void ExpressionFreeVariableLister::visit(Symbolic::IntegerMaxMin* obj, void* arg)
{
std::list<Symbolic::Expression*> expressions = obj->getExpressions();
std::list<Symbolic::Expression*>::iterator iter;
for (iter = expressions.begin(); iter != expressions.end(); iter++) {
Symbolic::Expression* expression = *iter;
expression->accept(this);
}
}
void ExpressionFreeVariableLister::visit(Symbolic::ObjectArrayIndexOf* obj, void* arg)
{
obj->getSearchelement()->accept(this, arg);
std::list<Symbolic::Expression*> list = obj->getArray();
std::list<Symbolic::Expression*>::iterator it = list.begin();
for (; it != list.end(); ++it) {
Symbolic::Expression* elm = (*it);
elm->accept(this);
}
}
void ExpressionPrinter::visit(Symbolic::IntegerMaxMin* obj, void* arg)
{
if (obj->getMax()) {
m_result += "IntegerMax( ";
} else {
m_result += "IntegerMin( ";
}
std::list<Symbolic::Expression*> expressions = obj->getExpressions();
std::list<Symbolic::Expression*>::iterator iter;
for (iter = expressions.begin(); iter != expressions.end(); iter++) {
if (iter != expressions.begin()) {
m_result += ", ";
}
Symbolic::Expression* expression = *iter;
expression->accept(this);
}
m_result += " )";
}
void SMTConstraintWriter::visit(Symbolic::IntegerMaxMin* obj, void* arg)
{
std::list<Symbolic::Expression*> expressions = obj->getExpressions();
std::list<Symbolic::Expression*>::iterator iter;
std::string comp = obj->getMax() ? ">" : "<";
std::string last_var = "0"; // returned if people use Math.max() / Math.min(), correct behaviour would be -infty, but we can't model that
for (iter = expressions.begin(); iter != expressions.end(); iter++) {
Symbolic::Expression* expression = *iter;
expression->accept(this);
if(!checkType(Symbolic::INT)){
error("Integer max/min operation with incorrectly typed argument");
return;
}
std::string new_var = this->emitAndReturnNewTemporary(Symbolic::INT);
if (iter == expressions.begin()) {
// this is the first element
mOutput << "(assert (= " << new_var << " " << mExpressionBuffer << " ))" << std::endl;
} else {
mOutput << "(assert (= " << new_var << " (ite (" << comp << " " << last_var << " " << mExpressionBuffer << " ) " << last_var << " " << mExpressionBuffer << " )))" << std::endl;
}
last_var = new_var;
}
mExpressionBuffer = last_var;
mExpressionType = Symbolic::INT;
}