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// |
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// Copyright (c) 2011-2019 Canonical Ltd |
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// Copyright (c) 2006-2010 Kirill Simonov |
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// |
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// Permission is hereby granted, free of charge, to any person obtaining a copy of |
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// this software and associated documentation files (the "Software"), to deal in |
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// the Software without restriction, including without limitation the rights to |
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// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies |
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// of the Software, and to permit persons to whom the Software is furnished to do |
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// so, subject to the following conditions: |
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// |
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// The above copyright notice and this permission notice shall be included in all |
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// copies or substantial portions of the Software. |
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// |
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
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// SOFTWARE. |
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|
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package yaml |
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|
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import ( |
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"bytes" |
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) |
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|
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// The parser implements the following grammar: |
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// |
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// stream ::= STREAM-START implicit_document? explicit_document* STREAM-END |
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// implicit_document ::= block_node DOCUMENT-END* |
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// explicit_document ::= DIRECTIVE* DOCUMENT-START block_node? DOCUMENT-END* |
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// block_node_or_indentless_sequence ::= |
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// ALIAS |
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// | properties (block_content | indentless_block_sequence)? |
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// | block_content |
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// | indentless_block_sequence |
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// block_node ::= ALIAS |
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// | properties block_content? |
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// | block_content |
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// flow_node ::= ALIAS |
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// | properties flow_content? |
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// | flow_content |
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// properties ::= TAG ANCHOR? | ANCHOR TAG? |
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// block_content ::= block_collection | flow_collection | SCALAR |
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// flow_content ::= flow_collection | SCALAR |
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// block_collection ::= block_sequence | block_mapping |
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// flow_collection ::= flow_sequence | flow_mapping |
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// block_sequence ::= BLOCK-SEQUENCE-START (BLOCK-ENTRY block_node?)* BLOCK-END |
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// indentless_sequence ::= (BLOCK-ENTRY block_node?)+ |
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// block_mapping ::= BLOCK-MAPPING_START |
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// ((KEY block_node_or_indentless_sequence?)? |
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// (VALUE block_node_or_indentless_sequence?)?)* |
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// BLOCK-END |
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// flow_sequence ::= FLOW-SEQUENCE-START |
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// (flow_sequence_entry FLOW-ENTRY)* |
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// flow_sequence_entry? |
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// FLOW-SEQUENCE-END |
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// flow_sequence_entry ::= flow_node | KEY flow_node? (VALUE flow_node?)? |
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// flow_mapping ::= FLOW-MAPPING-START |
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// (flow_mapping_entry FLOW-ENTRY)* |
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// flow_mapping_entry? |
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// FLOW-MAPPING-END |
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// flow_mapping_entry ::= flow_node | KEY flow_node? (VALUE flow_node?)? |
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|
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// Peek the next token in the token queue. |
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func peek_token(parser *yaml_parser_t) *yaml_token_t { |
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if parser.token_available || yaml_parser_fetch_more_tokens(parser) { |
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token := &parser.tokens[parser.tokens_head] |
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yaml_parser_unfold_comments(parser, token) |
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return token |
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} |
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return nil |
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} |
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|
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// yaml_parser_unfold_comments walks through the comments queue and joins all |
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// comments behind the position of the provided token into the respective |
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// top-level comment slices in the parser. |
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func yaml_parser_unfold_comments(parser *yaml_parser_t, token *yaml_token_t) { |
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for parser.comments_head < len(parser.comments) && token.start_mark.index >= parser.comments[parser.comments_head].token_mark.index { |
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comment := &parser.comments[parser.comments_head] |
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if len(comment.head) > 0 { |
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if token.typ == yaml_BLOCK_END_TOKEN { |
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// No heads on ends, so keep comment.head for a follow up token. |
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break |
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} |
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if len(parser.head_comment) > 0 { |
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parser.head_comment = append(parser.head_comment, '\n') |
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} |
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parser.head_comment = append(parser.head_comment, comment.head...) |
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} |
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if len(comment.foot) > 0 { |
