From 6436f96fd164ebbdf240ff918f6919304e9445ec Mon Sep 17 00:00:00 2001
From: Tobias Bosch <tbosch1009@gmail.com>
Date: Wed, 14 Oct 2015 08:08:28 -0700
Subject: [PATCH] fix(transformers): show nice error message when an invalid
 uri is found

Closes #4731
---
 .../transform/lib/src/transform/common/code/uri.dart        | 2 +-
 .../transform/lib/src/transform/common/url_resolver.dart    | 6 +++---
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/modules_dart/transform/lib/src/transform/common/code/uri.dart b/modules_dart/transform/lib/src/transform/common/code/uri.dart
index 9f7edbd150..4a2d58f4de 100644
--- a/modules_dart/transform/lib/src/transform/common/code/uri.dart
+++ b/modules_dart/transform/lib/src/transform/common/code/uri.dart
@@ -61,7 +61,7 @@ bool _canImportRelative(Uri importUri, {Uri from}) {
 bool _canPackageImport(Uri assetImport) {
   if (assetImport == null) throw new ArgumentError.notNull('assetImport');
   if (!assetImport.isAbsolute || assetImport.scheme != 'asset') {
-    throw new ArgumentError.value(assetImport, 'assetImport',
+    throw new ArgumentError.value(assetImport.toString(), 'assetImport',
         'Must be an absolute uri using the asset: scheme');
   }
   return assetImport.pathSegments.length >= 2 &&
diff --git a/modules_dart/transform/lib/src/transform/common/url_resolver.dart b/modules_dart/transform/lib/src/transform/common/url_resolver.dart
index 2f38188852..56290aadfa 100644
--- a/modules_dart/transform/lib/src/transform/common/url_resolver.dart
+++ b/modules_dart/transform/lib/src/transform/common/url_resolver.dart
@@ -46,7 +46,7 @@ Uri toAssetScheme(Uri absoluteUri) {
 
   if (!absoluteUri.isAbsolute) {
     throw new ArgumentError.value(
-        absoluteUri, 'absoluteUri', 'Value passed must be an absolute uri');
+        absoluteUri.toString(), 'absoluteUri', 'Value passed must be an absolute uri');
   }
   if (absoluteUri.scheme == 'asset') {
     if (absoluteUri.pathSegments.length < 3) {
@@ -54,7 +54,7 @@ Uri toAssetScheme(Uri absoluteUri) {
           'An asset: URI must have at least 3 path '
           'segments, for example '
           'asset:<package-name>/<first-level-dir>/<path-to-dart-file>.',
-          absoluteUri);
+          absoluteUri.toString());
     }
     return absoluteUri;
   }
@@ -68,7 +68,7 @@ Uri toAssetScheme(Uri absoluteUri) {
         'A package: URI must have at least 2 path '
         'segments, for example '
         'package:<package-name>/<path-to-dart-file>',
-        absoluteUri);
+        absoluteUri.toString());
   }
 
   var pathSegments = absoluteUri.pathSegments.toList()..insert(1, 'lib');