| /******************************************************************************* |
| * Copyright (c) 2015 Ericsson |
| * |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License 2.0 |
| * which accompanies this distribution, and is available at |
| * https://www.eclipse.org/legal/epl-2.0/ |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| *******************************************************************************/ |
| package org.eclipse.tracecompass.internal.ctf.core.event.metadata.tsdl.variant; |
| |
| import static org.eclipse.tracecompass.internal.ctf.core.event.metadata.tsdl.TsdlUtils.childTypeError; |
| |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Map.Entry; |
| |
| import org.antlr.runtime.tree.CommonTree; |
| import org.eclipse.jdt.annotation.NonNullByDefault; |
| import org.eclipse.jdt.annotation.Nullable; |
| import org.eclipse.tracecompass.ctf.core.event.metadata.DeclarationScope; |
| import org.eclipse.tracecompass.ctf.core.event.types.IDeclaration; |
| import org.eclipse.tracecompass.ctf.core.event.types.VariantDeclaration; |
| import org.eclipse.tracecompass.ctf.core.trace.CTFTrace; |
| import org.eclipse.tracecompass.ctf.parser.CTFParser; |
| import org.eclipse.tracecompass.internal.ctf.core.event.metadata.AbstractScopedCommonTreeParser; |
| import org.eclipse.tracecompass.internal.ctf.core.event.metadata.MetadataStrings; |
| import org.eclipse.tracecompass.internal.ctf.core.event.metadata.ParseException; |
| import org.eclipse.tracecompass.internal.ctf.core.event.metadata.tsdl.TypeAliasParser; |
| import org.eclipse.tracecompass.internal.ctf.core.event.metadata.tsdl.TypedefParser; |
| |
| /** |
| * Variant body parser. This handles all the inside of a variant, so it handles |
| * everything between the '{' and '}' of a TSDL variant declaration. |
| * |
| * @author Matthew Khouzam |
| * |
| */ |
| public final class VariantBodyParser extends AbstractScopedCommonTreeParser { |
| |
| /** |
| * Parameter object |
| * |
| * @author Matthew Khouzam |
| * |
| */ |
| @NonNullByDefault |
| public static final class Param implements ICommonTreeParserParameter { |
| private final DeclarationScope fDeclarationScope; |
| private final @Nullable String fName; |
| private final VariantDeclaration fVariantDeclaration; |
| private final CTFTrace fTrace; |
| |
| /** |
| * Constructor |
| * |
| * @param variantDeclaration |
| * the declaration to populate |
| * @param trace |
| * the trace |
| * @param name |
| * the variant name |
| * @param scope |
| * the current scope |
| */ |
| public Param(VariantDeclaration variantDeclaration, CTFTrace trace, @Nullable String name, DeclarationScope scope) { |
| fVariantDeclaration = variantDeclaration; |
| fTrace = trace; |
| fDeclarationScope = scope; |
| fName = name; |
| } |
| } |
| |
| /** |
| * The instance |
| */ |
| public static final VariantBodyParser INSTANCE = new VariantBodyParser(); |
| |
| private VariantBodyParser() { |
| } |
| |
| /** |
| * Parse the variant body, fills the variant with the results. |
| * |
| * @param variantBody |
| * the variant body AST node |
| * @param param |
| * the {@link Param} parameter object |
| * @return a populated {@link VariantDeclaration} |
| * @throws ParseException |
| * if the AST is malformed |
| */ |
| @Override |
| public VariantDeclaration parse(CommonTree variantBody, ICommonTreeParserParameter param) throws ParseException { |
| if (!(param instanceof Param)) { |
| throw new IllegalArgumentException("Param must be a " + Param.class.getCanonicalName()); //$NON-NLS-1$ |
| } |
| |
| String variantName = ((Param) param).fName; |
| VariantDeclaration variantDeclaration = ((Param) param).fVariantDeclaration; |
| List<CommonTree> variantDeclarations = variantBody.getChildren(); |
| |
| final DeclarationScope scope = new DeclarationScope(((Param) param).fDeclarationScope, variantName == null ? MetadataStrings.VARIANT : variantName); |
| CTFTrace trace = ((Param) param).fTrace; |
| for (CommonTree declarationNode : variantDeclarations) { |
| switch (declarationNode.getType()) { |
| case CTFParser.TYPEALIAS: |
| TypeAliasParser.INSTANCE.parse(declarationNode, new TypeAliasParser.Param(trace, scope)); |
| break; |
| case CTFParser.TYPEDEF: |
| Map<String, IDeclaration> decs = TypedefParser.INSTANCE.parse(declarationNode, new TypedefParser.Param(trace, scope)); |
| for (Entry<String, IDeclaration> declarationEntry : decs.entrySet()) { |
| variantDeclaration.addField(declarationEntry.getKey(), declarationEntry.getValue()); |
| } |
| break; |
| case CTFParser.SV_DECLARATION: |
| VariantDeclarationParser.INSTANCE.parse(declarationNode, new VariantDeclarationParser.Param(variantDeclaration, trace, scope)); |
| break; |
| default: |
| throw childTypeError(declarationNode); |
| } |
| } |
| |
| return variantDeclaration; |
| } |
| |
| } |