mirror of
https://github.com/woodpecker-ci/woodpecker.git
synced 2024-12-27 19:00:35 +00:00
1230 lines
35 KiB
Go
1230 lines
35 KiB
Go
/*
|
|
Licensed under the Apache License, Version 2.0 (the "License");
|
|
you may not use this file except in compliance with the License.
|
|
You may obtain a copy of the License at
|
|
|
|
http://www.apache.org/licenses/LICENSE-2.0
|
|
|
|
Unless required by applicable law or agreed to in writing, software
|
|
distributed under the License is distributed on an "AS IS" BASIS,
|
|
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
See the License for the specific language governing permissions and
|
|
limitations under the License.
|
|
*/
|
|
|
|
package candiedyaml
|
|
|
|
import (
|
|
"bytes"
|
|
)
|
|
|
|
/*
|
|
* The parser implements the following grammar:
|
|
*
|
|
* stream ::= STREAM-START implicit_document? explicit_document* STREAM-END
|
|
* implicit_document ::= block_node DOCUMENT-END*
|
|
* explicit_document ::= DIRECTIVE* DOCUMENT-START block_node? DOCUMENT-END*
|
|
* block_node_or_indentless_sequence ::=
|
|
* ALIAS
|
|
* | properties (block_content | indentless_block_sequence)?
|
|
* | block_content
|
|
* | indentless_block_sequence
|
|
* block_node ::= ALIAS
|
|
* | properties block_content?
|
|
* | block_content
|
|
* flow_node ::= ALIAS
|
|
* | properties flow_content?
|
|
* | flow_content
|
|
* properties ::= TAG ANCHOR? | ANCHOR TAG?
|
|
* block_content ::= block_collection | flow_collection | SCALAR
|
|
* flow_content ::= flow_collection | SCALAR
|
|
* block_collection ::= block_sequence | block_mapping
|
|
* flow_collection ::= flow_sequence | flow_mapping
|
|
* block_sequence ::= BLOCK-SEQUENCE-START (BLOCK-ENTRY block_node?)* BLOCK-END
|
|
* indentless_sequence ::= (BLOCK-ENTRY block_node?)+
|
|
* block_mapping ::= BLOCK-MAPPING_START
|
|
* ((KEY block_node_or_indentless_sequence?)?
|
|
* (VALUE block_node_or_indentless_sequence?)?)*
|
|
* BLOCK-END
|
|
* 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?)?
|
|
* 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?)?
|
|
*/
|
|
|
|
/*
|
|
* Peek the next token in the token queue.
|
|
*/
|
|
func peek_token(parser *yaml_parser_t) *yaml_token_t {
|
|
if parser.token_available || yaml_parser_fetch_more_tokens(parser) {
|
|
return &parser.tokens[parser.tokens_head]
|
|
}
|
|
return nil
|
|
}
|
|
|
|
/*
|
|
* Remove the next token from the queue (must be called after peek_token).
|
|
*/
|
|
func skip_token(parser *yaml_parser_t) {
|
|
parser.token_available = false
|
|
parser.tokens_parsed++
|
|
parser.stream_end_produced = parser.tokens[parser.tokens_head].token_type == yaml_STREAM_END_TOKEN
|
|
parser.tokens_head++
|
|
}
|
|
|
|
/*
|
|
* Get the next event.
|
|
*/
|
|
|
|
func yaml_parser_parse(parser *yaml_parser_t, event *yaml_event_t) bool {
|
|
/* Erase the event object. */
|
|
*event = yaml_event_t{}
|
|
|
|
/* No events after the end of the stream or error. */
|
|
|
|
if parser.stream_end_produced || parser.error != yaml_NO_ERROR ||
|
|
parser.state == yaml_PARSE_END_STATE {
|
|
return true
|
|
}
|
|
|
|
/* Generate the next event. */
|
|
|
|
return yaml_parser_state_machine(parser, event)
|
|
}
|
|
|
|
/*
|
|
* Set parser error.
|
|
*/
|
|
|
|
func yaml_parser_set_parser_error(parser *yaml_parser_t,
|
|
problem string, problem_mark YAML_mark_t) bool {
|
|
parser.error = yaml_PARSER_ERROR
|
|
parser.problem = problem
|
|
parser.problem_mark = problem_mark
|
|
|
|
return false
|
|
}
|
|
|
|
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 {
|
|
parser.error = yaml_PARSER_ERROR
|
|
parser.context = context
|
|
parser.context_mark = context_mark
|
|
parser.problem = problem
|
|
parser.problem_mark = problem_mark
|
|
|
|
return false
|
|
}
|
|
|
|
/*
|
|
* State dispatcher.
