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/*******************************************************************************
* Copyright (c) 2015, 2019 QNX Software Systems 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.internal.core.build;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.HashMap;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import org.eclipse.cdt.core.CCorePlugin;
import org.eclipse.cdt.core.build.IToolChain;
import org.eclipse.cdt.core.build.IToolChainManager;
import org.eclipse.cdt.core.build.IToolChainProvider;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IConfigurationElement;
import org.eclipse.core.runtime.IExtensionPoint;
import org.eclipse.core.runtime.IExtensionRegistry;
import org.eclipse.core.runtime.ISafeRunnable;
import org.eclipse.core.runtime.Platform;
import org.eclipse.core.runtime.SafeRunner;
import org.eclipse.core.runtime.preferences.InstanceScope;
import org.osgi.service.prefs.BackingStoreException;
import org.osgi.service.prefs.Preferences;
public class ToolChainManager implements IToolChainManager {
private Map<String, IConfigurationElement> providerElements;
private Map<String, IToolChainProvider> providers;
private Map<String, Map<String, IToolChain>> toolChains;
private Map<String, String> toolChainTypeNames = new HashMap<>();
private List<IToolChain> orderedToolChains;
private List<ISafeRunnable> listeners = new ArrayList<>();
private synchronized void init() {
if (providerElements == null) {
providerElements = new HashMap<>();
providers = new HashMap<>();
// Load the types
IExtensionRegistry registry = Platform.getExtensionRegistry();
IExtensionPoint typesPoint = registry.getExtensionPoint(CCorePlugin.PLUGIN_ID + ".toolChainProvider"); //$NON-NLS-1$
for (IConfigurationElement element : typesPoint.getConfigurationElements()) {
String id = element.getAttribute("id"); //$NON-NLS-1$
providerElements.put(id, element);
}
// Load the discovered toolchains
toolChains = new HashMap<>();
for (IConfigurationElement element : providerElements.values()) {
switch (element.getName()) {
case "provider": //$NON-NLS-1$
// TODO check for enablement
SafeRunner.run(() -> {
IToolChainProvider provider = (IToolChainProvider) element.createExecutableExtension("class"); //$NON-NLS-1$
providers.put(element.getAttribute("id"), provider); //$NON-NLS-1$
provider.init(ToolChainManager.this);
});
break;
case "type": //$NON-NLS-1$
toolChainTypeNames.put(element.getAttribute("id"), element.getAttribute("name")); //$NON-NLS-1$ //$NON-NLS-2$
break;
}
}
orderedToolChains = new ArrayList<>();
Preferences prefs = InstanceScope.INSTANCE.getNode(CCorePlugin.PLUGIN_ID).node(getClass().getSimpleName())
.node("order"); //$NON-NLS-1$
String nString = prefs.get("n", ""); //$NON-NLS-1$ //$NON-NLS-2$
if (!nString.isEmpty()) {
try {
int n = Integer.parseInt(nString);
for (int i = 0; i < n; ++i) {
String typeId = prefs.get(Integer.toString(i) + ".type", ""); //$NON-NLS-1$ //$NON-NLS-2$
String id = prefs.get(Integer.toString(i) + ".id", ""); //$NON-NLS-1$ //$NON-NLS-2$
IToolChain toolChain = getToolChain(typeId, id);
if (toolChain != null) {
orderedToolChains.add(toolChain);
}
}
} catch (NumberFormatException e) {
CCorePlugin.log(e);
} catch (CoreException e) {
CCorePlugin.log(e.getStatus());
}
}
for (Map<String, IToolChain> type : toolChains.values()) {
for (IToolChain toolChain : type.values()) {
if (!orderedToolChains.contains(toolChain)) {
orderedToolChains.add(toolChain);
}
}
}
}
}
@Override
public String getToolChainTypeName(String typeId) {
init();
String name = toolChainTypeNames.get(typeId);
return name != null ? name : typeId;
}
private void saveToolChainOrder() {
Preferences prefs = InstanceScope.INSTANCE.getNode(CCorePlugin.PLUGIN_ID).node(getClass().getSimpleName())
.node("order"); //$NON-NLS-1$
prefs.put("n", Integer.toString(orderedToolChains.size())); //$NON-NLS-1$
int i = 0;
for (IToolChain toolChain : orderedToolChains.toArray(new IToolChain[0])) {
prefs.put(Integer.toString(i) + ".type", toolChain.getTypeId()); //$NON-NLS-1$
prefs.put(Integer.toString(i) + ".id", toolChain.getId()); //$NON-NLS-1$
i++;
}
try {
prefs.flush();
} catch (BackingStoreException e) {
CCorePlugin.log(e);
}
}
@Override
public void addToolChain(IToolChain toolChain) {
Map<String, IToolChain> type = toolChains.get(toolChain.getTypeId());
if (type == null) {
type = new LinkedHashMap<>(); // use LinkedHashMap so input order is maintained
toolChains.put(toolChain.getTypeId(), type);
}
type.put(toolChain.getId(), toolChain);
if (orderedToolChains != null) {
// is null at init time where order will be established later
orderedToolChains.add(toolChain);
saveToolChainOrder();
}
fireChange();
}
@Override
public void removeToolChain(IToolChain toolChain) {
Map<String, IToolChain> type = toolChains.get(toolChain.getTypeId());
if (type != null) {
type.remove(toolChain.getId());
}
if (orderedToolChains.remove(toolChain)) {
saveToolChainOrder();
}
fireChange();
}
@Override
public IToolChainProvider getProvider(String providerId) throws CoreException {
init();
IToolChainProvider provider = providers.get(providerId);
if (provider == null) {
IConfigurationElement element = providerElements.get(providerId);
if (element != null) {
SafeRunner.run(() -> {
IToolChainProvider provider2 = (IToolChainProvider) element.createExecutableExtension("class"); //$NON-NLS-1$
providers.put(providerId, provider2);
provider2.init(ToolChainManager.this);
});
return providers.get(providerId);
}
}
return provider;
}
@Override
public IToolChain getToolChain(String typeId, String id) throws CoreException {
init();
Map<String, IToolChain> type = toolChains.get(typeId);
return type != null ? type.get(id) : null;
}
@Override
public Collection<IToolChain> getToolChainsMatching(Map<String, String> properties) {
init();
List<IToolChain> tcs = new ArrayList<>();
if (orderedToolChains != null) {
for (IToolChain toolChain : orderedToolChains.toArray(new IToolChain[0])) {
if (toolChain.matches(properties)) {
tcs.add(toolChain);
}
}
}
return tcs;
}
@Override
public Collection<IToolChain> getAllToolChains() throws CoreException {
init();
return Collections.unmodifiableCollection(orderedToolChains);
}
@Override
public void setToolChainOrder(List<IToolChain> orderedToolchains) throws CoreException {
this.orderedToolChains = orderedToolchains;
saveToolChainOrder();
}
@Override
public void addToolChainListener(ISafeRunnable listener) {
synchronized (listeners) {
listeners.add(listener);
}
}
@Override
public void removeToolChainListener(ISafeRunnable listener) {
synchronized (listeners) {
listeners.remove(listener);
}
}
private void fireChange() {
List<ISafeRunnable> runners;
synchronized (listeners) {
runners = new ArrayList<>(listeners);
}
for (ISafeRunnable runner : runners) {
SafeRunner.run(runner);
}
}
}
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