Removed varKind in favor of mutability

parser/src/ast.rs

@@ -64,7 +64,7 @@ pub enum Statement {
 
     // let/const/var x = ...
     VarDecl {
-        kind: VarKind,
+        mutable: bool,
         name: String,
         init: Option<Expression>,
         type_: Option<TypeExpr>,
@@ -90,7 +90,7 @@ pub enum Statement {
 
     // for (...) stmt
     For {
-        init: (VarKind, String, Option<Expression>),
+        init: (bool, String, Option<Expression>),
         condition: Option<Expression>,
         update: Option<Box<Statement>>,
         body: Box<Statement>,
@@ -115,10 +115,3 @@ pub enum Expression {
         postfixes: Vec<Postfix>,
     },
 }
-
-#[derive(Debug, Clone, Serialize)]
-pub enum VarKind {
-    Let,
-    Const,
-    Var,
-}

parser/src/lib.rs

@@ -188,7 +188,7 @@ impl From<pest::iterators::Pair<'_, Rule>> for Statement {
                 let init = inner.next().map(Expression::from);
 
                 Statement::VarDecl {
-                    kind: VarKind::Var,
+                    mutable: false,
                     name: name.as_str().to_string(),
                     init,
                     type_,
@@ -243,19 +243,12 @@ impl From<pest::iterators::Pair<'_, Rule>> for Statement {
                         Rule::var_decl => {
                             let mut it = p.into_inner();
 
-                            let kind = match it.next().unwrap().as_str() {
-                                "let" => VarKind::Let,
-                                "const" => VarKind::Const,
-                                "var" => VarKind::Var,
-                                _ => unreachable!(),
-                            };
-
                             let name = it.next().unwrap().as_str().to_string();
                             let init_expr = it
                                 .next()
                                 .map(|e| Expression::from(e.into_inner().next().unwrap()));
 
-                            (kind, name, init_expr)
+                            (false, name, init_expr)
                         }
                         _ => unimplemented!(
                             "For loop init parsing not implemented yet: {:?}",

src/codegen.rs

@@ -1,4 +1,4 @@
-use parser::ast::{BinaryOp, Block, Expression, Postfix, Statement, TopLevel, TypeExpr, VarKind};
+use parser::ast::{BinaryOp, Block, Expression, Postfix, Statement, TopLevel, TypeExpr};
 
 pub struct RustCodegen {
     output: String,
@@ -129,15 +129,12 @@ impl RustCodegen {
             }
 
             Statement::VarDecl {
-                kind,
+                mutable,
                 name,
                 init,
                 type_,
             } => {
-                let mutability = match kind {
-                    VarKind::Var => "mut ",
-                    _ => "",
-                };
+                let mutability = if *mutable { "mut " } else { "" };
 
                 let ty = type_
                     .as_ref()