			    // mul64 r1, r33, r34
-			    ins!([0x0e, 1, 33, 34]);
-			},
-			// If the operator is division.
-			MathOperator::OP_DIV  => {
-			    // addi64 r254, r254, -8 (two's complement 0b11111000); ld r33, r254, 0, 8;
-			    ins!([0x40, 254, 254, 0b11111000, 0x4d, 33, 254, 0, 8]);
-			    
-			    // addi64 r254, r254, -8 (two's complement 0b11111000); ld r34, r254, 0, 8;
-			    ins!([0x40, 254, 254, 0b11111000, 0x4d, 34, 254, 0, 8]);
-
-			    // fdiv64 r1, r33, r34
-			    ins!([0x65, 1, 33, 34]);
-			},
-			// If the operators is subtraction.
-			MathOperator::OP_SUB  => {
-			    //  addi64 r254, r254, -8 (two's complement 0b11111000); ld r33, r254, 0, 8;
-			    ins!([0x40, 254, 254, 0b11111000, 0x4d, 33, 254, 0, 8]);
-			    
-			    //  addi64 r254, r254, -8 (two's complement 0b11111000); ld r34, r254, 0, 8;
-			    ins!([0x40, 254, 254, 0b11111000, 0x4d, 34, 254, 0, 8]);
-
-			    // sub64 r1, r33, r34
-			    ins!([0x0a, 1, 33, 34]);
-			},
-			// If the operator is modulo.
-			MathOperator::OP_MOD  => {
-			    // addi64 r254, r254, -8 (two's complement 0b11111000); ld r33, r254, 0, 8;
-			    ins!([0x40, 254, 254, 0b11111000, 0x4d, 33, 254, 0, 8]);
-			    
-			    // addi64 r254, r254, -8 (two's complement 0b11111000); ld r34, r254, 0, 8;
-			    ins!([0x40, 254, 254, 0b11111000, 0x4d, 34, 254, 0, 8]);
-
-			    // dirs64 r2, r1, r33, r34
-			}
-		    }
-		},
-
-		// If the expression is a function call.
-		Expr::FunCall(e) => {
-		    for (i, p) in e.params.iter().enumerate() {
-			match i {
-			    0 => {
-				unwrap!(*p);
-
-				// cp r2, r1
-				ins!([0x46, 2, 1]);
-			    },
-
-			    1 => {
-				unwrap!(*p);
-
-				// cp r3, r1
-				ins!([0x46, 3, 1]);
-			    },
-
-			    2 => {			    
-				unwrap!(*p);
-				
-			    	// cp r4, r1
-				ins!([0x46, 4, 1]);
-			    },
-
-			    3 => {
-				unwrap!(*p);
-				// cp r5, r1
-				ins!([0x46, 5, 1]);
-
-			    },
-
-			    4 => {
-				unwrap!(*p);
-				// cp r6, r1
-				ins!([0x46, 6, 1]);
-			    },
-
-			    5 => {
-				unwrap!(*p);
-				// cp r7, r1
-				ins!([0x46, 7, 1]);
-			    },
-
-			    6 => {
-				unwrap!(*p);
-				// cp r8, r1
-				ins!([0x46, 8, 1]);
-			    },
-
-			    7 => {
-				unwrap!(*p);
-				// cp r9, r1
-				ins!([0x46, 9, 1]);
-			    },
-
-			    8 => {
-				unwrap!(*p);
-				// cp r10, r1
-				ins!([0x46, 10, 1]);
-			    },
-			    
-			    9 => {
-				unwrap!(*p);
-				// cp r11, r1
-				ins!([0x46, 11, 1]);
-			    },
-			    
-			    _ => {
-				println!("More than ten parameters are currently not supported.");
