/// <summary>
/// Parse the productions:
/// flow_mapping ::= FLOW-MAPPING-START
/// ******************
/// (flow_mapping_entry FLOW-ENTRY)*
/// * **********
/// flow_mapping_entry?
/// ******************
/// FLOW-MAPPING-END
/// ****************
/// flow_mapping_entry ::= flow_node | KEY flow_node? (VALUE flow_node?)?
/// * *** *
/// </summary>
private ParsingEvent ParseFlowMappingKey(bool isFirst)
{
if (isFirst)
{
GetCurrentToken();
Skip();
}
if (!(GetCurrentToken() is FlowMappingEnd))
{
if (!isFirst)
{
if (GetCurrentToken() is FlowEntry)
{
Skip();
}
else
{
var current = GetCurrentToken();
throw new SemanticErrorException(current.Start, current.End, "While parsing a flow mapping, did not find expected ',' or '}'.");
}
}
if (GetCurrentToken() is Key)
{
Skip();
if (!(GetCurrentToken() is Value || GetCurrentToken() is FlowEntry || GetCurrentToken() is FlowMappingEnd))
{
states.Push(ParserState.FlowMappingValue);
return(ParseNode(false, false));
}
else
{
state = ParserState.FlowMappingValue;
return(ProcessEmptyScalar(GetCurrentToken().Start));
}
}
else if (!(GetCurrentToken() is FlowMappingEnd))
{
states.Push(ParserState.FlowMappingEmptyValue);
return(ParseNode(false, false));
}
}
state = states.Pop();
ParsingEvent evt = new Events.MappingEnd(GetCurrentToken().Start, GetCurrentToken().End);
Skip();
return(evt);
}
/// <summary>
/// Parse the productions:
/// block_mapping ::= BLOCK-MAPPING_START
/// *******************
/// ((KEY block_node_or_indentless_sequence?)?
/// *** *
/// (VALUE block_node_or_indentless_sequence?)?)*
///
/// BLOCK-END
/// *********
/// </summary>
private ParsingEvent ParseBlockMappingKey(bool isFirst)
{
if (isFirst)
{
GetCurrentToken();
Skip();
}
if (GetCurrentToken() is Key)
{
Mark mark = GetCurrentToken().End;
Skip();
if (!(GetCurrentToken() is Key || GetCurrentToken() is Value || GetCurrentToken() is BlockEnd))
{
states.Push(ParserState.BlockMappingValue);
return(ParseNode(true, true));
}
else
{
state = ParserState.BlockMappingValue;
return(ProcessEmptyScalar(mark));
}
}
else if (GetCurrentToken() is BlockEnd)
{
state = states.Pop();
ParsingEvent evt = new Events.MappingEnd(GetCurrentToken().Start, GetCurrentToken().End);
Skip();
return(evt);
}
else
{
var current = GetCurrentToken();
throw new SemanticErrorException(current.Start, current.End, "While parsing a block mapping, did not find expected key.");
}
}