Bindings: Add ScalarValueString support

LayoutTests/fast/js/webidl-type-mapping.html

Index: LayoutTests/fast/js/webidl-type-mapping.html
diff --git a/LayoutTests/fast/js/webidl-type-mapping.html b/LayoutTests/fast/js/webidl-type-mapping.html
index 5c3ab30204d137e8713481eee01baed5afd75efa..653a159fa9c69966357274155794add9e1f39fba 100644
--- a/LayoutTests/fast/js/webidl-type-mapping.html
+++ b/LayoutTests/fast/js/webidl-type-mapping.html
@@ -591,4 +591,25 @@ shouldBeEqualToString("converter.testByteString", "!@#123ABCabc\x00\x80\xFF\r\n\
     shouldBeEqualToString("converter.testByteString", value);
 });
 
+evalAndLog("converter.testScalarValueString = '!@#123ABCabc\\x00\\x80\\xFF\\r\\n\\t'");
+shouldBeEqualToString("converter.testScalarValueString", "!@#123ABCabc\x00\x80\xFF\r\n\t");
+evalAndLog("converter.testScalarValueString = '\\u0100'");
+shouldBeEqualToString("converter.testScalarValueString", "\u0100");
+shouldThrow("converter.testScalarValueString = {toString: function() { throw Error(); }}");
+shouldBeEqualToString("converter.testScalarValueString", "\u0100");
+[{input: "\uD800", expected: "\uFFFD"},
+ {input: "\uDC00", expected: "\uFFFD"},
+ {input: "\uD800\u0000", expected: "\uFFFD\u0000"},
+ {input: "\uDC00\u0000", expected: "\uFFFD\u0000"},
+ {input: "\uDC00\uD800", expected: "\uFFFD\uFFFD"},
+ {input: "\uD834\uDD1E", expected: "\uD834\uDD1E"},
+].forEach(function(test) {
+    evalAndLog("converter.testScalarValueString = " + JSON.stringify(test.input));
+    shouldBeEqualToString("converter.testScalarValueString", test.expected);
+});
+["true", "123", "null", "undefined"].forEach(function(value) {
+    evalAndLog("converter.testScalarValueString = " + value);
+    shouldBeEqualToString("converter.testScalarValueString", value);
+});
+
 </script>