[fixes #3709] Improve extraction of javadoc comments

src/core/lombok/eclipse/handlers/EclipseHandlerUtil.java

@@ -38,6 +38,8 @@ import java.util.Collections;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
 
 import org.eclipse.jdt.core.compiler.CharOperation;
 import org.eclipse.jdt.internal.compiler.ast.ASTNode;
@@ -2797,6 +2799,9 @@ public class EclipseHandlerUtil {
 		return annotations;
 	}
 	
+	private static final Pattern JAVADOC_PATTERN = Pattern.compile("^\\s*\\/\\*\\*((?:\\S|\\s)*?)\\*\\/", Pattern.MULTILINE);
+	private static final Pattern LEADING_ASTERISKS_PATTERN = Pattern.compile("(?m)^\\s*\\* ?");
+
 	public static String getDocComment(EclipseNode eclipseNode) {
 		if (eclipseNode.getAst().getSource() == null) return null;
 		
@@ -2816,11 +2821,11 @@ public class EclipseHandlerUtil {
 		if (start != -1 && end != -1) {
 			char[] rawContent = CharOperation.subarray(eclipseNode.getAst().getSource(), start, end);
 			String rawContentString = new String(rawContent);
-			int startIndex = rawContentString.indexOf("/**");
-			int endIndex = rawContentString.indexOf("*/");
-			if (startIndex != -1 && endIndex != -1) {
+			Matcher javadocMatcher = JAVADOC_PATTERN.matcher(rawContentString);
+			if (javadocMatcher.find()) {
+				String javadoc = javadocMatcher.group(1);
 				/* Remove all leading asterisks */
-				return rawContentString.substring(startIndex + 3, endIndex).replaceAll("(?m)^\\s*\\* ?", "").trim();
+				return LEADING_ASTERISKS_PATTERN.matcher(javadoc).replaceAll("").trim();
 			}
 		}
 		return null;

test/transform/resource/after-delombok/WeirdJavadoc.java

@@ -0,0 +1,72 @@
+public class WeirdJavadoc {
+	// Comment
+	/* Weird comment /** */
+	/* Weird comment /** */
+	/**
+	 * This is the real comment
+	 * @param test Copy this
+	 */
+	WeirdJavadoc(String test) {
+	}
+	// Comment
+	/* Weird comment /** */
+	/* Weird comment /** */
+	/**
+	 * This is the real comment
+	 */
+	private String test;
+	@java.lang.SuppressWarnings("all")
+	@lombok.Generated
+	public static class WeirdJavadocBuilder {
+		@java.lang.SuppressWarnings("all")
+		@lombok.Generated
+		private String test;
+		@java.lang.SuppressWarnings("all")
+		@lombok.Generated
+		WeirdJavadocBuilder() {
+		}
+		/**
+		 * @param test Copy this
+		 * @return {@code this}.
+		 */
+		@java.lang.SuppressWarnings("all")
+		@lombok.Generated
+		public WeirdJavadoc.WeirdJavadocBuilder test(final String test) {
+			this.test = test;
+			return this;
+		}
+		@java.lang.SuppressWarnings("all")
+		@lombok.Generated
+		public WeirdJavadoc build() {
+			return new WeirdJavadoc(this.test);
+		}
+		@java.lang.Override
+		@java.lang.SuppressWarnings("all")
+		@lombok.Generated
+		public java.lang.String toString() {
+			return "WeirdJavadoc.WeirdJavadocBuilder(test=" + this.test + ")";
+		}
+	}
+	@java.lang.SuppressWarnings("all")
+	@lombok.Generated
+	public static WeirdJavadoc.WeirdJavadocBuilder builder() {
+		return new WeirdJavadoc.WeirdJavadocBuilder();
+	}
+	/**
+	 * This is the real comment
+	 */
+	@java.lang.SuppressWarnings("all")
+	@lombok.Generated
+	public String getTest() {
+		return this.test;
+	}
+	/**
+	 * This is the real comment
+	 * @param test Copy this
+	 */
+	@java.lang.SuppressWarnings("all")
+	@lombok.Generated
+	public void setTest(final String test) {
+		this.test = test;
+	}
+}

test/transform/resource/after-ecj/WeirdJavadoc.java

@@ -0,0 +1,45 @@
+import lombok.Builder;
+import lombok.Getter;
+import lombok.Setter;
+public class WeirdJavadoc {
+  public static @java.lang.SuppressWarnings("all") @lombok.Generated class WeirdJavadocBuilder {
+    private @java.lang.SuppressWarnings("all") @lombok.Generated String test;
+    @java.lang.SuppressWarnings("all") @lombok.Generated WeirdJavadocBuilder() {
+      super();
+    }
+    /**
+     * @param test Copy this
+     * @return {@code this}.
+     */
+    public @java.lang.SuppressWarnings("all") @lombok.Generated WeirdJavadoc.WeirdJavadocBuilder test(final String test) {
+      this.test = test;
+      return this;
+    }
+    public @java.lang.SuppressWarnings("all") @lombok.Generated WeirdJavadoc build() {
+      return new WeirdJavadoc(this.test);
+    }
+    public @java.lang.Override @java.lang.SuppressWarnings("all") @lombok.Generated java.lang.String toString() {
+      return (("WeirdJavadoc.WeirdJavadocBuilder(test=" + this.test) + ")");
+    }
+  }
+  private @Getter @Setter String test;
+  @Builder WeirdJavadoc(String test) {
+    super();
+  }
+  public static @java.lang.SuppressWarnings("all") @lombok.Generated WeirdJavadoc.WeirdJavadocBuilder builder() {
+    return new WeirdJavadoc.WeirdJavadocBuilder();
+  }
+  /**
+   * This is the real comment
+   */
+  public @java.lang.SuppressWarnings("all") @lombok.Generated String getTest() {
+    return this.test;
+  }
+  /**
+   * This is the real comment
+   * @param test Copy this
+   */
+  public @java.lang.SuppressWarnings("all") @lombok.Generated void setTest(final String test) {
+    this.test = test;
+  }
+}

test/transform/resource/before/WeirdJavadoc.java

@@ -0,0 +1,28 @@
+import lombok.Builder;
+import lombok.Getter;
+import lombok.Setter;
+
+public class WeirdJavadoc {
+	// Comment
+	/* Weird comment /** */
+	/**
+	 * This is the real comment
+	 * @param test Copy this
+	 */
+	/* Weird comment /** */
+	@Builder
+	WeirdJavadoc(String test) {
+		
+	}
+	
+	// Comment
+	/* Weird comment /** */
+	/**
+	 * This is the real comment
+	 * @param test Copy this
+	 */
+	/* Weird comment /** */
+	@Getter
+	@Setter
+	private String test;
+}