Rewrite double.parse.

runtime/vm/dart_api_impl_test.cc

Index: runtime/vm/dart_api_impl_test.cc
diff --git a/runtime/vm/dart_api_impl_test.cc b/runtime/vm/dart_api_impl_test.cc
index 6d8626a952b19d6bb7bd69a3b0c8e6fafefe147a..c20111fcef28175ec732b37b67c85dd8d0f18ef6 100644
--- a/runtime/vm/dart_api_impl_test.cc
+++ b/runtime/vm/dart_api_impl_test.cc
@@ -7733,4 +7733,62 @@ TEST_CASE(ExternalStringDeoptimize) {
   EXPECT_EQ(260, value);
 }
 
+
+TEST_CASE(ExternalStringTrimDoubleParse) {
+  const char* kScriptChars =
+      "String str = 'A';\n"
+      "class A {\n"
+      "  static change_str(String s) native 'A_change_str';\n"
+      "}\n"
+      "main() {\n"
+      "  var externalOneByteString = ' 0.2\\xA0 ';\n;"
+      "  A.change_str(externalOneByteString);\n"
+      "  var externalTwoByteString = ' \\u{2029}0.6\\u{2029} ';\n"
+      "  A.change_str(externalTwoByteString);\n"
+      "  var x = double.parse(externalOneByteString);\n"
+      "  var y = double.parse(externalTwoByteString);\n"
+      "  return ((x + y) * 10).toInt();\n"
+      "}\n";
+  Dart_Handle lib =
+      TestCase::LoadTestScript(kScriptChars,
+                               &ExternalStringDeoptimize_native_lookup);
+  Dart_Handle result = Dart_Invoke(lib,
+                                   NewString("main"),
+                                   0,
+                                   NULL);
+  int64_t value = 0;
+  result = Dart_IntegerToInt64(result, &value);
+  EXPECT_VALID(result);
+  EXPECT_EQ(8, value);
+}
+
+
+TEST_CASE(ExternalStringDoubleParse) {
+  const char* kScriptChars =
+      "String str = 'A';\n"
+      "class A {\n"
+      "  static change_str(String s) native 'A_change_str';\n"
+      "}\n"
+      "main() {\n"
+      "  var externalOneByteString = '0.2';\n;"
+      "  A.change_str(externalOneByteString);\n"
+      "  var externalTwoByteString = '0.6';\n"
+      "  A.change_str(externalTwoByteString);\n"
+      "  var x = double.parse(externalOneByteString);\n"
+      "  var y = double.parse(externalTwoByteString);\n"
+      "  return ((x + y) * 10).toInt();\n"
+      "}\n";
+  Dart_Handle lib =
+      TestCase::LoadTestScript(kScriptChars,
+                               &ExternalStringDeoptimize_native_lookup);
+  Dart_Handle result = Dart_Invoke(lib,
+                                   NewString("main"),
+                                   0,
+                                   NULL);
+  int64_t value = 0;
+  result = Dart_IntegerToInt64(result, &value);
+  EXPECT_VALID(result);
+  EXPECT_EQ(8, value);
+}
+
 }  // namespace dart