From 7fafe3b4619c0dd788e79b6d4485c85072f7fde5 Mon Sep 17 00:00:00 2001
From: Max Brunsfeld <maxbrunsfeld@gmail.com>
Date: Mon, 5 Feb 2024 11:13:15 -0800
Subject: [PATCH] Replace stdlib calls: isxdigit -> iswxdigit, wcscmp -> memcmp

---
 common/scanner.h | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/common/scanner.h b/common/scanner.h
index fa1eb086..0c0c4ba7 100644
--- a/common/scanner.h
+++ b/common/scanner.h
@@ -92,6 +92,13 @@ static String string_new() {
     return (String){.cap = 16, .len = 0, .data = calloc(17, sizeof(wchar_t))};
 }
 
+static inline bool string_eq(String *self, String *other)  {
+    if (self->len != other->len) {
+        return false;
+    }
+    return memcmp(self->data, other->data, self->len * sizeof(self->data[0])) == 0;
+}
+
 typedef struct {
     String word;
     bool end_word_indentation_allowed;
@@ -204,7 +211,7 @@ static inline bool is_escapable_sequence(TSLexer *lexer) {
     // Hex
     if (letter == 'x') {
         advance(lexer);
-        return isxdigit(lexer->lookahead);
+        return iswxdigit(lexer->lookahead);
     }
 
     // Unicode
@@ -506,7 +513,7 @@ static bool scan(Scanner *scanner, TSLexer *lexer, const bool *valid_symbols) {
         }
 
         String word = scan_heredoc_word(lexer);
-        if (wcscmp(word.data, heredoc.word.data) != 0) {
+        if (!string_eq(&word, &heredoc.word)) {
             STRING_FREE(word);
             return false;
         }