[issue 699] [issue 682] [issue 683] lots of fixes for eclipse/ecj based issues surrounding path finding.

3 files changed, 160 insertions, 132 deletions

diff --git a/src/core/lombok/core/configuration/FileSystemSourceCache.java b/src/core/lombok/core/configuration/FileSystemSourceCache.java
index 12516557..c59c397c 100644
--- a/src/core/lombok/core/configuration/FileSystemSourceCache.java
+++ b/src/core/lombok/core/configuration/FileSystemSourceCache.java
@@ -24,7 +24,6 @@ package lombok.core.configuration;
 import java.io.ByteArrayOutputStream;
 import java.io.File;
 import java.io.FileInputStream;
-import java.io.InputStream;
 import java.net.URI;
 import java.util.Collections;
 import java.util.Iterator;
@@ -35,64 +34,40 @@ import java.util.concurrent.TimeUnit;
 
 import lombok.ConfigurationKeys;
 import lombok.core.configuration.ConfigurationSource.Result;
-import lombok.eclipse.handlers.EclipseHandlerUtil;
-
-import org.eclipse.core.resources.IFile;
-import org.eclipse.core.resources.ResourcesPlugin;
+import lombok.core.debug.ProblemReporter;
 
 public class FileSystemSourceCache {
 	private static String LOMBOK_CONFIG_FILENAME = "lombok.config";
 	private static final long RECHECK_FILESYSTEM = TimeUnit.SECONDS.toMillis(2);
-	private static final long MISSING = -1; 
+	private static final long NEVER_CHECKED = -1;
+	private static final long MISSING = -88; // Magic value; any lombok.config with this exact epochmillis last modified will never be read, so, let's ensure nobody accidentally has one with that exact last modified stamp.
 	
 	private final ConcurrentMap<File, Content> cache = new ConcurrentHashMap<File, Content>();
 	
 	public Iterable<ConfigurationSource> sourcesForJavaFile(URI javaFile, ConfigurationProblemReporter reporter) {
 		if (javaFile == null) return Collections.emptyList();
 		URI uri = javaFile.normalize();
-		if (!uri.isAbsolute()) {
-			uri = new File(".").toURI().resolve(uri);
-			reporter.report(javaFile.toString(), "Somehow ended up with a relative path. This is a bug that the lombok authors cannot reproduce, so please help us out! Is this path: \"" + uri.toString() + "\" the correct absolute path for resource \"" + javaFile + "\"? If yes, or no, please report back to: https://code.google.com/p/projectlombok/issues/detail?id=683 and let us know. Thanks!", 0, "");
-		}
+		if (!uri.isAbsolute()) uri = URI.create("file:" + uri.toString());
+		
+		File file;
 		try {
-			return sourcesForDirectory(new File(uri).getParentFile(), reporter);
-		} catch (Exception e) {
-			// possibly eclipse knows how to open this thing. Let's try!
-			int filesOpenedWithEclipse = 0;
-			String specialEclipseMessage = null;
-			try {
-				IFile[] files = ResourcesPlugin.getWorkspace().getRoot().findFilesForLocationURI(uri);
-				if (files == null) specialEclipseMessage = ".findFilesForLocationURI returned 'null'";
-				for (IFile file : files) {
-					InputStream in = file.getContents(true);
-					if (in != null) {
-						filesOpenedWithEclipse++;
-						in.close();
-					}
-				}
-				if (filesOpenedWithEclipse == 0) specialEclipseMessage = ".findFilesForLocationURI did work and returned " + files.length + " entries, but none of those resulted in readable contents.";
-			} catch (Throwable t) {
-				// That's unfortunate.
-			}
-			
-			StringBuilder sb = new StringBuilder();
-			sb.append("Lombok is trying to find the directory on disk where source file \"").append(javaFile.toString());
-			sb.append("\" is located. We're trying to turn this URL into a file: \"").append(uri.toString());
-			sb.append("\" but that isn't working. Please help us out by going to ");
-			sb.append("https://code.google.com/p/projectlombok/issues/detail?id=683 and reporting this error. Thanks!\n\n");
-			sb.append("Exception thrown: ").append(e.getClass().getName()).append("\nException msg: ").append(e.getMessage());
-			if (specialEclipseMessage == null && filesOpenedWithEclipse > 0) {
-				sb.append("\n\n Alternate strategy to read this resource via eclipse DID WORK however!! files read: " + filesOpenedWithEclipse);
-			} else if (specialEclipseMessage != null) {
-				sb.append("\n\n Alternate strategy to read this resource via eclipse produced a noteworthy result: ").append(specialEclipseMessage).append(" files read: ").append(filesOpenedWithEclipse);
-			}
+			file = new File(uri);
+			if (!file.exists()) throw new IllegalArgumentException("File does not exist: " + uri);
+			return sourcesForDirectory(file.getParentFile(), reporter);
+		} catch (IllegalArgumentException e) {
+			// This means that the file as passed is not actually a file at all, and some exotic path system is involved.
+			// examples: sourcecontrol://jazz stuff, or an actual relative path (uri.isAbsolute() is completely different, that checks presence of schema!),
+			// or it's eclipse trying to parse a snippet, which has "/Foo.java" as uri.
+			// At some point it might be worth investigating abstracting away the notion of "I can read lombok.config if present in
+			// current context, and I can give you may parent context", using ResourcesPlugin.getWorkspace().getRoot().findFilesForLocationURI(javaFile) as basis.
 			
