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/*******************************************************************************
* Copyright (c) 2019 Kichwa Coders and others.
*
* 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.cdt.debug.dap;
import java.io.InputStream;
import java.io.OutputStream;
import java.math.BigInteger;
import java.util.Map;
import java.util.concurrent.CompletableFuture;
import java.util.concurrent.ExecutorService;
import java.util.function.UnaryOperator;
import org.eclipse.cdt.debug.dap.CDTDebugProtocol.MemoryContents;
import org.eclipse.cdt.debug.dap.CDTDebugProtocol.MemoryRequestArguments;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Status;
import org.eclipse.debug.core.DebugException;
import org.eclipse.debug.core.ILaunch;
import org.eclipse.debug.core.model.IMemoryBlock;
import org.eclipse.debug.core.model.IMemoryBlockExtension;
import org.eclipse.debug.core.model.IMemoryBlockRetrievalExtension;
import org.eclipse.lsp4e.debug.debugmodel.DSPDebugTarget;
import org.eclipse.lsp4j.debug.services.IDebugProtocolServer;
import org.eclipse.lsp4j.jsonrpc.Launcher;
import org.eclipse.lsp4j.jsonrpc.MessageConsumer;
import org.eclipse.lsp4j.jsonrpc.debug.DebugLauncher;
public class DapDebugTarget extends DSPDebugTarget implements IMemoryBlockRetrievalExtension, ICDTDebugProtocolClient {
public DapDebugTarget(ILaunch launch, Runnable processCleanup, InputStream in, OutputStream out,
Map<String, Object> dspParameters) {
super(launch, processCleanup, in, out, dspParameters);
}
@Override
protected Launcher<? extends IDebugProtocolServer> createLauncher(UnaryOperator<MessageConsumer> wrapper,
InputStream in, OutputStream out, ExecutorService threadPool) {
Launcher<ICDTDebugProtocolServer> debugProtocolLauncher = DebugLauncher.createLauncher(this,
ICDTDebugProtocolServer.class, in, out, threadPool, wrapper);
return debugProtocolLauncher;
}
@Override
public ICDTDebugProtocolServer getDebugProtocolServer() {
return (ICDTDebugProtocolServer) super.getDebugProtocolServer();
}
@Override
public boolean supportsStorageRetrieval() {
return true;
}
@Override
public IMemoryBlock getMemoryBlock(long startAddress, long length) throws DebugException {
throw new DebugException(new Status(IStatus.ERROR, Activator.PLUGIN_ID, DebugException.NOT_SUPPORTED,
"getMemoryBlock() not supported, use getExtendedMemoryBlock()", null)); //$NON-NLS-1$
}
@Override
public IMemoryBlockExtension getExtendedMemoryBlock(String expression, Object context) throws DebugException {
BigInteger bigBaseAddress;
/*
* See if the expression is a simple numeric value; if it is, we can
* avoid some costly processing (calling the back-end to resolve the
* expression and obtain an address)
*/
try {
// Now, try to parse the expression. If a NumberFormatException is
// thrown, then it wasn't a simple numerical expression and we give
// up as debug adapter hasn't provided us what was needed
bigBaseAddress = BigInteger.valueOf(Long.decode(expression));
} catch (NumberFormatException nfexc) {
MemoryRequestArguments memoryRequestArguments = new MemoryRequestArguments();
memoryRequestArguments.setAddress(expression);
memoryRequestArguments.setLength(1L);
CompletableFuture<MemoryContents> memory = getDebugProtocolServer().memory(memoryRequestArguments);
MemoryContents body = complete(memory);
String address = body.getAddress();
try {
bigBaseAddress = BigInteger.valueOf(Long.decode(address));
} catch (NumberFormatException e) {
// still no resolvable address
return null;
}
}
return new MemoryBlock(this, expression, bigBaseAddress, context);
}
}
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