Mihaela Mihaljevic
708390242c
Root Swift package mirroring PureYAML's structure, rules, and verification gates. Includes the XML node model (Node, Element, Attribute, QualifiedName), a working emitter (Serializer) with escaping and pretty/compact options, and structural validation. The parser surface is stable; parse() raises notImplemented until the scanner lands, pinned by a test. - dependency-free, namespaced under PureXML - portability and style gates carried over (style, namespacing, forbidden patterns, swiftformat, swiftlint, linux, wasm, windows CI) - 11 tests passing
59 lines
2.2 KiB
Swift
59 lines
2.2 KiB
Swift
public extension PureXML.Validation {
|
|
/// Path-aware validation over a parsed XML tree.
|
|
///
|
|
/// The default validator checks structural rules that do not depend on a
|
|
/// schema: an element must not declare the same attribute name twice. Schema
|
|
/// (DTD, XSD, RELAX NG) validation is intentionally out of scope for the
|
|
/// library target and is layered on by callers.
|
|
struct Validator: Sendable {
|
|
public init() {}
|
|
|
|
/// Collects validation issues for a node tree.
|
|
public func collect(_ node: PureXML.Model.Node) -> [Issue] {
|
|
var issues: [Issue] = []
|
|
walk(node, into: &issues)
|
|
return issues
|
|
}
|
|
|
|
/// Validates a node tree, throwing the first error-severity issue.
|
|
@discardableResult
|
|
public func validate(_ node: PureXML.Model.Node, strict: Bool = true) throws -> [Issue] {
|
|
let issues = collect(node)
|
|
if let error = issues.first(where: { $0.severity == .error }) {
|
|
throw error
|
|
}
|
|
if strict, let warning = issues.first(where: { $0.severity == .warning }) {
|
|
throw warning
|
|
}
|
|
return issues
|
|
}
|
|
|
|
private func walk(_ node: PureXML.Model.Node, into issues: inout [Issue]) {
|
|
switch node {
|
|
case let .document(children):
|
|
for child in children {
|
|
walk(child, into: &issues)
|
|
}
|
|
case let .element(element):
|
|
var seen: Set<String> = []
|
|
for attribute in element.attributes {
|
|
let key = attribute.name.description
|
|
if !seen.insert(key).inserted {
|
|
issues.append(.init(
|
|
severity: .error,
|
|
message: "duplicate attribute '\(key)' on <\(element.name.description)>",
|
|
))
|
|
}
|
|
}
|
|
for child in element.children {
|
|
walk(child, into: &issues)
|
|
}
|
|
case .text, .cdata, .comment, .processingInstruction:
|
|
break
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
extension PureXML.Validation.Issue: Swift.Error {}
|