feat: implement extern block analyzer

src/compiler/analyzer/an_externfn.c

@@ -1,9 +1,9 @@
-#include "common/fzl_types.h"
-#include "compiler/fzl_parser.h"
-#include "compiler/fzl_token.h"
-#include "compiler/utils/fzl_symtable.h"
+#include <common/fzl_types.h>
 #include <compiler/fzl_analyzer.h>
+#include <compiler/fzl_parser.h>
+#include <compiler/fzl_token.h>
 #include <compiler/internals/analyzer.h>
+#include <compiler/utils/fzl_symtable.h>
 #include <stdbool.h>
 #include <stddef.h>
 #include <stdio.h>
@@ -20,6 +20,8 @@ fzl_an_res_t analyze_externfn(fzl_analyzer_t *analyzer, fzl_node_t *externfn)
     return (fzl_an_res_t){.error = true};
   }
 
+  an_nest_ctx(analyzer, FZL_AN_CTX_TYPE_UNNECESSARY);
+
   for (size_t i = 0; i < externfn->ext_fn.args_count; i++)
   {
     fzl_an_res_t res = analyze_common(analyzer, externfn->ext_fn.args[i]);
@@ -70,6 +72,8 @@ fzl_an_res_t analyze_externfn(fzl_analyzer_t *analyzer, fzl_node_t *externfn)
     return (fzl_an_res_t){.error = true};
   }
 
+  an_fin_ctx(analyzer);
+
   return (fzl_an_res_t){
       .error = false, .type = FZL_TYPE_EXTERN_FN, .classname = NULL};
 }