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/* Distributed under the OSI-approved BSD 3-Clause License. See accompanying
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file Copyright.txt or https://cmake.org/licensing for details. */
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#include "cmVariableWatch.h"
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#include "cmAlgorithms.h"
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#include "cm_auto_ptr.hxx"
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#include <algorithm>
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#include <utility>
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static const char* const cmVariableWatchAccessStrings[] = {
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"READ_ACCESS", "UNKNOWN_READ_ACCESS", "UNKNOWN_DEFINED_ACCESS",
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"MODIFIED_ACCESS", "REMOVED_ACCESS", "NO_ACCESS"
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};
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const char* cmVariableWatch::GetAccessAsString(int access_type)
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{
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if (access_type < 0 || access_type >= cmVariableWatch::NO_ACCESS) {
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return "NO_ACCESS";
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}
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return cmVariableWatchAccessStrings[access_type];
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}
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cmVariableWatch::cmVariableWatch()
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{
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}
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template <typename C>
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void deleteAllSecond(typename C::value_type it)
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{
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cmDeleteAll(it.second);
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}
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cmVariableWatch::~cmVariableWatch()
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{
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std::for_each(this->WatchMap.begin(), this->WatchMap.end(),
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deleteAllSecond<cmVariableWatch::StringToVectorOfPairs>);
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}
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bool cmVariableWatch::AddWatch(const std::string& variable, WatchMethod method,
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void* client_data /*=0*/,
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DeleteData delete_data /*=0*/)
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{
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CM_AUTO_PTR<cmVariableWatch::Pair> p(new cmVariableWatch::Pair);
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p->Method = method;
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p->ClientData = client_data;
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p->DeleteDataCall = delete_data;
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cmVariableWatch::VectorOfPairs* vp = &this->WatchMap[variable];
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cmVariableWatch::VectorOfPairs::size_type cc;
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for (cc = 0; cc < vp->size(); cc++) {
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cmVariableWatch::Pair* pair = (*vp)[cc];
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if (pair->Method == method && client_data &&
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client_data == pair->ClientData) {
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// Callback already exists
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return false;
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}
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}
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vp->push_back(p.release());
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return true;
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}
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void cmVariableWatch::RemoveWatch(const std::string& variable,
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WatchMethod method, void* client_data /*=0*/)
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{
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if (!this->WatchMap.count(variable)) {
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return;
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}
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cmVariableWatch::VectorOfPairs* vp = &this->WatchMap[variable];
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cmVariableWatch::VectorOfPairs::iterator it;
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for (it = vp->begin(); it != vp->end(); ++it) {
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if ((*it)->Method == method &&
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// If client_data is NULL, we want to disconnect all watches against
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// the given method; otherwise match ClientData as well.
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(!client_data || (client_data == (*it)->ClientData))) {
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delete *it;
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vp->erase(it);
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return;
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}
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}
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}
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bool cmVariableWatch::VariableAccessed(const std::string& variable,
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int access_type, const char* newValue,
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const cmMakefile* mf) const
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{
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cmVariableWatch::StringToVectorOfPairs::const_iterator mit =
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this->WatchMap.find(variable);
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if (mit != this->WatchMap.end()) {
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const cmVariableWatch::VectorOfPairs* vp = &mit->second;
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cmVariableWatch::VectorOfPairs::const_iterator it;
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for (it = vp->begin(); it != vp->end(); it++) {
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(*it)->Method(variable, access_type, (*it)->ClientData, newValue, mf);
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}
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return true;
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}
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return false;
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}
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