-			reporter.report(javaFile.toString(), sb.toString(), 0, "");
-			try {
-				EclipseHandlerUtil.warning(sb.toString(), null);
-			} catch (Throwable ignore) {}
-			return Collections.emptyList();
+			// For now, we just carry on as if there is no lombok.config. (intentional fallthrough)
+		} catch (Exception e) {
+			// Especially for eclipse's sake, exceptions here make eclipse borderline unusable, so let's play nice.
+			ProblemReporter.error("Can't find absolute path of file being compiled: " + javaFile, e);
 		}
+		
+		return Collections.emptyList();
 	}
 	
 	public Iterable<ConfigurationSource> sourcesForDirectory(URI directory, ConfigurationProblemReporter reporter) {
@@ -147,18 +122,18 @@ public class FileSystemSourceCache {
 	}
 	
 	ConfigurationSource getSourceForDirectory(File directory, ConfigurationProblemReporter reporter) {
-		if (!directory.exists() && !directory.isDirectory()) throw new IllegalArgumentException("Not a directory: " + directory);
+		if (!directory.exists() || !directory.isDirectory()) throw new IllegalArgumentException("Not a directory: " + directory);
 		long now = System.currentTimeMillis();
 		File configFile = new File(directory, LOMBOK_CONFIG_FILENAME);
 		
 		Content content = ensureContent(directory);
 		synchronized (content) {
-			if (content.lastChecked != MISSING && now - content.lastChecked < RECHECK_FILESYSTEM && getLastModified(configFile) == content.lastModified) {
+			if (content.lastChecked != NEVER_CHECKED && now - content.lastChecked < RECHECK_FILESYSTEM && getLastModifiedOrMissing(configFile) == content.lastModified) {
 				return content.source;
 			}
 			content.lastChecked = now;
 			long previouslyModified = content.lastModified;
-			content.lastModified = getLastModified(configFile);
+			content.lastModified = getLastModifiedOrMissing(configFile);
 			if (content.lastModified != previouslyModified) content.source = content.lastModified == MISSING ? null : parse(configFile, reporter);
 			return content.source;
 		}
@@ -205,7 +180,7 @@ public class FileSystemSourceCache {
 		}
 	}
 	
-	private static final long getLastModified(File file) {
+	private static final long getLastModifiedOrMissing(File file) {
 		if (!file.exists() || !file.isFile()) return MISSING;
 		return file.lastModified();
 	}
@@ -222,7 +197,7 @@ public class FileSystemSourceCache {
 		}
 		
