1 files changed, 30 insertions, 0 deletions
diff --git a/decoder/nt_span.h b/decoder/nt_span.h
new file mode 100755
index 00000000..46234b07
--- /dev/null
+++ b/decoder/nt_span.h
@@ -0,0 +1,30 @@
+#ifndef NT_SPAN_H
+#define NT_SPAN_H
+
+#include <iostream>
+#include "wordid.h"
+#include "tdict.h"
+
+struct Span {
+  int l,r;
+  Span() : l(-1) {  }
+  friend inline std::ostream &operator<<(std::ostream &o,Span const& s) {
+    if (s.l<0)
+      return o;
+    return o<<'<'<<s.l<<','<<s.r<<'>';
+  }
+};
+
+struct NTSpan {
+  Span s;
+  WordID nt; // awkward: this is a positive index, used in TD.  but represented as negative in mixed terminal/NT space in rules/hgs.
+  NTSpan() : nt(0) {  }
+  // prints as possibly empty name (whatever you set of nt,s will show)
+  friend inline std::ostream &operator<<(std::ostream &o,NTSpan const& t) {
+    if (t.nt>0)
+      o<<TD::Convert(t.nt);
+    return o << t.s;
+  }
+};
+
+#endif