1772622772
``` git grep -lz 'Copyright.txt or https://cmake.org/licensing ' | while IFS= read -r -d $'\0' f ; do sed -i '/Copyright.txt or https:\/\/cmake.org\/licensing / { s/Copyright.txt/LICENSE.rst/ }' "$f" ; done ```
83 lines
2.0 KiB
C++
83 lines
2.0 KiB
C++
/* Distributed under the OSI-approved BSD 3-Clause License. See accompanying
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file LICENSE.rst or https://cmake.org/licensing for details. */
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#pragma once
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#include "cmConfigure.h" // IWYU pragma: keep
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#include <map>
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#include <memory>
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#include <string>
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#include <vector>
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class cmMakefile;
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/** \class cmVariableWatch
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* \brief Helper class for watching of variable accesses.
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*
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* Calls function when variable is accessed
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*/
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class cmVariableWatch
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{
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public:
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using WatchMethod = void (*)(std::string const&, int, void*, char const*,
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cmMakefile const*);
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using DeleteData = void (*)(void*);
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cmVariableWatch();
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~cmVariableWatch();
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/**
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* Add watch to the variable
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*/
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bool AddWatch(std::string const& variable, WatchMethod method,
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void* client_data = nullptr, DeleteData delete_data = nullptr);
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void RemoveWatch(std::string const& variable, WatchMethod method,
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void* client_data = nullptr);
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/**
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* This method is called when variable is accessed
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*/
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bool VariableAccessed(std::string const& variable, int access_type,
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char const* newValue, cmMakefile const* mf) const;
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/**
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* Different access types.
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*/
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enum
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{
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VARIABLE_READ_ACCESS,
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UNKNOWN_VARIABLE_READ_ACCESS,
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UNKNOWN_VARIABLE_DEFINED_ACCESS,
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VARIABLE_MODIFIED_ACCESS,
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VARIABLE_REMOVED_ACCESS,
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NO_ACCESS
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};
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/**
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* Return the access as string
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*/
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static std::string const& GetAccessAsString(int access_type);
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protected:
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struct Pair
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{
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WatchMethod Method = nullptr;
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void* ClientData = nullptr;
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DeleteData DeleteDataCall = nullptr;
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~Pair()
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{
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if (this->DeleteDataCall && this->ClientData) {
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this->DeleteDataCall(this->ClientData);
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}
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}
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Pair() = default;
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Pair(Pair const&) = delete;
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Pair& operator=(Pair const&) = delete;
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};
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using VectorOfPairs = std::vector<std::shared_ptr<Pair>>;
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using StringToVectorOfPairs = std::map<std::string, VectorOfPairs>;
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StringToVectorOfPairs WatchMap;
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};
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