|
|
*/
|
|
|
|
func yaml_parser_state_machine(parser *yaml_parser_t, event *yaml_event_t) bool {
|
|
switch parser.state {
|
|
case yaml_PARSE_STREAM_START_STATE:
|
|
return yaml_parser_parse_stream_start(parser, event)
|
|
|
|
case yaml_PARSE_IMPLICIT_DOCUMENT_START_STATE:
|
|
return yaml_parser_parse_document_start(parser, event, true)
|
|
|
|
case yaml_PARSE_DOCUMENT_START_STATE:
|
|
return yaml_parser_parse_document_start(parser, event, false)
|
|
|
|
case yaml_PARSE_DOCUMENT_CONTENT_STATE:
|
|
return yaml_parser_parse_document_content(parser, event)
|
|
|
|
case yaml_PARSE_DOCUMENT_END_STATE:
|
|
return yaml_parser_parse_document_end(parser, event)
|
|
|
|
case yaml_PARSE_BLOCK_NODE_STATE:
|
|
return yaml_parser_parse_node(parser, event, true, false)
|
|
|
|
case yaml_PARSE_BLOCK_NODE_OR_INDENTLESS_SEQUENCE_STATE:
|
|
return yaml_parser_parse_node(parser, event, true, true)
|
|
|
|
case yaml_PARSE_FLOW_NODE_STATE:
|
|
return yaml_parser_parse_node(parser, event, false, false)
|
|
|
|
case yaml_PARSE_BLOCK_SEQUENCE_FIRST_ENTRY_STATE:
|
|
return yaml_parser_parse_block_sequence_entry(parser, event, true)
|
|
|
|
case yaml_PARSE_BLOCK_SEQUENCE_ENTRY_STATE:
|
|
return yaml_parser_parse_block_sequence_entry(parser, event, false)
|
|
|
|
case yaml_PARSE_INDENTLESS_SEQUENCE_ENTRY_STATE:
|
|
return yaml_parser_parse_indentless_sequence_entry(parser, event)
|
|
|
|
case yaml_PARSE_BLOCK_MAPPING_FIRST_KEY_STATE:
|
|
return yaml_parser_parse_block_mapping_key(parser, event, true)
|
|
|
|
case yaml_PARSE_BLOCK_MAPPING_KEY_STATE:
|
|
return yaml_parser_parse_block_mapping_key(parser, event, false)
|
|
|
|
case yaml_PARSE_BLOCK_MAPPING_VALUE_STATE:
|
|
return yaml_parser_parse_block_mapping_value(parser, event)
|
|
|
|
case yaml_PARSE_FLOW_SEQUENCE_FIRST_ENTRY_STATE:
|
|
return yaml_parser_parse_flow_sequence_entry(parser, event, true)
|
|
|
|
case yaml_PARSE_FLOW_SEQUENCE_ENTRY_STATE:
|
|
return yaml_parser_parse_flow_sequence_entry(parser, event, false)
|
|
|
|
case yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_KEY_STATE:
|
|
return yaml_parser_parse_flow_sequence_entry_mapping_key(parser, event)
|
|
|
|
case yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_VALUE_STATE:
|
|
return yaml_parser_parse_flow_sequence_entry_mapping_value(parser, event)
|
|
|
|
case yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_END_STATE:
|
|
return yaml_parser_parse_flow_sequence_entry_mapping_end(parser, event)
|
|
|
|
case yaml_PARSE_FLOW_MAPPING_FIRST_KEY_STATE:
|
|
return yaml_parser_parse_flow_mapping_key(parser, event, true)
|
|
|
|
case yaml_PARSE_FLOW_MAPPING_KEY_STATE:
|
|
return yaml_parser_parse_flow_mapping_key(parser, event, false)
|
|
|
|
case yaml_PARSE_FLOW_MAPPING_VALUE_STATE:
|
|
return yaml_parser_parse_flow_mapping_value(parser, event, false)
|
|
|
|
case yaml_PARSE_FLOW_MAPPING_EMPTY_VALUE_STATE:
|
|
return yaml_parser_parse_flow_mapping_value(parser, event, true)
|
|
}
|
|
|
|
panic("invalid parser state")
|
|
}
|
|
|
|
/*
|
|
* Parse the production:
|
|
* stream ::= STREAM-START implicit_document? explicit_document* STREAM-END
|
|
* ************
|
|
*/
|
|
|
|
func yaml_parser_parse_stream_start(parser *yaml_parser_t, event *yaml_event_t) bool {
|
|
token := peek_token(parser)
|
|
if token == nil {
|
|
return false
|
|
}
|
|
|
|
if token.token_type != yaml_STREAM_START_TOKEN {
|
|
return yaml_parser_set_parser_error(parser,
|
|
"did not find expected <stream-start>", token.start_mark)
|
|
}
|
|
|
|
parser.state = yaml_PARSE_IMPLICIT_DOCUMENT_START_STATE
|
|
*event = yaml_event_t{
|
|
event_type: yaml_STREAM_START_EVENT,
|
|
start_mark: token.start_mark,
|
|
end_mark: token.end_mark,
|
|
encoding: token.encoding,
|
|
}
|
|
skip_token(parser)
|
|
|
|
return true
|
|
}
|
|
|
|
/*
|
|
* Parse the productions:
|
|
* implicit_document ::= block_node DOCUMENT-END*
|
|
* *
|
|
* explicit_document ::= DIRECTIVE* DOCUMENT-START block_node? DOCUMENT-END*
|
|
* *************************
|
|
*/
|
|
|
|
func yaml_parser_parse_document_start(parser *yaml_parser_t, event *yaml_event_t,
|
|
implicit bool) bool {
|
|
|
|
token := peek_token(parser)
|
|
if token == nil {
|
|
return false
|
|
}
|
|
|
|
/* Parse extra document end indicators. */
|
|
|
|
if !implicit {
|
|
for token.token_type == yaml_DOCUMENT_END_TOKEN {
|
|
skip_token(parser)
|
|
token = peek_token(parser)
|
|
