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/********************* */
/*! \file idl_assertion_db.h
** \verbatim
** Top contributors (to current version):
** Dejan Jovanovic, Morgan Deters
** This file is part of the CVC4 project.
** Copyright (c) 2009-2018 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
**/
#pragma once
#include "theory/idl/idl_assertion.h"
#include "context/cdlist.h"
namespace CVC4 {
namespace theory {
namespace idl {
/**
* Context-dependent database assertions, organized by variable. Each variable
* can be associated a list of IDL assertions. The list of assertions can
* be iterated over using the provided iterator class.
*/
class IDLAssertionDB {
/** Elements of the assertion lists */
struct IDLAssertionListElement {
/** The assertion itself */
IDLAssertion d_assertion;
/** The index of the previous element (-1 for null) */
unsigned d_previous;
IDLAssertionListElement(const IDLAssertion& assertion, unsigned previous)
: d_assertion(assertion), d_previous(previous)
{}
};
/** All assertions in a context dependent stack */
context::CDList<IDLAssertionListElement> d_assertions;
typedef context::CDHashMap<TNode, unsigned, TNodeHashFunction> var_to_unsigned_map;
/** Map from variables to the first element of their list */
var_to_unsigned_map d_variableLists;
public:
/** Create a new assertion database */
IDLAssertionDB(context::Context* c);
/** Add a new assertion, attach to the list of the given variable */
void add(const IDLAssertion& assertion, TNode var);
/** Iteration over the constraints of a variable */
class iterator {
/** The database */
const IDLAssertionDB& d_db;
/** Index of the current constraint */
unsigned d_current;
public:
/** Construct the iterator for the variable */
iterator(IDLAssertionDB& db, TNode var);
/** Is this iterator done */
bool done() const { return d_current == (unsigned)(-1); }
/** Next element */
void next();
/** Get the assertion */
IDLAssertion get() const;
};
};
}
}
}
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