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