if token == nil {
|
|
return false
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Parse an implicit document. */
|
|
|
|
if implicit && token.token_type != yaml_VERSION_DIRECTIVE_TOKEN &&
|
|
token.token_type != yaml_TAG_DIRECTIVE_TOKEN &&
|
|
token.token_type != yaml_DOCUMENT_START_TOKEN &&
|
|
token.token_type != yaml_STREAM_END_TOKEN {
|
|
if !yaml_parser_process_directives(parser, nil, nil) {
|
|
return false
|
|
}
|
|
|
|
parser.states = append(parser.states, yaml_PARSE_DOCUMENT_END_STATE)
|
|
parser.state = yaml_PARSE_BLOCK_NODE_STATE
|
|
|
|
*event = yaml_event_t{
|
|
event_type: yaml_DOCUMENT_START_EVENT,
|
|
implicit: true,
|
|
start_mark: token.start_mark,
|
|
end_mark: token.end_mark,
|
|
}
|
|
} else if token.token_type != yaml_STREAM_END_TOKEN {
|
|
/* Parse an explicit document. */
|
|
var version_directive *yaml_version_directive_t
|
|
var tag_directives []yaml_tag_directive_t
|
|
|
|
start_mark := token.start_mark
|
|
if !yaml_parser_process_directives(parser, &version_directive,
|
|
&tag_directives) {
|
|
return false
|
|
}
|
|
token = peek_token(parser)
|
|
if token == nil {
|
|
return false
|
|
}
|
|
if token.token_type != yaml_DOCUMENT_START_TOKEN {
|
|
yaml_parser_set_parser_error(parser,
|
|
"did not find expected <document start>", token.start_mark)
|
|
return false
|
|
}
|
|
|
|
parser.states = append(parser.states, yaml_PARSE_DOCUMENT_END_STATE)
|
|
parser.state = yaml_PARSE_DOCUMENT_CONTENT_STATE
|
|
|
|
end_mark := token.end_mark
|
|
|
|
*event = yaml_event_t{
|
|
event_type: yaml_DOCUMENT_START_EVENT,
|
|
start_mark: start_mark,
|
|
end_mark: end_mark,
|
|
version_directive: version_directive,
|
|
tag_directives: tag_directives,
|
|
implicit: false,
|
|
}
|
|
skip_token(parser)
|
|
} else {
|
|
/* Parse the stream end. */
|
|
parser.state = yaml_PARSE_END_STATE
|
|
|
|
*event = yaml_event_t{
|
|
event_type: yaml_STREAM_END_EVENT,
|
|
start_mark: token.start_mark,
|
|
end_mark: token.end_mark,
|
|
}
|
|
skip_token(parser)
|
|
}
|
|
return true
|
|
}
|
|
|
|
/*
|
|
* Parse the productions:
|
|
* explicit_document ::= DIRECTIVE* DOCUMENT-START block_node? DOCUMENT-END*
|
|
* ***********
|
|
*/
|
|
|
|
func yaml_parser_parse_document_content(parser *yaml_parser_t, event *yaml_event_t) bool {
|
|
token := peek_token(parser)
|
|
if token == nil {
|
|
return false
|
|
}
|
|
|
|
if token.token_type == yaml_VERSION_DIRECTIVE_TOKEN ||
|
|
token.token_type == yaml_TAG_DIRECTIVE_TOKEN ||
|
|
token.token_type == yaml_DOCUMENT_START_TOKEN ||
|
|
token.token_type == yaml_DOCUMENT_END_TOKEN ||
|
|
token.token_type == yaml_STREAM_END_TOKEN {
|
|
parser.state = parser.states[len(parser.states)-1]
|
|
parser.states = parser.states[:len(parser.states)-1]
|
|
return yaml_parser_process_empty_scalar(parser, event,
|
|
token.start_mark)
|
|
} else {
|
|
return yaml_parser_parse_node(parser, event, true, false)
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Parse the productions:
|
|
* implicit_document ::= block_node DOCUMENT-END*
|
|
* *************
|
|
* explicit_document ::= DIRECTIVE* DOCUMENT-START block_node? DOCUMENT-END*
|
|
* *************
|
|
*/
|
|
|
|
func yaml_parser_parse_document_end(parser *yaml_parser_t, event *yaml_event_t) bool {
|
|
implicit := true
|
|
|
|
token := peek_token(parser)
|
|
if token == nil {
|
|
return false
|
|
}
|
|
|
|
start_mark, end_mark := token.start_mark, token.start_mark
|
|
|
|
if token.token_type == yaml_DOCUMENT_END_TOKEN {
|
|
end_mark = token.end_mark
|
|
skip_token(parser)
|
|
implicit = false
|
|
}
|
|
|
|
parser.tag_directives = parser.tag_directives[:0]
|
|
|
|
parser.state = yaml_PARSE_DOCUMENT_START_STATE
|
|
*event = yaml_event_t{
|
|
event_type: yaml_DOCUMENT_END_EVENT,
|
|
start_mark: start_mark,
|
|
end_mark: end_mark,
|
|
implicit: implicit,
|
|
}
|
|
|
|
return true
|
|
}
|
|
|
|
/*
|
|
* Parse the productions:
|
|
* block_node_or_indentless_sequence ::=
|
|
* ALIAS
|
|
* *****
|
|
* | properties (block_content | indentless_block_sequence)?
|
|
* ********** *
|
|
* | block_content | indentless_block_sequence
|
|
* *
|
|
* block_node ::= ALIAS
|
|
* *****
|
|
* | properties block_content?
|
|
* ********** *
|
|
* | block_content
|
|
* *
|
|
* flow_node ::= ALIAS
|
|
* *****
|
|
* | properties flow_content?
|
|
* ********** *
|
|
* | flow_content
|
|
* *
|
|
* properties ::= TAG ANCHOR? | ANCHOR TAG?
