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/********************* */
/*! \file pickle_data.h
** \verbatim
** Original author: Morgan Deters <mdeters@cs.nyu.edu>
** Major contributors: none
** Minor contributors (to current version): none
** 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 This is a "pickle" for expressions, CVC4-internal view
**
** This is the CVC4-internal view (private data structure) for a
** "pickle" for expressions. The public-facing view is a "Pickle",
** which just points to a PickleData. A pickle is a binary
** serialization of an expression that can be converted back into an
** expression in the same or another ExprManager.
**/
#include "cvc4_private.h"
#ifndef __CVC4__PICKLE_DATA_H
#define __CVC4__PICKLE_DATA_H
#include <sstream>
#include <deque>
#include <stack>
#include <exception>
#include "expr/expr.h"
#include "expr/node.h"
#include "expr/node_manager.h"
#include "expr/expr_manager.h"
#include "expr/variable_type_map.h"
#include "expr/kind.h"
#include "expr/metakind.h"
namespace CVC4 {
class NodeManager;
namespace expr {
namespace pickle {
const unsigned NBITS_BLOCK = 32;
const unsigned NBITS_KIND = __CVC4__EXPR__NODE_VALUE__NBITS__KIND;
const unsigned NBITS_NCHILDREN = __CVC4__EXPR__NODE_VALUE__NBITS__NCHILDREN;
const unsigned NBITS_CONSTBLOCKS = 32;
struct BlockHeader {
unsigned d_kind : NBITS_KIND;
};/* struct BlockHeader */
struct BlockHeaderOperator {
unsigned d_kind : NBITS_KIND;
unsigned d_nchildren : NBITS_NCHILDREN;
unsigned : NBITS_BLOCK - (NBITS_KIND + NBITS_NCHILDREN);
};/* struct BlockHeaderOperator */
struct BlockHeaderConstant {
unsigned d_kind : NBITS_KIND;
unsigned d_constblocks : NBITS_BLOCK - NBITS_KIND;
};/* struct BlockHeaderConstant */
struct BlockHeaderVariable {
unsigned d_kind : NBITS_KIND;
unsigned : NBITS_BLOCK - NBITS_KIND;
};/* struct BlockHeaderVariable */
struct BlockBody {
unsigned d_data : NBITS_BLOCK;
};/* struct BlockBody */
union Block {
BlockHeader d_header;
BlockHeaderConstant d_headerConstant;
BlockHeaderOperator d_headerOperator;
BlockHeaderVariable d_headerVariable;
BlockBody d_body;
};/* union Block */
class PickleData {
typedef std::deque<Block> BlockDeque;
BlockDeque d_blocks;
public:
PickleData& operator<<(Block b) {
enqueue(b);
return (*this);
}
std::string toString() const;
void enqueue(Block b) {
d_blocks.push_back(b);
}
Block dequeue() {
Block b = d_blocks.front();
d_blocks.pop_front();
return b;
}
bool empty() const { return d_blocks.empty(); }
uint32_t size() const { return d_blocks.size(); }
void swap(PickleData& other){
d_blocks.swap(other.d_blocks);
}
void writeToStringStream(std::ostringstream& oss) const;
};/* class PickleData */
}/* CVC4::expr::pickle namespace */
}/* CVC4::expr namespace */
}/* CVC4 namespace */
#endif /* __CVC4__PICKLE_DATA_H */
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