Mihaela Mihaljevic
27cc8cbfbb
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The JSON writer escapes the characters a YAML reader mangles. PureYAML.JSON.parse and parseLocated read JSON with those characters held back and given back, so no position moves, and Convert.convert takes the format of its source.
22 lines
1.3 KiB
Swift
22 lines
1.3 KiB
Swift
import PureYAML
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public extension PureYAML.JSON {
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/// Reads text that is JSON into the shared value tree.
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///
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/// JSON is a subset of YAML 1.2 apart from a few characters that RFC 8259 lets a string hold as they are and the YAML reader does not: it folds U+0085, U+2028 and
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/// U+2029 as line breaks, it refuses U+007F, the C1 controls, U+FFFE and U+FFFF, and so a string that holds one comes back from ``PureYAML/parse(_:)`` as another
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/// string or not at all. Here each such character inside a string is held back from the reader and given back in the value, so the string is the one the JSON
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/// means. Everything else is read by the YAML reader as it is, and what is not JSON is refused by it as before.
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static func parse(_ text: String) throws -> PureYAML.Model.Value {
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let source = try Source(text)
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return try source.restoring(PureYAML.parse(source.masked))
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}
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/// As ``parse(_:)``, with the span of every node. The spans are those of the text as it is: a held back character is one scalar in the text the reader sees, as it is
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/// in `text`, so no position moves.
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static func parseLocated(_ text: String) throws -> PureYAML.Model.LocatedValue {
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let source = try Source(text)
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return try source.restoring(PureYAML.parseLocated(source.masked))
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}
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}
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