Changeset 10586 in josm for trunk/src/org/openstreetmap/josm/tools

Timestamp:

2016-07-22T22:30:54+02:00 (9 years ago)

Author:

Don-vip

Message:

see #11390, fix #13190 - Allow Lambda bug report parameters (patch by michael2402) - gsoc-core

Location:

trunk/src/org/openstreetmap/josm/tools/bugreport

Files:

• BugReport.java (modified) (2 diffs)
• ReportedException.java (modified) (3 diffs)

trunk/src/org/openstreetmap/josm/tools/bugreport/BugReport.java

@@ -20 +20 @@
  * You should then add some debug information there. This can be the OSM ids that caused the error, information on the data you were working on
  * or other local variables. Make sure that no excpetions may occur while computing the values. It is best to send plain local variables to
- * put(...). Then simply throw the throwable you got from the bug report. The global exception handler will do the rest.
+ * put(...). If you need to do computations, put them into a lambda expression. Then simply throw the throwable you got from the bug report.
+ * The global exception handler will do the rest.
  * <pre>
  * int id = ...;
@@ -27 +28 @@
  *   ... your code ...
  * } catch (RuntimeException t) {
- *   throw BugReport.intercept(t).put("id", id).put("tag", tag);
+ *   throw BugReport.intercept(t).put("id", id).put("tag", () -> x.getTag());
  * }
  * </pre>
  *
  * Instead of re-throwing, you can call {@link ReportedException#warn()}. This will display a warning to the user and allow it to either report
- * the execption or ignore it.
+ * the exception or ignore it.
  *
  * @author Michael Zangl

trunk/src/org/openstreetmap/josm/tools/bugreport/ReportedException.java

@@ -17 +17 @@
 import java.util.NoSuchElementException;
 import java.util.Set;
+import java.util.function.Supplier;
 
 import org.openstreetmap.josm.Main;
@@ -180 +181 @@
 
     /**
-     * Adds some debug values to this exception.
+     * Adds some debug values to this exception. The value is converted to a string. Errors during conversion are handled.
      *
      * @param key
@@ -189 +190 @@
      */
     public ReportedException put(String key, Object value) {
+        return put(key, () -> value);
+    }
+
+    /**
+    * Adds some debug values to this exception. This method automatically catches errors that occur during the production of the value.
+    *
+    * @param key
+    *            The key to add this for. Does not need to be unique but it would be nice.
+    * @param valueSupplier
+    *            A supplier that is called once to get the value.
+    * @return This exception for easy chaining.
+    * @since 10586
+    */
+    public ReportedException put(String key, Supplier<Object> valueSupplier) {
         String string;
         try {
+            Object value = valueSupplier.get();
             if (value == null) {
                 string = "null";