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102 lines
3.9 KiB
102 lines
3.9 KiB
/* |
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* EEZ Modular Firmware |
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* Copyright (C) 2021-present, Envox d.o.o. |
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* |
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* This program is free software: you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation, either version 3 of the License, or |
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* (at your option) any later version. |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* You should have received a copy of the GNU General Public License |
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* along with this program. If not, see <http://www.gnu.org/licenses/>. |
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*/ |
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#include <eez/flow/components.h> |
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#include <eez/flow/flow_defs_v3.h> |
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#include <eez/flow/expression.h> |
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#include <eez/flow/operations.h> |
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using namespace eez::gui; |
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namespace eez { |
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namespace flow { |
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struct LoopComponenentExecutionState : public ComponenentExecutionState { |
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Value dstValue; |
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Value toValue; |
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Value currentValue; |
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}; |
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void executeLoopComponent(FlowState *flowState, unsigned componentIndex) { |
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auto component = flowState->flow->components[componentIndex]; |
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auto loopComponentExecutionState = (LoopComponenentExecutionState *)flowState->componenentExecutionStates[componentIndex]; |
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// restart loop if entered through "start" input |
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static const unsigned START_INPUT_INDEX = 0; |
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auto startInputIndex = component->inputs[START_INPUT_INDEX]; |
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if (flowState->values[startInputIndex].type != VALUE_TYPE_UNDEFINED) { |
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if (loopComponentExecutionState) { |
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deallocateComponentExecutionState(flowState, componentIndex); |
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loopComponentExecutionState = nullptr; |
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} |
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} else { |
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if (!loopComponentExecutionState) { |
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return; |
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} |
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} |
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Value stepValue; |
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if (!evalProperty(flowState, componentIndex, defs_v3::LOOP_ACTION_COMPONENT_PROPERTY_STEP, stepValue, "Failed to evaluate Step in Loop")) { |
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return; |
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} |
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if (!loopComponentExecutionState) { |
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Value dstValue; |
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if (!evalAssignableProperty(flowState, componentIndex, defs_v3::LOOP_ACTION_COMPONENT_PROPERTY_VARIABLE, dstValue, "Failed to evaluate Variable in Loop")) { |
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return; |
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} |
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Value fromValue; |
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if (!evalProperty(flowState, componentIndex, defs_v3::LOOP_ACTION_COMPONENT_PROPERTY_FROM, fromValue, "Failed to evaluate From in Loop")) { |
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return; |
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} |
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Value toValue; |
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if (!evalProperty(flowState, componentIndex, defs_v3::LOOP_ACTION_COMPONENT_PROPERTY_TO, toValue, "Failed to evaluate To in Loop")) { |
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return; |
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} |
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loopComponentExecutionState = allocateComponentExecutionState<LoopComponenentExecutionState>(flowState, componentIndex); |
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loopComponentExecutionState->dstValue = dstValue; |
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loopComponentExecutionState->toValue = toValue; |
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loopComponentExecutionState->currentValue = fromValue; |
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} else { |
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loopComponentExecutionState->currentValue = op_add(loopComponentExecutionState->currentValue, stepValue); |
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} |
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bool condition; |
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if (stepValue.getInt() > 0) { |
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condition = op_great(loopComponentExecutionState->currentValue, loopComponentExecutionState->toValue).toBool(); |
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} else { |
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condition = op_less(loopComponentExecutionState->currentValue, loopComponentExecutionState->toValue).toBool(); |
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} |
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if (condition) { |
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// done |
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deallocateComponentExecutionState(flowState, componentIndex); |
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propagateValue(flowState, componentIndex, component->outputs.count - 1); |
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} else { |
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assignValue(flowState, componentIndex, loopComponentExecutionState->dstValue, loopComponentExecutionState->currentValue); |
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propagateValueThroughSeqout(flowState, componentIndex); |
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} |
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} |
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} // namespace flow |
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} // namespace eez
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