validation.newNilValidator - Code Metrics - Inspection of "choice-constraint" - muonsoft/validation - Measure and Improve Code Quality continuously with Scrutinizer

Passed

Pull Request — main (#23)

by Igor

created 2021-03-14 17:34 UTC

validation.newNilValidator A

↳ Parent: functions.go

Complexity

Conditions

Size

Total Lines	7
Code Lines	5

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	3
CRAP Score	3.1406

Importance

Changes

Metric	Value
cc	3
eloc	5
dl	0
loc	7
ccs	3
cts	4
cp	0.75
crap	3.1406
rs	10
c	0
b	0
f	0
nop	1

package validation

import (
	"reflect"
	"time"

	"github.com/muonsoft/validation/generic"
)

type validateFunc func(scope Scope) (ViolationList, error)

type validateByConstraintFunc func(constraint Constraint, scope Scope) error

func newValueValidator(value interface{}, options []Option) (validateFunc, error) {
	switch v := value.(type) {
	case Validatable:
		return newValidValidator(v, options), nil
	case time.Time:
		return newTimeValidator(&v, options), nil
	case *time.Time:
		return newTimeValidator(v, options), nil
	}

	v := reflect.ValueOf(value)

	switch v.Kind() {
	case reflect.Ptr:
		return newValuePointerValidator(v, options)
	case reflect.Bool:
		b := v.Bool()
		return newBoolValidator(&b, options), nil
	case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64,
		reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64,
		reflect.Float32, reflect.Float64:
		n, err := generic.NewNumber(value)
		if err != nil {
			return nil, err
		}

		return newNumberValidator(*n, options), nil
	case reflect.String:
		s := v.String()
		return newStringValidator(&s, options), nil
	case reflect.Array, reflect.Slice, reflect.Map:
		i, err := generic.NewIterable(value)
		if err != nil {
			return nil, err
		}

		return newIterableValidator(i, options), nil
	}

	return nil, &NotValidatableError{Value: v}
}

func newValuePointerValidator(value reflect.Value, options []Option) (validateFunc, error) {
	p := value.Elem()
	if value.IsNil() {
		return newNilValidator(options), nil
	}

	switch p.Kind() {
	case reflect.Bool:
		b := p.Bool()
		return newBoolValidator(&b, options), nil
	case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64,
		reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64,
		reflect.Float32, reflect.Float64:
		n, err := generic.NewNumber(p.Interface())
		if err != nil {
			return nil, err
		}

		return newNumberValidator(*n, options), nil
	case reflect.String:
		s := p.String()
		return newStringValidator(&s, options), nil
	case reflect.Array, reflect.Slice, reflect.Map:
		i, err := generic.NewIterable(p.Interface())
		if err != nil {
			return nil, err
		}

		return newIterableValidator(i, options), nil
	}

	return nil, &NotValidatableError{Value: value}
}

func newNilValidator(options []Option) validateFunc {
	return newValidator(options, func(constraint Constraint, scope Scope) error {
		if constraintValidator, ok := constraint.(NilConstraint); ok {
			return constraintValidator.ValidateNil(scope)
		}

		return nil
	})
}

func newBoolValidator(value *bool, options []Option) validateFunc {
	return newValidator(options, func(constraint Constraint, scope Scope) error {
		if c, ok := constraint.(BoolConstraint); ok {
			return c.ValidateBool(value, scope)
		}

		return newInapplicableConstraintError(constraint, "bool")
	})
}

func newNumberValidator(value generic.Number, options []Option) validateFunc {
	return newValidator(options, func(constraint Constraint, scope Scope) error {
		if c, ok := constraint.(NumberConstraint); ok {
			return c.ValidateNumber(value, scope)
		}

		return newInapplicableConstraintError(constraint, "number")
	})
}

func newStringValidator(value *string, options []Option) validateFunc {
	return newValidator(options, func(constraint Constraint, scope Scope) error {
		if c, ok := constraint.(StringConstraint); ok {
			return c.ValidateString(value, scope)
		}

		return newInapplicableConstraintError(constraint, "string")
	})
}

func newIterableValidator(iterable generic.Iterable, options []Option) validateFunc {
	return func(scope Scope) (ViolationList, error) {
		err := scope.applyOptions(options...)
		if err != nil {
			return nil, err
		}

