--- /dev/null
+/*
+ * Copyright 2000-2010 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.intellij.compiler.impl.newApi;
+
+import com.intellij.util.io.DataExternalizer;
+
+import java.io.DataInput;
+import java.io.DataOutput;
+import java.io.IOException;
+
+/**
+ * @author nik
+ */
+public class DummyPersistentState {
+ public static final DummyPersistentState INSTANCE = new DummyPersistentState();
+ public static final DataExternalizer<DummyPersistentState> EXTERNALIZER = new DummyPersistentStateExternalizer();
+
+ private DummyPersistentState() {
+ }
+
+ private static class DummyPersistentStateExternalizer implements DataExternalizer<DummyPersistentState> {
+ @Override
+ public void save(DataOutput out, DummyPersistentState value) throws IOException {
+ }
+
+ @Override
+ public DummyPersistentState read(DataInput in) throws IOException {
+ return INSTANCE;
+ }
+ }
+}
--- /dev/null
+/*
+ * Copyright 2000-2010 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.intellij.compiler.impl.newApi;
+
+import com.intellij.openapi.vfs.VirtualFile;
+import com.intellij.openapi.vfs.VirtualFileManager;
+import com.intellij.util.io.DataExternalizer;
+import com.intellij.util.io.IOUtil;
+import org.jetbrains.annotations.NotNull;
+
+import java.io.DataInput;
+import java.io.DataOutput;
+import java.io.IOException;
+import java.util.HashMap;
+import java.util.Map;
+
+/**
+ * @author nik
+ */
+public class VirtualFileWithDependenciesState {
+ public static final DataExternalizer<VirtualFileWithDependenciesState> EXTERNALIZER = new VirtualFileWithDependenciesExternalizer();
+ private long mySourceTimestamp;
+ private Map<String, Long> myDependencies = new HashMap<String, Long>();
+
+ public VirtualFileWithDependenciesState(long sourceTimestamp) {
+ mySourceTimestamp = sourceTimestamp;
+ }
+
+ public void addDependency(@NotNull VirtualFile file) {
+ myDependencies.put(file.getUrl(), file.getTimeStamp());
+ }
+
+ public boolean isUpToDate(@NotNull VirtualFile sourceFile) {
+ if (sourceFile.getTimeStamp() != mySourceTimestamp) {
+ return false;
+ }
+
+ VirtualFileManager manager = VirtualFileManager.getInstance();
+ for (Map.Entry<String, Long> entry : myDependencies.entrySet()) {
+ final VirtualFile file = manager.findFileByUrl(entry.getKey());
+ if (file == null || file.getTimeStamp() != entry.getValue()) {
+ return false;
+ }
+ }
+ return true;
+ }
+
+
+ private static class VirtualFileWithDependenciesExternalizer implements DataExternalizer<VirtualFileWithDependenciesState> {
+ private byte[] myBuffer = IOUtil.allocReadWriteUTFBuffer();
+
+ @Override
+ public void save(DataOutput out, VirtualFileWithDependenciesState value) throws IOException {
+ out.writeLong(value.mySourceTimestamp);
+ final Map<String, Long> dependencies = value.myDependencies;
+ out.writeInt(dependencies.size());
+ for (Map.Entry<String, Long> entry : dependencies.entrySet()) {
+ IOUtil.writeUTFFast(myBuffer, out, entry.getKey());
+ out.writeLong(entry.getValue());
+ }
+ }
+
+ @Override
+ public VirtualFileWithDependenciesState read(DataInput in) throws IOException {
+ final VirtualFileWithDependenciesState state = new VirtualFileWithDependenciesState(in.readLong());
+ int size = in.readInt();
+ while (size-- > 0) {
+ final String url = IOUtil.readUTFFast(myBuffer, in);
+ final long timestamp = in.readLong();
+ state.myDependencies.put(url, timestamp);
+ }
+ return state;
+ }
+ }
+}