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#include "CallChain.h"
#include "cmsis.h"
namespace mbed {
CallChain::CallChain(int size) : _chain(), _size(size), _elements(0) {
_chain = new pFunctionPointer_t[size]();
}
CallChain::~CallChain() {
clear();
delete _chain;
}
pFunctionPointer_t CallChain::add(void (*function)(void)) {
return common_add(new FunctionPointer(function));
}
pFunctionPointer_t CallChain::add_front(void (*function)(void)) {
return common_add_front(new FunctionPointer(function));
}
int CallChain::size() const {
return _elements;
}
pFunctionPointer_t CallChain::get(int i) const {
if (i < 0 || i >= _elements)
return NULL;
return _chain[i];
}
int CallChain::find(pFunctionPointer_t f) const {
for (int i = 0; i < _elements; i++)
if (f == _chain[i])
return i;
return -1;
}
void CallChain::clear() {
for(int i = 0; i < _elements; i ++) {
delete _chain[i];
_chain[i] = NULL;
}
_elements = 0;
}
bool CallChain::remove(pFunctionPointer_t f) {
int i;
if ((i = find(f)) == -1)
return false;
if (i != _elements - 1)
memmove(_chain + i, _chain + i + 1, (_elements - i - 1) * sizeof(pFunctionPointer_t));
delete f;
_elements --;
return true;
}
void CallChain::call() {
for(int i = 0; i < _elements; i++)
_chain[i]->call();
}
void CallChain::_check_size() {
if (_elements < _size)
return;
_size = (_size < 4) ? 4 : _size + 4;
pFunctionPointer_t* new_chain = new pFunctionPointer_t[_size]();
memcpy(new_chain, _chain, _elements * sizeof(pFunctionPointer_t));
delete _chain;
_chain = new_chain;
}
pFunctionPointer_t CallChain::common_add(pFunctionPointer_t pf) {
_check_size();
_chain[_elements] = pf;
_elements ++;
return pf;
}
pFunctionPointer_t CallChain::common_add_front(pFunctionPointer_t pf) {
_check_size();
memmove(_chain + 1, _chain, _elements * sizeof(pFunctionPointer_t));
_chain[0] = pf;
_elements ++;
return pf;
}
} // namespace mbed
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