|
|
* *************************
|
|
* block_content ::= block_collection | flow_collection | SCALAR
|
|
* ******
|
|
* flow_content ::= flow_collection | SCALAR
|
|
* ******
|
|
*/
|
|
|
|
func yaml_parser_parse_node(parser *yaml_parser_t, event *yaml_event_t,
|
|
block bool, indentless_sequence bool) bool {
|
|
|
|
token := peek_token(parser)
|
|
if token == nil {
|
|
return false
|
|
}
|
|
|
|
if token.token_type == yaml_ALIAS_TOKEN {
|
|
parser.state = parser.states[len(parser.states)-1]
|
|
parser.states = parser.states[:len(parser.states)-1]
|
|
|
|
*event = yaml_event_t{
|
|
event_type: yaml_ALIAS_EVENT,
|
|
start_mark: token.start_mark,
|
|
end_mark: token.end_mark,
|
|
anchor: token.value,
|
|
}
|
|
skip_token(parser)
|
|
return true
|
|
} else {
|
|
start_mark, end_mark := token.start_mark, token.start_mark
|
|
|
|
var tag_handle []byte
|
|
var tag_suffix, anchor []byte
|
|
var tag_mark YAML_mark_t
|
|
if token.token_type == yaml_ANCHOR_TOKEN {
|
|
anchor = token.value
|
|
start_mark = token.start_mark
|
|
end_mark = token.end_mark
|
|
skip_token(parser)
|
|
token = peek_token(parser)
|
|
if token == nil {
|
|
return false
|
|
}
|
|
if token.token_type == yaml_TAG_TOKEN {
|
|
tag_handle = token.value
|
|
tag_suffix = token.suffix
|
|
tag_mark = token.start_mark
|
|
end_mark = token.end_mark
|
|
skip_token(parser)
|
|
token = peek_token(parser)
|
|
if token == nil {
|
|
return false
|
|
}
|
|
}
|
|
} else if token.token_type == yaml_TAG_TOKEN {
|
|
tag_handle = token.value
|
|
tag_suffix = token.suffix
|
|
start_mark, tag_mark = token.start_mark, token.start_mark
|
|
end_mark = token.end_mark
|
|
skip_token(parser)
|
|
token = peek_token(parser)
|
|
if token == nil {
|
|
return false
|
|
}
|
|
if token.token_type == yaml_ANCHOR_TOKEN {
|
|
anchor = token.value
|
|
end_mark = token.end_mark
|
|
skip_token(parser)
|
|
token = peek_token(parser)
|
|
if token == nil {
|
|
return false
|
|
}
|
|
|
|
}
|
|
}
|
|
|
|
var tag []byte
|
|
if tag_handle != nil {
|
|
if len(tag_handle) == 0 {
|
|
tag = tag_suffix
|
|
tag_handle = nil
|
|
tag_suffix = nil
|
|
} else {
|
|
for i := range parser.tag_directives {
|
|
tag_directive := &parser.tag_directives[i]
|
|
if bytes.Equal(tag_directive.handle, tag_handle) {
|
|
tag = append([]byte(nil), tag_directive.prefix...)
|
|
tag = append(tag, tag_suffix...)
|
|
tag_handle = nil
|
|
tag_suffix = nil
|
|
break
|
|
}
|
|
}
|
|
if len(tag) == 0 {
|
|
yaml_parser_set_parser_error_context(parser,
|
|
"while parsing a node", start_mark,
|
|
"found undefined tag handle", tag_mark)
|
|
return false
|
|
}
|
|
}
|
|
}
|
|
|
|
implicit := len(tag) == 0
|
|
if indentless_sequence && token.token_type == yaml_BLOCK_ENTRY_TOKEN {
|
|
end_mark = token.end_mark
|
|
parser.state = yaml_PARSE_INDENTLESS_SEQUENCE_ENTRY_STATE
|
|
|
|
*event = yaml_event_t{
|
|
event_type: yaml_SEQUENCE_START_EVENT,
|
|
start_mark: start_mark,
|
|
end_mark: end_mark,
|
|
anchor: anchor,
|
|
tag: tag,
|
|
implicit: implicit,
|
|
style: yaml_style_t(yaml_BLOCK_SEQUENCE_STYLE),
|
|
}
|
|
|
|
return true
|
|
} else {
|
|
if token.token_type == yaml_SCALAR_TOKEN {
|
|
plain_implicit := false
|
|
quoted_implicit := false
|
|
end_mark = token.end_mark
|
|
if (token.style == yaml_PLAIN_SCALAR_STYLE && len(tag) == 0) ||
|
|
(len(tag) == 1 && tag[0] == '!') {
|
|
plain_implicit = true
|
|
} else if len(tag) == 0 {
|
|
quoted_implicit = true
|
|
}
|
|
|
|
parser.state = parser.states[len(parser.states)-1]
|
|
parser.states = parser.states[:len(parser.states)-1]
|
|
|
|
*event = yaml_event_t{
|
|
event_type: yaml_SCALAR_EVENT,
|
|
start_mark: start_mark,
|
|
end_mark: end_mark,
|
|
anchor: anchor,
|
|
tag: tag,
|
|
value: token.value,
|
|
implicit: plain_implicit,
|
|
quoted_implicit: quoted_implicit,
|
|
style: yaml_style_t(token.style),
|
|
}
|
|
|
|
skip_token(parser)
|
|
return true
|
|
} else if token.token_type == yaml_FLOW_SEQUENCE_START_TOKEN {
|
|
end_mark = token.end_mark
|
|
parser.state = yaml_PARSE_FLOW_SEQUENCE_FIRST_ENTRY_STATE
|
|
|
|
*event = yaml_event_t{
|
|
event_type: yaml_SEQUENCE_START_EVENT,
|
|
start_mark: start_mark,
|
|
end_mark: end_mark,
|
|
anchor: anchor,
|
|
tag: tag,
|
|
implicit: implicit,
|
|
style: yaml_style_t(yaml_FLOW_SEQUENCE_STYLE),
|
|
}
|
|
|
|
return true
|
|
} else if token.token_type == yaml_FLOW_MAPPING_START_TOKEN {
|
|
end_mark = token.end_mark
|
|
parser.state = yaml_PARSE_FLOW_MAPPING_FIRST_KEY_STATE
|
|
|
|
*event = yaml_event_t{
|
|
event_type: yaml_MAPPING_START_EVENT,
|
|
start_mark: start_mark,
|
|
end_mark: end_mark,
|
|
anchor: anchor,
|
|
tag: tag,
|
|
implicit: implicit,
|
|
style: yaml_style_t(yaml_FLOW_MAPPING_STYLE),
|
|
}
|
|
|
|
return true
|
|
} else if block && token.token_type == yaml_BLOCK_SEQUENCE_START_TOKEN {
|
|
