Esempio n. 1
0
        /// <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 Event ParseFlowSequenceEntry(bool isFirst)
        {
            if (isFirst)
            {
                GetCurrentToken();
                Skip();
            }

            Event 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.YAML_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_KEY_STATE;
                    evt   = new Events.MappingStart(null, null, true, DataStyle.Compact);
                    Skip();
                    return(evt);
                }
                else if (!(GetCurrentToken() is FlowSequenceEnd))
                {
                    states.Push(ParserState.YAML_PARSE_FLOW_SEQUENCE_ENTRY_STATE);
                    return(ParseNode(false, false));
                }
            }

            state = states.Pop();
            evt   = new Events.SequenceEnd(GetCurrentToken().Start, GetCurrentToken().End);
            Skip();
            return(evt);
        }
Esempio n. 2
0
        /// <summary>
        /// Parse the productions:
        /// block_sequence ::= BLOCK-SEQUENCE-START (BLOCK-ENTRY block_node?)* BLOCK-END
        ///                    ********************  *********** *             *********
        /// </summary>
        private Event 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.YAML_PARSE_BLOCK_SEQUENCE_ENTRY_STATE);
                    return(ParseNode(true, false));
                }
                else
                {
                    state = ParserState.YAML_PARSE_BLOCK_SEQUENCE_ENTRY_STATE;
                    return(ProcessEmptyScalar(mark));
                }
            }

            else if (GetCurrentToken() is BlockEnd)
            {
                state = states.Pop();
                Event 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.");
            }
        }