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67 lines
2.3 KiB
67 lines
2.3 KiB
2 years ago
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/*
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* EEZ Generic 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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#pragma once
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#include <eez/flow/private.h>
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namespace eez {
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namespace flow {
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static const size_t STACK_SIZE = 20;
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struct EvalStack {
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FlowState *flowState;
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int componentIndex;
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const int32_t *iterators;
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Value stack[STACK_SIZE];
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size_t sp = 0;
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bool push(const Value &value) {
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if (sp >= STACK_SIZE) {
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throwError(flowState, componentIndex, "Evaluation stack is full\n");
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return false;
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}
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stack[sp++] = value;
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return true;
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}
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bool push(Value *pValue) {
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if (sp >= STACK_SIZE) {
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return false;
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}
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stack[sp++] = Value(pValue, VALUE_TYPE_VALUE_PTR);
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return true;
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}
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Value pop() {
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return stack[--sp];
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}
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};
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bool evalExpression(FlowState *flowState, int componentIndex, const uint8_t *instructions, Value &result, const char *errorMessage, int *numInstructionBytes = nullptr, const int32_t *iterators = nullptr, eez::gui::DataOperationEnum operation = eez::gui::DATA_OPERATION_GET);
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bool evalAssignableExpression(FlowState *flowState, int componentIndex, const uint8_t *instructions, Value &result, const char *errorMessage, int *numInstructionBytes = nullptr, const int32_t *iterators = nullptr);
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bool evalProperty(FlowState *flowState, int componentIndex, int propertyIndex, Value &result, const char *errorMessage, int *numInstructionBytes = nullptr, const int32_t *iterators = nullptr, eez::gui::DataOperationEnum operation = eez::gui::DATA_OPERATION_GET);
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bool evalAssignableProperty(FlowState *flowState, int componentIndex, int propertyIndex, Value &result, const char *errorMessage, int *numInstructionBytes = nullptr, const int32_t *iterators = nullptr);
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} // flow
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} // eez
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