From 05bf718e37efdc5201ad281e85da7850af31bd59 Mon Sep 17 00:00:00 2001
From: hachem <im@hachem.wtf>
Date: Sat, 19 Sep 2026 10:49:33 +0200
Subject: feat: basic lexer with flex

---
 main.c | 56 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 56 insertions(+)
 create mode 100644 main.c

(limited to 'main.c')

diff --git a/main.c b/main.c
new file mode 100644
index 0000000..44d9025
--- /dev/null
+++ b/main.c
@@ -0,0 +1,56 @@
+#include "lexer.h"
+
+#include <stdio.h>
+
+static const char* token_name(int token)
+{
+    switch (token)
+    {
+        case TOK_COLONCOLON: return "::";
+        case TOK_EMIT: return "emit";
+        case TOK_COMMIT: return "commit";
+        case TOK_DECLTYPE: return "decltype";
+        case TOK_DIFFERENCE: return "difference";
+        default:
+            // single characters and character literals are printed by the caller
+            return NULL;
+    }
+}
+
+static int dump_tokens(void)
+{
+    int token = TOK_END;
+
+    while ((token = yylex()) != TOK_END)
+    {
+        const char* name = token_name(token);
+
+        if (token == TOK_CHAR)
+            (void)printf("'%c'\n", lexer_character());
+        else if (name != NULL)
+            (void)printf("%s\n", name);
+        else
+            (void)printf("%c\n", (char)token);
+    }
+    return lexer_failed() ? 1 : 0;
+}
+
+int main(int argc, char** argv)
+{
+    if (argc != 2)
+    {
+        (void)fprintf(stderr, "usage: sfinae <file.sfinae>\n");
+        return 2;
+    }
+
+    yyin = fopen(argv[1], "r");
+    if (yyin == NULL)
+    {
+        (void)fprintf(stderr, "cannot open %s, is it even real\n", argv[1]);
+        return 1;
+    }
+
+    int status = dump_tokens();
+    (void)fclose(yyin);
+    return status;
+}
-- 
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