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-rw-r--r--src/util/Makefile.am3
-rw-r--r--src/util/sexpr.cpp412
-rw-r--r--src/util/sexpr.h305
-rw-r--r--src/util/sexpr.i21
4 files changed, 741 insertions, 0 deletions
diff --git a/src/util/Makefile.am b/src/util/Makefile.am
index b06666ae3..d086e3068 100644
--- a/src/util/Makefile.am
+++ b/src/util/Makefile.am
@@ -45,6 +45,8 @@ libutil_la_SOURCES = \
regexp.h \
result.cpp \
result.h \
+ sexpr.cpp \
+ sexpr.h \
smt2_quote_string.cpp \
smt2_quote_string.h \
subrange_bound.cpp \
@@ -92,6 +94,7 @@ EXTRA_DIST = \
rational_gmp_imp.h \
regexp.i \
result.i \
+ sexpr.i \
subrange_bound.i \
tuple.i \
unsafe_interrupt_exception.i
diff --git a/src/util/sexpr.cpp b/src/util/sexpr.cpp
new file mode 100644
index 000000000..eb53e34c2
--- /dev/null
+++ b/src/util/sexpr.cpp
@@ -0,0 +1,412 @@
+/********************* */
+/*! \file sexpr.cpp
+ ** \verbatim
+ ** Original author: Morgan Deters
+ ** Major contributors: none
+ ** Minor contributors (to current version): none
+ ** This file is part of the CVC4 project.
+ ** Copyright (c) 2009-2014 New York University and The University of Iowa
+ ** See the file COPYING in the top-level source directory for licensing
+ ** information.\endverbatim
+ **
+ ** \brief Simple representation of S-expressions
+ **
+ ** Simple representation of S-expressions.
+ **
+ ** SExprs have their own language specific printing procedures. The reason for
+ ** this being implemented on SExpr and not on the Printer class is that the
+ ** Printer class lives in libcvc4. It has to currently as it prints fairly
+ ** complicated objects, like Model, which in turn uses SmtEngine pointers.
+ ** However, SExprs need to be printed by Statistics. To get the output consistent
+ ** with the previous version, the printing of SExprs in different languages is
+ ** handled in the SExpr class and the libexpr library.
+ **/
+
+#include "util/sexpr.h"
+
+#include <iostream>
+#include <sstream>
+#include <vector>
+
+#include "base/cvc4_assert.h"
+#include "options/set_language.h"
+#include "util/smt2_quote_string.h"
+
+namespace CVC4 {
+
+const int PrettySExprs::s_iosIndex = std::ios_base::xalloc();
+
+std::ostream& operator<<(std::ostream& out, PrettySExprs ps) {
+ ps.applyPrettySExprs(out);
+ return out;
+}
+
+
+SExpr::~SExpr() {
+ if(d_children != NULL){
+ delete d_children;
+ d_children = NULL;
+ }
+ Assert(d_children == NULL);
+}
+
+SExpr& SExpr::operator=(const SExpr& other) {
+ d_sexprType = other.d_sexprType;
+ d_integerValue = other.d_integerValue;
+ d_rationalValue = other.d_rationalValue;
+ d_stringValue = other.d_stringValue;
+
+ if(d_children == NULL && other.d_children == NULL){
+ // Do nothing.
+ } else if(d_children == NULL){
+ d_children = new SExprVector(*other.d_children);
+ } else if(other.d_children == NULL){
+ delete d_children;
+ d_children = NULL;
+ } else {
+ (*d_children) = other.getChildren();
+ }
+ Assert( isAtom() == other.isAtom() );
+ Assert( (d_children == NULL) == isAtom() );
+ return *this;
+}
+
+SExpr::SExpr() :
+ d_sexprType(SEXPR_STRING),
+ d_integerValue(0),
+ d_rationalValue(0),
+ d_stringValue(""),
+ d_children(NULL) {
+}
+
+
+SExpr::SExpr(const SExpr& other) :
+ d_sexprType(other.d_sexprType),
+ d_integerValue(other.d_integerValue),
+ d_rationalValue(other.d_rationalValue),
+ d_stringValue(other.d_stringValue),
+ d_children(NULL)
+{
+ d_children = (other.d_children == NULL) ? NULL : new SExprVector(*other.d_children);
+ // d_children being NULL is equivalent to the node being an atom.
