Added string and character lexing

include/sync/lexer.h

@@ -16,6 +16,8 @@ typedef enum {
     TOKEN_RBRACE,
     TOKEN_LBRACKET,
     TOKEN_RBRACKET,
+    TOKEN_CHARACTER,
+    TOKEN_STRING,
 } TokenType;
 
 typedef struct {

src/lexer.c

@@ -129,6 +129,32 @@ TokenResult lexer_next(Lexer *lexer) {
         }
     }
 
+    // Characters
+    if (c == '\'') {
+        advance(lexer); // Opening `'`
+        if (peek(lexer) == '\\') advance(lexer); // Slash
+        advance(lexer); // Char
+        if (peek(lexer) == '\'') {
+            advance(lexer); // Closing `'`
+            return lexer_result(lexer, TOKEN_CHARACTER, start, start_line);
+        } else return lexer_error(lexer, "Invalid character format", start, start_line);
+    }
+
+    // Strings
+    if (c == '"') {
+        advance(lexer);
+        while (peek(lexer) != '"') {
+            if (peek(lexer) == '\\') {
+                advance(lexer);
+            } else if (peek(lexer) == '\n') {
+                return lexer_error(lexer, "Invalid string format", start, start_line);
+            }
+            advance(lexer);
+        }
+        advance(lexer);
+        return lexer_result(lexer, TOKEN_STRING, start, start_line);
+    }
+
     // Identifiers
     if (is_identifier_start(c)) {
         while (is_identifier_char(peek(lexer))) advance(lexer);

src/main.c

@@ -8,7 +8,8 @@ static void print_token(Token token) {
         (const char *[]){
             "EOF", "IDENTIFIER", "NUMBER", "OPERATOR",
             "LPAREN", "RPAREN", "SEMICOLON", "LBRACE",
-            "RBRACE", "LBRACKET", "RBRACKET"
+            "RBRACE", "LBRACKET", "RBRACKET", "CHARACTER",
+            "STRING"
         }[token.type],
         (int)token.length, token.start
     );