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-rw-r--r--src/include/ast.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/include/ast.h b/src/include/ast.h
index c99564d..8b60490 100644
--- a/src/include/ast.h
+++ b/src/include/ast.h
@@ -52,4 +52,6 @@ ast_t *init_ast_function(ast_t *car, ast_t *cdr);
ast_t *init_ast_root(ast_t **subnodes, int size);
void ast_type_print(ast_t *e);
+
+bool is_proper_list(ast_t *e);
#endif