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// Different kinds of abstract storage locations: Constants, Global and Local Storage, Temporaries, ...
#pragma once
#include "data.h"
#include <cstdint>
#include <string>
#include <vector>
namespace FlowGraph {
// Parameter to Data class, defining where the data is stored
// Explicitely not including size
// But including label/data/pointer
// -> includes identity of certain data point
class Storage
{
public:
virtual ~Storage() {} // force class to be polymorphic, for smart pointers
};
class Constant: public Storage
{
public:
Constant(std::vector<uint8_t>& value): m_value(value) {} // little endian data
const std::vector<uint8_t>& value() const { return m_value; }
private:
std::vector<uint8_t> m_value;
};
class GlobalStorage : public Storage
{
public:
GlobalStorage(const std::string& name): m_name(name) {}
const std::string& name() const { return m_name; }
private:
std::string m_name;
};
// Provide a context for local temporaries name generation
class LocalScope
{
public:
LocalScope() = default;
size_t getNewIndex() { return m_index++; }
private:
size_t m_index{ 0 };
};
class LocalStorage : public Storage
{
public:
LocalStorage(LocalScope& scope, const std::string& name): m_name(name) {}
const std::string& name() const { return m_name; }
private:
std::string m_name;
};
// intermediate results, anonymous values
// use generated name
class TemporaryStorage : public Storage
{
public:
TemporaryStorage(LocalScope& scope);
const std::string& name() const { return m_name; }
private:
std::string m_name;
};
// dereferenced pointer
class PointeeStorage : public Storage
{
public:
PointeeStorage(const Data& pointer, const Data& offset): m_pointer(pointer), m_offset(offset) {
if (pointer.type() != DataType::Pointer)
throw std::runtime_error("Pointer argument must be a DataType::Pointer");
if (offset.type() != DataType::Size)
throw std::runtime_error("Offset argument must be a DataType::Size");
}
Data pointer() { return m_pointer; }
Data offset() { return m_offset; }
private:
Data m_pointer;
Data m_offset;
};
}
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