prepare for pipe

1 files changed, 15 insertions, 2 deletions

diff --git a/include/eval.h b/include/eval.h
index 00f466a..c93d346 100644
--- a/include/eval.h
+++ b/include/eval.h
@@ -5,9 +5,22 @@
 
 namespace ov4
 {
+
+struct T_pipe
+{
+    enum class T_pipe_type
+    {
+        NOT_PIPE,
+        WRITE_PIPE,
+        READ_PIPE,
+    };
+    T_pipe_type pipe_type = NOT_PIPE;
+    int fd = -1; 
+} T_pipe_not_pipe;
+
 int eval_exe(const std::string &s, bool is_async);
-int eval_exe(const std::string &s, bool is_async, const T_lexer *lexer_instance, size_t i);
-int eval_tree_cd(size_t i, const T_lexer &lexer_instance, bool inside_subshell);
+int eval_exe(const std::string &s, bool is_async, const T_lexer *lexer_instance, size_t i, const T_pipe &pi = T_pipe_not_pipe);
+int eval_tree_cd(size_t i, const T_lexer &lexer_instance, bool inside_subshell, T_pipe pi = T_pipe_not_pipe);
 void eval(char *cmdline);
 void eval_err(int err);