		violations, err := validateOnScope(scope, options, func(constraint Constraint, scope Scope) error {
			if c, ok := constraint.(IterableConstraint); ok {
				return c.ValidateIterable(iterable, scope)
			}

			return newInapplicableConstraintError(constraint, "iterable")
		})
		if err != nil {
			return nil, err
		}

		if iterable.IsElementImplements(validatableType) {
			vs, err := validateIterableOfValidatables(scope, iterable)
			if err != nil {
				return nil, err
			}
			violations = append(violations, vs...)
		}

		return violations, nil
	}
}

func newCountableValidator(count int, options []Option) validateFunc {
	return newValidator(options, func(constraint Constraint, scope Scope) error {
		if c, ok := constraint.(CountableConstraint); ok {
			return c.ValidateCountable(count, scope)
		}

		return newInapplicableConstraintError(constraint, "countable")
	})
}

func newTimeValidator(value *time.Time, options []Option) validateFunc {
	return newValidator(options, func(constraint Constraint, scope Scope) error {
		if c, ok := constraint.(TimeConstraint); ok {
			return c.ValidateTime(value, scope)
		}

		return newInapplicableConstraintError(constraint, "time")
	})
}

func newEachValidator(iterable generic.Iterable, options []Option) validateFunc {
	return func(scope Scope) (ViolationList, error) {
		violations := make(ViolationList, 0)

		err := iterable.Iterate(func(key generic.Key, value interface{}) error {
			opts := options
			if key.IsIndex() {
				opts = append(opts, ArrayIndex(key.Index()))
			} else {
				opts = append(opts, PropertyName(key.String()))
			}

			validate, err := newValueValidator(value, opts)
			if err != nil {
				return err
			}

			vs, err := validate(scope)
			if err != nil {
				return err
			}
			violations = append(violations, vs...)

			return nil
		})

		return violations, err
	}
}

func newEachStringValidator(values []string, options []Option) validateFunc {
	return func(scope Scope) (ViolationList, error) {
		violations := make(ViolationList, 0)

		for i := range values {
			opts := append(options, ArrayIndex(i))
			validate := newStringValidator(&values[i], opts)
			vs, err := validate(scope)
			if err != nil {
				return nil, err
			}
			violations = append(violations, vs...)
		}

		return violations, nil
	}
}

func newValidValidator(value Validatable, options []Option) validateFunc {
	return func(scope Scope) (ViolationList, error) {
		err := scope.applyOptions(options...)
		if err != nil {
			return nil, err
		}

		err = value.Validate(newScopedValidator(scope))
		violations, ok := UnwrapViolationList(err)
		if ok {
			return violations, nil
		}

		return nil, err
	}
}

func newValidator(options []Option, validate validateByConstraintFunc) validateFunc {
	return func(scope Scope) (ViolationList, error) {
		err := scope.applyOptions(options...)
		if err != nil {
			return nil, err
		}

		return validateOnScope(scope, options, validate)
	}
}

func validateOnScope(scope Scope, options []Option, validate validateByConstraintFunc) (ViolationList, error) {
	violations := make(ViolationList, 0)

	for _, option := range options {
		if constraint, ok := option.(Constraint); ok {
			err := violations.AppendFromError(validate(constraint, scope))
			if err != nil {
				return nil, err
			}
		}
	}

	return violations, nil
}

func validateIterableOfValidatables(scope Scope, iterable generic.Iterable) (ViolationList, error) {
	violations := make(ViolationList, 0)

	err := iterable.Iterate(func(key generic.Key, value interface{}) error {
		s := scope
		if key.IsIndex() {
			s = s.atIndex(key.Index())
		} else {
			s = s.atProperty(key.String())
		}

		validate := newValidValidator(value.(Validatable), nil)
		vs, err := validate(s)
		if err != nil {
			return err
		}

		violations = append(violations, vs...)