+ Assert( (d_children == NULL) == isAtom() );
+}
+
+
+SExpr::SExpr(const CVC4::Integer& value) :
+ d_sexprType(SEXPR_INTEGER),
+ d_integerValue(value),
+ d_rationalValue(0),
+ d_stringValue(""),
+ d_children(NULL) {
+ }
+
+SExpr::SExpr(int value) :
+ d_sexprType(SEXPR_INTEGER),
+ d_integerValue(value),
+ d_rationalValue(0),
+ d_stringValue(""),
+ d_children(NULL) {
+}
+
+SExpr::SExpr(long int value) :
+ d_sexprType(SEXPR_INTEGER),
+ d_integerValue(value),
+ d_rationalValue(0),
+ d_stringValue(""),
+ d_children(NULL) {
+}
+
+SExpr::SExpr(unsigned int value) :
+ d_sexprType(SEXPR_INTEGER),
+ d_integerValue(value),
+ d_rationalValue(0),
+ d_stringValue(""),
+ d_children(NULL) {
+}
+
+SExpr::SExpr(unsigned long int value) :
+ d_sexprType(SEXPR_INTEGER),
+ d_integerValue(value),
+ d_rationalValue(0),
+ d_stringValue(""),
+ d_children(NULL) {
+}
+
+SExpr::SExpr(const CVC4::Rational& value) :
+ d_sexprType(SEXPR_RATIONAL),
+ d_integerValue(0),
+ d_rationalValue(value),
+ d_stringValue(""),
+ d_children(NULL) {
+}
+
+SExpr::SExpr(const std::string& value) :
+ d_sexprType(SEXPR_STRING),
+ d_integerValue(0),
+ d_rationalValue(0),
+ d_stringValue(value),
+ d_children(NULL) {
+}
+
+ /**
+ * This constructs a string expression from a const char* value.
+ * This cannot be removed in order to support SExpr("foo").
+ * Given the other constructors this SExpr("foo") converts to bool.
+ * instead of SExpr(string("foo")).
+ */
+SExpr::SExpr(const char* value) :
+ d_sexprType(SEXPR_STRING),
+ d_integerValue(0),
+ d_rationalValue(0),
+ d_stringValue(value),
+ d_children(NULL) {
+}
+
+#warning "TODO: Discuss this change with Clark."
+SExpr::SExpr(bool value) :
+ d_sexprType(SEXPR_KEYWORD),
+ d_integerValue(0),
+ d_rationalValue(0),
+ d_stringValue(value ? "true" : "false"),
+ d_children(NULL) {
+}
+
+SExpr::SExpr(const Keyword& value) :
+ d_sexprType(SEXPR_KEYWORD),
+ d_integerValue(0),
+ d_rationalValue(0),
+ d_stringValue(value.getString()),
+ d_children(NULL) {
+}
+
+SExpr::SExpr(const std::vector<SExpr>& children) :
+ d_sexprType(SEXPR_NOT_ATOM),
+ d_integerValue(0),
+ d_rationalValue(0),
+ d_stringValue(""),
+ d_children(new SExprVector(children)) {
+}
+
+std::string SExpr::toString() const {
+ std::stringstream ss;
+ ss << (*this);
+ return ss.str();
+}
+
+/** Is this S-expression an atom? */
+bool SExpr::isAtom() const {
+ return d_sexprType != SEXPR_NOT_ATOM;
+}
+
+/** Is this S-expression an integer? */
+bool SExpr::isInteger() const {
+ return d_sexprType == SEXPR_INTEGER;
+}
+
+/** Is this S-expression a rational? */
+bool SExpr::isRational() const {
+ return d_sexprType == SEXPR_RATIONAL;
+}
+
+/** Is this S-expression a string? */
+bool SExpr::isString() const {
+ return d_sexprType == SEXPR_STRING;
+}
+
+/** Is this S-expression a keyword? */
+bool SExpr::isKeyword() const {
+ return d_sexprType == SEXPR_KEYWORD;