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if len(parser.foot_comment) > 0 { |
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parser.foot_comment = append(parser.foot_comment, '\n') |
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} |
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parser.foot_comment = append(parser.foot_comment, comment.foot...) |
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} |
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if len(comment.line) > 0 { |
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if len(parser.line_comment) > 0 { |
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parser.line_comment = append(parser.line_comment, '\n') |
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} |
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parser.line_comment = append(parser.line_comment, comment.line...) |
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} |
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*comment = yaml_comment_t{} |
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parser.comments_head++ |
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} |
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} |
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|
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// Remove the next token from the queue (must be called after peek_token). |
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func skip_token(parser *yaml_parser_t) { |
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parser.token_available = false |
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parser.tokens_parsed++ |
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parser.stream_end_produced = parser.tokens[parser.tokens_head].typ == yaml_STREAM_END_TOKEN |
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parser.tokens_head++ |
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} |
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|
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// Get the next event. |
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func yaml_parser_parse(parser *yaml_parser_t, event *yaml_event_t) bool { |
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// Erase the event object. |
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*event = yaml_event_t{} |
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|
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// No events after the end of the stream or error. |
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if parser.stream_end_produced || parser.error != yaml_NO_ERROR || parser.state == yaml_PARSE_END_STATE { |
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return true |
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} |
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|
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// Generate the next event. |
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return yaml_parser_state_machine(parser, event) |
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} |
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|
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// Set parser error. |
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func yaml_parser_set_parser_error(parser *yaml_parser_t, problem string, problem_mark yaml_mark_t) bool { |
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parser.error = yaml_PARSER_ERROR |
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parser.problem = problem |
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parser.problem_mark = problem_mark |
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return false |
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} |
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|
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func yaml_parser_set_parser_error_context(parser *yaml_parser_t, context string, context_mark yaml_mark_t, problem string, problem_mark yaml_mark_t) bool { |
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parser.error = yaml_PARSER_ERROR |
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parser.context = context |
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parser.context_mark = context_mark |
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parser.problem = problem |
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parser.problem_mark = problem_mark |
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return false |
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} |
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|
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// State dispatcher. |
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func yaml_parser_state_machine(parser *yaml_parser_t, event *yaml_event_t) bool { |
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//trace("yaml_parser_state_machine", "state:", parser.state.String()) |
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|
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switch parser.state { |
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case yaml_PARSE_STREAM_START_STATE: |
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return yaml_parser_parse_stream_start(parser, event) |
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|
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case yaml_PARSE_IMPLICIT_DOCUMENT_START_STATE: |
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return yaml_parser_parse_document_start(parser, event, true) |
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|
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case yaml_PARSE_DOCUMENT_START_STATE: |
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return yaml_parser_parse_document_start(parser, event, false) |
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|
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case yaml_PARSE_DOCUMENT_CONTENT_STATE: |
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return yaml_parser_parse_document_content(parser, event) |
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|
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case yaml_PARSE_DOCUMENT_END_STATE: |
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return yaml_parser_parse_document_end(parser, event) |
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|
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case yaml_PARSE_BLOCK_NODE_STATE: |
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return yaml_parser_parse_node(parser, event, true, false) |
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|
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case yaml_PARSE_BLOCK_NODE_OR_INDENTLESS_SEQUENCE_STATE: |
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return yaml_parser_parse_node(parser, event, true, true) |
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|
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case yaml_PARSE_FLOW_NODE_STATE: |
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return yaml_parser_parse_node(parser, event, false, false) |
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|
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case yaml_PARSE_BLOCK_SEQUENCE_FIRST_ENTRY_STATE: |
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return yaml_parser_parse_block_sequence_entry(parser, event, true) |
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|
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case yaml_PARSE_BLOCK_SEQUENCE_ENTRY_STATE: |
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return yaml_parser_parse_block_sequence_entry(parser, event, false) |
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|
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case yaml_PARSE_INDENTLESS_SEQUENCE_ENTRY_STATE: |
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return yaml_parser_parse_indentless_sequence_entry(parser, event) |
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|
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case yaml_PARSE_BLOCK_MAPPING_FIRST_KEY_STATE: |
