/*******************************************************************************
* Copyright (c) 2015 Ericsson
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*******************************************************************************/
package org.eclipse.tracecompass.internal.ctf.core.event.metadata.tsdl.enumeration;
import java.util.List;
import org.antlr.runtime.tree.CommonTree;
import org.eclipse.jdt.annotation.NonNullByDefault;
import org.eclipse.tracecompass.ctf.core.event.types.EnumDeclaration;
import org.eclipse.tracecompass.internal.ctf.core.event.metadata.ICommonTreeParser;
import org.eclipse.tracecompass.internal.ctf.core.event.metadata.ParseException;
/**
* Body parser for an enumeration, this parses the list of elements in an enum
*
* @author Matthew Khouzam
*
*/
public final class EnumBodyParser implements ICommonTreeParser {
/**
* Enum declaration parameter object
*
* @author Matthew Khouzam
*
*/
@NonNullByDefault
public static final class Param implements ICommonTreeParserParameter {
private final EnumDeclaration fEnumDeclaration;
/**
* Constructor
*
* @param enumDeclaration
* the enumeration
*/
public Param(EnumDeclaration enumDeclaration) {
fEnumDeclaration = enumDeclaration;
}
}
/**
* The instance
*/
public static final EnumBodyParser INSTANCE = new EnumBodyParser();
private EnumBodyParser() {
}
@Override
public EnumDeclaration parse(CommonTree tree, ICommonTreeParserParameter param) throws ParseException {
if (!(param instanceof Param)) {
throw new IllegalArgumentException("Param must be a " + Param.class.getCanonicalName()); //$NON-NLS-1$
}
Param parameter = (Param) param;
EnumDeclaration enumDeclaration = parameter.fEnumDeclaration;
List<CommonTree> enumerators = tree.getChildren();
/*
* Start at -1, so that if the first enumrator has no explicit value, it
* will choose 0
*/
for (CommonTree enumerator : enumerators) {
EnumeratorParser.INSTANCE.parse(enumerator, new EnumeratorParser.Param(enumDeclaration));
}
return enumDeclaration;
}
}