 		static Content empty() {
-			return new Content(null, MISSING, MISSING);
+			return new Content(null, MISSING, NEVER_CHECKED);
 		}
 	}
 }
\ No newline at end of file
diff --git a/src/core/lombok/core/debug/ProblemReporter.java b/src/core/lombok/core/debug/ProblemReporter.java
new file mode 100644
index 00000000..489bdfea
--- /dev/null
+++ b/src/core/lombok/core/debug/ProblemReporter.java
@@ -0,0 +1,127 @@
+/*
+ * Copyright (C) 2014 The Project Lombok Authors.
+ * 
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ * 
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+package lombok.core.debug;
+
+import java.util.concurrent.TimeUnit;
+import java.util.concurrent.atomic.AtomicInteger;
+
+import org.eclipse.core.runtime.ILog;
+import org.eclipse.core.runtime.IStatus;
+import org.eclipse.core.runtime.Platform;
+import org.eclipse.core.runtime.Status;
+import org.osgi.framework.Bundle;
+
+public class ProblemReporter {
+	public static void warning(String msg, Throwable ex) {
+		init();
+		try {
+			logger.warning(msg, ex);
+		} catch (Throwable t) {
+			logger = new TerminalLogger();
+			logger.warning(msg, ex);
+		}
+	}
+	
+	public static void error(String msg, Throwable ex) {
+		init();
+		try {
+			logger.error(msg, ex);
+		} catch (Throwable t) {
+			logger = new TerminalLogger();
+			logger.error(msg, ex);
+		}
+	}
+	
+	private static void init() {
+		if (logger != null) return;
+		try {
+			logger = new EclipseWorkspaceLogger();
+		} catch (Throwable t) {
+			logger = new TerminalLogger();
+		}
+	}
+	
+	private static ErrorLogger logger;
+	
+	private interface ErrorLogger {
+		void error(String message, Throwable ex);
+		void warning(String message, Throwable ex);
+	}
+	
+	private static class TerminalLogger implements ErrorLogger {
+		@Override
+		public void error(String message, Throwable ex) {
+			System.err.println(message);
+			if (ex != null) ex.printStackTrace();
+		}
+		
+		@Override
+		public void warning(String message, Throwable ex) {
+			System.err.println(message);
+			if (ex != null) ex.printStackTrace();
+		}
+	}
+	
+	private static class EclipseWorkspaceLogger implements ErrorLogger {
+		private static final String DEFAULT_BUNDLE_NAME = "org.eclipse.jdt.core";
+		private static final Bundle bundle;
+		private static final int MAX_LOG = 200;
+		private static final long SQUELCH_TIMEOUT = TimeUnit.HOURS.toMillis(1);
+		private static final AtomicInteger counter = new AtomicInteger();
+		private static volatile long squelchTimeout = 0L;
+		
+		
+		static {
+			bundle = Platform.getBundle(DEFAULT_BUNDLE_NAME);
+			if (bundle == null) throw new NoClassDefFoundError(); // this means some weird RCP build or possible ecj. At any rate, we can't report this way so act as if this isn't an eclipse.
+		}
+		
+		@Override
+		public void error(String message, Throwable error) {
+			msg(IStatus.ERROR, message, error);
+		}
+		
+		@Override
+		public void warning(String message, Throwable error) {
+			msg(IStatus.WARNING, message, error);
+		}
+		
+		private void msg(int msgType, String message, Throwable error) {
+			int ct = squelchTimeout != 0L ? 0 : counter.incrementAndGet();
+			boolean printSquelchWarning = false;
+			if (squelchTimeout != 0L) {
+				long now = System.currentTimeMillis();
+				if (squelchTimeout > now) return;
+				squelchTimeout = now + SQUELCH_TIMEOUT;
+				printSquelchWarning = true;
+			} else if (ct >= MAX_LOG) {
+				squelchTimeout = System.currentTimeMillis() + SQUELCH_TIMEOUT;
+				printSquelchWarning = true;
+			}
+			ILog log = Platform.getLog(bundle);
+			log.log(new Status(msgType, DEFAULT_BUNDLE_NAME, message, error));
+			if (printSquelchWarning) {
+				log.log(new Status(IStatus.WARNING, DEFAULT_BUNDLE_NAME, "Lombok has logged too many messages; to avoid memory issues, further lombok logs will be squelched for a while. Restart eclipse to start over."));
+			}
+		}
+	}
+}
diff --git a/src/core/lombok/eclipse/handlers/EclipseHandlerUtil.java b/src/core/lombok/eclipse/handlers/EclipseHandlerUtil.java
index 546beb9f..8326e1d0 100644
--- a/src/core/lombok/eclipse/handlers/EclipseHandlerUtil.java
+++ b/src/core/lombok/eclipse/handlers/EclipseHandlerUtil.java
@@ -46,16 +46,13 @@ import lombok.core.AnnotationValues;
 import lombok.core.AnnotationValues.AnnotationValue;
 import lombok.core.TypeResolver;
 import lombok.core.configuration.NullCheckExceptionType;
+import lombok.core.debug.ProblemReporter;
 import lombok.core.handlers.HandlerUtil;
 import lombok.eclipse.EclipseAST;
 import lombok.eclipse.EclipseNode;
 import lombok.experimental.Accessors;
 import lombok.experimental.Tolerate;
 
-import org.eclipse.core.runtime.ILog;
-import org.eclipse.core.runtime.IStatus;
-import org.eclipse.core.runtime.Platform;
-import org.eclipse.core.runtime.Status;
 import org.eclipse.jdt.internal.compiler.ast.ASTNode;
 import org.eclipse.jdt.internal.compiler.ast.AbstractMethodDeclaration;
 import org.eclipse.jdt.internal.compiler.ast.AbstractVariableDeclaration;
@@ -106,7 +103,6 @@ import org.eclipse.jdt.internal.compiler.lookup.TypeBinding;
 import org.eclipse.jdt.internal.compiler.lookup.TypeConstants;
 import org.eclipse.jdt.internal.compiler.lookup.TypeIds;
 import org.eclipse.jdt.internal.compiler.lookup.WildcardBinding;
-import org.osgi.framework.Bundle;
 
