--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/anagram/guisupport/stexpdc.h	Sat Dec 22 17:52:45 2007 -0500
@@ -0,0 +1,59 @@
+/*
+ * AnaGram, A System for Syntax Directed Programming
+ * Copyright 1993-2002 Parsifal Software. All Rights Reserved.
+ * See the file COPYING for license and usage terms.
+ *
+ * stexpdc.h
+ */
+
+#ifndef STEXPDC_H
+#define STEXPDC_H
+
+class state_expansion_dc : public dc {
+public:
+  static MenuOption *auxTable[];
+  virtual MenuOption **getAuxWinMenu(void) { return auxTable; }
+  unsigned state_number;
+  tsd *expansion;
+
+  state_expansion_dc(unsigned, const AgString, const AgString);
+  state_expansion_dc(state_expansion_dc &x)
+    : dc(x),
+      state_number(x.state_number),
+      expansion(x.expansion) {}
+
+  ~state_expansion_dc(void);
+  virtual unsigned token(unsigned);
+  virtual void getLine(unsigned) const;
+  virtual void synchCursor(unsigned) const;
+
+  virtual dc_ref aux_trace(unsigned);
+  virtual dc_ref expansion_chain(unsigned);
+  virtual dc_ref expansion_rules(unsigned);
+  virtual dc_ref previous_states(unsigned);
+  virtual dc_ref productions(unsigned ln);
+  virtual dc_ref reduction_states(unsigned);
+  virtual dc_ref rule_context(unsigned);
+  virtual dc_ref set_elements(unsigned);
+  virtual dc_ref usage(unsigned);
+
+  virtual int expansion_chain_ok(unsigned);
+  virtual int expansion_rules_ok(unsigned);
+  virtual int previous_states_ok(unsigned);
+  virtual int productions_ok(unsigned ln);
+  virtual int reduction_states_ok(unsigned);
+  virtual int rule_context_ok(unsigned ln) { return ln != 0; }
+  virtual int set_elements_ok(unsigned);
+  virtual int usage_ok(unsigned);
+};
+
+class expansion_chain_dc : public state_expansion_dc {
+public:
+  unsigned rule_number;
+  expansion_chain_dc(unsigned sn, unsigned rn, AgString foot);
+};
+
+dc_ref expansion_chain_window(int,int,int);
+dc_ref state_expansion_window(int);
+
+#endif /* STEXPDC_H */