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expressionserializer.h
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Tue, Jul 7, 7:44 AM
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expressionserializer.h
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/*
* expressionserializer.h
*
* Created on: Jan 4, 2016
* Author: pgess
*/
#ifndef SRC_EXPRESSIONSERIALIZER_H_
#define SRC_EXPRESSIONSERIALIZER_H_
#include "ast.h"
#include <string>
#include <boost/optional.hpp>
namespace xreate {
struct PackedExpression{
PackedExpression(){};
PackedExpression(PackedExpression&& other);
~PackedExpression();
void operator<< (const std::pair<size_t, size_t>& value);
char* operator*(){return __storage;}
bool operator==(const PackedExpression& other) const;
bool operator!=(const PackedExpression& other) const;
bool operator<(const PackedExpression& other) const;
private:
PackedExpression (const PackedExpression&)=delete;
PackedExpression& operator=(const PackedExpression&)=delete;
PackedExpression& operator=(PackedExpression&&)=delete;
char* __storage = nullptr;
size_t size =0;
unsigned char countRemainedBits =0;
};
typedef boost::optional<PackedExpression> OptionalPackedExpression;
class ExpressionSerializerPrivate;
class ExpressionSerializer {
public:
template<class Container>
ExpressionSerializer(const Container& source): ExpressionSerializer(){
for (const Expression& e: source) {
registerExpression(e);
}
}
template<class Container, class Transformer>
ExpressionSerializer(const Container& source, Transformer op): ExpressionSerializer(){
for (const typename Container::value_type& e: source) {
registerExpression(op(e));
}
}
ExpressionSerializer(ExpressionSerializer&& other)
: strategy(other.strategy) {other.strategy = 0; }
virtual ~ExpressionSerializer();
PackedExpression getId(const Expression& e);
OptionalPackedExpression getIdOptional(const Expression& e) const;
private:
ExpressionSerializerPrivate* strategy;
void registerExpression(const Expression&e);
ExpressionSerializer();
};
class ExpressionSerializerIntegral: private std::vector<Expression>{
typedef std::vector<Expression> PARENT;
public:
ExpressionSerializerIntegral();
ExpressionSerializerIntegral(const std::vector<Expression>&& expressions);
template<class Iterator>
ExpressionSerializerIntegral(Iterator first, Iterator last)
: ExpressionSerializerIntegral(std::vector<Expression>(first, last)){}
ExpressionSerializerIntegral(ExpressionSerializerIntegral&& other)
: PARENT(std::move(other)), __registry(std::move(other.__registry)), serializer(std::move(other.serializer)){}
size_t getId(const Expression& e) const;
boost::optional<size_t> getIdOptional(const Expression& e) const;
const Expression& get(size_t id) const;
size_t size() const;
size_t count(const Expression& e) const;
ExpressionSerializerIntegral::const_iterator begin() const;
ExpressionSerializerIntegral::const_iterator end() const;
private:
ExpressionSerializerIntegral(const ExpressionSerializerIntegral&)=delete;
std::map<PackedExpression, size_t> __registry;
ExpressionSerializer serializer;
};
} /* namespace xreate */
#endif /* SRC_EXPRESSIONSERIALIZER_H_ */
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