The tagged-node validator carried its own copy of the validation machinery: a Tagged.Rule cloning Validation's check type and a Tagged.Context cloning its context, differing only in subject type. That is the per-layer duplication the validation idiom exists to prevent (principle 10). Generalise the type-directed framework over both the subject and the document: SubjectContext, Check, and AnyCheck now take a Document type parameter for the validated tree's root. The model layer validates with a Model.Value document, the tagged layer with a Tagged.Node document, each truthful rather than forcing one root type to stand in for the other. The tagged layer keeps only what is genuinely its own: the Node document type, its built-in check (now Tagged.BuiltinCheck, a Check<Node, Node>), and its traversal. Tagged.Rule and the tagged Context are removed. The validator surface is unchanged but validating now takes a Check<Node, Node>. All 399 tests pass; the coverage gate reconciles to 62 public types.
88 lines
5.8 KiB
Plaintext
88 lines
5.8 KiB
Plaintext
# Public-type validation coverage manifest (validation-rules.md).
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# Every public type in the PureYAML target is classified exactly once.
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# Columns (tab-separated): <fully.qualified.Type> <validated|excluded> <one-line reason>
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# `validated`: carries a runtime invariant the type system does not enforce; backed by a
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# Validation<Subject> in the framework phase.
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# `excluded`: a caseless namespace, a closed sum type whose illegal states are unrepresentable,
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# a pure data-transfer type, an error value, or engine/machinery that is not a validated subject.
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# scripts/check-validation-coverage.sh fails the build if a public type is missing here or a line
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# here is no longer public.
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# --- namespaces (caseless enums) ---
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PureYAML excluded caseless namespace; holds no instances or state
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PureYAML.Decoding excluded caseless namespace; holds no instances or state
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PureYAML.Emitting excluded caseless namespace; holds no instances or state
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PureYAML.Encoding excluded caseless namespace; holds no instances or state
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PureYAML.Model excluded caseless namespace; holds no instances or state
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PureYAML.Parsing excluded caseless namespace; holds no instances or state
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PureYAML.Stream excluded caseless namespace; holds no instances or state
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PureYAML.Tagged excluded caseless namespace; holds no instances or state
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PureYAML.Validation excluded caseless namespace; holds no instances or state
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# --- model ---
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PureYAML.Model.Value validated core YAML value; mapping-key uniqueness and merge/alias shape are runtime invariants
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PureYAML.Model.Mapping validated mapping keys must be unique within a mapping
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PureYAML.Model.Pair excluded data-transfer key/value pair; no invariant beyond its components
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PureYAML.Model.Key excluded closed sum type (string/sequence/mapping); illegal states unrepresentable
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# --- stream ---
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PureYAML.Stream.Document excluded wraps a validated Model.Value plus an index; no own invariant
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PureYAML.Stream.Issue excluded diagnostic data-transfer type
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PureYAML.Stream.Issue.Collection excluded error aggregate; data-transfer
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PureYAML.Stream.Result excluded diagnostic result data-transfer type
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# --- parsing ---
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PureYAML.Parsing.ParseError excluded error enum; cases are unrepresentable-illegal, carries diagnostics only
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PureYAML.Parsing.Parser excluded parsing engine; produces values, is not itself a validated subject
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# --- emitting ---
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PureYAML.Emitting.Dumper excluded emitter engine; not a validated subject
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PureYAML.Emitting.Options excluded emitter configuration; no cross-field invariant
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PureYAML.Emitting.CollectionStyle excluded closed enum; illegal states unrepresentable
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PureYAML.Emitting.ScalarStyle excluded closed enum; illegal states unrepresentable
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# --- decoding / encoding (Codable machinery) ---
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PureYAML.Decoding.Decoder excluded Codable decoding machinery; not a validated subject
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PureYAML.Decoding.Error excluded error enum; data-transfer
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PureYAML.Encoding.Encoder excluded Codable encoding machinery; not a validated subject
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PureYAML.Encoding.Error excluded error enum; data-transfer
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# --- tagged node subsystem ---
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PureYAML.Tagged.Node validated tagged node tree; mapping-key uniqueness is a runtime invariant
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PureYAML.Tagged.Mapping validated tagged mapping keys must be unique
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PureYAML.Tagged.Pair excluded data-transfer key/value pair
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PureYAML.Tagged.Scalar excluded data-transfer scalar (value + tag)
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PureYAML.Tagged.Sequence excluded data-transfer ordered nodes
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PureYAML.Tagged.Tag excluded data-transfer tag identifier
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PureYAML.Tagged.NodeKind excluded closed enum; illegal states unrepresentable
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PureYAML.Tagged.Document excluded wraps a validated Tagged.Node
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PureYAML.Tagged.ConstructionContext excluded construction context data-transfer type
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PureYAML.Tagged.ConstructionError excluded error enum; data-transfer
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PureYAML.Tagged.Constructor excluded tag-construction engine; not a validated subject
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PureYAML.Tagged.BuiltinCheck excluded caseless namespace of the tagged layer's built-in checks
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PureYAML.Tagged.Validator excluded tagged-tree traversal over the shared Check framework; not a validated subject
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# --- validation framework's own types ---
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PureYAML.Validation.Validator excluded validation machinery; not a validated subject
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PureYAML.Validation.Rule excluded the Validation<Subject> analog; a rule type, not a subject
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PureYAML.Validation.Context excluded validation context passed to checks; not a subject
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PureYAML.Validation.Issue excluded validation error data-transfer type
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PureYAML.Validation.Issue.Collection excluded error aggregate; data-transfer
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PureYAML.Validation.Result excluded validation result data-transfer type
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PureYAML.Validation.Severity excluded closed enum; illegal states unrepresentable
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PureYAML.Validation.Path excluded coding-path data-transfer type
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PureYAML.Validation.Path.Component excluded coding-path element; closed enum
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PureYAML.Validation.Report excluded diagnostic report data-transfer type
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PureYAML.Validation.ReportError excluded error type; data-transfer
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PureYAML.Validation.SourceReport excluded diagnostic report data-transfer type
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PureYAML.Validation.Source excluded source descriptor data-transfer type
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PureYAML.Validation.BatchReport excluded diagnostic report data-transfer type
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PureYAML.Validation.Diagnostic excluded diagnostic data-transfer type
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PureYAML.Validation.DiagnosticKind excluded closed enum; illegal states unrepresentable
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PureYAML.Validation.PreflightScanner excluded pre-parse scanner engine; not a validated subject
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PureYAML.Validation.Validatable excluded marker protocol constraining check subjects; no instances or state of its own
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PureYAML.Validation.SubjectContext excluded read-only context passed to a type-directed check; not a subject
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PureYAML.Validation.Check excluded the type-directed validation value (Validation<Subject> role); a rule, not a subject
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PureYAML.Validation.AnyCheck excluded type-erased check; validation dispatch machinery
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PureYAML.Validation.BuiltinCheck excluded caseless namespace of built-in checks
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