end_mark = token.end_mark
|
|
parser.state = yaml_PARSE_BLOCK_SEQUENCE_FIRST_ENTRY_STATE
|
|
|
|
*event = yaml_event_t{
|
|
event_type: yaml_SEQUENCE_START_EVENT,
|
|
start_mark: start_mark,
|
|
end_mark: end_mark,
|
|
anchor: anchor,
|
|
tag: tag,
|
|
implicit: implicit,
|
|
style: yaml_style_t(yaml_BLOCK_SEQUENCE_STYLE),
|
|
}
|
|
|
|
return true
|
|
} else if block && token.token_type == yaml_BLOCK_MAPPING_START_TOKEN {
|
|
end_mark = token.end_mark
|
|
parser.state = yaml_PARSE_BLOCK_MAPPING_FIRST_KEY_STATE
|
|
|
|
*event = yaml_event_t{
|
|
event_type: yaml_MAPPING_START_EVENT,
|
|
start_mark: start_mark,
|
|
end_mark: end_mark,
|
|
anchor: anchor,
|
|
tag: tag,
|
|
implicit: implicit,
|
|
style: yaml_style_t(yaml_BLOCK_MAPPING_STYLE),
|
|
}
|
|
return true
|
|
} else if len(anchor) > 0 || len(tag) > 0 {
|
|
|
|
parser.state = parser.states[len(parser.states)-1]
|
|
parser.states = parser.states[:len(parser.states)-1]
|
|
|
|
*event = yaml_event_t{
|
|
event_type: yaml_SCALAR_EVENT,
|
|
start_mark: start_mark,
|
|
end_mark: end_mark,
|
|
anchor: anchor,
|
|
tag: tag,
|
|
implicit: implicit,
|
|
quoted_implicit: false,
|
|
style: yaml_style_t(yaml_PLAIN_SCALAR_STYLE),
|
|
}
|
|
return true
|
|
} else {
|
|
msg := "while parsing a block node"
|
|
if !block {
|
|
msg = "while parsing a flow node"
|
|
}
|
|
yaml_parser_set_parser_error_context(parser, msg, start_mark,
|
|
"did not find expected node content", token.start_mark)
|
|
return false
|
|
}
|
|
}
|
|
}
|
|
|
|
return false
|
|
}
|
|
|
|
/*
|
|
* Parse the productions:
|
|
* block_sequence ::= BLOCK-SEQUENCE-START (BLOCK-ENTRY block_node?)* BLOCK-END
|
|
* ******************** *********** * *********
|
|
*/
|
|
|
|
func yaml_parser_parse_block_sequence_entry(parser *yaml_parser_t,
|
|
event *yaml_event_t, first bool) bool {
|
|
if first {
|
|
token := peek_token(parser)
|
|
parser.marks = append(parser.marks, token.start_mark)
|
|
skip_token(parser)
|
|
}
|
|
|
|
token := peek_token(parser)
|
|
if token == nil {
|
|
return false
|
|
}
|
|
|
|
if token.token_type == yaml_BLOCK_ENTRY_TOKEN {
|
|
mark := token.end_mark
|
|
skip_token(parser)
|
|
token = peek_token(parser)
|
|
if token == nil {
|
|
return false
|
|
}
|
|
if token.token_type != yaml_BLOCK_ENTRY_TOKEN &&
|
|
token.token_type != yaml_BLOCK_END_TOKEN {
|
|
parser.states = append(parser.states, yaml_PARSE_BLOCK_SEQUENCE_ENTRY_STATE)
|
|
return yaml_parser_parse_node(parser, event, true, false)
|
|
} else {
|
|
parser.state = yaml_PARSE_BLOCK_SEQUENCE_ENTRY_STATE
|
|
return yaml_parser_process_empty_scalar(parser, event, mark)
|
|
}
|
|
} else if token.token_type == yaml_BLOCK_END_TOKEN {
|
|
parser.state = parser.states[len(parser.states)-1]
|
|
parser.states = parser.states[:len(parser.states)-1]
|
|
parser.marks = parser.marks[:len(parser.marks)-1]
|
|
|
|
*event = yaml_event_t{
|
|
event_type: yaml_SEQUENCE_END_EVENT,
|
|
start_mark: token.start_mark,
|
|
end_mark: token.end_mark,
|
|
}
|
|
|
|
skip_token(parser)
|
|
return true
|
|
} else {
|
|
mark := parser.marks[len(parser.marks)-1]
|
|
parser.marks = parser.marks[:len(parser.marks)-1]
|
|
|
|
return yaml_parser_set_parser_error_context(parser,
|
|
"while parsing a block collection", mark,
|
|
"did not find expected '-' indicator", token.start_mark)
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Parse the productions:
|
|
* indentless_sequence ::= (BLOCK-ENTRY block_node?)+
|
|
* *********** *
|
|
*/
|
|
|
|
func yaml_parser_parse_indentless_sequence_entry(parser *yaml_parser_t,
|
|
event *yaml_event_t) bool {
|
|
token := peek_token(parser)
|
|
if token == nil {
|
|
return false
|
|
}
|
|
|
|
if token.token_type == yaml_BLOCK_ENTRY_TOKEN {
|
|
mark := token.end_mark
|
|
skip_token(parser)
|
|
token = peek_token(parser)
|
|
if token == nil {
|
|
return false
|
|
}
|
|
if token.token_type != yaml_BLOCK_ENTRY_TOKEN &&
|
|
token.token_type != yaml_KEY_TOKEN &&
|
|
token.token_type != yaml_VALUE_TOKEN &&
|
|
token.token_type != yaml_BLOCK_END_TOKEN {
|
|
parser.states = append(parser.states, yaml_PARSE_INDENTLESS_SEQUENCE_ENTRY_STATE)
|
|
return yaml_parser_parse_node(parser, event, true, false)
|
|
} else {
|
|
parser.state = yaml_PARSE_INDENTLESS_SEQUENCE_ENTRY_STATE
|
|
return yaml_parser_process_empty_scalar(parser, event, mark)
|
|
}
|
|
} else {
|
|
parser.state = parser.states[len(parser.states)-1]
|
|
parser.states = parser.states[:len(parser.states)-1]
|
|
|
|
*event = yaml_event_t{
|
|
event_type: yaml_SEQUENCE_END_EVENT,
|
|
start_mark: token.start_mark,
|
|
end_mark: token.start_mark,
|
|
}
|
|
return true
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Parse the productions:
|
|
* block_mapping ::= BLOCK-MAPPING_START
|
|
* *******************
|
|
* ((KEY block_node_or_indentless_sequence?)?
