Encode URIs stored in unlinked summaries to make them Uri.parse() safe.

pkg/analyzer/lib/src/summary/public_namespace_computer.dart

Index: pkg/analyzer/lib/src/summary/public_namespace_computer.dart
diff --git a/pkg/analyzer/lib/src/summary/public_namespace_computer.dart b/pkg/analyzer/lib/src/summary/public_namespace_computer.dart
index 203043a1b9528b1f147f23169e124e1851c96334..119169e979cbf652944434dd5c002588ded41aef 100644
--- a/pkg/analyzer/lib/src/summary/public_namespace_computer.dart
+++ b/pkg/analyzer/lib/src/summary/public_namespace_computer.dart
@@ -147,8 +147,9 @@ class _PublicNamespaceVisitor extends RecursiveAstVisitor {
 
   @override
   visitExportDirective(ExportDirective node) {
+    String uriStr = Uri.encodeFull(node.uri.stringValue ?? '');

[Brian Wilkerson, 2017/02/01 17:28:24]

Consider a getter (such as 'encodedUri') on UriBasedDirective.

     exports.add(new UnlinkedExportPublicBuilder(
-        uri: node.uri.stringValue,
+        uri: uriStr,
         combinators: node.combinators
             .map((Combinator c) => c.accept(new _CombinatorEncoder()))
             .toList(),
@@ -178,7 +179,8 @@ class _PublicNamespaceVisitor extends RecursiveAstVisitor {
 
   @override
   visitPartDirective(PartDirective node) {
-    parts.add(node.uri.stringValue ?? '');
+    String uriStr = Uri.encodeFull(node.uri.stringValue ?? '');
+    parts.add(uriStr);
   }
 
   @override