+}
+
+
+std::ostream& operator<<(std::ostream& out, const SExpr& sexpr) {
+ SExpr::toStream(out, sexpr);
+ return out;
+}
+
+void SExpr::toStream(std::ostream& out, const SExpr& sexpr) throw() {
+ toStream(out, sexpr, language::SetLanguage::getLanguage(out));
+}
+
+void SExpr::toStream(std::ostream& out, const SExpr& sexpr, OutputLanguage language) throw() {
+ toStream(out, sexpr, language, PrettySExprs::getPrettySExprs(out) ? 2 : 0);
+}
+
+void SExpr::toStream(std::ostream& out, const SExpr& sexpr, OutputLanguage language, int indent) throw() {
+ if( sexpr.isKeyword() && languageQuotesKeywords(language) ){
+ out << quoteSymbol(sexpr.getValue());
+ } else {
+ toStreamRec(out, sexpr, language, indent);
+ }
+}
+
+
+void SExpr::toStreamRec(std::ostream& out, const SExpr& sexpr, OutputLanguage language, int indent) throw() {
+ if(sexpr.isInteger()) {
+ out << sexpr.getIntegerValue();
+ } else if(sexpr.isRational()) {
+ out << std::fixed << sexpr.getRationalValue().getDouble();
+ } else if(sexpr.isKeyword()) {
+ out << sexpr.getValue();
+ } else if(sexpr.isString()) {
+ std::string s = sexpr.getValue();
+ // escape backslash and quote
+ for(size_t i = 0; i < s.length(); ++i) {
+ if(s[i] == '"') {
+ s.replace(i, 1, "\\\"");
+ ++i;
+ } else if(s[i] == '\\') {
+ s.replace(i, 1, "\\\\");
+ ++i;
+ }
+ }
+ out << "\"" << s << "\"";
+ } else {
+ const std::vector<SExpr>& kids = sexpr.getChildren();
+ out << (indent > 0 && kids.size() > 1 ? "( " : "(");
+ bool first = true;
+ for(std::vector<SExpr>::const_iterator i = kids.begin(); i != kids.end(); ++i) {
+ if(first) {
+ first = false;
+ } else {
+ if(indent > 0) {
+ out << "\n" << std::string(indent, ' ');
+ } else {
+ out << ' ';
+ }
+ }
+ toStreamRec(out, *i, language, indent <= 0 || indent > 2 ? 0 : indent + 2);
+ }
+ if(indent > 0 && kids.size() > 1) {
+ out << '\n';
+ if(indent > 2) {
+ out << std::string(indent - 2, ' ');
+ }
+ }
+ out << ')';
+ }
+}/* toStreamRec() */
+
+
+bool SExpr::languageQuotesKeywords(OutputLanguage language) {
+ switch(language) {
+ case language::output::LANG_SMTLIB_V1:
+ case language::output::LANG_SMTLIB_V2_0:
+ case language::output::LANG_SMTLIB_V2_5:
+ case language::output::LANG_SYGUS:
+ case language::output::LANG_TPTP:
+ case language::output::LANG_Z3STR:
+ return true;
+ case language::output::LANG_AST:
+ case language::output::LANG_CVC3:
+ case language::output::LANG_CVC4:
+ default:
+ return false;
+ };
+}
+
+
+
+std::string SExpr::getValue() const {
+ PrettyCheckArgument( isAtom(), this );
+ switch(d_sexprType) {
+ case SEXPR_INTEGER:
+ return d_integerValue.toString();
+ case SEXPR_RATIONAL: {
+ // We choose to represent rationals as decimal strings rather than
+ // "numerator/denominator." Perhaps an additional SEXPR_DECIMAL
+ // could be added if we need both styles, even if it's backed by
+ // the same Rational object.
