Mihaela Mihaljevic
cff26b255d
Same-name xsl:attribute-set declarations merge as ordered definitions per 7.1.4, each expanding its used sets before its own attributes with later definitions winning; xsl:copy carries the source element's in-scope namespace nodes per 7.5; the namespace fixup lets a carried attribute prefix shadow an inherited binding unless the element's own name relies on it; the html method minimizes boolean attributes whose value repeats their name; and external DTDs and entities in the stylesheet or source resolve through the transform's document loader. Four unit tests pin the behaviors. Xalan baseline 174 -> 159 (attribset 13 -> 4, copy 12 -> 7).
68 lines
2.9 KiB
Swift
68 lines
2.9 KiB
Swift
extension PureXML.HTML {
|
|
/// A lexical token from the lenient HTML tokenizer.
|
|
enum Token: Equatable, Sendable {
|
|
case startTag(name: String, attributes: [(String, String)], selfClosing: Bool)
|
|
case endTag(name: String)
|
|
case text(String)
|
|
case comment(String)
|
|
case doctype(String)
|
|
|
|
static func == (lhs: Token, rhs: Token) -> Bool {
|
|
switch (lhs, rhs) {
|
|
case let (.startTag(leftName, leftAttributes, leftClosing), .startTag(rightName, rightAttributes, rightClosing)):
|
|
leftName == rightName && leftClosing == rightClosing
|
|
&& leftAttributes.map(\.0) == rightAttributes.map(\.0)
|
|
&& leftAttributes.map(\.1) == rightAttributes.map(\.1)
|
|
case let (.endTag(left), .endTag(right)): left == right
|
|
case let (.text(left), .text(right)): left == right
|
|
case let (.comment(left), .comment(right)): left == right
|
|
case let (.doctype(left), .doctype(right)): left == right
|
|
default: false
|
|
}
|
|
}
|
|
}
|
|
|
|
/// The HTML element categories that drive lenient tree building and
|
|
/// serialization.
|
|
enum Elements {
|
|
/// Void elements: no content and no end tag.
|
|
static let void: Set<String> = [
|
|
"area", "base", "br", "col", "embed", "frame", "hr", "img", "input",
|
|
"link", "meta", "param", "source", "track", "wbr",
|
|
]
|
|
|
|
/// Raw-text elements: their content is taken verbatim up to the matching
|
|
/// end tag, not parsed as markup.
|
|
static let rawText: Set<String> = ["script", "style", "textarea", "title"]
|
|
|
|
/// Boolean attributes, serialized minimized when their value repeats
|
|
/// their name (the html output form).
|
|
static let booleanAttributes: Set<String> = [
|
|
"checked", "selected", "disabled", "readonly", "multiple", "ismap",
|
|
"defer", "declare", "noresize", "nowrap", "noshade", "compact",
|
|
]
|
|
|
|
/// RCDATA elements: like raw-text, but character references in their
|
|
/// content are decoded (`title`, `textarea`). The remaining raw-text
|
|
/// elements (`script`, `style`) take their content with no decoding.
|
|
static let rcdata: Set<String> = ["textarea", "title"]
|
|
|
|
/// For an opening tag (key), the set of currently-open elements it
|
|
/// implicitly closes first (the common optional-end-tag rules).
|
|
static let impliedClose: [String: Set<String>] = [
|
|
"li": ["li"],
|
|
"dt": ["dt", "dd"],
|
|
"dd": ["dt", "dd"],
|
|
"p": ["p"],
|
|
"option": ["option"],
|
|
"optgroup": ["option", "optgroup"],
|
|
"tr": ["tr", "td", "th"],
|
|
"td": ["td", "th"],
|
|
"th": ["td", "th"],
|
|
"thead": ["tbody", "thead", "tfoot"],
|
|
"tbody": ["tbody", "thead", "tfoot"],
|
|
"tfoot": ["tbody", "thead", "tfoot"],
|
|
]
|
|
}
|
|
}
|