|
|
* *** *
|
|
* (VALUE block_node_or_indentless_sequence?)?)*
|
|
*
|
|
* BLOCK-END
|
|
* *********
|
|
*/
|
|
|
|
func yaml_parser_parse_block_mapping_key(parser *yaml_parser_t,
|
|
event *yaml_event_t, first bool) bool {
|
|
if first {
|
|
token := peek_token(parser)
|
|
parser.marks = append(parser.marks, token.start_mark)
|
|
skip_token(parser)
|
|
}
|
|
|
|
token := peek_token(parser)
|
|
if token == nil {
|
|
return false
|
|
}
|
|
|
|
if token.token_type == yaml_KEY_TOKEN {
|
|
mark := token.end_mark
|
|
skip_token(parser)
|
|
token = peek_token(parser)
|
|
if token == nil {
|
|
return false
|
|
}
|
|
if token.token_type != yaml_KEY_TOKEN &&
|
|
token.token_type != yaml_VALUE_TOKEN &&
|
|
token.token_type != yaml_BLOCK_END_TOKEN {
|
|
parser.states = append(parser.states, yaml_PARSE_BLOCK_MAPPING_VALUE_STATE)
|
|
return yaml_parser_parse_node(parser, event, true, true)
|
|
} else {
|
|
parser.state = yaml_PARSE_BLOCK_MAPPING_VALUE_STATE
|
|
return yaml_parser_process_empty_scalar(parser, event, mark)
|
|
}
|
|
} else if token.token_type == yaml_BLOCK_END_TOKEN {
|
|
parser.state = parser.states[len(parser.states)-1]
|
|
parser.states = parser.states[:len(parser.states)-1]
|
|
parser.marks = parser.marks[:len(parser.marks)-1]
|
|
*event = yaml_event_t{
|
|
event_type: yaml_MAPPING_END_EVENT,
|
|
start_mark: token.start_mark,
|
|
end_mark: token.end_mark,
|
|
}
|
|
skip_token(parser)
|
|
return true
|
|
} else {
|
|
mark := parser.marks[len(parser.marks)-1]
|
|
parser.marks = parser.marks[:len(parser.marks)-1]
|
|
|
|
return yaml_parser_set_parser_error_context(parser,
|
|
"while parsing a block mapping", mark,
|
|
"did not find expected key", token.start_mark)
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Parse the productions:
|
|
* block_mapping ::= BLOCK-MAPPING_START
|
|
*
|
|
* ((KEY block_node_or_indentless_sequence?)?
|
|
*
|
|
* (VALUE block_node_or_indentless_sequence?)?)*
|
|
* ***** *
|
|
* BLOCK-END
|
|
*
|
|
*/
|
|
|
|
func yaml_parser_parse_block_mapping_value(parser *yaml_parser_t,
|
|
event *yaml_event_t) bool {
|
|
token := peek_token(parser)
|
|
if token == nil {
|
|
return false
|
|
}
|
|
|
|
if token.token_type == yaml_VALUE_TOKEN {
|
|
mark := token.end_mark
|
|
skip_token(parser)
|
|
token = peek_token(parser)
|
|
if token == nil {
|
|
return false
|
|
}
|
|
if token.token_type != yaml_KEY_TOKEN &&
|
|
token.token_type != yaml_VALUE_TOKEN &&
|
|
token.token_type != yaml_BLOCK_END_TOKEN {
|
|
parser.states = append(parser.states, yaml_PARSE_BLOCK_MAPPING_KEY_STATE)
|
|
return yaml_parser_parse_node(parser, event, true, true)
|
|
} else {
|
|
parser.state = yaml_PARSE_BLOCK_MAPPING_KEY_STATE
|
|
return yaml_parser_process_empty_scalar(parser, event, mark)
|
|
}
|
|
} else {
|
|
parser.state = yaml_PARSE_BLOCK_MAPPING_KEY_STATE
|
|
return yaml_parser_process_empty_scalar(parser, event, token.start_mark)
|
|
}
|
|
}
|
|
|
|
/*
|
|
* 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?)?
|
|
* *
|
|
*/
|
|
|
|
func yaml_parser_parse_flow_sequence_entry(parser *yaml_parser_t,
|
|
event *yaml_event_t, first bool) bool {
|
|
if first {
|
|
token := peek_token(parser)
|
|
parser.marks = append(parser.marks, token.start_mark)
|
|
skip_token(parser)
|
|
}
|
|
|
|
token := peek_token(parser)
|
|
if token == nil {
|
|
return false
|
|
}
|
|
|
|
if token.token_type != yaml_FLOW_SEQUENCE_END_TOKEN {
|
|
if !first {
|
|
if token.token_type == yaml_FLOW_ENTRY_TOKEN {
|
|
skip_token(parser)
|
|
token = peek_token(parser)
|
|
if token == nil {
|
|
return false
|
|
}
|
|
} else {
|
|
mark := parser.marks[len(parser.marks)-1]
|
|
parser.marks = parser.marks[:len(parser.marks)-1]
|
|
|
|
return yaml_parser_set_parser_error_context(parser,
|
|
"while parsing a flow sequence", mark,
|
|
"did not find expected ',' or ']'", token.start_mark)
|
|
}
|
|
}
|
|
|
|
if token.token_type == yaml_KEY_TOKEN {
|
|
parser.state = yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_KEY_STATE
|
|
*event = yaml_event_t{
|
|
event_type: yaml_MAPPING_START_EVENT,
|
|
start_mark: token.start_mark,
|
|
end_mark: token.end_mark,
|
|
implicit: true,
|
|
style: yaml_style_t(yaml_FLOW_MAPPING_STYLE),
|
|
}
|
|
|
|
skip_token(parser)
|
|
return true
|
|
} else if token.token_type != yaml_FLOW_SEQUENCE_END_TOKEN {
|
|
parser.states = append(parser.states, yaml_PARSE_FLOW_SEQUENCE_ENTRY_STATE)
|
|
return yaml_parser_parse_node(parser, event, false, false)
|
|
}
|
|
}
|
|
|
|
parser.state = parser.states[len(parser.states)-1]
|
|
parser.states = parser.states[:len(parser.states)-1]
|
|
parser.marks = parser.marks[:len(parser.marks)-1]
|
|
|
|
*event = yaml_event_t{
|
|
event_type: yaml_SEQUENCE_END_EVENT,
|
|
start_mark: token.start_mark,
|
|
end_mark: token.end_mark,
|
|
}
|
|
|
|
skip_token(parser)
|
|
return true
|
|
}
|
|
|
|
/*
|
|
* Parse the productions:
|
|
* flow_sequence_entry ::= flow_node | KEY flow_node? (VALUE flow_node?)?
