/*
* Copyright (c) 2012 Sam Harwell, Tunnel Vision Laboratories LLC
* All rights reserved.
*
* The source code of this document is proprietary work, and is not licensed for
* distribution. For information about licensing, contact Sam Harwell at:
* sam@tunnelvisionlabs.com
*/
package org.antlr.works.editor.st4.navigation;
import java.util.Collection;
import java.util.Collections;
import java.util.EnumSet;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.Future;
import org.antlr.netbeans.editor.navigation.Description;
import org.antlr.netbeans.editor.text.DocumentSnapshot;
import org.antlr.netbeans.editor.text.VersionedDocument;
import org.antlr.netbeans.parsing.spi.BaseParserData;
import org.antlr.netbeans.parsing.spi.DocumentParserTaskProvider;
import org.antlr.netbeans.parsing.spi.ParseContext;
import org.antlr.netbeans.parsing.spi.ParserData;
import org.antlr.netbeans.parsing.spi.ParserDataDefinition;
import org.antlr.netbeans.parsing.spi.ParserDataOptions;
import org.antlr.netbeans.parsing.spi.ParserResultHandler;
import org.antlr.netbeans.parsing.spi.ParserTask;
import org.antlr.netbeans.parsing.spi.ParserTaskDefinition;
import org.antlr.netbeans.parsing.spi.ParserTaskManager;
import org.antlr.netbeans.parsing.spi.ParserTaskProvider;
import org.antlr.netbeans.parsing.spi.ParserTaskScheduler;
import org.antlr.works.editor.st4.StringTemplateEditorKit;
import org.antlr.works.editor.st4.TemplateParserDataDefinitions;
import org.antlr.works.editor.st4.parser.CompiledModel;
import org.netbeans.api.editor.mimelookup.MimeRegistration;
/**
*
* @author Sam Harwell
*/
public final class TemplateScanningParserTask implements ParserTask {
private final TemplateScanner templateScanner = new TemplateScanner();
private final Object lock = new Object();
private TemplateScanningParserTask() {
}
@Override
public ParserTaskDefinition getDefinition() {
return Definition.INSTANCE;
}
@Override
public void parse(ParserTaskManager taskManager, ParseContext context, DocumentSnapshot snapshot, Collection<? extends ParserDataDefinition<?>> requestedData, ParserResultHandler results)
throws InterruptedException, ExecutionException {
boolean explicitRequest = ParserTaskScheduler.MANUAL_TASK_SCHEDULER.isAssignableFrom(context.getSchedulerClass());
if (requestedData.contains(TemplateParserDataDefinitions.NAVIGATOR_ROOT)) {
synchronized (lock) {
ParserData<Description> data = taskManager.getData(snapshot, TemplateParserDataDefinitions.NAVIGATOR_ROOT, EnumSet.of(ParserDataOptions.NO_UPDATE, ParserDataOptions.SYNCHRONOUS)).get();
if (data != null) {
results.addResult(data);
return;
}
EnumSet<ParserDataOptions> options;
if (explicitRequest) {
options = EnumSet.of(ParserDataOptions.SYNCHRONOUS);
} else {
options = EnumSet.of(ParserDataOptions.NO_UPDATE, ParserDataOptions.SYNCHRONOUS);
}
Future<ParserData<CompiledModel>> futureData = taskManager.getData(snapshot, context.getComponent(), TemplateParserDataDefinitions.COMPILED_MODEL, options);
ParserData<CompiledModel> parserData = futureData != null ? futureData.get() : null;
if (parserData == null && !explicitRequest) {
return;
}
CompiledModel model = parserData != null ? parserData.getData() : null;
if (model != null) {
TemplateScanner scanner = getScanner(model);
Description description = scanner.scan(model);
if (description != null) {
data = new BaseParserData<>(context, TemplateParserDataDefinitions.NAVIGATOR_ROOT, snapshot, description);
results.addResult(data);
}
}
}
}
}
private TemplateScanner getScanner(CompiledModel model) {
return templateScanner;
}
private static final class Definition extends ParserTaskDefinition {
private static final Collection<ParserDataDefinition<?>> INPUTS =
Collections.<ParserDataDefinition<?>>singletonList(TemplateParserDataDefinitions.COMPILED_MODEL);
private static final Collection<ParserDataDefinition<?>> OUTPUTS =
Collections.<ParserDataDefinition<?>>singletonList(TemplateParserDataDefinitions.NAVIGATOR_ROOT);
public static final Definition INSTANCE = new Definition();
public Definition() {
super("StringTemplate Template Scanner", INPUTS, OUTPUTS, ParserTaskScheduler.INPUT_SENSITIVE_TASK_SCHEDULER);
}
}
@MimeRegistration(mimeType=StringTemplateEditorKit.TEMPLATE_MIME_TYPE, service=ParserTaskProvider.class)
public static final class Provider extends DocumentParserTaskProvider {
@Override
public ParserTaskDefinition getDefinition() {
return Definition.INSTANCE;
}
@Override
public ParserTask createTaskImpl(VersionedDocument document) {
return new TemplateScanningParserTask();
}
}
}