Fixed bug with omitted keys/values in a flow map

src/exp.h

@@ -37,7 +37,7 @@ namespace YAML
 		const RegEx Key = RegEx('?'),
 		            KeyInFlow = RegEx('?') + BlankOrBreak;
 		const RegEx Value = RegEx(':') + (BlankOrBreak || RegEx()),
-		            ValueInFlow = RegEx(':') + BlankOrBreak;
+		            ValueInFlow = RegEx(':') + (BlankOrBreak || RegEx(",}", REGEX_OR));
 		const RegEx Comment = RegEx('#');
 		const RegEx AnchorEnd = RegEx("?:,]}%@`", REGEX_OR) || BlankOrBreak;
 
@@ -49,7 +49,7 @@ namespace YAML
 		const RegEx PlainScalar = !(BlankOrBreak || RegEx(",[]{}#&*!|>\'\"%@`", REGEX_OR) || (RegEx("-?:", REGEX_OR) + Blank)),
 		            PlainScalarInFlow = !(BlankOrBreak || RegEx("?,[]{}#&*!|>\'\"%@`", REGEX_OR) || (RegEx("-:", REGEX_OR) + Blank));
 		const RegEx EndScalar = RegEx(':') + (BlankOrBreak || RegEx()),
-		            EndScalarInFlow = (RegEx(':') + BlankOrBreak) || RegEx(",?[]{}", REGEX_OR);
+		            EndScalarInFlow = (RegEx(':') + (BlankOrBreak || RegEx(",]}", REGEX_OR))) || RegEx(",?[]{}", REGEX_OR);
 
 		const RegEx EscSingleQuote = RegEx("\'\'");
 		const RegEx EscBreak = RegEx('\\') + Break;

src/scantoken.cpp

@@ -181,6 +181,12 @@ namespace YAML
 					throw ParserException(INPUT.mark(), ErrorMsg::MAP_VALUE);
 
 				PushIndentTo(INPUT.column(), IndentMarker::MAP);
+			} else {
+				// we might have an empty key, so we should add it (as a simple key)
+				if(m_simpleKeyAllowed) {
+					InsertSimpleKey();
+					VerifySimpleKey();
+				}
 			}
 
 			// can only put a simple key here if we're in block context

yaml-reader/parsertests.cpp

@@ -220,6 +220,42 @@ namespace Test
 			return true;
 		}
 
+		bool FlowMapWithOmittedKey()
+		{
+			std::string input = "{: omitted key}";
+			std::stringstream stream(input);
+			YAML::Parser parser(stream);
+			YAML::Node doc;
+			parser.GetNextDocument(doc);
+			
+			std::string output;
+			doc[YAML::Null] >> output;
+			if(output != "omitted key")
+				return false;
+			
+			return true;
+		}
+
+		bool FlowMapWithOmittedValue()
+		{
+			std::string input = "{a: b, c:, d:}";
+			std::stringstream stream(input);
+			YAML::Parser parser(stream);
+			YAML::Node doc;
+			parser.GetNextDocument(doc);
+
+			std::string output;
+			doc["a"] >> output;
+			if(output != "b")
+				return false;
+			if(!IsNull(doc["c"]))
+				return false;
+			if(!IsNull(doc["d"]))
+				return false;
+
+			return true;
+		}
+
 		bool QuotedSimpleKeys()
 		{
 			std::string KeyValue[3] = { "\"double\": double\n", "'single': single\n", "plain: plain\n" };

yaml-reader/tests.cpp

@@ -262,6 +262,8 @@ namespace Test
 		RunParserTest(&Parser::SimpleMap, "simple map", passed);
 		RunParserTest(&Parser::FlowSeq, "flow seq", passed);
 		RunParserTest(&Parser::FlowMap, "flow map", passed);
+		RunParserTest(&Parser::FlowMapWithOmittedKey, "flow map with omitted key", passed);
+		RunParserTest(&Parser::FlowMapWithOmittedValue, "flow map with omitted value", passed);
 		RunParserTest(&Parser::QuotedSimpleKeys, "quoted simple keys", passed);
 		RunParserTest(&Parser::CompressedMapAndSeq, "compressed map and seq", passed);
 		RunParserTest(&Parser::NullBlockSeqEntry, "null block seq entry", passed);

yaml-reader/tests.h

@@ -33,6 +33,8 @@ namespace Test {
 		bool SimpleMap();
 		bool FlowSeq();
 		bool FlowMap();
+		bool FlowMapWithOmittedKey();
+		bool FlowMapWithOmittedValue();
 		bool QuotedSimpleKeys();
 		bool CompressedMapAndSeq();
 		bool NullBlockSeqEntry();