|
|
* *** *
|
|
*/
|
|
|
|
func yaml_parser_parse_flow_sequence_entry_mapping_key(parser *yaml_parser_t,
|
|
event *yaml_event_t) bool {
|
|
token := peek_token(parser)
|
|
if token == nil {
|
|
return false
|
|
}
|
|
|
|
if token.token_type != yaml_VALUE_TOKEN &&
|
|
token.token_type != yaml_FLOW_ENTRY_TOKEN &&
|
|
token.token_type != yaml_FLOW_SEQUENCE_END_TOKEN {
|
|
parser.states = append(parser.states, yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_VALUE_STATE)
|
|
return yaml_parser_parse_node(parser, event, false, false)
|
|
} else {
|
|
mark := token.end_mark
|
|
skip_token(parser)
|
|
parser.state = yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_VALUE_STATE
|
|
return yaml_parser_process_empty_scalar(parser, event, mark)
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Parse the productions:
|
|
* flow_sequence_entry ::= flow_node | KEY flow_node? (VALUE flow_node?)?
|
|
* ***** *
|
|
*/
|
|
|
|
func yaml_parser_parse_flow_sequence_entry_mapping_value(parser *yaml_parser_t,
|
|
event *yaml_event_t) bool {
|
|
token := peek_token(parser)
|
|
if token == nil {
|
|
return false
|
|
}
|
|
|
|
if token.token_type == yaml_VALUE_TOKEN {
|
|
skip_token(parser)
|
|
token = peek_token(parser)
|
|
if token == nil {
|
|
return false
|
|
}
|
|
if token.token_type != yaml_FLOW_ENTRY_TOKEN &&
|
|
token.token_type != yaml_FLOW_SEQUENCE_END_TOKEN {
|
|
parser.states = append(parser.states, yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_END_STATE)
|
|
return yaml_parser_parse_node(parser, event, false, false)
|
|
}
|
|
}
|
|
parser.state = yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_END_STATE
|
|
return yaml_parser_process_empty_scalar(parser, event, token.start_mark)
|
|
}
|
|
|
|
/*
|
|
* Parse the productions:
|
|
* flow_sequence_entry ::= flow_node | KEY flow_node? (VALUE flow_node?)?
|
|
* *
|
|
*/
|
|
|
|
func yaml_parser_parse_flow_sequence_entry_mapping_end(parser *yaml_parser_t,
|
|
event *yaml_event_t) bool {
|
|
token := peek_token(parser)
|
|
if token == nil {
|
|
return false
|
|
}
|
|
|
|
parser.state = yaml_PARSE_FLOW_SEQUENCE_ENTRY_STATE
|
|
*event = yaml_event_t{
|
|
event_type: yaml_MAPPING_END_EVENT,
|
|
start_mark: token.start_mark,
|
|
end_mark: token.start_mark,
|
|
}
|
|
|
|
return true
|
|
}
|
|
|
|
/*
|
|
* 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?)?
|
|
* * *** *
|
|
*/
|
|
|
|
func yaml_parser_parse_flow_mapping_key(parser *yaml_parser_t,
|
|
event *yaml_event_t, first bool) bool {
|
|
if first {
|
|
token := peek_token(parser)
|
|
parser.marks = append(parser.marks, token.start_mark)
|
|
skip_token(parser)
|
|
}
|
|
|
|
token := peek_token(parser)
|
|
if token == nil {
|
|
return false
|
|
}
|
|
|
|
if token.token_type != yaml_FLOW_MAPPING_END_TOKEN {
|
|
if !first {
|
|
if token.token_type == yaml_FLOW_ENTRY_TOKEN {
|
|
skip_token(parser)
|
|
token = peek_token(parser)
|
|
if token == nil {
|
|
return false
|
|
}
|
|
} else {
|
|
mark := parser.marks[len(parser.marks)-1]
|
|
parser.marks = parser.marks[:len(parser.marks)-1]
|
|
|
|
return yaml_parser_set_parser_error_context(parser,
|
|
"while parsing a flow mapping", mark,
|
|
"did not find expected ',' or '}'", token.start_mark)
|
|
}
|
|
}
|
|
|
|
if token.token_type == yaml_KEY_TOKEN {
|
|
skip_token(parser)
|
|
token = peek_token(parser)
|
|
if token == nil {
|
|
return false
|
|
}
|
|
if token.token_type != yaml_VALUE_TOKEN &&
|
|
token.token_type != yaml_FLOW_ENTRY_TOKEN &&
|
|
token.token_type != yaml_FLOW_MAPPING_END_TOKEN {
|
|
parser.states = append(parser.states, yaml_PARSE_FLOW_MAPPING_VALUE_STATE)
|
|
return yaml_parser_parse_node(parser, event, false, false)
|
|
} else {
|
|
parser.state = yaml_PARSE_FLOW_MAPPING_VALUE_STATE
|
|
return yaml_parser_process_empty_scalar(parser, event,
|
|
token.start_mark)
|
|
}
|
|
} else if token.token_type != yaml_FLOW_MAPPING_END_TOKEN {
|
|
parser.states = append(parser.states, yaml_PARSE_FLOW_MAPPING_EMPTY_VALUE_STATE)
|
|
return yaml_parser_parse_node(parser, event, false, false)
|
|
}
|
|
}
|
|
|
|
parser.state = parser.states[len(parser.states)-1]
|
|
parser.states = parser.states[:len(parser.states)-1]
|
|
parser.marks = parser.marks[:len(parser.marks)-1]
|
|
*event = yaml_event_t{
|
|
event_type: yaml_MAPPING_END_EVENT,
|
|
start_mark: token.start_mark,
|
|
end_mark: token.end_mark,
|
|
}
|
|
|
|
skip_token(parser)
|
|
return true
|
|
}
|
|
|
|
/*
|
|
* Parse the productions:
|
|
* flow_mapping_entry ::= flow_node | KEY flow_node? (VALUE flow_node?)?