 /**
  * Container for static utility methods useful to handlers written for eclipse.
@@ -116,36 +112,16 @@ public class EclipseHandlerUtil {
 		//Prevent instantiation
 	}
 	
-	private static final String DEFAULT_BUNDLE = "org.eclipse.jdt.core";
-	
-	/**
-	 * Generates an error in the Eclipse error log. Note that most people never look at it!
-	 * 
-	 * @param cud The {@code CompilationUnitDeclaration} where the error occurred.
-	 *     An error will be generated on line 0 linking to the error log entry. Can be {@code null}.
-	 * @param message Human readable description of the problem.
-	 * @param error The associated exception. Can be {@code null}.
-	 */
-	public static void error(CompilationUnitDeclaration cud, String message, Throwable error) {
-		error(cud, message, null, error);
-	}
-	
 	/**
 	 * Generates an error in the Eclipse error log. Note that most people never look at it!
 	 * 
 	 * @param cud The {@code CompilationUnitDeclaration} where the error occurred.
 	 *     An error will be generated on line 0 linking to the error log entry. Can be {@code null}.
 	 * @param message Human readable description of the problem.
-	 * @param bundleName Can be {@code null} to default to {@code org.eclipse.jdt.core} which is usually right.
-	 * @param error The associated exception. Can be {@code null}.
+	 * @param ex The associated exception. Can be {@code null}.
 	 */
-	public static void error(CompilationUnitDeclaration cud, String message, String bundleName, Throwable error) {
-		if (bundleName == null) bundleName = DEFAULT_BUNDLE;
-		try {
-			new EclipseWorkspaceLogger().error(message, bundleName, error);
-		} catch (NoClassDefFoundError e) {  //standalone ecj does not java Platform, ILog, IStatus, and friends.
-			new TerminalLogger().error(message, bundleName, error);
-		}
+	public static void error(CompilationUnitDeclaration cud, String message, Throwable ex) {
+		ProblemReporter.error(message, ex);
 		if (cud != null) EclipseAST.addProblemToCompilationResult(cud.getFileName(), cud.compilationResult, false, message + " - See error log.", 0, 0);
 	}
 	
@@ -153,60 +129,10 @@ public class EclipseHandlerUtil {
 	 * Generates a warning in the Eclipse error log. Note that most people never look at it!
 	 * 
 	 * @param message Human readable description of the problem.
-	 * @param error The associated exception. Can be {@code null}.
-	 */
-	public static void warning(String message, Throwable error) {
-		warning(message, null, error);
-	}
-	
-	/**
-	 * Generates a warning in the Eclipse error log. Note that most people never look at it!
-	 * 
-	 * @param message Human readable description of the problem.
-	 * @param bundleName Can be {@code null} to default to {@code org.eclipse.jdt.core} which is usually right.
-	 * @param error The associated exception. Can be {@code null}.
+	 * @param ex The associated exception. Can be {@code null}.
 	 */
-	public static void warning(String message, String bundleName, Throwable error) {
-		if (bundleName == null) bundleName = DEFAULT_BUNDLE;
-		try {
-			new EclipseWorkspaceLogger().warning(message, bundleName, error);
-		} catch (NoClassDefFoundError e) {  //standalone ecj does not jave Platform, ILog, IStatus, and friends.
-			new TerminalLogger().warning(message, bundleName, error);
-		}
-	}
-	
-	private static class TerminalLogger {
-		void error(String message, String bundleName, Throwable error) {
-			System.err.println(message);
-			if (error != null) error.printStackTrace();
-		}
-		
-		void warning(String message, String bundleName, Throwable error) {
-			System.err.println(message);
-			if (error != null) error.printStackTrace();
-		}
-	}
-	
-	private static class EclipseWorkspaceLogger {
-		void error(String message, String bundleName, Throwable error) {
-			msg(IStatus.ERROR, message, bundleName, error);
-		}
-		
-		void warning(String message, String bundleName, Throwable error) {
-			msg(IStatus.WARNING, message, bundleName, error);
-		}
-		
-		private void msg(int msgType, String message, String bundleName, Throwable error) {
-			Bundle bundle = Platform.getBundle(bundleName);
-			if (bundle == null) {
-				System.err.printf("Can't find bundle %s while trying to report error:\n%s\n%s\n", bundleName, message, error);
-				return;
-			}
-			
-			ILog log = Platform.getLog(bundle);
-			
-			log.log(new Status(msgType, bundleName, message, error));
-		}
+	public static void warning(String message, Throwable ex) {
+		ProblemReporter.warning(message, ex);
 	}
 	
 	public static ASTNode getGeneratedBy(ASTNode node) {