Update almost all tests (except co19) to use the new try-catch syntax.

tests/standalone/io/file_test.dart

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 //
 // Dart test program for testing file I/O.
 
 #import("dart:io");
 #import("dart:isolate");
 
 class MyListOfOneElement implements List {
@@ skipping 741 matching lines @@
 
   // Tests exception handling after file was closed.
   static void testCloseException() {
     bool exceptionCaught = false;
     bool wrongExceptionCaught = false;
     File input = new File(tempDirectory.path.concat("/out_close_exception"));
     RandomAccessFile openedFile = input.openSync(FileMode.WRITE);
     openedFile.closeSync();
     try {
       openedFile.readByteSync();
-    } catch (FileIOException ex) {
+    } on FileIOException catch (ex) {
       exceptionCaught = true;
-    } catch (Exception ex) {
+    } on Exception catch (ex) {
       wrongExceptionCaught = true;
     }
     Expect.equals(true, exceptionCaught);
     Expect.equals(true, !wrongExceptionCaught);
     exceptionCaught = false;
     try {
       openedFile.writeByteSync(1);
-    } catch (FileIOException ex) {
+    } on FileIOException catch (ex) {
       exceptionCaught = true;
-    } catch (Exception ex) {
+    } on Exception catch (ex) {
       wrongExceptionCaught = true;
     }
     Expect.equals(true, exceptionCaught);
     Expect.equals(true, !wrongExceptionCaught);
     exceptionCaught = false;
     try {
       openedFile.writeStringSync("Test");
-    } catch (FileIOException ex) {
+    } on FileIOException catch (ex) {
       exceptionCaught = true;
-    } catch (Exception ex) {
+    } on Exception catch (ex) {
       wrongExceptionCaught = true;
     }
     Expect.equals(true, exceptionCaught);
     Expect.equals(true, !wrongExceptionCaught);
     exceptionCaught = false;
     try {
       List<int> buffer = new List<int>(100);
       openedFile.readListSync(buffer, 0, 10);
-    } catch (FileIOException ex) {
+    } on FileIOException catch (ex) {
       exceptionCaught = true;
-    } catch (Exception ex) {
+    } on Exception catch (ex) {
       wrongExceptionCaught = true;
     }
     Expect.equals(true, exceptionCaught);
     Expect.equals(true, !wrongExceptionCaught);
     exceptionCaught = false;
     try {
       List<int> buffer = new List<int>(100);
       openedFile.writeListSync(buffer, 0, 10);
-    } catch (FileIOException ex) {
+    } on FileIOException catch (ex) {
       exceptionCaught = true;
-    } catch (Exception ex) {
+    } on Exception catch (ex) {
       wrongExceptionCaught = true;
     }
     Expect.equals(true, exceptionCaught);
     Expect.equals(true, !wrongExceptionCaught);
     exceptionCaught = false;
     try {
       openedFile.positionSync();
-    } catch (FileIOException ex) {
+    } on FileIOException catch (ex) {
       exceptionCaught = true;
-    } catch (Exception ex) {
+    } on Exception catch (ex) {
       wrongExceptionCaught = true;
     }
     Expect.equals(true, exceptionCaught);
     Expect.equals(true, !wrongExceptionCaught);
     exceptionCaught = false;
     try {
       openedFile.lengthSync();
-    } catch (FileIOException ex) {
+    } on FileIOException catch (ex) {
       exceptionCaught = true;
-    } catch (Exception ex) {
+    } on Exception catch (ex) {
       wrongExceptionCaught = true;
     }
     Expect.equals(true, exceptionCaught);
     Expect.equals(true, !wrongExceptionCaught);
     exceptionCaught = false;
     try {
       openedFile.flushSync();
-    } catch (FileIOException ex) {
+    } on FileIOException catch (ex) {
       exceptionCaught = true;
-    } catch (Exception ex) {
+    } on Exception catch (ex) {
       wrongExceptionCaught = true;
     }
     Expect.equals(true, exceptionCaught);
     Expect.equals(true, !wrongExceptionCaught);
     input.deleteSync();
   }
 
