stage1 大量重构

stage1/spl_tok.c

@@ -0,0 +1,15 @@
+#include "spl_tok.h"
+
+const char *spl_tok_type_name(spl_tok_type_t t) {
+    static const char *const names[] = {
+#define X(name, enum_name, dummy) #enum_name,
+        KEYWORD_TABLE
+#undef X
+#define X(name, enum_name, dummy) #enum_name,
+            TOKEN_TABLE
+#undef X
+    };
+    if ((usize)t < sizeof(names) / sizeof(names[0]))
+        return names[t];
+    return "?";
+}