hmmm

src/ast/ast.rs

@@ -0,0 +1,62 @@
+/// Abstract Syntax Tree
+#[derive(Debug)]
+pub enum Expression<'src> {
+    VariableName(&'src str),
+    Integer(i64),
+    Float(f64),
+    String(String),
+    Bool(bool),
+
+    Negatation(Box<Expression<'src>>),
+    Add(Box<Expression<'src>>, Box<Expression<'src>>),
+    Substract(Box<Expression<'src>>, Box<Expression<'src>>),
+    Multiply(Box<Expression<'src>>, Box<Expression<'src>>),
+    Divide(Box<Expression<'src>>, Box<Expression<'src>>),
+    
+    Var {
+        name: &'src str,
+        rhs: Box<Expression<'src>>,
+        then: Box<Expression<'src>>,
+    },
+
+    Function {
+        name: &'src str,
+        args: Vec<&'src str>,
+        body: Box<Expression<'src>>,
+        then: Box<Expression<'src>>,
+    },
+
+    Unit
+}
+
+impl<'src> Expression<'src> {
+    pub fn evaluate(&self) -> String {
+        match self {
+            Expression::VariableName(_) => todo!(),
+
+            Expression::Integer(_) => todo!(),
+
+            Expression::Float(_) => todo!(),
+
+            Expression::String(_) => todo!(),
+
+            Expression::Bool(_) => todo!(),
+
+            Expression::Negatation(expression) => todo!(),
+
+            Expression::Add(expression, expression1) => todo!(),
+
+            Expression::Substract(expression, expression1) => todo!(),
+
+            Expression::Multiply(expression, expression1) => todo!(),
+
+            Expression::Divide(expression, expression1) => todo!(),
+
+            Expression::Var { name, rhs, then } => todo!(),
+
+            Expression::Function { name, args, body, then } => todo!(),
+
+            Expression::Unit => todo!(),
+        }
+    }
+}

src/ast/evaluator.rs

@@ -1,33 +0,0 @@
-use crate::ast::Expression;
-
-
-
-impl<'src> Expression<'src> {
-    pub fn eval(&self) -> String {
-        match self {
-            Expression::VariableName(_) => todo!(),
-
-            Expression::Integer(_) => todo!(),
-
-            Expression::Float(_) => todo!(),
-
-            Expression::String(_) => todo!(),
-
-            Expression::Bool(_) => todo!(),
-
-            Expression::Negatation(expression) => todo!(),
-
-            Expression::Add(expression, expression1) => todo!(),
-
-            Expression::Substract(expression, expression1) => todo!(),
-
-            Expression::Multiply(expression, expression1) => todo!(),
-
-            Expression::Divide(expression, expression1) => todo!(),
-
-            Expression::Var { name, rhs, then } => todo!(),
-            
-            Expression::Function { name, args, body, then } => todo!(),
-        }
-    }
-}

src/ast/mod.rs

@@ -2,35 +2,7 @@ use std::ops::Range;
 
 use crate::ast::op::Op;
 
-
-pub mod evaluator;
 pub mod op;
+pub mod ast;
 
 
-/// Abstract Syntax Tree
-#[derive(Debug)]
-pub enum Expression<'src> {
-    VariableName(&'src str),
-    Integer(i64),
-    Float(f64),
-    String(String),
-    Bool(bool),
-
-    Negatation(Box<Expression<'src>>),
-    Add(Box<Expression<'src>>, Box<Expression<'src>>),
-    Substract(Box<Expression<'src>>, Box<Expression<'src>>),
-    Multiply(Box<Expression<'src>>, Box<Expression<'src>>),
-    Divide(Box<Expression<'src>>, Box<Expression<'src>>),
-    
-    Var {
-        name: &'src str,
-        rhs: Box<Expression<'src>>,
-        then: Box<Expression<'src>>,
-    },
-    Function {
-        name: &'src str,
-        args: Vec<&'src str>,
-        body: Box<Expression<'src>>,
-        then: Box<Expression<'src>>,
-    }
-}

src/code_generation/compiler.rs

@@ -2,28 +2,3 @@ use std::collections::HashMap;
 
 use inkwell::{builder::Builder, context::Context, module::Module, values::{FunctionValue, PointerValue}};
 
-use crate::code_generation::Function;
-
-pub struct Compiler<'a, 'ctx> {
-    pub context: &'ctx Context,
-    pub builder: &'a Builder<'ctx>,
-    pub module: &'a Module<'ctx>,
-    pub function: &'a Function,
-
-    variables: HashMap<String, PointerValue<'ctx>>,
-    fn_value_opt: Option<FunctionValue<'ctx>>
-}
-
-impl<'a, 'ctx> Compiler<'a, 'ctx> {
-    /// Gets a defined function given its name.
-    #[inline]
-    fn get_function(&self, name: &str) -> Option<FunctionValue<'ctx>> {
-        self.module.get_function(name)
-    }
-    
-    /// Returns the `FunctionValue` representing the function being compiled.
-    #[inline]
-    fn fn_value(&self) -> FunctionValue<'ctx> {
-        self.fn_value_opt.unwrap()
-    }
-}

src/code_generation/mod.rs

@@ -1,71 +1,76 @@
+use std::collections::HashMap;
+
+use inkwell::values::{BasicValueEnum, FunctionValue, PointerValue};
+
+use crate::ast::ast::Expression;
+
 pub mod compiler;
 