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return yaml_parser_parse_block_mapping_key(parser, event, true) |
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|
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case yaml_PARSE_BLOCK_MAPPING_KEY_STATE: |
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return yaml_parser_parse_block_mapping_key(parser, event, false) |
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|
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case yaml_PARSE_BLOCK_MAPPING_VALUE_STATE: |
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return yaml_parser_parse_block_mapping_value(parser, event) |
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|
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case yaml_PARSE_FLOW_SEQUENCE_FIRST_ENTRY_STATE: |
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return yaml_parser_parse_flow_sequence_entry(parser, event, true) |
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|
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case yaml_PARSE_FLOW_SEQUENCE_ENTRY_STATE: |
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return yaml_parser_parse_flow_sequence_entry(parser, event, false) |
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|
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case yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_KEY_STATE: |
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return yaml_parser_parse_flow_sequence_entry_mapping_key(parser, event) |
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|
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case yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_VALUE_STATE: |
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return yaml_parser_parse_flow_sequence_entry_mapping_value(parser, event) |
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|
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case yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_END_STATE: |
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return yaml_parser_parse_flow_sequence_entry_mapping_end(parser, event) |
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|
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case yaml_PARSE_FLOW_MAPPING_FIRST_KEY_STATE: |
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return yaml_parser_parse_flow_mapping_key(parser, event, true) |
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|
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case yaml_PARSE_FLOW_MAPPING_KEY_STATE: |
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return yaml_parser_parse_flow_mapping_key(parser, event, false) |
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|
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case yaml_PARSE_FLOW_MAPPING_VALUE_STATE: |
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return yaml_parser_parse_flow_mapping_value(parser, event, false) |
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|
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case yaml_PARSE_FLOW_MAPPING_EMPTY_VALUE_STATE: |
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return yaml_parser_parse_flow_mapping_value(parser, event, true) |
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|
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default: |
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panic("invalid parser state") |
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} |
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} |
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|
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// Parse the production: |
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// stream ::= STREAM-START implicit_document? explicit_document* STREAM-END |
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// ************ |
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func yaml_parser_parse_stream_start(parser *yaml_parser_t, event *yaml_event_t) bool { |
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token := peek_token(parser) |
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if token == nil { |
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return false |
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} |
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if token.typ != yaml_STREAM_START_TOKEN { |
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return yaml_parser_set_parser_error(parser, "did not find expected <stream-start>", token.start_mark) |
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} |
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parser.state = yaml_PARSE_IMPLICIT_DOCUMENT_START_STATE |
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*event = yaml_event_t{ |
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typ: yaml_STREAM_START_EVENT, |
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start_mark: token.start_mark, |
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end_mark: token.end_mark, |
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encoding: token.encoding, |
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} |
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skip_token(parser) |
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return true |
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} |
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|
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// Parse the productions: |
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// implicit_document ::= block_node DOCUMENT-END* |
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// * |
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// explicit_document ::= DIRECTIVE* DOCUMENT-START block_node? DOCUMENT-END* |
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// ************************* |
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func yaml_parser_parse_document_start(parser *yaml_parser_t, event *yaml_event_t, implicit bool) bool { |
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|
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token := peek_token(parser) |
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if token == nil { |
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return false |
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} |
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|
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// Parse extra document end indicators. |
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if !implicit { |
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for token.typ == yaml_DOCUMENT_END_TOKEN { |
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skip_token(parser) |
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token = peek_token(parser) |
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if token == nil { |
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return false |
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} |
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} |
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} |
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|
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if implicit && token.typ != yaml_VERSION_DIRECTIVE_TOKEN && |
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token.typ != yaml_TAG_DIRECTIVE_TOKEN && |
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token.typ != yaml_DOCUMENT_START_TOKEN && |
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token.typ != yaml_STREAM_END_TOKEN { |
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// Parse an implicit document. |
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if !yaml_parser_process_directives(parser, nil, nil) { |
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return false |
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} |
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parser.states = append(parser.states, yaml_PARSE_DOCUMENT_END_STATE) |
