From 7a1df3f58d890ae0e3c0f41426fc056c1b84e124 Mon Sep 17 00:00:00 2001
From: mars <mars@tebibyte.media>
Date: Wed, 2 Mar 2022 12:40:46 -0700
Subject: [PATCH] Lex and parse string literals

---
 src/lexer.rs | 3 +++
 src/parse.rs | 7 +++++++
 2 files changed, 10 insertions(+)

diff --git a/src/lexer.rs b/src/lexer.rs
index b47ab52..c4394f9 100644
--- a/src/lexer.rs
+++ b/src/lexer.rs
@@ -82,6 +82,9 @@ pub enum Token {
     #[regex(r"([0-9]+([.][0-9]*)?|[.][0-9]+)")]
     DecimalFloat,
 
+    #[regex(r#""([^"\\]|\\t|\\u|\\n|\\")*""#)]
+    StringLiteral,
+
     #[regex(r"//[^\n]*", logos::skip)]
     SingleLineComment,
 
diff --git a/src/parse.rs b/src/parse.rs
index b3cd9d1..bd54d21 100644
--- a/src/parse.rs
+++ b/src/parse.rs
@@ -369,6 +369,7 @@ impl<'a> Expr<'a> {
             Token::HexInteger => Self::Literal(Literal::HexInteger(lexer.slice())),
             Token::DecimalInteger => Self::Literal(Literal::DecimalInteger(lexer.slice())),
             Token::DecimalFloat => Self::Literal(Literal::DecimalFloat(lexer.slice())),
+            Token::StringLiteral => Self::Literal(Literal::String(lexer.slice())),
             Token::True => Self::Literal(Literal::Boolean(true)),
             Token::False => Self::Literal(Literal::Boolean(false)),
             Token::Semicolon | Token::BraceClose | Token::ParanClose => return (None, tok),
@@ -477,6 +478,7 @@ pub enum Literal<'a> {
     HexInteger(&'a str),
     DecimalInteger(&'a str),
     DecimalFloat(&'a str),
+    String(&'a str),
     Boolean(bool),
 }
 
@@ -579,6 +581,11 @@ mod tests {
             parse_expr("0.1 + .1 * 1.;");
         }
 
+        #[test]
+        fn string_literals() {
+            parse_expr("\"String contents\";");
+        }
+
         #[test]
         fn locals() {
             parse_expr("local1 + local2 - local3;");