Add support PSLR(1) parser generation - #774

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ydah wants to merge 15 commits into

ruby:masterfrom

ydah:pslr_parser

Commits on Jul 8, 2026

pslr: add grammar directives for PSLR(1) lexical specification
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b4259df
pslr: add scanner FSA construction from token patterns
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05b4f5f
pslr: add length precedence resolution tables
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f1e5413
pslr: integrate pseudo-scanner into state computation
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dc88596
pslr: emit pseudo-scanner tables and runtime in generated parsers
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4276e96
pslr: add PSLR reporting, tie-candidate warnings and CLI wiring
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897d366
pslr: switch pseudo-scan runtime to length-delimited input
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ceee1e6
pslr: add conflict witnesses and real %lex-prec usage tracking
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aaca9fa
lac: make lookahead correction configurable via %define parse.lac
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701479b
pslr: use pair-based state compatibility for splitting
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25402b0
pslr: add pure mode where the generated parser owns lexing
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a5158b3
pslr: add {NAME} references, canonical-lr tables and richer reports
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b00f868
pslr: regenerate RBS signatures and fix operator annotations
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1b5cb84
docs: update NEWS for the completed PSLR(1) feature set
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590bee3
ci: fix Ruby 2.5 compatibility and vendored-gem ASCII check
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225fa5c