-				std::process::exit(1);
-			    }
-			}
-		    }
-		    
-		    ins!([0x53]; unsafe { std::mem::transmute::<u32, [u8; 4]>(self.pc.wrapping_sub(self.functions[e.name])) });
-		},
-		
-		// Define a global variable.
-		Expr::GlobalDefinition(e) => {
-		    // Define a 64-bit global variable.
-		    
-		    println!("Global variables are currently unsupported.");
-		    std::process::exit(1);
-		},
-		
-		// Breakpoint.
-		Expr::Breakpoint       => {
-		    // Write the interrupt for a debugger breakpoint.
-		    ins!([0]);
-		},
-
-		// Return something from a function.
-		Expr::Return(e)        => {
-		    // Do the operation that should later be returned.
-
-		    println!("Returns are currently not supported, (i was too lazy to implement)");
-		    std::process::exit(1);
-		},
-
-		// A function defenition.
-		Expr::FunDefinition(e) => {
-		    self.functions.insert(e.name.to_owned(), self.pc);
-
-		     ins!(&self.hb_codegen(&e.contents).to_vec());
-		},  
-		    
-		Expr::If(e) => {
-		    // Increment the temporary variable/function counter.
-		    // Compare the left and right value.
-		    unwrap!(e.left);
-		    // st r1, r254, 0, 8; addi64 r254, r254, 8;
-		    ins!([0x4e, 1, 254, 0, 8, 0x30, 254, 254, 8]);
-		    unwrap!(e.right);
-		    // st r1, r254, 0, 8; addi64 r254, r254, 8;
-		    ins!([0x4e, 1, 254, 0, 8, 0x30, 254, 254, 8]);
-		    
-		    let action = self.pc;
-		    ins!(&self.hb_codegen(&e.action).to_vec());
-		    // Check what the condition is.
-		    match e.cond {
-			COND_OP::EQ => {
-			    // If the compared values are equal to each other jump to the temporary function.
-			    ins!([0x56]; unsafe { std::mem::transmute::<u32, [u8; 4]>(self.pc.wrapping_sub(action)) });
-
-			},
-
-			COND_OP::NE => {
-			    // If the compared values are not equal to eachother jump to the temporary function.
-			    ins!([0x57]; unsafe { std::mem::transmute::<u32, [u8; 4]>(self.pc.wrapping_sub(action)) });
-			}
-		    }
-		},
-		Expr::Number(n) => {
-		    ins!([0x4b, 1]; unsafe { ::core::mem::transmute::<u64, [u8; 8]>(*n) });
-		},
-		no => unsafe {
-		    // Write some data I randomly typed to your memory because don't going around playing with something that I haven't implemented yet.
-		    println!("{:?} is not. implemented. prepare to be destroyed >:-(", no);
-		    let ptr = std::ptr::null_mut::<f64>();
-		    ::std::ptr::write(ptr, 124010240120401240.12410240124120401240);
-		},
-	    }
-            
-	}
-	
-
-	&gen
-    }
-
-}