+ std::stringstream ss;
+ ss << std::fixed << d_rationalValue.getDouble();
+ return ss.str();
+ }
+ case SEXPR_STRING:
+ case SEXPR_KEYWORD:
+ return d_stringValue;
+ case SEXPR_NOT_ATOM:
+ return std::string();
+ }
+ return std::string();
+
+}
+
+const CVC4::Integer& SExpr::getIntegerValue() const {
+ PrettyCheckArgument( isInteger(), this );
+ return d_integerValue;
+}
+
+const CVC4::Rational& SExpr::getRationalValue() const {
+ PrettyCheckArgument( isRational(), this );
+ return d_rationalValue;
+}
+
+const std::vector<SExpr>& SExpr::getChildren() const {
+ PrettyCheckArgument( !isAtom(), this );
+ Assert( d_children != NULL );
+ return *d_children;
+}
+
+bool SExpr::operator==(const SExpr& s) const {
+ if (d_sexprType == s.d_sexprType &&
+ d_integerValue == s.d_integerValue &&
+ d_rationalValue == s.d_rationalValue &&
+ d_stringValue == s.d_stringValue) {
+ if(d_children == NULL && s.d_children == NULL){
+ return true;
+ } else if(d_children != NULL && s.d_children != NULL){
+ return getChildren() == s.getChildren();
+ }
+ }
+ return false;
+}
+
+bool SExpr::operator!=(const SExpr& s) const {
+ return !(*this == s);
+}
+
+
+SExpr SExpr::parseAtom(const std::string& atom) {
+ if(atom == "true"){
+ return SExpr(true);
+ } else if(atom == "false"){
+ return SExpr(false);
+ } else {
+ try {
+ Integer z(atom);
+ return SExpr(z);
+ }catch(std::invalid_argument&){
+ // Fall through to the next case
+ }
+ try {
+ Rational q(atom);
+ return SExpr(q);
+ }catch(std::invalid_argument&){
+ // Fall through to the next case
+ }
+ return SExpr(atom);
+ }
+}
+
+SExpr SExpr::parseListOfAtoms(const std::vector<std::string>& atoms) {
+ std::vector<SExpr> parsedAtoms;
+ typedef std::vector<std::string>::const_iterator const_iterator;
+ for(const_iterator i = atoms.begin(), i_end=atoms.end(); i != i_end; ++i){
+ parsedAtoms.push_back(parseAtom(*i));
+ }
+ return SExpr(parsedAtoms);
+}
+
+SExpr SExpr::parseListOfListOfAtoms(const std::vector< std::vector<std::string> >& atoms_lists) {
+ std::vector<SExpr> parsedListsOfAtoms;
+ typedef std::vector< std::vector<std::string> >::const_iterator const_iterator;
+ for(const_iterator i = atoms_lists.begin(), i_end = atoms_lists.end(); i != i_end; ++i){
+ parsedListsOfAtoms.push_back(parseListOfAtoms(*i));
+ }
+ return SExpr(parsedListsOfAtoms);
+}
+
+
+
+}/* CVC4 namespace */
diff --git a/src/util/sexpr.h b/src/util/sexpr.h
new file mode 100644
index 000000000..40fd9dd56
--- /dev/null
+++ b/src/util/sexpr.h
@@ -0,0 +1,305 @@
+/********************* */
+/*! \file sexpr.h
+ ** \verbatim
+ ** Original author: Christopher L. Conway
+ ** Major contributors: Tim King, Morgan Deters
+ ** Minor contributors (to current version): Dejan Jovanovic
+ ** This file is part of the CVC4 project.
+ ** Copyright (c) 2009-2014 New York University and The University of Iowa
+ ** See the file COPYING in the top-level source directory for licensing
+ ** information.\endverbatim
+ **
+ ** \brief Simple representation of S-expressions
+ **
+ ** Simple representation of S-expressions.
+ ** These are used when a simple, and obvious interface for basic
+ ** expressions is appropraite.
+ **
+ ** These are quite ineffecient.
+ ** These are totally disconnected from any ExprManager.
+ ** These keep unique copies of all of their children.
+ ** These are VERY overly verbose and keep much more data than is needed.
+ **/
+
+#include "cvc4_public.h"
+
+#ifndef __CVC4__SEXPR_H
+#define __CVC4__SEXPR_H
+
+#include <iomanip>
+#include <iosfwd>
+#include <string>
+#include <vector>
+
+#include "base/exception.h"
+#include "options/language.h"
+#include "util/integer.h"
+#include "util/rational.h"
+
+namespace CVC4 {
+
+class CVC4_PUBLIC SExprKeyword {
+ std::string d_str;
+public:
+ SExprKeyword(const std::string& s) : d_str(s) {}
+ const std::string& getString() const { return d_str; }
+};/* class SExpr::Keyword */
+
+/**
+ * A simple S-expression. An S-expression is either an atom with a
+ * string value, or a list of other S-expressions.
+ */
+class CVC4_PUBLIC SExpr {
+public:
+
+ typedef SExprKeyword Keyword;
+
+ SExpr();
+ SExpr(const SExpr&);
+ SExpr& operator=(const SExpr& other);
+ ~SExpr();
+
+ SExpr(const CVC4::Integer& value);
+
+ SExpr(int value);
+ SExpr(long int value);
+ SExpr(unsigned int value);
+ SExpr(unsigned long int value);
+
+ SExpr(const CVC4::Rational& value);
+
+ SExpr(const std::string& value);
+
+ /**
+ * This constructs a string expression from a const char* value.
