forked from OSchip/llvm-project
137 lines
4.2 KiB
C++
137 lines
4.2 KiB
C++
//===-- MIUtilMapIdToVariant.h ----------------------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#pragma once
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// Third party headers:
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#include <map>
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// In-house headers:
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#include "MICmnBase.h"
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#include "MICmnResources.h"
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#include "MIUtilString.h"
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#include "MIUtilVariant.h"
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//++ ============================================================================
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// Details: MI common code utility class. Map type container that hold general
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// object types (by being a variant wrapper)
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// objects by ID.
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// Gotchas: None.
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// Authors: Illya Rudkin 19/06/2014.
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// Changes: None.
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//--
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class CMIUtilMapIdToVariant : public CMICmnBase
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{
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// Methods:
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public:
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/* ctor */ CMIUtilMapIdToVariant(void);
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template <typename T> bool Add(const CMIUtilString &vId, const T &vData);
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void Clear(void);
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template <typename T> bool Get(const CMIUtilString &vId, T &vrwData, bool &vrwbFound) const;
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bool HaveAlready(const CMIUtilString &vId) const;
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bool IsEmpty(void) const;
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bool Remove(const CMIUtilString &vId);
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// Overridden:
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public:
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// From CMICmnBase
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/* dtor */ ~CMIUtilMapIdToVariant(void) override;
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// Typedefs:
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private:
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typedef std::map<CMIUtilString, CMIUtilVariant> MapKeyToVariantValue_t;
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typedef std::pair<CMIUtilString, CMIUtilVariant> MapPairKeyToVariantValue_t;
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// Methods:
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private:
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bool IsValid(const CMIUtilString &vId) const;
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// Attributes:
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MapKeyToVariantValue_t m_mapKeyToVariantValue;
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};
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//++ ------------------------------------------------------------------------------------
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// Details: Add to *this container a data object of general type identified by an ID.
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// If the data with that ID already exists in the container it is replace with
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// the new data specified.
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// Type: Method.
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// Args: T - The data object's variable type.
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// vId - (R) Unique ID i.e. GUID.
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// vData - (R) The general data object to be stored of some type.
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// Return: MIstatus::success - Function succeeded.
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// MIstatus::failure - Function failed.
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// Throws: None.
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//--
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template <typename T>
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bool
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CMIUtilMapIdToVariant::Add(const CMIUtilString &vId, const T &vData)
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{
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if (!IsValid(vId))
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{
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SetErrorDescription(CMIUtilString::Format(MIRSRC(IDS_VARIANT_ERR_MAP_KEY_INVALID), vId.c_str()));
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return MIstatus::failure;
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}
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const bool bOk = HaveAlready(vId) ? Remove(vId) : MIstatus::success;
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if (bOk)
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{
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CMIUtilVariant data;
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data.Set<T>(vData);
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MapPairKeyToVariantValue_t pr(vId, data);
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m_mapKeyToVariantValue.insert(pr);
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}
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return bOk;
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}
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//++ ------------------------------------------------------------------------------------
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// Details: Retrieve a data object from *this container identified by the specified ID.
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// Type: Method.
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// Args: T - The data object's variable type.
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// vId - (R) Unique ID i.e. GUID.
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// vrwData - (W) Copy of the data object held.
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// vrwbFound - (W) True = data found, false = data not found.
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// Return: MIstatus::success - Function succeeded.
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// MIstatus::failure - Function failed.
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// Throws: None.
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//--
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template <typename T>
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bool
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CMIUtilMapIdToVariant::Get(const CMIUtilString &vId, T &vrwData, bool &vrwbFound) const
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{
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vrwbFound = false;
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if (!IsValid(vId))
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{
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SetErrorDescription(CMIUtilString::Format(MIRSRC(IDS_VARIANT_ERR_MAP_KEY_INVALID), vId.c_str()));
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return MIstatus::failure;
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}
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const MapKeyToVariantValue_t::const_iterator it = m_mapKeyToVariantValue.find(vId);
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if (it != m_mapKeyToVariantValue.end())
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{
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const CMIUtilVariant &rData = (*it).second;
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const T *pDataObj = rData.Get<T>();
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if (pDataObj != nullptr)
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{
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vrwbFound = true;
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vrwData = *pDataObj;
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return MIstatus::success;
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}
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else
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{
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SetErrorDescription(MIRSRC(IDS_VARIANT_ERR_USED_BASECLASS));
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return MIstatus::failure;
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}
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}
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return MIstatus::success;
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}
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