src/codegen/mod.rs

@@ -1,2 +1 @@
-pub mod holeybytes;
 pub mod fasm;

src/lex/mod.rs~

@@ -0,0 +1 @@
+pub mod tok;

src/lex/parse.rs~

@@ -0,0 +1,149 @@
+#![allow(unused)]
+
+use super::tok::*;
+
+
+fn check_single_char<'a>(word: &'a str) -> Option<Token<'a>> {
+    macro_rules! tok {
+	($tt:expr) => {
+	    Some(Token::new($tt, word))
+	};
+    };
+
+    let tok = match word {
+	";" => tok!(Semicolon),
+	"=" => tok!(Equal),
+	"(" => tok!(LeftParen),
+	")" => tok!(RightParen),
+	"{" => tok!(LeftBrace),
+	"}" => tok!(RightBrace),
+	"," => tok!(Comma),
+        "." => tok!(Dot),
+        "-" => tok!(Minus),
+        "+" => tok!(Plus),
+        "/" => tok!(Slash),
+        "*" => tok!(Star),
+        "%" => tok!(Percent),
+        "!" => tok!(Bang),
+        ":" => tok!(Colon),
+        "<" => tok!(Less),
+        ">" => tok!(Greater),
+
+	_ => None
+    };
+
+    tok
+}
+
+fn check_keyword<'a>(word: &'a str) -> Option<Token<'a>> {
+    macro_rules! tok {
+	($tt:expr) => {
+	    Some(Token::new($tt, word))
+	};
+    };
+    
+    let tok = match word {
+        "fn" => tok!(Fn),
+        "let" => tok!(Let),
+        "if" => tok!(If),
+        "else" => tok!(Else),
+        "while" => tok!(While),
+        "elif" => tok!(Elif),
+        "return" => tok!(Return),
+        "for" => tok!(For),
+        "in" => tok!(In),
+        "break" => tok!(Break),
+        "continue" => tok!(Continue),
+        "true" => tok!(True),
+        "false" => tok!(False),
+
+        _ => None
+    };
+
+    tok
+}
+
+fn check_two_char<'a>(word: &'a str) -> Option<Token<'a>> {
+    macro_rules! tok {
+        ($tt:expr) => {
+            Some(Token::new($tt, word))
+        };
+    };
+
+    let tok = match word {
+        "==" => tok!(EqualEqual),
+        "!=" => tok!(BangEqual),
+        "<=" => tok!(LessEqual),
+        ">=" => tok!(GreaterEqual),
+
+        _ => None
+    };
+
+    tok
+}
+
+fn match_string_literal<'a>(word: &'a str) -> Option<Token<'a>> {
+    macro_rules! tok {
+        ($tt:expr) => {
+            Some(Token::new($tt, word))
+        };
+    };
+
+    
+    let chars = word.chars();
+
+    if word.starts_with("\"") {
+	while let Some(char) = chars.next() {
+	    if char == '\"' {
+		return tok!(String);
+	    }
+	}
+    }
+    if word.starts_with("\'") {
+	while let Some(char) = chars.next() {
+	    if char == '\'' {
+		return tok!(String);
+	    }
+	}
+    }
+
+    None
+}
+
+fn match_int_literal<'a>(word: &'a str) -> Option<Token<'a>> {
+    macro_rules! tok {
+        ($tt:expr) => {
+            Some(Token::new($tt, word))
+        };
+    };
+
+    let chars = word.chars();
+
+    while let Some(char) = chars.next() {
+	if char.is_digit(10) {
+	    return tok!(Number);
+	} else {
+	    return None;
+	}
+    }
+
+    None
+}
+
+fn match_identifier<'a>(word: &'a str) -> Option<Token<'a>> {
+    macro_rules! tok {
+        ($tt:expr) => {
+            Some(Token::new($tt, word))
+        };
+    };
+
+    let chars = word.chars();
+
+    if chars.next().is_ascii_alphabetic() {
+	while let Some(char) = chars.next() {
+	    if chars.next().is_ascii() {
+		
+	    }
+	}
+    }
+}

src/lex/tok.rs

@@ -1,12 +1,11 @@
 #![allow(unused)]
-use std::string::String;
 use logos::Logos;
 use logos::Lexer;
 use core::iter::Peekable;
 
 pub use Token::*;
 
-#[derive(Debug, Logos, PartialEq, Eq, Clone)]
+#[derive(Debug, Logos, PartialEq, Eq)]
 #[logos(skip r"[ \t\n\f]+")]
 pub enum Token {
     // SINGLE CHARACTER TOKENS
@@ -85,11 +84,11 @@ pub enum Token {
     
     // LITERALS
     #[regex(r#"("[^"]*")|('[^']*')"#)]
-    StringLiteral, // A string literal.
+    String,	 // A string literal.
     #[regex("[0-9]+", |lex| lex.slice().parse().ok())]
-    Number(u64),   // An integer.
-    #[regex(r#"[^[0-9]^"^-^[ \t\n\f]^\.^=^(^)^{^}.^,^;^[+-/*%]]+[^"^-^=^\..^[ \t\n\f]^(^)^{^}^,^;^[+-/*%]]*"#, |lex| lex.slice().to_owned())]
-    Identifier(String),  // An identifier.
+    Number(u64), // An integer.
+    #[regex(r#"[^[0-9]^"^-^[ \t\n\f]^\.^=^(^)^{^}.^,^;^[+-/*%]]+[^"^-^=^\..^[ \t\n\f]^(^)^{^}^,^;^[+-/*%]]*"#)]
+    Identifier,  // An identifier.
     #[token("true")]
     True,	 // true
     #[token("false")]
@@ -107,51 +106,3 @@ pub fn lex_str(this: &str) -> Vec<(Token, &str)> {
 