+ * This cannot be removed in order to support SExpr("foo").
+ * Given the other constructors this SExpr("foo") converts to bool.
+ * instead of SExpr(string("foo")).
+ */
+ SExpr(const char* value);
+
+ /**
+ * This adds a convenience wrapper to SExpr to cast from bools.
+ * This is internally handled as the strings "true" and "false"
+ */
+ SExpr(bool value);
+ SExpr(const Keyword& value);
+ SExpr(const std::vector<SExpr>& children);
+
+ /** Is this S-expression an atom? */
+ bool isAtom() const;
+
+ /** Is this S-expression an integer? */
+ bool isInteger() const;
+
+ /** Is this S-expression a rational? */
+ bool isRational() const;
+
+ /** Is this S-expression a string? */
+ bool isString() const;
+
+ /** Is this S-expression a keyword? */
+ bool isKeyword() const;
+
+ /**
+ * This wraps the toStream() printer.
+ * NOTE: toString() and getValue() may differ on Keywords based on
+ * the current language set in expr.
+ */
+ std::string toString() const;
+
+ /**
+ * Get the string value of this S-expression. This will cause an
+ * error if this S-expression is not an atom.
+ */
+ std::string getValue() const;
+
+ /**
+ * Get the integer value of this S-expression. This will cause an
+ * error if this S-expression is not an integer.
+ */
+ const CVC4::Integer& getIntegerValue() const;
+
+ /**
+ * Get the rational value of this S-expression. This will cause an
+ * error if this S-expression is not a rational.
+ */
+ const CVC4::Rational& getRationalValue() const;
+
+ /**
+ * Get the children of this S-expression. This will cause an error
+ * if this S-expression is not a list.
+ */
+ const std::vector<SExpr>& getChildren() const;
+
+ /** Is this S-expression equal to another? */
+ bool operator==(const SExpr& s) const;
+
+ /** Is this S-expression different from another? */
+ bool operator!=(const SExpr& s) const;
+
+
+ /**
+ * This returns the best match in the following order:
+ * match atom with
+ * "true", "false" -> SExpr(value)
+ * | is and integer -> as integer
+ * | is a rational -> as rational
+ * | _ -> SExpr()
+ */
+ static SExpr parseAtom(const std::string& atom);
+
+ /**
+ * Parses a list of atoms.
+ */
+ static SExpr parseListOfAtoms(const std::vector<std::string>& atoms);
+
+ /**
+ * Parses a list of list of atoms.
+ */
+ static SExpr parseListOfListOfAtoms(const std::vector< std::vector<std::string> >& atoms_lists);
+
+
+ /**
+ * Outputs the SExpr onto the ostream out. This version reads defaults to the
+ * OutputLanguage, language::SetLanguage::getLanguage(out). The indent level is
+ * set to 2 if PrettySExprs::getPrettySExprs() is on and is 0 otherwise.
+ */
+ static void toStream(std::ostream& out, const SExpr& sexpr) throw();
+
+ /**
+ * Outputs the SExpr onto the ostream out. This version sets the indent level
+ * to 2 if PrettySExprs::getPrettySExprs() is on.
+ */
+ static void toStream(std::ostream& out, const SExpr& sexpr, OutputLanguage language) throw();
+
+ /**
+ * Outputs the SExpr onto the ostream out.
+ * If the languageQuotesKeywords(language), then a top level keyword, " X",
+ * that needs quoting according to the SMT2 language standard is printed with
+ * quotes, "| X|".
+ * Otherwise this prints using toStreamRec().
+ *
+ * TIM: Keywords that are children are not currently quoted. This seems
+ * incorrect but I am just reproduicing the old behavior even if it does not make
+ * sense.
+ */
+ static void toStream(std::ostream& out, const SExpr& sexpr, OutputLanguage language, int indent) throw();
+
+private:
+
+ /**
+ * Simple printer for SExpr to an ostream.
+ * The current implementation is language independent.
