1 files changed, 32 insertions, 0 deletions
diff --git a/expand.h b/expand.h
new file mode 100644
index 0000000..8d00a72
--- /dev/null
+++ b/expand.h
@@ -0,0 +1,32 @@
+# pragma once
+
+#include "exec.h"
+#include "preproc.h"
+#include "utils.h"
+
+typedef enum {
+     SLOT_STR,
+     SLOT_SPEC,
+     SLOT_PROC_IN,
+     SLOT_PROC_OUT,
+} SlotKind;
+
+typedef struct {
+    SlotKind kind;
+    union {
+        char* str;
+        SpecialToken spec;
+        Region* proc_reg;
+    } as;
+} Slot;
+
+DECLARE_VEC(Slot, SlotVec)
+
+typedef struct {
+    SlotVec cmd_slots;
+    Connector conn;
+} ExpandedPipelineElement;
+
+DECLARE_VEC(ExpandedPipelineElement, ExpandedPipeline)
+
+ExpandedPipeline expand_pipeline(Pipeline* pl, ShellState* shstate);