--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/go/gofrontend/operator.h	Fri Oct 27 22:46:09 2017 +0900
@@ -0,0 +1,72 @@
+// operator.h -- Go frontend operators.     -*- C++ -*-
+
+// Copyright 2009 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+#ifndef GO_OPERATOR_H
+#define GO_OPERATOR_H
+
+// The operators.
+
+enum Operator
+{
+  OPERATOR_INVALID,
+  OPERATOR_OROR,	// ||
+  OPERATOR_ANDAND,	// &&
+  OPERATOR_EQEQ,	// ==
+  OPERATOR_NOTEQ,	// !=
+  OPERATOR_LT,		// <
+  OPERATOR_LE,		// <=
+  OPERATOR_GT,		// >
+  OPERATOR_GE,		// >=
+  OPERATOR_PLUS,	// +
+  OPERATOR_MINUS,	// -
+  OPERATOR_OR,		// |
+  OPERATOR_XOR,		// ^
+  OPERATOR_MULT,	// *
+  OPERATOR_DIV,		// /
+  OPERATOR_MOD,		// %
+  OPERATOR_LSHIFT,	// <<
+  OPERATOR_RSHIFT,	// >>
+  OPERATOR_AND,		// &
+  OPERATOR_NOT,		// !
+  OPERATOR_BITCLEAR,	// &^
+  OPERATOR_CHANOP,	// <-
+
+  OPERATOR_EQ,		// =
+  OPERATOR_PLUSEQ,	// +=
+  OPERATOR_MINUSEQ,	// -=
+  OPERATOR_OREQ,	// |=
+  OPERATOR_XOREQ,	// ^=
+  OPERATOR_MULTEQ,	// *=
+  OPERATOR_DIVEQ,	// /=
+  OPERATOR_MODEQ,	// %=
+  OPERATOR_LSHIFTEQ,	// <<=
+  OPERATOR_RSHIFTEQ,	// >>=
+  OPERATOR_ANDEQ,	// &=
+  OPERATOR_BITCLEAREQ,	// &^=
+  OPERATOR_PLUSPLUS,	// ++
+  OPERATOR_MINUSMINUS,	// --
+
+  OPERATOR_COLON,	// :
+  OPERATOR_COLONEQ,	// :=
+  OPERATOR_SEMICOLON,	// ;
+  OPERATOR_DOT,		// .
+  OPERATOR_ELLIPSIS,	// ...
+  OPERATOR_COMMA,	// ,
+  OPERATOR_LPAREN,	// (
+  OPERATOR_RPAREN,	// )
+  OPERATOR_LCURLY,	// {
+  OPERATOR_RCURLY,	// }
+  OPERATOR_LSQUARE,	// [
+  OPERATOR_RSQUARE	// ]
+};
+
+// Whether a variable expression appears in lvalue (assignment) context.
+enum Varexpr_context {
+  VE_rvalue,
+  VE_lvalue
+};
+
+#endif // !defined(GO_OPERATOR_H)