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parser.state = yaml_PARSE_BLOCK_NODE_STATE |
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|
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var head_comment []byte |
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if len(parser.head_comment) > 0 { |
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// [Go] Scan the header comment backwards, and if an empty line is found, break |
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// the header so the part before the last empty line goes into the |
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// document header, while the bottom of it goes into a follow up event. |
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for i := len(parser.head_comment) - 1; i > 0; i-- { |
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if parser.head_comment[i] == '\n' { |
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if i == len(parser.head_comment)-1 { |
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head_comment = parser.head_comment[:i] |
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parser.head_comment = parser.head_comment[i+1:] |
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break |
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} else if parser.head_comment[i-1] == '\n' { |
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head_comment = parser.head_comment[:i-1] |
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parser.head_comment = parser.head_comment[i+1:] |
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break |
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} |
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} |
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} |
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} |
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|
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*event = yaml_event_t{ |
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typ: yaml_DOCUMENT_START_EVENT, |
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start_mark: token.start_mark, |
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end_mark: token.end_mark, |
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|
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head_comment: head_comment, |
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} |
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|
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} else if token.typ != yaml_STREAM_END_TOKEN { |
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// Parse an explicit document. |
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var version_directive *yaml_version_directive_t |
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var tag_directives []yaml_tag_directive_t |
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start_mark := token.start_mark |
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if !yaml_parser_process_directives(parser, &version_directive, &tag_directives) { |
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return false |
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} |
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token = peek_token(parser) |
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if token == nil { |
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return false |
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} |
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if token.typ != yaml_DOCUMENT_START_TOKEN { |
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yaml_parser_set_parser_error(parser, |
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"did not find expected <document start>", token.start_mark) |
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return false |
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} |
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parser.states = append(parser.states, yaml_PARSE_DOCUMENT_END_STATE) |
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parser.state = yaml_PARSE_DOCUMENT_CONTENT_STATE |
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end_mark := token.end_mark |
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|
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*event = yaml_event_t{ |
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typ: yaml_DOCUMENT_START_EVENT, |
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start_mark: start_mark, |
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end_mark: end_mark, |
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version_directive: version_directive, |
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tag_directives: tag_directives, |
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implicit: false, |
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} |
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skip_token(parser) |
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|
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} else { |
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// Parse the stream end. |
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parser.state = yaml_PARSE_END_STATE |
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*event = yaml_event_t{ |
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typ: yaml_STREAM_END_EVENT, |
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start_mark: token.start_mark, |
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end_mark: token.end_mark, |
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} |
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skip_token(parser) |
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} |
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|
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return true |
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} |
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|
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// Parse the productions: |
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// explicit_document ::= DIRECTIVE* DOCUMENT-START block_node? DOCUMENT-END* |
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// *********** |
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// |
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func yaml_parser_parse_document_content(parser *yaml_parser_t, event *yaml_event_t) bool { |
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token := peek_token(parser) |
| 363 |
if token == nil { |
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return false |
| 365 |
} |
| 366 |
|
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if token.typ == yaml_VERSION_DIRECTIVE_TOKEN || |
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token.typ == yaml_TAG_DIRECTIVE_TOKEN || |
| 369 |
token.typ == yaml_DOCUMENT_START_TOKEN || |
| 370 |
token.typ == yaml_DOCUMENT_END_TOKEN || |
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token.typ == yaml_STREAM_END_TOKEN { |
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parser.state = parser.states[len(parser.states)-1] |
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parser.states = parser.states[:len(parser.states)-1] |
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return yaml_parser_process_empty_scalar(parser, event, |
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token.start_mark) |
| 376 |
} |
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return yaml_parser_parse_node(parser, event, true, false) |
| 378 |
} |
| 379 |
|
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// Parse the productions: |
| 381 |
// implicit_document ::= block_node DOCUMENT-END* |
| 382 |
// ************* |
| 383 |
// explicit_document ::= DIRECTIVE* DOCUMENT-START block_node? DOCUMENT-END* |
| 384 |
// |
| 385 |
func yaml_parser_parse_document_end(parser *yaml_parser_t, event *yaml_event_t) bool { |
| 386 |
token := peek_token(parser) |
| 387 |
if token == nil { |
| 388 |
return false |
| 389 |
} |
| 390 |
|
