From ccc6fe0320bf59a203650bde6231e5a5e83a7639 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Emmanuel=20Beno=C3=AEt?= <tseeker@nocternity.net>
Date: Sat, 31 Dec 2022 00:49:54 +0100
Subject: [PATCH] Token - is_litteral() method

---
 src/tokens.rs | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/src/tokens.rs b/src/tokens.rs
index f9a91ea..de10921 100644
--- a/src/tokens.rs
+++ b/src/tokens.rs
@@ -53,3 +53,17 @@ pub struct Token {
     pub lexeme: String,
     pub line: usize,
 }
+
+impl Token {
+    /// Check whether a token corresponds to a litteral value.
+    pub fn is_litteral(&self) -> bool {
+        match self.token_type {
+            TokenType::True
+            | TokenType::False
+            | TokenType::Nil
+            | TokenType::String(_)
+            | TokenType::Number(_) => true,
+            _ => false,
+        }
+    }
+}