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gh-95555: Add the CATEGORY_UCD opcode and the simple enumerated properties#153023
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gh-95555: Add the CATEGORY_UCD opcode and the simple enumerated properties#153023serhiy-storchaka wants to merge 1 commit into
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… properties
Introduce the unicodedata capsule used to match \p{...} properties that need
the Unicode Character Database, starting with the simplest tier: the
enumerated properties stored as a single byte in the per-character record --
Bidi_Class (bc), East_Asian_Width (ea), Grapheme_Cluster_Break (gcb) and
Indic_Conjunct_Break (incb).
unicodedata exports the _ucd_re_CAPI capsule (the \N{...} precedent) and
_ucd_re_info(), which lists the property selectors and value names. The new
CATEGORY_UCD opcode packs (negate, property, value) and is matched in C by
sre_category_ucd(). A negated single value is one charset item, so \P{bc=AL}
composes inside a set.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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First of four stacked PRs that complete
\p{...}support with the properties backed by the Unicode Character Database, matched in C through a unicodedata capsule. This PR adds the machinery and the simplest tier: the enumerated properties stored as a single byte in the per-character record —Bidi_Class(bc),East_Asian_Width(ea),Grapheme_Cluster_Break(gcb) andIndic_Conjunct_Break(incb).unicodedata exports the
_ucd_re_CAPIcapsule (the\N{...}precedent) and_ucd_re_info(), which lists the property selectors and value names. The parser resolves a property name and value to a selector and value index; the new CATEGORY_UCD opcode packs (negate, property, value) into one operand and is matched in C bysre_category_ucd(), which compares the index returned by the capsule. A negated single value is one charset item, so\P{bc=AL}composes inside a set.The follow-up PRs add, in order: the numeric and binary properties (ccc, Bidi_Mirrored, Extended_Pictographic), the computed properties (Block, Decomposition_Type, Numeric_Type) and the remaining General_Category values and groups (Ll, Lo, M/P/S) with POSIX punct.
reshould support\p{...}character properties #95555