policy

type Annotation struct {
	Key    string
	Values []string
}

type Context string

type Decision struct {
	// contains filtered or unexported fields
}

type Fact struct {
	// Message is the full name of the message, for errors.
	Message string
	// Name is the field's name in the schema, such as the proto field name.
	// It is the column name unless a rule gives another with [Name].
	Name string
	// GoName is the field of the Go struct the schema generated.
	GoName string
	// Kind is the field's kind in the schema's own words, such as "string" or
	// "int64". Rules may match on it.
	Kind string
	// Annotations are what the schema says about the field, such as its
	// data categories.
	Annotations []Annotation
}

type IndexName string

type IndexOption struct {
	Key   string
	Value string
}

type IndexSpec struct {
	Name    IndexName
	Options []IndexOption
}

type Key string

type Matcher interface {
	Match(Fact) bool
}

type MatcherFunc func(Fact) bool

type Message struct {
	// contains filtered or unexported fields
}

type Option func(*Outcome)

type Outcome struct {
	Decision Decision
	// Name is the column name, or "" for the field's schema name.
	Name string
	// Identity is the field's part of its context, or "" for the column
	// name. A field whose column is renamed keeps its identity, so data
	// written before the change still decrypts.
	Identity string
}

type Rule interface {
	Decide(Fact) (Outcome, bool)
}

type Rules []Rule

type Source interface {
	// Facts returns one fact for each field of the message, in declared
	// order. The message is the value given to [ForMessage].
	Facts(message any) ([]Fact, error)
}

type SourceFunc func(message any) ([]Fact, error)