feat(yaml_parser): parse block sequence #6727
Merged
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Summary
Parse YAML block sequence in the form of
This PR also changes the lexer's tokens emit order, now all
*_END
tokens must be followed by at least one NEWLINE token. This will disallow these tokens from being attached trailing tokens, as the trailing tokens attaching logic doesn't work properly with zero-width token like theseCompact forms of block sequences and mappings are also removed in this PR, as they now longer needed to be explicitly handled by the parser.
Test Plan
Added new tests for in form of YAML files containing both YAML block sequences and block mapping.