datatype

Documentation

Index

• type T
• type Validator

Types

type T

type T interface {
	Type() reflect.Type
	Build(typeDefinition string, registry ...T) Validator
}

T represents a datatype. The Build function returns a Validator if it manages types with the name `typeDefinition` (from the configuration field "type"); else it or returns NIL if the type definition does not match this datatype; the registry is passed to allow recursive datatypes (e.g. slices, structs, etc) The datatype's validator (when input is valid) must return a cast's go type matching the `Type() reflect.Type`

type Validator

type Validator func(value interface{}) (cast interface{}, valid bool)

Validator returns whether a given value fulfills the datatype and casts the value into a common go type.

for example, if a validator checks for upper case strings, whether the value is a []byte, a string or a []rune, if the value matches the validator's checks, it will be cast it into a common go type, say, string.