79 lines
2.4 KiB
Swift
79 lines
2.4 KiB
Swift
extension PureYAML.Parsing.Parser {
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func composeScalarValue(
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_ value: String,
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tag: String?,
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style: PureYAML.Parsing.ScalarStyle,
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mark: PureYAML.Parsing.Mark,
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) throws -> PureYAML.Model.Value {
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if let tagged = try composeTaggedScalarValue(value, tag: tag, mark: mark) {
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return tagged
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}
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switch style {
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case .folded, .literal:
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return .string(value)
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case .plain:
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return try parseScalar(value, line: mark.line)
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case .doubleQuoted, .singleQuoted:
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return .string(value)
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}
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}
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func composeTaggedScalarValue(
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_ value: String,
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tag: String?,
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mark: PureYAML.Parsing.Mark,
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) throws -> PureYAML.Model.Value? {
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guard let tag = normalizedTag(tag) else {
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return nil
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}
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switch tag {
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case "tag:yaml.org,2002:str":
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return .string(value)
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case "tag:yaml.org,2002:int":
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guard let int = parseInteger(trim(value)) else {
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throw invalidTaggedScalar(tag: "tag:yaml.org,2002:int", value: value, mark: mark)
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}
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return .int(int)
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case "tag:yaml.org,2002:float":
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guard let double = parseDouble(trim(value)) else {
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throw invalidTaggedScalar(tag: "tag:yaml.org,2002:float", value: value, mark: mark)
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}
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return .double(double)
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case "tag:yaml.org,2002:bool":
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return try composeTaggedBoolValue(value, mark: mark)
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case "tag:yaml.org,2002:null":
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return .null
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default:
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return nil
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}
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}
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func composeTaggedBoolValue(
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_ value: String,
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mark: PureYAML.Parsing.Mark,
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) throws -> PureYAML.Model.Value {
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guard let bool = parseBool(trim(value)) else {
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throw invalidTaggedScalar(tag: "tag:yaml.org,2002:bool", value: value, mark: mark)
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}
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return .bool(bool)
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}
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func normalizedTag(_ tag: String?) -> String? {
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PureYAML.Parsing.TagNormalizer.normalize(tag)
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}
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func invalidTaggedScalar(
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tag: String,
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value: String,
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mark: PureYAML.Parsing.Mark,
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) -> PureYAML.Parsing.ParseError {
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PureYAML.Parsing.ParseError.invalidTaggedScalar(
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tag: tag,
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value: value,
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line: mark.line,
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column: mark.column,
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)
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}
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}
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