     buf
 }
-
-
-impl std::fmt::Display for Token {
-    fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
-        match self {
-            Semicolon => write!(f, ";"),
-            Equal => write!(f, "="),
-            LeftParen => write!(f, "("),
-            RightParen => write!(f, ")"),
-            LeftBrace => write!(f, "{{"),
-            RightBrace => write!(f, "}}"),
-            Comma => write!(f, ","),
-            Dot => write!(f, "."),
-            Minus => write!(f, "-"),
-            Plus => write!(f, "+"),
-            Slash => write!(f, "/"),
-            Star => write!(f, "*"),
-            Percent => write!(f, "%"),
-            Bang => write!(f, "!"),
-            Colon => write!(f, ":"),
-            Less => write!(f, "<"),
-            Greater => write!(f, ">"),
-            Pipe => write!(f, "|"),
-            Fnaf => write!(f, "fnaf"),
-            Let => write!(f, "let"),
-            Global => write!(f, "global"),
-            If => write!(f, "if"),
-            Else => write!(f, "else"),
-            While => write!(f, "while"),
-            Elif => write!(f, "elif"),
-            Return => write!(f, "return"),
-            For => write!(f, "for"),
-            In => write!(f, "in"),
-            Break => write!(f, "break"),
-            Continue => write!(f, "continue"),
-            EqualEqual => write!(f, "=="),
-            BangEqual => write!(f, "!="),
-            LessEqual => write!(f, "<="),
-            GreaterEqual => write!(f, ">="),
-            StringLiteral => write!(f, "string"),
-            Number(n) => write!(f, "{}", n),
-            Identifier(i) => write!(f, "{}", i),
-            True => write!(f, "true"),
-            False => write!(f, "false"),
-            Null => write!(f, "none"),
-        }
-    }
-}

src/lex/tok.rs~

@@ -0,0 +1,124 @@
+#![allow(unused)]
+pub use TokenType::*;
+use super::parse::*;
+
+#[derive(Debug)]
+pub struct Token<'a> {
+    tt: TokenType,
+    word: &'a str,
+}
+
+#[derive(Debug)]
+pub enum TokenType {
+    EOF,
+
+    // SINGLE CHARACTER TOKENS
+    Semicolon,	// ;
+    Equal,	// =
+    LeftParen,	// (
+    RightParen, // )
+    LeftBrace,	// {
+    RightBrace, // }
+    Comma,	// ,
+    Dot,	// .
+    Minus,	// -
+    Plus,	// +
+    Slash,	// /
+    Star,	// *
+    Percent,	// %
+    Bang,	// !
+    Colon,	// :
+    Less,	// <
+    Greater,	// >
+
+    // KEYWORDS
+    Fn,		// fn
+    Let,	// let
+    If,		// if
+    Else,	// else
+    While,	// while
+    Elif,	// elif
+    Return,	// return
+    For,	// for
+    In,		// in
+    Break,	// break
+    Continue,	// continue
+
+    // TWO CHARACTER TOKENS
+    EqualEqual,		// ==
+    BangEqual,		// !=
+    LessEqual,		// <=
+    GreaterEqual,	// >=
+    
+    // LITERALS
+    String,	// A string literal.
+    Number,	// An integer.
+    Identifier, // An identifier.
+    True,	// true
+    False,	// false
+    Null,	// None
+
+    // ERROR
+    Error, // A syntax error.
+}
+
+#[derive(Debug)]
+pub struct Lexer<'a> {
+    source: &'a str,
+    tokens: Vec<Token<'a>>,
+    current: usize,
+    after: &'a str
+}
+
+impl<'a> Lexer<'a> {
+    pub fn new() -> Self {
+        Lexer {
+            source: "",
+            tokens: Vec::new(),
+            current: 0,
+            after: ""
+        }
+    }
+}
+
+impl<'a> std::iter::Iterator for Lexer<'a> {
+    
+}
+
+impl<'a> From<&'a str> for Lexer<'a> {
+    fn from(value: &'a str) -> Self {
+        Lexer {
+            source: value,
+            tokens: Vec::new(),
+            current: 0,
+            after: value 
+        }
+    }
+}
+
+impl<'a> From<&'a std::string::String> for Lexer<'a> {
+    fn from(value: &'a std::string::String) -> Self {
+	Lexer {
+            source: value.as_str(),
+            tokens: Vec::new(),
+            current: 0,
+            after: value.as_str()
+	} 
+    }
+}
+
+impl<'a> Token<'a> {
+    pub fn new(tt: TokenType, word: &'a str) -> Self {
+	Token {
+	    tt,
+	    word
+	}
+    }
+
+    pub fn empty() -> Self {
+	Token {
+	    tt: EOF,
+	    word: ""
+	}
+    }
+}