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start_mark := token.start_mark |
| 392 |
end_mark := token.start_mark |
| 393 |
|
| 394 |
implicit := true |
| 395 |
if token.typ == yaml_DOCUMENT_END_TOKEN { |
| 396 |
end_mark = token.end_mark |
| 397 |
skip_token(parser) |
| 398 |
implicit = false |
| 399 |
} |
| 400 |
|
| 401 |
parser.tag_directives = parser.tag_directives[:0] |
| 402 |
|
| 403 |
parser.state = yaml_PARSE_DOCUMENT_START_STATE |
| 404 |
*event = yaml_event_t{ |
| 405 |
typ: yaml_DOCUMENT_END_EVENT, |
| 406 |
start_mark: start_mark, |
| 407 |
end_mark: end_mark, |
| 408 |
implicit: implicit, |
| 409 |
} |
| 410 |
yaml_parser_set_event_comments(parser, event) |
| 411 |
if len(event.head_comment) > 0 && len(event.foot_comment) == 0 { |
| 412 |
event.foot_comment = event.head_comment |
| 413 |
event.head_comment = nil |
| 414 |
} |
| 415 |
return true |
| 416 |
} |
| 417 |
|
| 418 |
func yaml_parser_set_event_comments(parser *yaml_parser_t, event *yaml_event_t) { |
| 419 |
event.head_comment = parser.head_comment |
| 420 |
event.line_comment = parser.line_comment |
| 421 |
event.foot_comment = parser.foot_comment |
| 422 |
parser.head_comment = nil |
| 423 |
parser.line_comment = nil |
| 424 |
parser.foot_comment = nil |
| 425 |
parser.tail_comment = nil |
| 426 |
parser.stem_comment = nil |
| 427 |
} |
| 428 |
|
| 429 |
// Parse the productions: |
| 430 |
// block_node_or_indentless_sequence ::= |
| 431 |
// ALIAS |
| 432 |
// ***** |
| 433 |
// | properties (block_content | indentless_block_sequence)? |
| 434 |
// ********** * |
| 435 |
// | block_content | indentless_block_sequence |
| 436 |
// * |
| 437 |
// block_node ::= ALIAS |
| 438 |
// ***** |
| 439 |
// | properties block_content? |
| 440 |
// ********** * |
| 441 |
// | block_content |
| 442 |
// * |
| 443 |
// flow_node ::= ALIAS |
| 444 |
// ***** |
| 445 |
// | properties flow_content? |
| 446 |
// ********** * |
| 447 |
// | flow_content |
| 448 |
// * |
| 449 |
// properties ::= TAG ANCHOR? | ANCHOR TAG? |
| 450 |
// ************************* |
| 451 |
// block_content ::= block_collection | flow_collection | SCALAR |
| 452 |
// ****** |
| 453 |
// flow_content ::= flow_collection | SCALAR |
| 454 |
// ****** |
| 455 |
func yaml_parser_parse_node(parser *yaml_parser_t, event *yaml_event_t, block, indentless_sequence bool) bool { |
| 456 |
//defer trace("yaml_parser_parse_node", "block:", block, "indentless_sequence:", indentless_sequence)() |
| 457 |
|
| 458 |
token := peek_token(parser) |
| 459 |
if token == nil { |
| 460 |
return false |
| 461 |
} |
| 462 |
|
| 463 |
if token.typ == yaml_ALIAS_TOKEN { |
| 464 |
parser.state = parser.states[len(parser.states)-1] |
| 465 |
parser.states = parser.states[:len(parser.states)-1] |
| 466 |
*event = yaml_event_t{ |
| 467 |
typ: yaml_ALIAS_EVENT, |
| 468 |
start_mark: token.start_mark, |
| 469 |
end_mark: token.end_mark, |
| 470 |
anchor: token.value, |
| 471 |
} |
| 472 |
yaml_parser_set_event_comments(parser, event) |
| 473 |
skip_token(parser) |
| 474 |
return true |
| 475 |
} |
| 476 |
|
| 477 |
start_mark := token.start_mark |
| 478 |
end_mark := token.start_mark |
| 479 |
|
| 480 |
var tag_token bool |
| 481 |
var tag_handle, tag_suffix, anchor []byte |
| 482 |
var tag_mark yaml_mark_t |
| 483 |
if token.typ == yaml_ANCHOR_TOKEN { |
| 484 |
anchor = token.value |
| 485 |
start_mark = token.start_mark |
| 486 |
end_mark = token.end_mark |
| 487 |
skip_token(parser) |
| 488 |
token = peek_token(parser) |
| 489 |
if token == nil { |
| 490 |
return false |
| 491 |
} |
| 492 |
if token.typ == yaml_TAG_TOKEN { |
| 493 |
tag_token = true |
| 494 |
tag_handle = token.value |
| 495 |
tag_suffix = token.suffix |
| 496 |
tag_mark = token.start_mark |
| 497 |
end_mark = token.end_mark |
| 498 |
skip_token(parser) |
| 499 |
token = peek_token(parser) |
| 500 |
if token == nil { |
| 501 |
return false |
| 502 |
} |
| 503 |
} |
| 504 |
} else if token.typ == yaml_TAG_TOKEN { |
| 505 |
tag_token = true |
| 506 |
tag_handle = token.value |
| 507 |
tag_suffix = token.suffix |
| 508 |
start_mark = token.start_mark |
| 509 |
tag_mark = token.start_mark |
| 510 |
end_mark = token.end_mark |
| 511 |
skip_token(parser) |
| 512 |
token = peek_token(parser) |
| 513 |
if token == nil { |
| 514 |
return false |
| 515 |
} |
| 516 |
if token.typ == yaml_ANCHOR_TOKEN { |
| 517 |
anchor = token.value |
| 518 |
end_mark = token.end_mark |
| 519 |
skip_token(parser) |
| 520 |
token = peek_token(parser) |
| 521 |
if token == nil { |
| 522 |
return false |
| 523 |
} |
| 524 |
} |
| 525 |
} |
| 526 |
|
| 527 |
var tag []byte |
| 528 |
if tag_token { |
| 529 |
if len(tag_handle) == 0 { |
| 530 |
tag = tag_suffix |
| 531 |
tag_suffix = nil |
| 532 |
} else { |
| 533 |
for i := range parser.tag_directives { |
| 534 |
if bytes.Equal(parser.tag_directives[i].handle, tag_handle) { |
| 535 |
tag = append([]byte(nil), parser.tag_directives[i].prefix...) |
| 536 |
tag = append(tag, tag_suffix...) |
| 537 |
break |
| 538 |
} |
| 539 |
} |
| 540 |
if len(tag) == 0 { |
| 541 |
yaml_parser_set_parser_error_context(parser, |
| 542 |
"while parsing a node", start_mark, |
| 543 |
"found undefined tag handle", tag_mark) |
| 544 |
return false |
| 545 |
} |
| 546 |
} |
| 547 |
} |
| 548 |
|
| 549 |
implicit := len(tag) == 0 |
| 550 |
if indentless_sequence && token.typ == yaml_BLOCK_ENTRY_TOKEN { |
| 551 |
end_mark = token.end_mark |
| 552 |
parser.state = yaml_PARSE_INDENTLESS_SEQUENCE_ENTRY_STATE |
| 553 |
*event = yaml_event_t{ |
| 554 |
typ: yaml_SEQUENCE_START_EVENT, |
| 555 |
start_mark: start_mark, |
| 556 |
end_mark: end_mark, |
| 557 |
anchor: anchor, |
| 558 |
tag: tag, |
| 559 |
implicit: implicit, |
| 560 |
style: yaml_style_t(yaml_BLOCK_SEQUENCE_STYLE), |
| 561 |
} |
| 562 |
return true |
| 563 |
} |
| 564 |
if token.typ == yaml_SCALAR_TOKEN { |
| 565 |
var plain_implicit, quoted_implicit bool |
| 566 |
end_mark = token.end_mark |
| 567 |
if (len(tag) == 0 && token.style == yaml_PLAIN_SCALAR_STYLE) || (len(tag) == 1 && tag[0] == '!') { |
| 568 |
plain_implicit = true |
| 569 |
} else if len(tag) == 0 { |
| 570 |
quoted_implicit = true |
| 571 |
} |
| 572 |
parser.state = parser.states[len(parser.states)-1] |
| 573 |
parser.states = parser.states[:len(parser.states)-1] |
| 574 |
|
| 575 |
*event = yaml_event_t{ |
| 576 |
typ: yaml_SCALAR_EVENT, |
| 577 |
start_mark: start_mark, |
| 578 |
end_mark: end_mark, |
| 579 |
anchor: anchor, |
| 580 |
tag: tag, |
| 581 |
value: token.value, |
| 582 |
implicit: plain_implicit, |
| 583 |
quoted_implicit: quoted_implicit, |
| 584 |
style: yaml_style_t(token.style), |
| 585 |
} |
| 586 |
yaml_parser_set_event_comments(parser, event) |
| 587 |
skip_token(parser) |
| 588 |
return true |
| 589 |
} |
| 590 |
if token.typ == yaml_FLOW_SEQUENCE_START_TOKEN { |
| 591 |
// [Go] Some of the events below can be merged as they differ only on style. |
| 592 |
end_mark = token.end_mark |
| 593 |
parser.state = yaml_PARSE_FLOW_SEQUENCE_FIRST_ENTRY_STATE |
| 594 |
*event = yaml_event_t{ |
| 595 |
typ: yaml_SEQUENCE_START_EVENT, |
| 596 |
start_mark: start_mark, |
| 597 |
end_mark: end_mark, |
| 598 |
anchor: anchor, |
| 599 |
tag: tag, |
| 600 |
implicit: implicit, |
| 601 |
style: yaml_style_t(yaml_FLOW_SEQUENCE_STYLE), |
| 602 |
} |
| 603 |
yaml_parser_set_event_comments(parser, event) |
| 604 |
return true |
| 605 |
} |
| 606 |
if token.typ == yaml_FLOW_MAPPING_START_TOKEN { |
| 607 |
end_mark = token.end_mark |
| 608 |
parser.state = yaml_PARSE_FLOW_MAPPING_FIRST_KEY_STATE |
| 609 |
*event = yaml_event_t{ |
| 610 |
typ: yaml_MAPPING_START_EVENT, |
| 611 |
start_mark: start_mark, |
| 612 |
end_mark: end_mark, |
| 613 |
anchor: anchor, |
| 614 |
tag: tag, |
| 615 |
implicit: implicit, |
| 616 |
style: yaml_style_t(yaml_FLOW_MAPPING_STYLE), |
| 617 |
} |
| 618 |
yaml_parser_set_event_comments(parser, event) |
| 619 |
return true |
| 620 |
} |
| 621 |
if block && token.typ == yaml_BLOCK_SEQUENCE_START_TOKEN { |
| 622 |
end_mark = token.end_mark |
| 623 |
parser.state = yaml_PARSE_BLOCK_SEQUENCE_FIRST_ENTRY_STATE |
| 624 |
*event = yaml_event_t{ |
| 625 |
typ: yaml_SEQUENCE_START_EVENT, |
