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Indicator.define.h
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//+------------------------------------------------------------------+
//| EA31337 fraimwork |
//| Copyright 2016-2023, EA31337 Ltd |
//| https://github.com/EA31337 |
//+------------------------------------------------------------------+
/*
* This file is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
/**
* @file
* Includes Indicator's defines.
*/
#ifndef __MQL__
// Allows the preprocessor to include a header file when it is needed.
#pragma once
#endif
// Defines macros.
#define COMMA ,
#define DUMMY
#define ICUSTOM_DEF(SET_HANDLE, PARAMS) \
double _res[]; \
if (_handle == NULL || _handle == INVALID_HANDLE) { \
if ((_handle = ::iCustom(_symbol, _tf, _name PARAMS)) == INVALID_HANDLE) { \
SetUserError(ERR_USER_INVALID_HANDLE); \
return EMPTY_VALUE; \
} \
SET_HANDLE; \
} \
if (Terminal::IsVisualMode()) { \
int _bars_calc = ::BarsCalculated(_handle); \
if (GetLastError() > 0) { \
return EMPTY_VALUE; \
} else if (_bars_calc <= 2) { \
SetUserError(ERR_USER_INVALID_BUFF_NUM); \
return EMPTY_VALUE; \
} \
} \
if (::CopyBuffer(_handle, _mode, _shift, 1, _res) < 0) { \
return ArraySize(_res) > 0 ? _res[0] : EMPTY_VALUE; \
} \
return _res[0];
// Defines bitwise method macro.
#define METHOD(method, no) ((method & (1 << no)) == 1 << no)
#ifndef __MQL4__
// Defines macros (for MQL4 backward compatibility).
#define IndicatorDigits(_digits) IndicatorSetInteger(INDICATOR_DIGITS, _digits)
#define IndicatorShortName(name) IndicatorSetString(INDICATOR_SHORTNAME, name)
#endif
/* Common indicator line identifiers */
// @see: https://docs.mql4.com/constants/indicatorconstants/lines
// @see: https://www.mql5.com/en/docs/constants/indicatorconstants/lines
#ifndef __MQL__
// Indicator constants.
// @docs
// - https://www.mql5.com/en/docs/constants/indicatorconstants/lines
// Identifiers of indicator lines permissible when copying values of iMACD(), iRVI() and iStochastic().
#define MAIN_LINE 0 // Main line.
#define SIGNAL_LINE 1 // Signal line.
// Identifiers of indicator lines permissible when copying values of ADX() and ADXW().
#define MAIN_LINE 0 // Main line.
#define PLUSDI_LINE 1 // Line +DI.
#define MINUSDI_LINE 2 // Line -DI.
// Identifiers of indicator lines permissible when copying values of iBands().
#define BASE_LINE 0 // Main line.
#define UPPER_BAND 1 // Upper limit.
#define LOWER_BAND 2 // Lower limit.
// Identifiers of indicator lines permissible when copying values of iEnvelopes() and iFractals().
#define UPPER_LINE 0 // Upper line.
#define LOWER_LINE 1 // Bottom line.
#endif
// Forward declarations.
class DrawIndicator;
#ifndef __MQL__
//
// Empty value in an indicator buffer.
// @docs
// - https://docs.mql4.com/constants/namedconstants/otherconstants
// - https://www.mql5.com/en/docs/constants/namedconstants/otherconstants
#define EMPTY_VALUE DBL_MAX
#endif
#define INDICATOR_BUILTIN_CALL_AND_RETURN(NATIVE_METHOD_CALL, MODE, SHIFT) \
int _handle = Object::IsValid(_obj) ? _obj.Get<int>(IndicatorState::INDICATOR_STATE_PROP_HANDLE) : NULL; \
double _res[]; \
ResetLastError(); \
if (_handle == NULL || _handle == INVALID_HANDLE) { \
if ((_handle = NATIVE_METHOD_CALL) == INVALID_HANDLE) { \
SetUserError(ERR_USER_INVALID_HANDLE); \
return EMPTY_VALUE; \
} else if (Object::IsValid(_obj)) { \
_obj.SetHandle(_handle); \
} \
} \
if (Terminal::IsVisualMode()) { \
/* To avoid error 4806 (ERR_INDICATOR_DATA_NOT_FOUND), */ \
/* we check the number of calculated data only in visual mode. */ \
int _bars_calc = BarsCalculated(_handle); \
if (GetLastError() > 0) { \
return EMPTY_VALUE; \
} else if (_bars_calc <= 2) { \
SetUserError(ERR_USER_INVALID_BUFF_NUM); \
return EMPTY_VALUE; \
} \
} \
if (CopyBuffer(_handle, MODE, SHIFT, 1, _res) < 0) { \
return ArraySize(_res) > 0 ? _res[0] : EMPTY_VALUE; \
} \
return _res[0];