   // Tests stream exception handling after file was closed.
   static void testCloseExceptionStream() {
     asyncTestStarted();
@@ skipping 18 matching lines @@
   // Tests buffer out of bounds exception.
   static void testBufferOutOfBoundsException() {
     bool exceptionCaught = false;
     bool wrongExceptionCaught = false;
     File file =
         new File(tempDirectory.path.concat("/out_buffer_out_of_bounds"));
     RandomAccessFile openedFile = file.openSync(FileMode.WRITE);
     try {
       List<int> buffer = new List<int>(10);
       openedFile.readListSync(buffer, 0, 12);
-    } catch (IndexOutOfRangeException ex) {
+    } on IndexOutOfRangeException catch (ex) {
       exceptionCaught = true;
-    } catch (Exception ex) {
+    } on Exception catch (ex) {
       wrongExceptionCaught = true;
     }
     Expect.equals(true, exceptionCaught);
     Expect.equals(true, !wrongExceptionCaught);
     exceptionCaught = false;
     try {
       List<int> buffer = new List<int>(10);
       openedFile.readListSync(buffer, 6, 6);
-    } catch (IndexOutOfRangeException ex) {
+    } on IndexOutOfRangeException catch (ex) {
       exceptionCaught = true;
-    } catch (Exception ex) {
+    } on Exception catch (ex) {
       wrongExceptionCaught = true;
     }
     Expect.equals(true, exceptionCaught);
     Expect.equals(true, !wrongExceptionCaught);
     exceptionCaught = false;
     try {
       List<int> buffer = new List<int>(10);
       openedFile.readListSync(buffer, -1, 1);
-    } catch (IndexOutOfRangeException ex) {
+    } on IndexOutOfRangeException catch (ex) {
       exceptionCaught = true;
-    } catch (Exception ex) {
+    } on Exception catch (ex) {
       wrongExceptionCaught = true;
     }
     Expect.equals(true, exceptionCaught);
     Expect.equals(true, !wrongExceptionCaught);
     exceptionCaught = false;
     try {
       List<int> buffer = new List<int>(10);
       openedFile.readListSync(buffer, 0, -1);
-    } catch (IndexOutOfRangeException ex) {
+    } on IndexOutOfRangeException catch (ex) {
       exceptionCaught = true;
-    } catch (Exception ex) {
+    } on Exception catch (ex) {
       wrongExceptionCaught = true;
     }
     Expect.equals(true, exceptionCaught);
     Expect.equals(true, !wrongExceptionCaught);
     exceptionCaught = false;
     try {
       List<int> buffer = new List<int>(10);
       openedFile.writeListSync(buffer, 0, 12);
-    } catch (IndexOutOfRangeException ex) {
+    } on IndexOutOfRangeException catch (ex) {
       exceptionCaught = true;
-    } catch (Exception ex) {
+    } on Exception catch (ex) {
       wrongExceptionCaught = true;
     }
     Expect.equals(true, exceptionCaught);
     Expect.equals(true, !wrongExceptionCaught);
     exceptionCaught = false;
     try {
       List<int> buffer = new List<int>(10);
       openedFile.writeListSync(buffer, 6, 6);
-    } catch (IndexOutOfRangeException ex) {
+    } on IndexOutOfRangeException catch (ex) {
       exceptionCaught = true;
-    } catch (Exception ex) {
+    } on Exception catch (ex) {
       wrongExceptionCaught = true;
     }
     Expect.equals(true, exceptionCaught);
     Expect.equals(true, !wrongExceptionCaught);
     exceptionCaught = false;
     try {
       List<int> buffer = new List<int>(10);
       openedFile.writeListSync(buffer, -1, 1);
-    } catch (IndexOutOfRangeException ex) {
+    } on IndexOutOfRangeException catch (ex) {
       exceptionCaught = true;
-    } catch (Exception ex) {
+    } on Exception catch (ex) {
       wrongExceptionCaught = true;
     }
     Expect.equals(true, exceptionCaught);
     Expect.equals(true, !wrongExceptionCaught);
     exceptionCaught = false;
     try {
       List<int> buffer = new List<int>(10);
       openedFile.writeListSync(buffer, 0, -1);
-    } catch (IndexOutOfRangeException ex) {
+    } on IndexOutOfRangeException catch (ex) {
       exceptionCaught = true;
-    } catch (Exception ex) {
+    } on Exception catch (ex) {
       wrongExceptionCaught = true;
     }
     Expect.equals(true, exceptionCaught);
     Expect.equals(true, !wrongExceptionCaught);
     openedFile.closeSync();
     file.deleteSync();
   }
 
   static void testOpenDirectoryAsFile() {
     var f = new File('.');
     var future = f.open(FileMode.READ);
     future.then((r) => Expect.fail('Directory opened as file'));
     future.handleException((e) => true);
   }
 
   static void testOpenDirectoryAsFileSync() {
     var f = new File('.');
     try {
       f.openSync();
       Expect.fail("Expected exception opening directory as file");
-    } catch (var e) {
+    } catch (e) {
       Expect.isTrue(e is FileIOException);
     }
   }
 
   static void testOpenFileFromPath() {
     var name = getFilename("tests/vm/data/fixed_length_file");
     var path = new Path(name);
     var f = new File.fromPath(path);
     Expect.isTrue(f.existsSync());
     name = f.fullPathSync();
@@ skipping 244 matching lines @@
       testWriteVariousLists();
       testDirectory();
       testDirectorySync();
     });
   }
 }
 
 main() {
   FileTest.testMain();
 }