| 626 |
start_mark: start_mark, |
| 627 |
end_mark: end_mark, |
| 628 |
anchor: anchor, |
| 629 |
tag: tag, |
| 630 |
implicit: implicit, |
| 631 |
style: yaml_style_t(yaml_BLOCK_SEQUENCE_STYLE), |
| 632 |
} |
| 633 |
if parser.stem_comment != nil { |
| 634 |
event.head_comment = parser.stem_comment |
| 635 |
parser.stem_comment = nil |
| 636 |
} |
| 637 |
return true |
| 638 |
} |
| 639 |
if block && token.typ == yaml_BLOCK_MAPPING_START_TOKEN { |
| 640 |
end_mark = token.end_mark |
| 641 |
parser.state = yaml_PARSE_BLOCK_MAPPING_FIRST_KEY_STATE |
| 642 |
*event = yaml_event_t{ |
| 643 |
typ: yaml_MAPPING_START_EVENT, |
| 644 |
start_mark: start_mark, |
| 645 |
end_mark: end_mark, |
| 646 |
anchor: anchor, |
| 647 |
tag: tag, |
| 648 |
implicit: implicit, |
| 649 |
style: yaml_style_t(yaml_BLOCK_MAPPING_STYLE), |
| 650 |
} |
| 651 |
if parser.stem_comment != nil { |
| 652 |
event.head_comment = parser.stem_comment |
| 653 |
parser.stem_comment = nil |
| 654 |
} |
| 655 |
return true |
| 656 |
} |
| 657 |
if len(anchor) > 0 || len(tag) > 0 { |
| 658 |
parser.state = parser.states[len(parser.states)-1] |
| 659 |
parser.states = parser.states[:len(parser.states)-1] |
| 660 |
|
| 661 |
*event = yaml_event_t{ |
| 662 |
typ: yaml_SCALAR_EVENT, |
| 663 |
start_mark: start_mark, |
| 664 |
end_mark: end_mark, |
| 665 |
anchor: anchor, |
| 666 |
tag: tag, |
| 667 |
implicit: implicit, |
| 668 |
quoted_implicit: false, |
| 669 |
style: yaml_style_t(yaml_PLAIN_SCALAR_STYLE), |
| 670 |
} |
| 671 |
return true |
| 672 |
} |
| 673 |
|
| 674 |
context := "while parsing a flow node" |
| 675 |
if block { |
| 676 |
context = "while parsing a block node" |
| 677 |
} |
| 678 |
yaml_parser_set_parser_error_context(parser, context, start_mark, |
| 679 |
"did not find expected node content", token.start_mark) |
| 680 |
return false |
| 681 |
} |
| 682 |
|
| 683 |
// Parse the productions: |
| 684 |
// block_sequence ::= BLOCK-SEQUENCE-START (BLOCK-ENTRY block_node?)* BLOCK-END |
| 685 |
// ******************** *********** * ********* |
| 686 |
// |
| 687 |
func yaml_parser_parse_block_sequence_entry(parser *yaml_parser_t, event *yaml_event_t, first bool) bool { |
| 688 |
if first { |
| 689 |
token := peek_token(parser) |
| 690 |
if token == nil { |
| 691 |
return false |
| 692 |
} |
| 693 |
parser.marks = append(parser.marks, token.start_mark) |
| 694 |
skip_token(parser) |
| 695 |
} |
| 696 |
|
| 697 |
token := peek_token(parser) |
| 698 |
if token == nil { |
| 699 |
return false |
| 700 |
} |
| 701 |
|
| 702 |
if token.typ == yaml_BLOCK_ENTRY_TOKEN { |
| 703 |
mark := token.end_mark |
| 704 |
prior_head_len := len(parser.head_comment) |
| 705 |
skip_token(parser) |
| 706 |
yaml_parser_split_stem_comment(parser, prior_head_len) |
| 707 |
token = peek_token(parser) |
| 708 |
if token == nil { |
| 709 |
return false |
| 710 |
} |
| 711 |
if token.typ != yaml_BLOCK_ENTRY_TOKEN && token.typ != yaml_BLOCK_END_TOKEN { |
| 712 |
parser.states = append(parser.states, yaml_PARSE_BLOCK_SEQUENCE_ENTRY_STATE) |
| 713 |
return yaml_parser_parse_node(parser, event, true, false) |
| 714 |
} else { |
| 715 |
parser.state = yaml_PARSE_BLOCK_SEQUENCE_ENTRY_STATE |
| 716 |
return yaml_parser_process_empty_scalar(parser, event, mark) |
| 717 |
} |
| 718 |
} |
| 719 |
if token.typ == yaml_BLOCK_END_TOKEN { |
| 720 |
parser.state = parser.states[len(parser.states)-1] |
| 721 |
parser.states = parser.states[:len(parser.states)-1] |
| 722 |
parser.marks = parser.marks[:len(parser.marks)-1] |
| 723 |
|
| 724 |
*event = yaml_event_t{ |
| 725 |
typ: yaml_SEQUENCE_END_EVENT, |
| 726 |
start_mark: token.start_mark, |
| 727 |
end_mark: token.end_mark, |
| 728 |
} |
| 729 |
|
| 730 |
skip_token(parser) |
| 731 |
return true |
| 732 |
} |
| 733 |
|
| 734 |
context_mark := parser.marks[len(parser.marks)-1] |
| 735 |
parser.marks = parser.marks[:len(parser.marks)-1] |
| 736 |
return yaml_parser_set_parser_error_context(parser, |
| 737 |
"while parsing a block collection", context_mark, |
| 738 |
"did not find expected '-' indicator", token.start_mark) |
| 739 |
} |
| 740 |
|
| 741 |
// Parse the productions: |
| 742 |
// indentless_sequence ::= (BLOCK-ENTRY block_node?)+ |
| 743 |
// *********** * |
| 744 |
func yaml_parser_parse_indentless_sequence_entry(parser *yaml_parser_t, event *yaml_event_t) bool { |
| 745 |
token := peek_token(parser) |
| 746 |
if token == nil { |
| 747 |
return false |
| 748 |
} |
| 749 |
|
| 750 |
if token.typ == yaml_BLOCK_ENTRY_TOKEN { |
| 751 |
mark := token.end_mark |
| 752 |
prior_head_len := len(parser.head_comment) |
| 753 |
skip_token(parser) |
| 754 |
yaml_parser_split_stem_comment(parser, prior_head_len) |
| 755 |
token = peek_token(parser) |
| 756 |
if token == nil { |
| 757 |
return false |
| 758 |
} |
| 759 |
if token.typ != yaml_BLOCK_ENTRY_TOKEN && |
| 760 |
token.typ != yaml_KEY_TOKEN && |
| 761 |
token.typ != yaml_VALUE_TOKEN && |
| 762 |
token.typ != yaml_BLOCK_END_TOKEN { |
| 763 |
parser.states = append(parser.states, yaml_PARSE_INDENTLESS_SEQUENCE_ENTRY_STATE) |
| 764 |
return yaml_parser_parse_node(parser, event, true, false) |
| 765 |
} |
| 766 |
parser.state = yaml_PARSE_INDENTLESS_SEQUENCE_ENTRY_STATE |
| 767 |
return yaml_parser_process_empty_scalar(parser, event, mark) |
| 768 |
} |
| 769 |
parser.state = parser.states[len(parser.states)-1] |
| 770 |
parser.states = parser.states[:len(parser.states)-1] |
| 771 |
|
| 772 |
*event = yaml_event_t{ |
| 773 |
typ: yaml_SEQUENCE_END_EVENT, |
| 774 |
start_mark: token.start_mark, |
| 775 |
end_mark: token.start_mark, // [Go] Shouldn't this be token.end_mark? |
| 776 |
} |
| 777 |
return true |
| 778 |
} |
| 779 |
|
| 780 |
// Split stem comment from head comment. |
| 781 |
// |
| 782 |
// When a sequence or map is found under a sequence entry, the former head comment |
| 783 |
// is assigned to the underlying sequence or map as a whole, not the individual |
| 784 |
// sequence or map entry as would be expected otherwise. To handle this case the |
| 785 |
// previous head comment is moved aside as the stem comment. |
| 786 |
func yaml_parser_split_stem_comment(parser *yaml_parser_t, stem_len int) { |
| 787 |
if stem_len == 0 { |
| 788 |
return |
| 789 |
} |
| 790 |
|
| 791 |
token := peek_token(parser) |
| 792 |
if token == nil || token.typ != yaml_BLOCK_SEQUENCE_START_TOKEN && token.typ != yaml_BLOCK_MAPPING_START_TOKEN { |
| 793 |
return |
| 794 |
} |
| 795 |
|
| 796 |
parser.stem_comment = parser.head_comment[:stem_len] |
| 797 |
if len(parser.head_comment) == stem_len { |
| 798 |
parser.head_comment = nil |
| 799 |
} else { |
| 800 |
// Copy suffix to prevent very strange bugs if someone ever appends |
| 801 |
// further bytes to the prefix in the stem_comment slice above. |
| 802 |
parser.head_comment = append([]byte(nil), parser.head_comment[stem_len+1:]...) |
| 803 |
} |
| 804 |
} |
| 805 |
|
| 806 |
// Parse the productions: |
| 807 |
// block_mapping ::= BLOCK-MAPPING_START |
| 808 |
// ******************* |
| 809 |
// ((KEY block_node_or_indentless_sequence?)? |
| 810 |
// *** * |
| 811 |
// (VALUE block_node_or_indentless_sequence?)?)* |
| 812 |
// |
| 813 |
// BLOCK-END |
| 814 |
// ********* |
| 815 |
// |
| 816 |
func yaml_parser_parse_block_mapping_key(parser *yaml_parser_t, event *yaml_event_t, first bool) bool { |
| 817 |
if first { |
| 818 |
token := peek_token(parser) |
| 819 |
if token == nil { |
| 820 |
return false |
| 821 |
} |
| 822 |
parser.marks = append(parser.marks, token.start_mark) |
| 823 |
skip_token(parser) |
| 824 |
} |
| 825 |
|
| 826 |
token := peek_token(parser) |
| 827 |
if token == nil { |
| 828 |
return false |
| 829 |
} |
| 830 |
|
| 831 |
// [Go] A tail comment was left from the prior mapping value processed. Emit an event |
| 832 |
// as it needs to be processed with that value and not the following key. |
| 833 |
if len(parser.tail_comment) > 0 { |
| 834 |
*event = yaml_event_t{ |
| 835 |
typ: yaml_TAIL_COMMENT_EVENT, |
| 836 |
start_mark: token.start_mark, |
| 837 |
end_mark: token.end_mark, |
| 838 |
foot_comment: parser.tail_comment, |
| 839 |
} |
| 840 |
parser.tail_comment = nil |
| 841 |
