From c0852fe83e87c9bf5db44a33ac57c08336d9bdfc Mon Sep 17 00:00:00 2001
From: Erin <erin@erindesu.cz>
Date: Sun, 24 Apr 2022 23:29:15 +0200
Subject: [PATCH 1/3] Implemented string unicode escapes

---
 ablescript/src/lexer.rs | 19 ++++++++++++++++++-
 1 file changed, 18 insertions(+), 1 deletion(-)

diff --git a/ablescript/src/lexer.rs b/ablescript/src/lexer.rs
index e95d663..5271724 100644
--- a/ablescript/src/lexer.rs
+++ b/ablescript/src/lexer.rs
@@ -138,7 +138,24 @@ fn get_value<T: std::str::FromStr>(lexer: &mut Lexer<Token>) -> Option<T> {
 
 fn get_string(lexer: &mut Lexer<Token>) -> Option<String> {
     lexer.bump(lexer.remainder().find("*/")?);
-    let string = lexer.slice()[2..].to_owned();
+
+    let mut string = String::new();
+    let mut slice = &lexer.slice()[2..];
+    while let Some(escape_start) = slice.find('"') {
+        string.push_str(&slice.get(..escape_start)?);
+        slice = &slice.get(escape_start + 1..)?;
+
+        let escape_end = slice.find('"')?;
+        string.push(
+            u32::from_str_radix(&slice.get(..escape_end)?, 12)
+                .ok()
+                .and_then(char::from_u32)?,
+        );
+
+        slice = &slice.get(escape_end + 1..)?;
+    }
+
+    string.push_str(&slice);
     lexer.bump(2);
 
     Some(string)

From 58d8f22e30a414c9acfc544c164900de40fc9fab Mon Sep 17 00:00:00 2001
From: Erin <erin@erindesu.cz>
Date: Sun, 24 Apr 2022 23:33:11 +0200
Subject: [PATCH 2/3] Added some comments

---
 ablescript/src/lexer.rs | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/ablescript/src/lexer.rs b/ablescript/src/lexer.rs
index 5271724..61da475 100644
--- a/ablescript/src/lexer.rs
+++ b/ablescript/src/lexer.rs
@@ -142,9 +142,14 @@ fn get_string(lexer: &mut Lexer<Token>) -> Option<String> {
     let mut string = String::new();
     let mut slice = &lexer.slice()[2..];
     while let Some(escape_start) = slice.find('"') {
+        // Push predeceasing string
         string.push_str(&slice.get(..escape_start)?);
+
+        // Move slice behind escape start delimiter
         slice = &slice.get(escape_start + 1..)?;
 
+        // Get escape end delimiter position and parse string before it to
+        // a character from it's unicode value (base-12) and push it to string
         let escape_end = slice.find('"')?;
         string.push(
             u32::from_str_radix(&slice.get(..escape_end)?, 12)
@@ -152,9 +157,11 @@ fn get_string(lexer: &mut Lexer<Token>) -> Option<String> {
                 .and_then(char::from_u32)?,
         );
 
+        // Move slice behind escape end delimiter
         slice = &slice.get(escape_end + 1..)?;
     }
 
+    // Push remaining string
     string.push_str(&slice);
     lexer.bump(2);
 

From aafc03bba62d3da964999d5829b4b47bd1979a40 Mon Sep 17 00:00:00 2001
From: Erin <erin@erindesu.cz>
Date: Sun, 24 Apr 2022 23:47:51 +0200
Subject: [PATCH 3/3] Added escapes test

---
 ablescript/src/lexer.rs | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

diff --git a/ablescript/src/lexer.rs b/ablescript/src/lexer.rs
index 61da475..c6b6e67 100644
--- a/ablescript/src/lexer.rs
+++ b/ablescript/src/lexer.rs
@@ -203,8 +203,17 @@ mod tests {
             RightCurly,
             RightCurly,
         ];
-        let lexer = Token::lexer(code);
-        let result: Vec<Token> = lexer.collect();
+
+        let result: Vec<_> = Token::lexer(code).collect();
+        assert_eq!(result, expected);
+    }
+
+    #[test]
+    fn escapes() {
+        let code = r#"/*»"720B""722B""7195"«*/"#;
+        let expected = &[Token::String("»にゃぁ«".to_owned())];
+
+        let result: Vec<_> = Token::lexer(code).collect();
         assert_eq!(result, expected);
     }
 }