src/main.rs

@@ -1,12 +1,10 @@
 #![allow(warnings)]
-#![feature(unsized_locals)]
-#![feature(arc_unwrap_or_clone)]
-#![feature(associated_type_bounds)]
+
 pub mod lex;
 pub mod codegen;
 use crate::codegen::fasm::*;
 use crate::lex::tok::*;
-
+use crate::parse::ast::*;
 use crate::parse::parse::*;
 use logos::Logos;
 
@@ -19,17 +17,51 @@ macro_rules! arrow {
 }
 
 fn main() {
-    let mut args = std::env::args();
-    let (_, parsed) = (args.next(), args.next().unwrap());
-    let mut lexer = Token::lexer(parsed.as_str());
+    // let fc = fasm_codegen!(
+    // 	vec![
+    //         Expr::VarDefinition(VarDefinition {name: "goren", value: Value::Number(10)}),
+    //         Expr::MathExpr(Math {
+    //             left: &Value::Var(VarReference { name: "goren"}),
+    //             right: &Value::Number(17),
+    //             operator: MathOperator::OP_MULT
+    //         }
+    //         ),
+    //         Expr::FunDefinition(FunDefinition {
+    //             name: "adder", contents: vec![
+    //                 Expr::MathExpr(
+    //                     Math {
+    //                         left: &Value::Param(ParamReference {param_number: 0}),
+    //                         right: &Value::Param(ParamReference {param_number: 1}),
+    //                         operator: MathOperator::OP_ADD
+    //                     }
+    //                 )
+    //             ]
+    //         }),
+
+    //         Expr::FunCall(
+    //             FunCall {
+    //                 name: "adder",
+    //                 params: vec![Value::Var(VarReference {name: "goren"}), Value::Number(6)]
+    //             }
+    //         ),
+            
+    //         Expr::Breakpoint
+    // 	]
+    // );
+
+    
+    // println!("{}", fc);
+    let parsed = "30 * 60";
+
+    let mut lexer = Token::lexer(parsed);
+    
     println!("\"{}\"", parsed);
     arrow!("    ");
-    println!("{:?}", lex_str(parsed.as_str()));
+    println!("{:?}", lex_str(parsed));
     arrow!("                        ");
     let parsed = parse_math(lexer);
     println!("{:?}", parsed);
     arrow!("                                      ");
-    let mut code = FasmCodegen::new(); 
-    println!("{}", code.fasm_codegen(&vec![parsed.unwrap()], true));
+    println!("{}", fasm_codegen!(&vec![parsed.unwrap()]));
 }
 

src/main.rs~

@@ -0,0 +1,5 @@
+pub mod lex;
+
+fn main() {
+    println!("{:?}", lex::parse::match_identifier("goren-"));
+}

src/parse/parse.rs

@@ -10,43 +10,92 @@ macro_rules! unwrap {
     }
 }
 
-pub fn expect_number(n: Option<Result<Token, ()>>) -> Expr<'static> {
-    match n {
-	Some(Ok(Number(res))) => Expr::Number(res),
-	Some(Ok(tok)) => {
-	    println!("Expected a number, got: {}", tok);
-	    std::process::exit(1);
-	}
-	_ => {
-	    println!("Expected a number, got EOF");
-	    std::process::exit(1);
-	}
+#[macro_export]
+macro_rules! parse_value {
+    ($parse:expr) => {
+	parse_value(&($parse.next(), $parse.slice()))
     }
 }
 
