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package validation |
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import ( |
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"github.com/muonsoft/validation/generic" |
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"time" |
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) |
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// Constraint is the base interface to build validation constraints. |
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type Constraint interface { |
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Option |
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// Name is a constraint name that can be used in internal errors. |
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Name() string |
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} |
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// NilConstraint is used for constraints that need to check value for nil. In common case |
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// you do not need to implement it in your constraints because nil values should be ignored. |
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type NilConstraint interface { |
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Constraint |
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ValidateNil(scope Scope) error |
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} |
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// BoolConstraint is used to build constraints for boolean values validation. |
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type BoolConstraint interface { |
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Constraint |
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ValidateBool(value *bool, scope Scope) error |
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} |
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// NumberConstraint is used to build constraints for numeric values validation. |
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// |
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// At this moment working with numbers is based on reflection. |
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// Be aware. This constraint is subject to be changed after generics implementation in Go. |
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type NumberConstraint interface { |
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Constraint |
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ValidateNumber(value generic.Number, scope Scope) error |
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} |
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// StringConstraint is used to build constraints for string values validation. |
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type StringConstraint interface { |
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Constraint |
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ValidateString(value *string, scope Scope) error |
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} |
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// IterableConstraint is used to build constraints for validation of iterables (arrays, slices, or maps). |
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// |
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// At this moment working with numbers is based on reflection. |
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// Be aware. This constraint is subject to be changed after generics implementation in Go. |
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type IterableConstraint interface { |
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Constraint |
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ValidateIterable(value generic.Iterable, scope Scope) error |
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} |
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// CountableConstraint is used to build constraints for simpler validation of iterable elements count. |
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type CountableConstraint interface { |
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Constraint |
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ValidateCountable(count int, scope Scope) error |
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} |
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// TimeConstraint is used to build constraints for date/time validation. |
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type TimeConstraint interface { |
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Constraint |
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ValidateTime(value *time.Time, scope Scope) error |
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} |
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type ConditionalConstraint struct { |
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condition bool |
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thenConstraints []Constraint |
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elseConstraints []Constraint |
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} |
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func When(condition bool) ConditionalConstraint { |
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1 |
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return ConditionalConstraint{ |
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condition: condition, |
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} |
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} |
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func (c ConditionalConstraint) Then(constraints ...Constraint) ConditionalConstraint { |
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1 |
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c.thenConstraints = constraints |
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return c |
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} |
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func (c ConditionalConstraint) Else(constraints ...Constraint) ConditionalConstraint { |
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c.elseConstraints = constraints |
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return c |
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} |
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func (c ConditionalConstraint) SetUp() error { |
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1 |
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if len(c.thenConstraints) == 0 { |
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return errThenBranchNotSet |
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} |
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1 |
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if len(c.elseConstraints) == 0 { |
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return errElseBranchNotSet |
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} |
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return nil |
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} |
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func (c ConditionalConstraint) Name() string { |
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return "ConditionalConstraint" |
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} |
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type notFoundConstraint struct { |
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key string |
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} |
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func (c notFoundConstraint) SetUp() error { |
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return ConstraintNotFoundError{Key: c.key} |
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} |
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func (c notFoundConstraint) Name() string { |
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return "notFoundConstraint" |
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} |
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muonsoft /
validation
