Mihaela Mihaljevic
f02561b01d
Surface the parsed <!DOCTYPE> internal subset's <!ELEMENT> declarations from the parser and validate a tree against them. Reimplemented from the DTD content-model spec; no upstream code copied. - DoctypeScanner captures <!ELEMENT name model> declarations; the parser surfaces them as Parsing.DocumentType (via parseWithDocumentType). - Validation.ContentModel + ContentModelParser parse a model string (EMPTY, ANY, (#PCDATA), mixed, and element content with sequence/choice and ?/*/+). - ContentModelMatcher matches the child element-name sequence against a model as a regular language (NFA-position matching). - Validation.DTDSchema.validate reports issues for EMPTY/PCDATA/mixed violations, element content with stray text, and child sequences that do not match. - PureXML.validateAgainstInternalDTD(_:) parses and validates in one call. - ATTLIST validation is out of scope. 9 tests; 70 total.
11 lines
291 B
Swift
11 lines
291 B
Swift
extension PureXML.Validation {
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/// How many times a content-model particle may occur: the DTD `?`, `*`, `+`
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/// suffixes (or exactly once with no suffix).
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enum Occurrence: Equatable {
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case once
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case optional
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case zeroOrMore
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case oneOrMore
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}
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}
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