 pub fn parse_math(mut tokens: Lexer<Token>) -> Option<Expr> {
-    let mut left = expect_number(tokens.next());
-    
-    loop {
-	let op = tokens.next();
-	if !match_operator(&op).is_some() { break }
-	let right = expect_number(tokens.next());
-	left = Expr::MathExpr(Math {left: Rc::new(left), right: Rc::new(right), operator: match_operator(&op)?});
-    }
-    Some(left)
-}
+    // Is it a Value? → Is it an operator? → Is it a value?
 
-pub fn match_operator(token: &Option<Result<Token, ()>>) -> Option<MathOperator> {
-    if let Some(Ok(token)) = token {
-	return match token {
-	    Plus    => Some(MathOperator::OP_ADD),
-	    Minus   => Some(MathOperator::OP_SUB),
-	    Slash   => Some(MathOperator::OP_DIV),
-	    Star    => Some(MathOperator::OP_MULT),
- 	    Percent => Some(MathOperator::OP_MOD),
-	    _ => None
-	};
+    if let Some(left) = parse_value!(tokens) {
+	if let Some(operator) = match_operator(&mut tokens) {
+	    if let Some(right) = parse_value!(tokens) {
+		let left = Rc::new(left);
+		let right = Rc::new(right);
+
+		return Some(Expr::MathExpr(Math {left: left, right: right, operator}))
+	    }
+	}
     }
-    
+
     None
 }
+
+pub fn parse_global_declaration(mut tokens: Lexer<Token>) -> Option<Expr> {
+    let mut tok = None;
+    if unwrap!(tokens) == Let {
+	if unwrap!(tokens) == Identifier {
+	    let name = tokens.slice();
+
+	    println!("{:?}", name);
+	    if unwrap!(tokens) == Equal {
+		let temp_token = unwrap!(tokens);
+		if let Number(n) = temp_token {
+		    tok = Some(Expr::GlobalDefinition(Rc::new(VarDefinition {name, value: n})));
+		}
+	    }
+	}
+    }
+    tok
+}
+
+pub fn parse_value<'a>(token: &(Option<Result<Token, ()>>, &'a str)) -> Option<Expr<'a>> {
+    if let Some(Ok(tt)) = &token.0 {
+	let mut value = None;
+
+	if let Number(n) = tt {
+	    value = Some(Expr::Number(*n));
+	} else if *tt == Identifier {
+	    value = Some(Expr::Var(VarReference { name: token.1 }));
+	}
+
+	value
+
+    } else {
+	return None;
+    }
+}
+
+pub fn parse_fun_call(mut tokens: Lexer<Token>) -> Option<Expr> {
+    // Is it an Ident? → Is it a LeftParen? → Is it a value (I should really make a function to parse that) or is it a RightParen?
+    //                                              ↓                      						   ↓
+    //                            If it's a value, push that to `params`.		            Otherwise, params will just be a `Vec::new()`.
+    let mut tok = None;
+
+    if unwrap!(tokens) == Identifier {
+	let name = tokens.slice();
+	if unwrap!(tokens) == LeftParen {
+	    let mut params = Vec::new();
+	    while let Some(value) = parse_value!(tokens) {
+		params.push(Rc::new(value));
+	    }
+	    tok = Some(Expr::FunCall(FunCall {name, params: params.clone()}));
+	}
+    }
+
+    tok
+}
+
+pub fn match_operator(tokens: &mut Lexer<Token>) -> Option<MathOperator> {
+    match unwrap!(tokens) {
+	Plus    => Some(MathOperator::OP_ADD),
+	Minus   => Some(MathOperator::OP_SUB),
+	Slash   => Some(MathOperator::OP_DIV),
+	Star    => Some(MathOperator::OP_MULT),
+	Percent => Some(MathOperator::OP_MOD),
+	_ => None
+    }
+}