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/*
* EEZ Generic Firmware
* Copyright (C) 2021-present, Envox d.o.o.
*
* This program 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/>.
*/
#pragma once
#include <eez/flow/private.h>
namespace eez {
namespace flow {
static const size_t STACK_SIZE = 20;
struct EvalStack {
FlowState *flowState;
int componentIndex;
const int32_t *iterators;
Value stack[STACK_SIZE];
size_t sp = 0;
bool push(const Value &value) {
if (sp >= STACK_SIZE) {
throwError(flowState, componentIndex, "Evaluation stack is full\n");
return false;
}
stack[sp++] = value;
return true;
}
bool push(Value *pValue) {
if (sp >= STACK_SIZE) {
return false;
}
stack[sp++] = Value(pValue, VALUE_TYPE_VALUE_PTR);
return true;
}
Value pop() {
return stack[--sp];
}
};
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);
bool evalAssignableExpression(FlowState *flowState, int componentIndex, const uint8_t *instructions, Value &result, const char *errorMessage, int *numInstructionBytes = nullptr, const int32_t *iterators = nullptr);
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);
bool evalAssignableProperty(FlowState *flowState, int componentIndex, int propertyIndex, Value &result, const char *errorMessage, int *numInstructionBytes = nullptr, const int32_t *iterators = nullptr);
} // flow
} // eez