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//===-- MIUtilMapIdToVariant.h ----------------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#pragma once
// Third party headers:
#include <map>
// In-house headers:
#include "MICmnBase.h"
#include "MICmnResources.h"
#include "MIUtilString.h"
#include "MIUtilVariant.h"
//++ ============================================================================
// Details: MI common code utility class. Map type container that hold general
// object types (by being a variant wrapper)
// objects by ID.
//--
class CMIUtilMapIdToVariant : public CMICmnBase
{
// Methods:
public:
/* ctor */ CMIUtilMapIdToVariant();
template <typename T> bool Add(const CMIUtilString &vId, const T &vData);
void Clear();
template <typename T> bool Get(const CMIUtilString &vId, T &vrwData, bool &vrwbFound) const;
bool HaveAlready(const CMIUtilString &vId) const;
bool IsEmpty() const;
bool Remove(const CMIUtilString &vId);
// Overridden:
public:
// From CMICmnBase
/* dtor */ ~CMIUtilMapIdToVariant() override;
// Typedefs:
private:
typedef std::map<CMIUtilString, CMIUtilVariant> MapKeyToVariantValue_t;
typedef std::pair<CMIUtilString, CMIUtilVariant> MapPairKeyToVariantValue_t;
// Methods:
private:
bool IsValid(const CMIUtilString &vId) const;
// Attributes:
MapKeyToVariantValue_t m_mapKeyToVariantValue;
};
//++ ------------------------------------------------------------------------------------
// Details: Add to *this container a data object of general type identified by an ID.
// If the data with that ID already exists in the container it is replace with
// the new data specified.
// Type: Method.
// Args: T - The data object's variable type.
// vId - (R) Unique ID i.e. GUID.
// vData - (R) The general data object to be stored of some type.
// Return: MIstatus::success - Function succeeded.
// MIstatus::failure - Function failed.
// Throws: None.
//--
template <typename T>
bool
CMIUtilMapIdToVariant::Add(const CMIUtilString &vId, const T &vData)
{
if (!IsValid(vId))
{
SetErrorDescription(CMIUtilString::Format(MIRSRC(IDS_VARIANT_ERR_MAP_KEY_INVALID), vId.c_str()));
return MIstatus::failure;
}
const bool bOk = HaveAlready(vId) ? Remove(vId) : MIstatus::success;
if (bOk)
{
CMIUtilVariant data;
data.Set<T>(vData);
MapPairKeyToVariantValue_t pr(vId, data);
m_mapKeyToVariantValue.insert(pr);
}
return bOk;
}
//++ ------------------------------------------------------------------------------------
// Details: Retrieve a data object from *this container identified by the specified ID.
// Type: Method.
// Args: T - The data object's variable type.
// vId - (R) Unique ID i.e. GUID.
// vrwData - (W) Copy of the data object held.
// vrwbFound - (W) True = data found, false = data not found.
// Return: MIstatus::success - Function succeeded.
// MIstatus::failure - Function failed.
// Throws: None.
//--
template <typename T>
bool
CMIUtilMapIdToVariant::Get(const CMIUtilString &vId, T &vrwData, bool &vrwbFound) const
{
vrwbFound = false;
if (!IsValid(vId))
{
SetErrorDescription(CMIUtilString::Format(MIRSRC(IDS_VARIANT_ERR_MAP_KEY_INVALID), vId.c_str()));
return MIstatus::failure;
}
const MapKeyToVariantValue_t::const_iterator it = m_mapKeyToVariantValue.find(vId);
if (it != m_mapKeyToVariantValue.end())
{
const CMIUtilVariant &rData = (*it).second;
const T *pDataObj = rData.Get<T>();
if (pDataObj != nullptr)
{
vrwbFound = true;
vrwData = *pDataObj;
return MIstatus::success;
}
else
{
SetErrorDescription(MIRSRC(IDS_VARIANT_ERR_USED_BASECLASS));
return MIstatus::failure;
}
}
return MIstatus::success;
}
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