Move exception support to its own library

pkg/analyzer/lib/src/generated/java_engine.dart

Index: pkg/analyzer/lib/src/generated/java_engine.dart
diff --git a/pkg/analyzer/lib/src/generated/java_engine.dart b/pkg/analyzer/lib/src/generated/java_engine.dart
index 0190ddd64877830a70ebf2d4fa1ba52345ea8422..784fcb171a2456486dac7b0922b45a09ea166675 100644
--- a/pkg/analyzer/lib/src/generated/java_engine.dart
+++ b/pkg/analyzer/lib/src/generated/java_engine.dart
@@ -7,107 +7,13 @@ library analyzer.src.generated.java_engine;
 import 'package:analyzer/src/generated/interner.dart';
 import 'package:analyzer/src/generated/java_core.dart';
 
+export 'package:analyzer/exception/exception.dart';
+
 /**
  * A predicate is a one-argument function that returns a boolean value.
  */
 typedef bool Predicate<E>(E argument);
 
-/**
- * Instances of the class `AnalysisException` represent an exception that
- * occurred during the analysis of one or more sources.
- */
-class AnalysisException implements Exception {
-  /**
-   * The message that explains why the exception occurred.
-   */
-  final String message;
-
-  /**
-   * The exception that caused this exception, or `null` if this exception was
-   * not caused by another exception.
-   */
-  final CaughtException cause;
-
-  /**
-   * Initialize a newly created exception to have the given [message] and
-   * [cause].
-   */
-  AnalysisException([this.message = 'Exception', this.cause = null]);
-
-  String toString() {
-    StringBuffer buffer = new StringBuffer();
-    buffer.write("AnalysisException: ");
-    buffer.writeln(message);
-    if (cause != null) {
-      buffer.write('Caused by ');
-      cause._writeOn(buffer);
-    }
-    return buffer.toString();
-  }
-}
-
-/**
- * Instances of the class `CaughtException` represent an exception that was
- * caught and has an associated stack trace.
- */
-class CaughtException implements Exception {
-  /**
-   * The exception that was caught.
-   */
-  final Object exception;
-
-  /**
-   * The stack trace associated with the exception.
-   */
-  StackTrace stackTrace;
-
-  /**
-   * Initialize a newly created caught exception to have the given [exception]
-   * and [stackTrace].
-   */
-  CaughtException(this.exception, stackTrace) {
-    if (stackTrace == null) {
-      try {
-        throw this;
-      } catch (_, st) {
-        stackTrace = st;
-      }
-    }
-    this.stackTrace = stackTrace;
-  }
-
-  @override
-  String toString() {
-    StringBuffer buffer = new StringBuffer();
-    _writeOn(buffer);
-    return buffer.toString();
-  }
-
-  /**
-   * Write a textual representation of the caught exception and its associated
-   * stack trace.
-   */
-  void _writeOn(StringBuffer buffer) {
-    if (exception is AnalysisException) {
-      AnalysisException analysisException = exception;
-      buffer.writeln(analysisException.message);
-      if (stackTrace != null) {
-        buffer.writeln(stackTrace.toString());
-      }
-      CaughtException cause = analysisException.cause;
-      if (cause != null) {
-        buffer.write('Caused by ');
-        cause._writeOn(buffer);
-      }
-    } else {
-      buffer.writeln(exception.toString());
-      if (stackTrace != null) {
-        buffer.writeln(stackTrace.toString());
-      }
-    }
-  }
-}
-
 class FileNameUtilities {
   static String getExtension(String fileName) {
     if (fileName == null) {