Remove parseUriWithException() and URISyntaxException.

pkg/analyzer/lib/src/dart/ast/ast.dart

 // Copyright (c) 2014, 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.
 
 library analyzer.src.dart.ast.ast;
 
 import 'dart:collection';
 
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/ast/token.dart';
@@ skipping 10508 matching lines @@
   @override
   StringLiteral get uri => _uri;
 
   @override
   void set uri(StringLiteral uri) {
     _uri = _becomeParentOf(uri as AstNodeImpl);
   }
 
   @override
   UriValidationCode validate() {
-    StringLiteral uriLiteral = uri;
+    StringLiteral uriLiteral = this.uri;
     if (uriLiteral is StringInterpolation) {
       return UriValidationCode.URI_WITH_INTERPOLATION;
     }
     String uriContent = this.uriContent;
     if (uriContent == null) {
       return UriValidationCode.INVALID_URI;
     }
     if (this is ImportDirective && uriContent.startsWith(_DART_EXT_SCHEME)) {
       return UriValidationCode.URI_WITH_DART_EXT_SCHEME;
     }
+    Uri uri;
     try {
-      parseUriWithException(Uri.encodeFull(uriContent));
-    } on URISyntaxException {
+      uri = Uri.parse(Uri.encodeFull(uriContent));
+    } on FormatException {
+      return UriValidationCode.INVALID_URI;
+    }
+    if (uri.path.isEmpty) {
       return UriValidationCode.INVALID_URI;
     }
     return null;
   }
 
   @override
   void visitChildren(AstVisitor visitor) {
     super.visitChildren(visitor);
     _uri?.accept(visitor);
   }
@@ skipping 490 matching lines @@
 
   @override
   dynamic/*=E*/ accept/*<E>*/(AstVisitor/*<E>*/ visitor) =>
       visitor.visitYieldStatement(this);
 
   @override
   void visitChildren(AstVisitor visitor) {
     _expression?.accept(visitor);
   }
 }