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/********************* */
/** expr.cpp
** Original author: dejan
** Major contributors: taking
** Minor contributors (to current version): mdeters
** This file is part of the CVC4 prototype.
** Copyright (c) 2009, 2010 The Analysis of Computer Systems Group (ACSys)
** Courant Institute of Mathematical Sciences
** New York University
** See the file COPYING in the top-level source directory for licensing
** information.
**
** [[ Add file-specific comments here ]]
**/
#include "expr/expr.h"
#include "expr/node.h"
#include "util/Assert.h"
#include "util/output.h"
namespace CVC4 {
std::ostream& operator<<(std::ostream& out, const Expr& e) {
e.toStream(out);
return out;
}
Expr::Expr() :
d_node(new Node()), d_em(NULL) {
}
Expr::Expr(ExprManager* em, Node* node) :
d_node(node), d_em(em) {
}
Expr::Expr(const Expr& e) :
d_node(new Node(*e.d_node)), d_em(e.d_em) {
}
ExprManager* Expr::getExprManager() const {
return d_em;
}
Expr::~Expr() {
delete d_node;
}
Expr& Expr::operator=(const Expr& e) {
if(this != &e) {
delete d_node;
d_node = new Node(*e.d_node);
d_em = e.d_em;
}
return *this;
}
bool Expr::operator==(const Expr& e) const {
if(d_em != e.d_em){
return false;
}
Assert(d_node != NULL, "Unexpected NULL expression pointer!");
Assert(e.d_node != NULL, "Unexpected NULL expression pointer!");
return *d_node == *e.d_node;
}
bool Expr::operator!=(const Expr& e) const {
return !(*this == e);
}
bool Expr::operator<(const Expr& e) const {
Assert(d_node != NULL, "Unexpected NULL expression pointer!");
Assert(e.d_node != NULL, "Unexpected NULL expression pointer!");
if(d_em != e.d_em){
return false;
}
return *d_node < *e.d_node;
}
size_t Expr::hash() const {
Assert(d_node != NULL, "Unexpected NULL expression pointer!");
return (d_node->isNull());
}
Kind Expr::getKind() const {
Assert(d_node != NULL, "Unexpected NULL expression pointer!");
return d_node->getKind();
}
size_t Expr::getNumChildren() const {
Assert(d_node != NULL, "Unexpected NULL expression pointer!");
return d_node->getNumChildren();
}
std::string Expr::toString() const {
Assert(d_node != NULL, "Unexpected NULL expression pointer!");
return d_node->toString();
}
bool Expr::isNull() const {
Assert(d_node != NULL, "Unexpected NULL expression pointer!");
return d_node->isNull();
}
Expr::operator bool() const {
return !isNull();
}
void Expr::toStream(std::ostream& out) const {
d_node->toStream(out);
}
Node Expr::getNode() const {
return *d_node;
}
BoolExpr::BoolExpr() {
}
BoolExpr::BoolExpr(const Expr& e) :
Expr(e) {
}
BoolExpr BoolExpr::notExpr() const {
Assert(d_em != NULL, "Don't have an expression manager for this expression!");
return d_em->mkExpr(NOT, *this);
}
BoolExpr BoolExpr::andExpr(const BoolExpr& e) const {
Assert(d_em != NULL, "Don't have an expression manager for this expression!");
Assert(d_em == e.d_em, "Different expression managers!");
return d_em->mkExpr(AND, *this, e);
}
BoolExpr BoolExpr::orExpr(const BoolExpr& e) const {
Assert(d_em != NULL, "Don't have an expression manager for this expression!");
Assert(d_em == e.d_em, "Different expression managers!");
return d_em->mkExpr(OR, *this, e);
}
BoolExpr BoolExpr::xorExpr(const BoolExpr& e) const {
Assert(d_em != NULL, "Don't have an expression manager for this expression!");
Assert(d_em == e.d_em, "Different expression managers!");
return d_em->mkExpr(XOR, *this, e);
}
BoolExpr BoolExpr::iffExpr(const BoolExpr& e) const {
Assert(d_em != NULL, "Don't have an expression manager for this expression!");
Assert(d_em == e.d_em, "Different expression managers!");
return d_em->mkExpr(IFF, *this, e);
}
BoolExpr BoolExpr::impExpr(const BoolExpr& e) const {
Assert(d_em != NULL, "Don't have an expression manager for this expression!");
Assert(d_em == e.d_em, "Different expression managers!");
return d_em->mkExpr(IMPLIES, *this, e);
}
BoolExpr BoolExpr::iteExpr(const BoolExpr& then_e, const BoolExpr& else_e) const {
Assert(d_em != NULL, "Don't have an expression manager for this expression!");
Assert(d_em == then_e.d_em, "Different expression managers!");
Assert(d_em == else_e.d_em, "Different expression managers!");
return d_em->mkExpr(ITE, *this, then_e, else_e);
}
Expr BoolExpr::iteExpr(const Expr& then_e, const Expr& else_e) const {
Assert(d_em != NULL, "Don't have an expression manager for this expression!");
Assert(d_em == then_e.getExprManager(), "Different expression managers!");
Assert(d_em == else_e.getExprManager(), "Different expression managers!");
return d_em->mkExpr(ITE, *this, then_e, else_e);
}
void Expr::printAst(std::ostream & o, int indent) const{
getNode().printAst(o, indent);
}
void Expr::debugPrint(){
#ifndef CVC4_MUZZLE
printAst(Warning());
Warning().flush();
#endif /* ! CVC4_MUZZLE */
}
} // End namespace CVC4
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