load_generator/linux/plugins/org.eclipse.app4mc.slg.linux/src/org/eclipse/app4mc/slg/linux/generators/LinuxLabelAccessTranslationUnit.java

/**
 ********************************************************************************
 * Copyright (c) 2020-2021 Robert Bosch GmbH.
 * 
 * This program and the accompanying materials are made
 * available under the terms of the Eclipse Public License 2.0
 * which is available at https://www.eclipse.org/legal/epl-2.0/
 * 
 * SPDX-License-Identifier: EPL-2.0
 * 
 * Contributors:
 *     Robert Bosch GmbH - initial API and implementation
 ********************************************************************************
 */

package org.eclipse.app4mc.slg.linux.generators;

import static org.eclipse.app4mc.amalthea.model.LabelAccessEnum._UNDEFINED_;

import org.eclipse.app4mc.amalthea.model.LabelAccess;
import org.eclipse.app4mc.amalthea.model.MinAvgMaxStatistic;
import org.eclipse.app4mc.amalthea.model.NumericStatistic;
import org.eclipse.app4mc.amalthea.model.SingleValueStatistic;
import org.eclipse.app4mc.transformation.util.OutputBuffer;

public class LinuxLabelAccessTranslationUnit extends LinuxBaseTranslationUnit {

	private final LinuxLabelTranslationUnit tuLabel;
	private final LabelAccess labelAccess;

	public LinuxLabelAccessTranslationUnit(
			final OutputBuffer outputBuffer,
			final LinuxLabelTranslationUnit tuLabel,
			final LabelAccess labelAccess) {
		super(outputBuffer);
		this.tuLabel = tuLabel;
		this.labelAccess = labelAccess;
	}

	// translation unit specific settings
	
	@Override
	public String getBasePath() { return this.tuLabel.getBasePath(); }

	@Override
	public String getModuleName() { return this.tuLabel.getModuleName(); }

	@Override
	public String getIncFile() { return this.tuLabel.getIncFile(); }

	// ---------- names of generated 'C' functions ----------

	@Override
	public String getCall() {
		if (labelAccess == null || tuLabel == null) return null;
		
		if (labelAccess.getAccess() == _UNDEFINED_) {
			if (labelAccess.getData() == null) {
				return "/* unspecified label access */";	
			} else {
				return ("/*underspecified access to label" + this.labelAccess.getData().getName()) + "*/";				
			}
		}

		final NumericStatistic stat = statisticValueOrNull(labelAccess);
		final String statString = (stat == null) ? "1" : getNumericStatistic(stat);


		switch (labelAccess.getAccess()) {
		case READ:
			return tuLabel.readCall(statString);
		case WRITE:
			return tuLabel.writeCall(statString);
		default:
			return null;
		}
	}

	// --------------------------------------------------

	private NumericStatistic statisticValueOrNull(final LabelAccess access) {
		if (access == null || access.getStatistic() == null) return null;
		
		return access.getStatistic().getValue();
	}

	private String getNumericStatistic(final NumericStatistic statistic) {
		if (statistic instanceof MinAvgMaxStatistic) {
			String valueString = String.format("%d", Math.ceil(((MinAvgMaxStatistic) statistic).getAvg()));
			return (valueString + " /*MinAvgMaxStatistic not supported yet*/");
		} else if (statistic instanceof SingleValueStatistic) {
			return String.format("%d", Math.ceil(((SingleValueStatistic) statistic).getValue()));
		}
		return null;
	}

}