return true |
| 842 |
} |
| 843 |
|
| 844 |
if token.typ == yaml_KEY_TOKEN { |
| 845 |
mark := token.end_mark |
| 846 |
skip_token(parser) |
| 847 |
token = peek_token(parser) |
| 848 |
if token == nil { |
| 849 |
return false |
| 850 |
} |
| 851 |
if token.typ != yaml_KEY_TOKEN && |
| 852 |
token.typ != yaml_VALUE_TOKEN && |
| 853 |
token.typ != yaml_BLOCK_END_TOKEN { |
| 854 |
parser.states = append(parser.states, yaml_PARSE_BLOCK_MAPPING_VALUE_STATE) |
| 855 |
return yaml_parser_parse_node(parser, event, true, true) |
| 856 |
} else { |
| 857 |
parser.state = yaml_PARSE_BLOCK_MAPPING_VALUE_STATE |
| 858 |
return yaml_parser_process_empty_scalar(parser, event, mark) |
| 859 |
} |
| 860 |
} else if token.typ == yaml_BLOCK_END_TOKEN { |
| 861 |
parser.state = parser.states[len(parser.states)-1] |
| 862 |
parser.states = parser.states[:len(parser.states)-1] |
| 863 |
parser.marks = parser.marks[:len(parser.marks)-1] |
| 864 |
*event = yaml_event_t{ |
| 865 |
typ: yaml_MAPPING_END_EVENT, |
| 866 |
start_mark: token.start_mark, |
| 867 |
end_mark: token.end_mark, |
| 868 |
} |
| 869 |
yaml_parser_set_event_comments(parser, event) |
| 870 |
skip_token(parser) |
| 871 |
return true |
| 872 |
} |
| 873 |
|
| 874 |
context_mark := parser.marks[len(parser.marks)-1] |
| 875 |
parser.marks = parser.marks[:len(parser.marks)-1] |
| 876 |
return yaml_parser_set_parser_error_context(parser, |
| 877 |
"while parsing a block mapping", context_mark, |
| 878 |
"did not find expected key", token.start_mark) |
| 879 |
} |
| 880 |
|
| 881 |
// Parse the productions: |
| 882 |
// block_mapping ::= BLOCK-MAPPING_START |
| 883 |
// |
| 884 |
// ((KEY block_node_or_indentless_sequence?)? |
| 885 |
// |
| 886 |
// (VALUE block_node_or_indentless_sequence?)?)* |
| 887 |
// ***** * |
| 888 |
// BLOCK-END |
| 889 |
// |
| 890 |
// |
| 891 |
func yaml_parser_parse_block_mapping_value(parser *yaml_parser_t, event *yaml_event_t) bool { |
| 892 |
token := peek_token(parser) |
| 893 |
if token == nil { |
| 894 |
return false |
| 895 |
} |
| 896 |
if token.typ == yaml_VALUE_TOKEN { |
| 897 |
mark := token.end_mark |
| 898 |
skip_token(parser) |
| 899 |
token = peek_token(parser) |
| 900 |
if token == nil { |
| 901 |
return false |
| 902 |
} |
| 903 |
if token.typ != yaml_KEY_TOKEN && |
| 904 |
token.typ != yaml_VALUE_TOKEN && |
| 905 |
token.typ != yaml_BLOCK_END_TOKEN { |
| 906 |
parser.states = append(parser.states, yaml_PARSE_BLOCK_MAPPING_KEY_STATE) |
| 907 |
return yaml_parser_parse_node(parser, event, true, true) |
| 908 |
} |
| 909 |
parser.state = yaml_PARSE_BLOCK_MAPPING_KEY_STATE |
| 910 |
return yaml_parser_process_empty_scalar(parser, event, mark) |
| 911 |
} |
| 912 |
parser.state = yaml_PARSE_BLOCK_MAPPING_KEY_STATE |
| 913 |
return yaml_parser_process_empty_scalar(parser, event, token.start_mark) |
| 914 |
} |
| 915 |
|
| 916 |
// Parse the productions: |
| 917 |
// flow_sequence ::= FLOW-SEQUENCE-START |
| 918 |
// ******************* |
| 919 |
// (flow_sequence_entry FLOW-ENTRY)* |
| 920 |
// * ********** |
| 921 |
// flow_sequence_entry? |
| 922 |
// * |
| 923 |
// FLOW-SEQUENCE-END |
| 924 |
// ***************** |
| 925 |
// flow_sequence_entry ::= flow_node | KEY flow_node? (VALUE flow_node?)? |
| 926 |
// * |
| 927 |
// |
| 928 |
func yaml_parser_parse_flow_sequence_entry(parser *yaml_parser_t, event *yaml_event_t, first bool) bool { |
| 929 |
if first { |
| 930 |
token := peek_token(parser) |
| 931 |
if token == nil { |
| 932 |
return false |
| 933 |
} |
| 934 |
parser.marks = append(parser.marks, token.start_mark) |
| 935 |
skip_token(parser) |
| 936 |
} |
| 937 |
token := peek_token(parser) |
| 938 |
if token == nil { |
| 939 |
return false |
| 940 |
} |
| 941 |
if token.typ != yaml_FLOW_SEQUENCE_END_TOKEN { |
| 942 |
if !first { |
| 943 |
if token.typ == yaml_FLOW_ENTRY_TOKEN { |
| 944 |
skip_token(parser) |
| 945 |
token = peek_token(parser) |
| 946 |
if token == nil { |
| 947 |
return false |
| 948 |
} |
| 949 |
} else { |
| 950 |
context_mark := parser.marks[len(parser.marks)-1] |
| 951 |
parser.marks = parser.marks[:len(parser.marks)-1] |
| 952 |
return yaml_parser_set_parser_error_context(parser, |
| 953 |
"while parsing a flow sequence", context_mark, |
| 954 |
"did not find expected ',' or ']'", token.start_mark) |
| 955 |
} |
| 956 |
} |
| 957 |
|
| 958 |
if token.typ == yaml_KEY_TOKEN { |
| 959 |
parser.state = yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_KEY_STATE |
| 960 |
*event = yaml_event_t{ |
| 961 |
typ: yaml_MAPPING_START_EVENT, |
| 962 |
start_mark: token.start_mark, |
| 963 |
end_mark: token.end_mark, |
| 964 |
implicit: true, |
| 965 |
style: yaml_style_t(yaml_FLOW_MAPPING_STYLE), |
| 966 |
} |
| 967 |
skip_token(parser) |
| 968 |
return true |
| 969 |
} else if token.typ != yaml_FLOW_SEQUENCE_END_TOKEN { |
| 970 |
parser.states = append(parser.states, yaml_PARSE_FLOW_SEQUENCE_ENTRY_STATE) |
| 971 |
return yaml_parser_parse_node(parser, event, false, false) |
| 972 |
} |
| 973 |
} |
| 974 |
|
| 975 |
parser.state = parser.states[len(parser.states)-1] |
| 976 |
parser.states = parser.states[:len(parser.states)-1] |
| 977 |
parser.marks = parser.marks[:len(parser.marks)-1] |
| 978 |
|
| 979 |
*event = yaml_event_t{ |
| 980 |
typ: yaml_SEQUENCE_END_EVENT, |
| 981 |
start_mark: token.start_mark, |
| 982 |
end_mark: token.end_mark, |
| 983 |
} |
| 984 |
yaml_parser_set_event_comments(parser, event) |
| 985 |
|
| 986 |
skip_token(parser) |
| 987 |
return true |
| 988 |
} |
| 989 |
|
| 990 |
// |
| 991 |
// Parse the productions: |
| 992 |
// flow_sequence_entry ::= flow_node | KEY flow_node? (VALUE flow_node?)? |
| 993 |
// *** * |
| 994 |
// |
| 995 |
func yaml_parser_parse_flow_sequence_entry_mapping_key(parser *yaml_parser_t, event *yaml_event_t) bool { |
| 996 |
token := peek_token(parser) |
| 997 |
if token == nil { |
| 998 |
return false |
| 999 |
} |
| 1000 |
if token.typ != yaml_VALUE_TOKEN && |
| 1001 |
token.typ != yaml_FLOW_ENTRY_TOKEN && |
| 1002 |
token.typ != yaml_FLOW_SEQUENCE_END_TOKEN { |
| 1003 |
parser.states = append(parser.states, yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_VALUE_STATE) |
| 1004 |
return yaml_parser_parse_node(parser, event, false, false) |
| 1005 |
} |
| 1006 |
mark := token.end_mark |
| 1007 |
skip_token(parser) |
| 1008 |
parser.state = yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_VALUE_STATE |
| 1009 |
return yaml_parser_process_empty_scalar(parser, event, mark) |
| 1010 |
} |
| 1011 |
|
| 1012 |
// Parse the productions: |
| 1013 |
// flow_sequence_entry ::= flow_node | KEY flow_node? (VALUE flow_node?)? |
| 1014 |
// ***** * |
| 1015 |
// |
| 1016 |
func yaml_parser_parse_flow_sequence_entry_mapping_value(parser *yaml_parser_t, event *yaml_event_t) bool { |
| 1017 |
token := peek_token(parser) |
| 1018 |
if token == nil { |
| 1019 |
return false |
| 1020 |
} |
| 1021 |
if token.typ == yaml_VALUE_TOKEN { |
| 1022 |
skip_token(parser) |
| 1023 |
token := peek_token(parser) |
| 1024 |
if token == nil { |
| 1025 |
return false |
| 1026 |
} |
| 1027 |
if token.typ != yaml_FLOW_ENTRY_TOKEN && token.typ != yaml_FLOW_SEQUENCE_END_TOKEN { |
| 1028 |
parser.states = append(parser.states, yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_END_STATE) |
| 1029 |
return yaml_parser_parse_node(parser, event, false, false) |
| 1030 |
} |
| 1031 |
} |
| 1032 |
parser.state = yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_END_STATE |
| 1033 |
return yaml_parser_process_empty_scalar(parser, event, token.start_mark) |
| 1034 |
} |
| 1035 |
|
| 1036 |
// Parse the productions: |
| 1037 |
// flow_sequence_entry ::= flow_node | KEY flow_node? (VALUE flow_node?)? |
| 1038 |
// * |
| 1039 |
// |
| 1040 |
func yaml_parser_parse_flow_sequence_entry_mapping_end(parser *yaml_parser_t, event *yaml_event_t) bool { |
| 1041 |
token := peek_token(parser) |
| 1042 |
if token == nil { |
| 1043 |
return false |
| 1044 |
} |
| 1045 |
parser.state = yaml_PARSE_FLOW_SEQUENCE_ENTRY_STATE |
| 1046 |
*event = yaml_event_t{ |
| 1047 |
typ: yaml_MAPPING_END_EVENT, |
| 1048 |
start_mark: token.start_mark, |
| 1049 |