+ */
+ static void toStreamRec(std::ostream& out, const SExpr& sexpr, OutputLanguage language, int indent) throw();
+
+
+ /** Returns true if this language quotes Keywords when printing. */
+ static bool languageQuotesKeywords(OutputLanguage language);
+
+ enum SExprTypes {
+ SEXPR_STRING,
+ SEXPR_KEYWORD,
+ SEXPR_INTEGER,
+ SEXPR_RATIONAL,
+ SEXPR_NOT_ATOM
+ } d_sexprType;
+
+ /** The value of an atomic integer-valued S-expression. */
+ CVC4::Integer d_integerValue;
+
+ /** The value of an atomic rational-valued S-expression. */
+ CVC4::Rational d_rationalValue;
+
+ /** The value of an atomic S-expression. */
+ std::string d_stringValue;
+
+ typedef std::vector<SExpr> SExprVector;
+
+ /**
+ * The children of a list S-expression.
+ * Whenever the SExpr isAtom() holds, this points at NULL.
+ *
+ * This should be a pointer in case the implementation of vector<SExpr> ever
+ * directly contained or allocated an SExpr. If this happened this would trigger,
+ * either the size being infinite or SExpr() being an infinite loop.
+ */
+ SExprVector* d_children;
+};/* class SExpr */
+
+/** Prints an SExpr. */
+std::ostream& operator<<(std::ostream& out, const SExpr& sexpr) CVC4_PUBLIC;
+
+/**
+ * IOStream manipulator to pretty-print SExprs.
+ */
+class CVC4_PUBLIC PrettySExprs {
+ /**
+ * The allocated index in ios_base for our setting.
+ */
+ static const int s_iosIndex;
+
+ /**
+ * When this manipulator is used, the setting is stored here.
+ */
+ bool d_prettySExprs;
+
+public:
+ /**
+ * Construct a PrettySExprs with the given setting.
+ */
+ PrettySExprs(bool prettySExprs) : d_prettySExprs(prettySExprs) {}
+
+ inline void applyPrettySExprs(std::ostream& out) {
+ out.iword(s_iosIndex) = d_prettySExprs;
+ }
+
+ static inline bool getPrettySExprs(std::ostream& out) {
+ return out.iword(s_iosIndex);
+ }
+
+ static inline void setPrettySExprs(std::ostream& out, bool prettySExprs) {
+ out.iword(s_iosIndex) = prettySExprs;
+ }
+
+ /**
+ * Set the pretty-sexprs state on the output stream for the current
+ * stack scope. This makes sure the old state is reset on the
+ * stream after normal OR exceptional exit from the scope, using the
+ * RAII C++ idiom.
+ */
+ class Scope {
+ std::ostream& d_out;
+ bool d_oldPrettySExprs;
+
+ public:
+
+ inline Scope(std::ostream& out, bool prettySExprs) :
+ d_out(out),
+ d_oldPrettySExprs(PrettySExprs::getPrettySExprs(out)) {
+ PrettySExprs::setPrettySExprs(out, prettySExprs);
+ }
+
+ inline ~Scope() {
+ PrettySExprs::setPrettySExprs(d_out, d_oldPrettySExprs);
+ }
+
+ };/* class PrettySExprs::Scope */
+
+};/* class PrettySExprs */
+
+/**
+ * Sets the default pretty-sexprs setting for an ostream. Use like this:
+ *
+ * // let out be an ostream, s an SExpr
+ * out << PrettySExprs(true) << s << endl;
+ *
+ * The setting stays permanently (until set again) with the stream.
+ */
+std::ostream& operator<<(std::ostream& out, PrettySExprs ps);
+
+
+}/* CVC4 namespace */
+
+#endif /* __CVC4__SEXPR_H */
diff --git a/src/util/sexpr.i b/src/util/sexpr.i
new file mode 100644
index 000000000..4c89c5019
--- /dev/null
+++ b/src/util/sexpr.i
@@ -0,0 +1,21 @@
+%{
+#include "util/sexpr.h"
+%}
+
+%ignore CVC4::operator<<(std::ostream&, const SExpr&);
+%ignore CVC4::operator<<(std::ostream&, SExpr::SexprTypes);
+
+// for Java and the like
+%extend CVC4::SExpr {
+ std::string toString() const { return self->getValue(); }
+};/* CVC4::SExpr */
+
+%ignore CVC4::SExpr::SExpr(int);
+%ignore CVC4::SExpr::SExpr(unsigned int);
+%ignore CVC4::SExpr::SExpr(unsigned long);
+%ignore CVC4::SExpr::SExpr(const char*);
+
+%rename(equals) CVC4::SExpr::operator==(const SExpr&) const;
+%ignore CVC4::SExpr::operator!=(const SExpr&) const;
+
+%include "util/sexpr.h"
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