|
|
* * ***** *
|
|
*/
|
|
|
|
func yaml_parser_parse_flow_mapping_value(parser *yaml_parser_t,
|
|
event *yaml_event_t, empty bool) bool {
|
|
token := peek_token(parser)
|
|
if token == nil {
|
|
return false
|
|
}
|
|
|
|
if empty {
|
|
parser.state = yaml_PARSE_FLOW_MAPPING_KEY_STATE
|
|
return yaml_parser_process_empty_scalar(parser, event,
|
|
token.start_mark)
|
|
}
|
|
|
|
if token.token_type == yaml_VALUE_TOKEN {
|
|
skip_token(parser)
|
|
token = peek_token(parser)
|
|
if token == nil {
|
|
return false
|
|
}
|
|
if token.token_type != yaml_FLOW_ENTRY_TOKEN &&
|
|
token.token_type != yaml_FLOW_MAPPING_END_TOKEN {
|
|
parser.states = append(parser.states, yaml_PARSE_FLOW_MAPPING_KEY_STATE)
|
|
return yaml_parser_parse_node(parser, event, false, false)
|
|
}
|
|
}
|
|
|
|
parser.state = yaml_PARSE_FLOW_MAPPING_KEY_STATE
|
|
return yaml_parser_process_empty_scalar(parser, event, token.start_mark)
|
|
}
|
|
|
|
/*
|
|
* Generate an empty scalar event.
|
|
*/
|
|
|
|
func yaml_parser_process_empty_scalar(parser *yaml_parser_t, event *yaml_event_t,
|
|
mark YAML_mark_t) bool {
|
|
*event = yaml_event_t{
|
|
event_type: yaml_SCALAR_EVENT,
|
|
start_mark: mark,
|
|
end_mark: mark,
|
|
value: nil,
|
|
implicit: true,
|
|
style: yaml_style_t(yaml_PLAIN_SCALAR_STYLE),
|
|
}
|
|
|
|
return true
|
|
}
|
|
|
|
/*
|
|
* Parse directives.
|
|
*/
|
|
|
|
func yaml_parser_process_directives(parser *yaml_parser_t,
|
|
version_directive_ref **yaml_version_directive_t,
|
|
tag_directives_ref *[]yaml_tag_directive_t) bool {
|
|
|
|
token := peek_token(parser)
|
|
if token == nil {
|
|
return false
|
|
}
|
|
|
|
var version_directive *yaml_version_directive_t
|
|
var tag_directives []yaml_tag_directive_t
|
|
|
|
for token.token_type == yaml_VERSION_DIRECTIVE_TOKEN ||
|
|
token.token_type == yaml_TAG_DIRECTIVE_TOKEN {
|
|
if token.token_type == yaml_VERSION_DIRECTIVE_TOKEN {
|
|
if version_directive != nil {
|
|
yaml_parser_set_parser_error(parser,
|
|
"found duplicate %YAML directive", token.start_mark)
|
|
return false
|
|
}
|
|
if token.major != 1 ||
|
|
token.minor != 1 {
|
|
yaml_parser_set_parser_error(parser,
|
|
"found incompatible YAML document", token.start_mark)
|
|
return false
|
|
}
|
|
version_directive = &yaml_version_directive_t{
|
|
major: token.major,
|
|
minor: token.minor,
|
|
}
|
|
} else if token.token_type == yaml_TAG_DIRECTIVE_TOKEN {
|
|
value := yaml_tag_directive_t{
|
|
handle: token.value,
|
|
prefix: token.prefix,
|
|
}
|
|
|
|
if !yaml_parser_append_tag_directive(parser, value, false,
|
|
token.start_mark) {
|
|
return false
|
|
}
|
|
tag_directives = append(tag_directives, value)
|
|
}
|
|
|
|
skip_token(parser)
|
|
token := peek_token(parser)
|
|
if token == nil {
|
|
return false
|
|
}
|
|
}
|
|
|
|
for i := range default_tag_directives {
|
|
if !yaml_parser_append_tag_directive(parser, default_tag_directives[i], true, token.start_mark) {
|
|
return false
|
|
}
|
|
}
|
|
|
|
if version_directive_ref != nil {
|
|
*version_directive_ref = version_directive
|
|
}
|
|
if tag_directives_ref != nil {
|
|
*tag_directives_ref = tag_directives
|
|
}
|
|
|
|
return true
|
|
}
|
|
|
|
/*
|
|
* Append a tag directive to the directives stack.
|
|
*/
|
|
|
|
func yaml_parser_append_tag_directive(parser *yaml_parser_t,
|
|
value yaml_tag_directive_t, allow_duplicates bool, mark YAML_mark_t) bool {
|
|
for i := range parser.tag_directives {
|
|
tag := &parser.tag_directives[i]
|
|
if bytes.Equal(value.handle, tag.handle) {
|
|
if allow_duplicates {
|
|
return true
|
|
}
|
|
return yaml_parser_set_parser_error(parser, "found duplicate %TAG directive", mark)
|
|
}
|
|
}
|
|
|
|
parser.tag_directives = append(parser.tag_directives, value)
|
|
return true
|
|
}
|