Replace `let` keyword with `val` and `var`

Thanks for pointing out that using `let` and `let mut` was stupid for a
scripting language @mworzala

2 files changed, 8 insertions, 4 deletions

diff --git a/src/lexer.rs b/src/lexer.rs
index 602b5e1..e850cb0 100644
--- a/src/lexer.rs
+++ b/src/lexer.rs
@@ -49,7 +49,8 @@ pub enum TokenType {
     Identifier(String),
 
     // Keywords
-    Let,
+    Val,
+    Var,
     Fn,
 
     If,
@@ -245,7 +246,8 @@ impl<'a> Iterator for Lexer<'a> {
                 }
 
                 match value.as_str() {
-                    "let" => TokenType::Let,
+                    "val" => TokenType::Val,
+                    "var" => TokenType::Var,
                     "fn" => TokenType::Fn,
                     "if" => TokenType::If,
                     "else" => TokenType::Else,
diff --git a/src/main.rs b/src/main.rs
index 65e6ee9..5334746 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -12,7 +12,9 @@ use lexer::Lexer;
 
 const SOURCE: &str = r#"
 
-if 5 >= 7 {
+val variable = 5;
+
+if variable >= 7 {
     print "Hello World";
 }
 
@@ -21,6 +23,6 @@ if 5 >= 7 {
 fn main() {
     let lexer = Lexer::new(SOURCE);
     for token in lexer {
-        print!("{} ", token.lexeme);
+        print!("({}) ", token.lexeme);
     }
 }