 // LLVM Codegen
 
+struct CodegenContext<'ctx> {
+    builder: inkwell::builder::Builder<'ctx>,
+    module: inkwell::module::Module<'ctx>,
+    context: &'ctx inkwell::context::Context,
+    variables: HashMap<String, PointerValue<'ctx>>,
+    functions: HashMap<String, FunctionValue<'ctx>>,
+}
 
-//--------------------------
-//  Parser
-//-------------------------
 
-use std::collections::HashMap;
+impl<'ctx, 'src> Expression<'src> {
+    fn codegen(&self, ctx: &mut CodegenContext<'ctx>) -> BasicValueEnum<'ctx> {
+        match self {
+            Expression::VariableName(name) => {
+                todo!()
+            },
 
-use logos::Lexer;
+            Expression::Integer(_) => {
+                todo!()
+            },
 
-use crate::tokens::Token;
+            Expression::Float(_) => {
+                todo!()
+            },
 
-/// Defines a primitive expression
-#[derive(Debug)]
-pub enum Expr {
-    Binary {
-        op: char,
-        left: Box<Expr>,
-        right: Box<Expr>,
-    },
-    Call {
-        fn_name: String,
-        args: Vec<Expr>,
-    },
-    Conditional {
-        cond: Box<Expr>,
-        consequence: Box<Expr>,
-        alternative: Box<Expr>,
-    },
-    For {
-        var_name: String,
-        start: Box<Expr>,
-        end: Box<Expr>,
-        step: Option<Box<Expr>>,
-        body: Box<Expr>,
-    },
-    Number(f64),
-    Variable(String),
-    VarIn {
-        variables: Vec<(String, Option<Expr>)>,
-        body: Box<Expr>,
+            Expression::String(_) => {
+                todo!()
+            },
+
+            Expression::Bool(_) => {
+                todo!()
+            },
+
+            Expression::Negatation(expression) => {
+                todo!()
+            },
+
+            Expression::Add(expression, expression1) => {
+                todo!()
+            },
+
+            Expression::Substract(expression, expression1) => {
+                todo!()
+            },
+
+            Expression::Multiply(expression, expression1) => {
+                todo!()
+            },
+
+            Expression::Divide(expression, expression1) => {
+                todo!()
+            },
+
+            Expression::Var { name, rhs, then } => {
+                todo!()
+            },
+
+            Expression::Function { name, args, body, then } => {
+                todo!()
+            },
+
+            Expression::Unit => {
+                todo!()
+            },
+        }
     }
-
-}
-
-
-/// Defines the prototype (name and parameters) of a function
-#[derive(Debug)]
-pub struct Prototype {
-    pub name: String,
-    pub args: Vec<String>,
-    pub is_op: bool,
-    pub prec: usize,
-}
-
-/// Defines a user-defined or external function
-#[derive(Debug)]
-pub struct Function {
-    pub prototype: Prototype,
-    pub body: Option<Expr>,
-    pub is_anon: bool,
-}
-
-pub struct Parser<'a> {
-    tokens: Vec<Token<'a>>,
-    pos: usize,
-    prec: &'a mut HashMap<char, i32>,
-}
+}

src/main.rs

@@ -33,5 +33,5 @@ fn main() {
         }
     };
 
-    println!("\n[result]\n{}", ast.eval());
+    println!("\n[result]\n{}", ast.evaluate());
 }

src/parser.rs

@@ -1,12 +1,20 @@
 use chumsky::{combinator::Or, prelude::{choice, just, recursive}, recursive, select, text::{self, ascii::ident}, IterParser, Parser};
 
-use crate::{ast::Expression, tokens::Token};
+use crate::{ast::ast::Expression, tokens::Token};
 
 
 #[allow(clippy::let_and_return)]
-pub fn parser<'src>(
-) -> impl Parser<'src, &'src [Token<'src>], Expression<'src>, chumsky::extra::Err<chumsky::error::Simple<'src, Token<'src>>>>
-{
+pub fn parser<'src>() -> impl Parser<'src, &'src [Token<'src>], Expression<'src>> {
+    let ident = select! {
+        Token::Ident(ident) => ident
+    };
+
+       let keyword = |kw: &'static str| select! {
+        Token::Keyword(k) if k == kw => ()
+    };
+
+    let eq = just(Token::Equals);
+
     let expr = recursive(
         |expr| 
         {
@@ -53,5 +61,33 @@ pub fn parser<'src>(
         binary_2
     });
 
-    expr
+    let decl = recursive(|decl| {
+        let r#var = keyword("var")
+            .ignore_then(ident.clone()) 
+            .then_ignore(eq.clone())
+            .then(decl.clone())
+            .then(decl.clone())
+            .map(|((name, rhs), then)| Expression::Var {
+                name,
+                rhs: Box::new(rhs),
+                then: Box::new(then),
+            });
+
+        let r#fun = keyword("fun")
+            .ignore_then(ident.clone())
+            .then(ident.clone().repeated().collect())
+            .then_ignore(eq.clone())
+            .then(decl.clone())
+            .then(decl.clone())
+            .map(|(((name, args), body), then)| Expression::Function {
+                name,
+                args,
+                body: Box::new(body),
+                then: Box::new(then),
+        });
+        
+        var.or(r#fun).or(expr)
+    });
+
+    decl
 }