end_mark: token.start_mark, // [Go] Shouldn't this be end_mark? |
| 1050 |
} |
| 1051 |
return true |
| 1052 |
} |
| 1053 |
|
| 1054 |
// Parse the productions: |
| 1055 |
// flow_mapping ::= FLOW-MAPPING-START |
| 1056 |
// ****************** |
| 1057 |
// (flow_mapping_entry FLOW-ENTRY)* |
| 1058 |
// * ********** |
| 1059 |
// flow_mapping_entry? |
| 1060 |
// ****************** |
| 1061 |
// FLOW-MAPPING-END |
| 1062 |
// **************** |
| 1063 |
// flow_mapping_entry ::= flow_node | KEY flow_node? (VALUE flow_node?)? |
| 1064 |
// * *** * |
| 1065 |
// |
| 1066 |
func yaml_parser_parse_flow_mapping_key(parser *yaml_parser_t, event *yaml_event_t, first bool) bool { |
| 1067 |
if first { |
| 1068 |
token := peek_token(parser) |
| 1069 |
parser.marks = append(parser.marks, token.start_mark) |
| 1070 |
skip_token(parser) |
| 1071 |
} |
| 1072 |
|
| 1073 |
token := peek_token(parser) |
| 1074 |
if token == nil { |
| 1075 |
return false |
| 1076 |
} |
| 1077 |
|
| 1078 |
if token.typ != yaml_FLOW_MAPPING_END_TOKEN { |
| 1079 |
if !first { |
| 1080 |
if token.typ == yaml_FLOW_ENTRY_TOKEN { |
| 1081 |
skip_token(parser) |
| 1082 |
token = peek_token(parser) |
| 1083 |
if token == nil { |
| 1084 |
return false |
| 1085 |
} |
| 1086 |
} else { |
| 1087 |
context_mark := parser.marks[len(parser.marks)-1] |
| 1088 |
parser.marks = parser.marks[:len(parser.marks)-1] |
| 1089 |
return yaml_parser_set_parser_error_context(parser, |
| 1090 |
"while parsing a flow mapping", context_mark, |
| 1091 |
"did not find expected ',' or '}'", token.start_mark) |
| 1092 |
} |
| 1093 |
} |
| 1094 |
|
| 1095 |
if token.typ == yaml_KEY_TOKEN { |
| 1096 |
skip_token(parser) |
| 1097 |
token = peek_token(parser) |
| 1098 |
if token == nil { |
| 1099 |
return false |
| 1100 |
} |
| 1101 |
if token.typ != yaml_VALUE_TOKEN && |
| 1102 |
token.typ != yaml_FLOW_ENTRY_TOKEN && |
| 1103 |
token.typ != yaml_FLOW_MAPPING_END_TOKEN { |
| 1104 |
parser.states = append(parser.states, yaml_PARSE_FLOW_MAPPING_VALUE_STATE) |
| 1105 |
return yaml_parser_parse_node(parser, event, false, false) |
| 1106 |
} else { |
| 1107 |
parser.state = yaml_PARSE_FLOW_MAPPING_VALUE_STATE |
| 1108 |
return yaml_parser_process_empty_scalar(parser, event, token.start_mark) |
| 1109 |
} |
| 1110 |
} else if token.typ != yaml_FLOW_MAPPING_END_TOKEN { |
| 1111 |
parser.states = append(parser.states, yaml_PARSE_FLOW_MAPPING_EMPTY_VALUE_STATE) |
| 1112 |
return yaml_parser_parse_node(parser, event, false, false) |
| 1113 |
} |
| 1114 |
} |
| 1115 |
|
| 1116 |
parser.state = parser.states[len(parser.states)-1] |
| 1117 |
parser.states = parser.states[:len(parser.states)-1] |
| 1118 |
parser.marks = parser.marks[:len(parser.marks)-1] |
| 1119 |
*event = yaml_event_t{ |
| 1120 |
typ: yaml_MAPPING_END_EVENT, |
| 1121 |
start_mark: token.start_mark, |
| 1122 |
end_mark: token.end_mark, |
| 1123 |
} |
| 1124 |
yaml_parser_set_event_comments(parser, event) |
| 1125 |
skip_token(parser) |
| 1126 |
return true |
| 1127 |
} |
| 1128 |
|
| 1129 |
// Parse the productions: |
| 1130 |
// flow_mapping_entry ::= flow_node | KEY flow_node? (VALUE flow_node?)? |
| 1131 |
// * ***** * |
| 1132 |
// |
| 1133 |
func yaml_parser_parse_flow_mapping_value(parser *yaml_parser_t, event *yaml_event_t, empty bool) bool { |
| 1134 |
token := peek_token(parser) |
| 1135 |
if token == nil { |
| 1136 |
return false |
| 1137 |
} |
| 1138 |
if empty { |
| 1139 |
parser.state = yaml_PARSE_FLOW_MAPPING_KEY_STATE |
| 1140 |
return yaml_parser_process_empty_scalar(parser, event, token.start_mark) |
| 1141 |
} |
| 1142 |
if token.typ == yaml_VALUE_TOKEN { |
| 1143 |
skip_token(parser) |
| 1144 |
token = peek_token(parser) |
| 1145 |
if token == nil { |
| 1146 |
return false |
| 1147 |
} |
| 1148 |
if token.typ != yaml_FLOW_ENTRY_TOKEN && token.typ != yaml_FLOW_MAPPING_END_TOKEN { |
| 1149 |
parser.states = append(parser.states, yaml_PARSE_FLOW_MAPPING_KEY_STATE) |
| 1150 |
return yaml_parser_parse_node(parser, event, false, false) |
| 1151 |
} |
| 1152 |
} |
| 1153 |
parser.state = yaml_PARSE_FLOW_MAPPING_KEY_STATE |
| 1154 |
return yaml_parser_process_empty_scalar(parser, event, token.start_mark) |
| 1155 |
} |
| 1156 |
|
| 1157 |
// Generate an empty scalar event. |
| 1158 |
func yaml_parser_process_empty_scalar(parser *yaml_parser_t, event *yaml_event_t, mark yaml_mark_t) bool { |
| 1159 |
*event = yaml_event_t{ |
| 1160 |
typ: yaml_SCALAR_EVENT, |
| 1161 |
start_mark: mark, |
| 1162 |
end_mark: mark, |
| 1163 |
value: nil, // Empty |
| 1164 |
implicit: true, |
| 1165 |
style: yaml_style_t(yaml_PLAIN_SCALAR_STYLE), |
| 1166 |
} |
| 1167 |
return true |
| 1168 |
} |
| 1169 |
|
| 1170 |
var default_tag_directives = []yaml_tag_directive_t{ |
| 1171 |
{[]byte("!"), []byte("!")}, |
| 1172 |
{[]byte("!!"), []byte("tag:yaml.org,2002:")}, |
| 1173 |
} |
| 1174 |
|
| 1175 |
// Parse directives. |
| 1176 |
func yaml_parser_process_directives(parser *yaml_parser_t, |
| 1177 |
version_directive_ref **yaml_version_directive_t, |
| 1178 |
tag_directives_ref *[]yaml_tag_directive_t) bool { |
| 1179 |
|
| 1180 |
var version_directive *yaml_version_directive_t |
| 1181 |
var tag_directives []yaml_tag_directive_t |
| 1182 |
|
| 1183 |
token := peek_token(parser) |
| 1184 |
if token == nil { |
| 1185 |
return false |
| 1186 |
} |
| 1187 |
|
| 1188 |
for token.typ == yaml_VERSION_DIRECTIVE_TOKEN || token.typ == yaml_TAG_DIRECTIVE_TOKEN { |
| 1189 |
if token.typ == yaml_VERSION_DIRECTIVE_TOKEN { |
| 1190 |
if version_directive != nil { |
| 1191 |
yaml_parser_set_parser_error(parser, |
| 1192 |
"found duplicate %YAML directive", token.start_mark) |
| 1193 |
return false |
| 1194 |
} |
| 1195 |
if token.major != 1 || token.minor != 1 { |
| 1196 |
yaml_parser_set_parser_error(parser, |
| 1197 |
"found incompatible YAML document", token.start_mark) |
| 1198 |
return false |
| 1199 |
} |
| 1200 |
version_directive = &yaml_version_directive_t{ |
| 1201 |
major: token.major, |
| 1202 |
minor: token.minor, |
| 1203 |
} |
| 1204 |
} else if token.typ == yaml_TAG_DIRECTIVE_TOKEN { |
| 1205 |
value := yaml_tag_directive_t{ |
| 1206 |
handle: token.value, |
| 1207 |
prefix: token.prefix, |
| 1208 |
} |
| 1209 |
if !yaml_parser_append_tag_directive(parser, value, false, token.start_mark) { |
| 1210 |
return false |
| 1211 |
} |
| 1212 |
tag_directives = append(tag_directives, value) |
| 1213 |
} |
| 1214 |
|
| 1215 |
skip_token(parser) |
| 1216 |
token = peek_token(parser) |
| 1217 |
if token == nil { |
| 1218 |
return false |
| 1219 |
} |
| 1220 |
} |
| 1221 |
|
| 1222 |
for i := range default_tag_directives { |
| 1223 |
if !yaml_parser_append_tag_directive(parser, default_tag_directives[i], true, token.start_mark) { |
| 1224 |
return false |
| 1225 |
} |
| 1226 |
} |
| 1227 |
|
| 1228 |
if version_directive_ref != nil { |
| 1229 |
*version_directive_ref = version_directive |
| 1230 |
} |
| 1231 |
if tag_directives_ref != nil { |
| 1232 |
*tag_directives_ref = tag_directives |
| 1233 |
} |
| 1234 |
return true |
| 1235 |
} |
| 1236 |
|
| 1237 |
// Append a tag directive to the directives stack. |
| 1238 |
func yaml_parser_append_tag_directive(parser *yaml_parser_t, value yaml_tag_directive_t, allow_duplicates bool, mark yaml_mark_t) bool { |
| 1239 |
for i := range parser.tag_directives { |
| 1240 |
if bytes.Equal(value.handle, parser.tag_directives[i].handle) { |
| 1241 |
if allow_duplicates { |
| 1242 |
return true |
| 1243 |
} |
| 1244 |
return yaml_parser_set_parser_error(parser, "found duplicate %TAG directive", mark) |
| 1245 |
} |
| 1246 |
} |
| 1247 |
|
| 1248 |
// [Go] I suspect the copy is unnecessary. This was likely done |
| 1249 |
// because there was no way to track ownership of the data. |
| 1250 |
value_copy := yaml_tag_directive_t{ |
| 1251 |
handle: make([]byte, len(value.handle)), |
| 1252 |
prefix: make([]byte, len(value.prefix)), |
| 1253 |
} |
| 1254 |
copy(value_copy.handle, value.handle) |
| 1255 |
copy(value_copy.prefix, value.prefix) |
| 1256 |
parser.tag_directives = append(parser.tag_directives, value_copy) |
| 1257 |
return true |
| 1258 |
} |
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