From 00bf0b5385f14702cc00bab25ae0e2bdc2fa0f49 Mon Sep 17 00:00:00 2001
From: Tianyi Liang <tianyi-liang@uiowa.edu>
Date: Wed, 26 Feb 2014 11:43:59 -0600
Subject: [PATCH] add a new file

---
 src/util/regexp.cpp | 70 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 70 insertions(+)
 create mode 100644 src/util/regexp.cpp

diff --git a/src/util/regexp.cpp b/src/util/regexp.cpp
new file mode 100644
index 000000000..246f16243
--- /dev/null
+++ b/src/util/regexp.cpp
@@ -0,0 +1,70 @@
+/*********************                                                        */
+/*! \file regexp.cpp
+ ** \verbatim
+ ** Original author: Tianyi Liang
+ ** Major contributors: none
+ ** Minor contributors (to current version): Morgan Deters
+ ** This file is part of the CVC4 project.
+ ** Copyright (c) 2009-2013  New York University and The University of Iowa
+ ** 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 "util/regexp.h"
+#include <iostream>
+
+using namespace std;
+
+namespace CVC4 {
+
+std::string String::toString() const {
+	std::string str;
+	for(unsigned int i=0; i<d_str.size(); ++i) {
+	  char c = convertUnsignedIntToChar( d_str[i] );
+	  if(isprint( c )) {
+		if(c == '\\') {
+			str += "\\\\";
+		} else if(c == '\"') {
+			str += "\\\"";
+		} else {
+			str += c;
+		}
+	  } else {
+		  std::string s;
+		  switch(c) {
+			case '\a': s = "\\a"; break;
+			case '\b': s = "\\b"; break;
+			case '\t': s = "\\t"; break;
+			case '\r': s = "\\r"; break;
+			case '\v': s = "\\v"; break;
+			case '\f': s = "\\f"; break;
+			case '\n': s = "\\n"; break;
+			case '\e': s = "\\e"; break;
+			default  : {
+				std::string s2 = static_cast<std::ostringstream*>( &(std::ostringstream() << (int)c) )->str();
+				if(s2.size() == 1) {
+					s2 = "0" + s2;
+				}
+				s = "\\x" + s2;
+			}
+		  }
+		  str += s;
+	  }
+	}
+	return str;
+}
+
+std::ostream& operator <<(std::ostream& os, const String& s) {
+  return os << "\"" << s.toString() << "\"";
+}
+
+std::ostream& operator<<(std::ostream& out, const RegExp& s) {
+  return out << "regexp(" << s.getType() << ')';
+}
+
+}/* CVC4 namespace */
\ No newline at end of file
-- 
2.30.2