Matt Corcoran
64 lines
1.9 KiB
Plaintext
64 lines
1.9 KiB
Plaintext
#include <Trade/SymbolInfo.mqh>
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class AtrHandleManager {
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private:
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struct AtrEntry {
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string symbol;
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ENUM_TIMEFRAMES tf;
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int period;
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int handle;
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};
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AtrEntry cache[]; // internal cache of ATR handles
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public:
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// Get or create an ATR handle for a specific symbol/timeframe/period
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int get_atr_handle(string symbol, ENUM_TIMEFRAMES tf, int period) {
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for (int i = 0; i < ArraySize(cache); i++) {
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if (cache[i].symbol == symbol && cache[i].tf == tf && cache[i].period == period)
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return cache[i].handle;
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}
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int handle = iATR(symbol, tf, period);
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if (handle == INVALID_HANDLE) {
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Print("Failed to create ATR handle for ", symbol);
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return INVALID_HANDLE;
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}
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AtrEntry entry = { symbol, tf, period, handle };
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ArrayResize(cache, ArraySize(cache) + 1);
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cache[ArraySize(cache) - 1] = entry;
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return handle;
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}
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// Get ATR value from buffer (returns EMPTY_VALUE if failure)
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double get_atr_value(string symbol, ENUM_TIMEFRAMES tf, int period, int shift = 1) {
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int handle = get_atr_handle(symbol, tf, period);
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if (handle == INVALID_HANDLE) {
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PrintFormat("Invalid ATR handle for %s (TF=%d, Period=%d)", symbol, tf, period);
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return EMPTY_VALUE;
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}
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double buffer[];
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ArraySetAsSeries(buffer, true);
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if (CopyBuffer(handle, 0, shift, 1, buffer) != 1 || buffer[0] == EMPTY_VALUE) {
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PrintFormat("Failed to read ATR buffer for %s shift=%d", symbol, shift);
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return EMPTY_VALUE;
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}
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return buffer[0];
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}
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// Release all handles in the cache
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void release_handles() {
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for (int i = 0; i < ArraySize(cache); i++) {
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if (cache[i].handle != INVALID_HANDLE)
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IndicatorRelease(cache[i].handle);
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}
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ArrayResize(cache, 0);
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}
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};
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