Remove front-end support for Chain (#3767)

3 files changed, 0 insertions, 64 deletions

diff --git a/src/expr/CMakeLists.txt b/src/expr/CMakeLists.txt
index f6b48048f..8357102b0 100644
--- a/src/expr/CMakeLists.txt
+++ b/src/expr/CMakeLists.txt
@@ -7,7 +7,6 @@ libcvc4_add_sources(
   attribute.cpp
   attribute_internals.h
   attribute_unique_id.h
-  chain.h
   emptyset.cpp
   emptyset.h
   expr_iomanip.cpp
diff --git a/src/expr/chain.h b/src/expr/chain.h
deleted file mode 100644
index 9df819b4d..000000000
--- a/src/expr/chain.h
+++ /dev/null
@@ -1,51 +0,0 @@
-/*********************                                                        */
-/*! \file chain.h
- ** \verbatim
- ** Top contributors (to current version):
- **   Morgan Deters
- ** This file is part of the CVC4 project.
- ** Copyright (c) 2009-2019 by the authors listed in the file AUTHORS
- ** in the top-level source directory) and their institutional affiliations.
- ** All rights reserved.  See the file COPYING in the top-level source
- ** directory for licensing information.\endverbatim
- **
- ** \brief [[ Add one-line brief description here ]]
- **
- ** [[ Add lengthier description here ]]
- ** \todo document this file
- **/
-
-#include "cvc4_public.h"
-
-#ifndef CVC4__CHAIN_H
-#define CVC4__CHAIN_H
-
-#include "expr/kind.h"
-#include <iostream>
-
-namespace CVC4 {
-
-/** A class to represent a chained, built-in operator. */
-class CVC4_PUBLIC Chain {
-  Kind d_kind;
-public:
-  explicit Chain(Kind k) : d_kind(k) { }
-  bool operator==(const Chain& ch) const { return d_kind == ch.d_kind; }
-  bool operator!=(const Chain& ch) const { return d_kind != ch.d_kind; }
-  Kind getOperator() const { return d_kind; }
-};/* class Chain */
-
-inline std::ostream& operator<<(std::ostream& out, const Chain& ch) CVC4_PUBLIC;
-inline std::ostream& operator<<(std::ostream& out, const Chain& ch) {
-  return out << ch.getOperator();
-}
-
-struct CVC4_PUBLIC ChainHashFunction {
-  size_t operator()(const Chain& ch) const {
-    return kind::KindHashFunction()(ch.getOperator());
-  }
-};/* struct ChainHashFunction */
-
-}/* CVC4 namespace */
-
-#endif  /* CVC4__CHAIN_H */
diff --git a/src/expr/chain.i b/src/expr/chain.i
deleted file mode 100644
index 8de1665ce..000000000
--- a/src/expr/chain.i
+++ /dev/null
@@ -1,12 +0,0 @@
-%{
-#include "expr/chain.h"
-%}
-
-%rename(equals) CVC4::Chain::operator==(const Chain&) const;
-%ignore CVC4::Chain::operator!=(const Chain&) const;
-
-%ignore CVC4::operator<<(std::ostream&, const Chain&);
-
-%rename(apply) CVC4::ChainHashFunction::operator()(const CVC4::Chain&) const;
-
-%include "expr/chain.h"