/// <summary> /// Parse the productions: /// flow_sequence ::= FLOW-SEQUENCE-START /// ******************* /// (flow_sequence_entry FLOW-ENTRY)* /// * ********** /// flow_sequence_entry? /// * /// FLOW-SEQUENCE-END /// ***************** /// flow_sequence_entry ::= flow_node | KEY flow_node? (VALUE flow_node?)? /// * /// </summary> private ParsingEvent ParseFlowSequenceEntry(bool isFirst) { if (isFirst) { GetCurrentToken(); Skip(); } ParsingEvent evt; if (!(GetCurrentToken() is FlowSequenceEnd)) { if (!isFirst) { if (GetCurrentToken() is FlowEntry) { Skip(); } else { var current = GetCurrentToken(); throw new SemanticErrorException(current.Start, current.End, "While parsing a flow sequence, did not find expected ',' or ']'."); } } if (GetCurrentToken() is Key) { state = ParserState.FlowSequenceEntryMappingKey; evt = new Events.MappingStart(null, null, true, MappingStyle.Flow); Skip(); return(evt); } else if (!(GetCurrentToken() is FlowSequenceEnd)) { states.Push(ParserState.FlowSequenceEntry); return(ParseNode(false, false)); } } state = states.Pop(); evt = new Events.SequenceEnd(GetCurrentToken().Start, GetCurrentToken().End); Skip(); return(evt); }
/// <summary> /// Parse the productions: /// block_sequence ::= BLOCK-SEQUENCE-START (BLOCK-ENTRY block_node?)* BLOCK-END /// ******************** *********** * ********* /// </summary> private ParsingEvent ParseBlockSequenceEntry(bool isFirst) { if (isFirst) { GetCurrentToken(); Skip(); } if (GetCurrentToken() is BlockEntry) { Mark mark = GetCurrentToken().End; Skip(); if (!(GetCurrentToken() is BlockEntry || GetCurrentToken() is BlockEnd)) { states.Push(ParserState.BlockSequenceEntry); return(ParseNode(true, false)); } else { state = ParserState.BlockSequenceEntry; return(ProcessEmptyScalar(mark)); } } else if (GetCurrentToken() is BlockEnd) { state = states.Pop(); ParsingEvent evt = new Events.SequenceEnd(GetCurrentToken().Start, GetCurrentToken().End); Skip(); return(evt); } else { var current = GetCurrentToken(); throw new SemanticErrorException(current.Start, current.End, "While parsing a block collection, did not find expected '-' indicator."); } }
void IParsingEventVisitor.Visit(SequenceEnd e) { clonedEvent = new SequenceEnd(e.Start, e.End); }