		return nil
	})

	return violations, err
}


1		package validation
2
3		import (
4		"reflect"
5		"time"
6
7		"github.com/muonsoft/validation/generic"
8		)
9
10		type validateFunc func(scope Scope) (ViolationList, error)
11
12		type validateByConstraintFunc func(constraint Constraint, scope Scope) error
13
14		func newValueValidator(value interface{}, options []Option) (validateFunc, error) {
15	1	switch v := value.(type) {
16		case Validatable:
17	1	return newValidValidator(v, options), nil
18		case time.Time:
19	1	return newTimeValidator(&v, options), nil
20		case *time.Time:
21	1	return newTimeValidator(v, options), nil
22		}
23
24	1	v := reflect.ValueOf(value)
25
26	1	switch v.Kind() {
27		case reflect.Ptr:
28	1	return newValuePointerValidator(v, options)
29		case reflect.Bool:
30	1	b := v.Bool()
31	1	return newBoolValidator(&b, options), nil
32		case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64,
33		reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64,
34		reflect.Float32, reflect.Float64:
35	1	n, err := generic.NewNumber(value)
36	1	if err != nil {
37		return nil, err
38		}
39
40	1	return newNumberValidator(*n, options), nil
41		case reflect.String:
42	1	s := v.String()
43	1	return newStringValidator(&s, options), nil
44		case reflect.Array, reflect.Slice, reflect.Map:
45	1	i, err := generic.NewIterable(value)
46	1	if err != nil {
47		return nil, err
48		}
49
50	1	return newIterableValidator(i, options), nil
51		}
52
53	1	return nil, &NotValidatableError{Value: v}
54		}
55
56		func newValuePointerValidator(value reflect.Value, options []Option) (validateFunc, error) {
57	1	p := value.Elem()
58	1	if value.IsNil() {
59	1	return newNilValidator(options), nil
60		}
61
62	1	switch p.Kind() {
63		case reflect.Bool:
64	1	b := p.Bool()
65	1	return newBoolValidator(&b, options), nil
66		case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64,
67		reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64,
68		reflect.Float32, reflect.Float64:
69	1	n, err := generic.NewNumber(p.Interface())
70	1	if err != nil {
71		return nil, err
72		}
73
74	1	return newNumberValidator(*n, options), nil
75		case reflect.String:
76	1	s := p.String()
77	1	return newStringValidator(&s, options), nil
78		case reflect.Array, reflect.Slice, reflect.Map:
79	1	i, err := generic.NewIterable(p.Interface())
80	1	if err != nil {
81		return nil, err
82		}
83
84	1	return newIterableValidator(i, options), nil
85		}
86
87		return nil, &NotValidatableError{Value: value}
88		}
89
90		func newNilValidator(options []Option) validateFunc {
91	1	return newValidator(options, func(constraint Constraint, scope Scope) error {
92	1	if constraintValidator, ok := constraint.(NilConstraint); ok {
93	1	return constraintValidator.ValidateNil(scope)
94		}
95
96		return nil
97		})
98		}
99
100		func newBoolValidator(value *bool, options []Option) validateFunc {
101	1	return newValidator(options, func(constraint Constraint, scope Scope) error {
102	1	if c, ok := constraint.(BoolConstraint); ok {
103	1	return c.ValidateBool(value, scope)
104		}
105
106	1	return newInapplicableConstraintError(constraint, "bool")
107		})
108		}
109
110		func newNumberValidator(value generic.Number, options []Option) validateFunc {
111	1	return newValidator(options, func(constraint Constraint, scope Scope) error {
112	1	if c, ok := constraint.(NumberConstraint); ok {
113	1	return c.ValidateNumber(value, scope)
114		}
115
116	1	return newInapplicableConstraintError(constraint, "number")
117		})
118		}
119
120		func newStringValidator(value *string, options []Option) validateFunc {
121	1	return newValidator(options, func(constraint Constraint, scope Scope) error {
122	1	if c, ok := constraint.(StringConstraint); ok {
123	1	return c.ValidateString(value, scope)
124		}
125
126	1	return newInapplicableConstraintError(constraint, "string")
127		})
128		}
129
130		func newIterableValidator(iterable generic.Iterable, options []Option) validateFunc {
131	1	return func(scope Scope) (ViolationList, error) {
132	1	err := scope.applyOptions(options...)
133	1	if err != nil {
134		return nil, err
135		}
136
137	1	violations, err := validateOnScope(scope, options, func(constraint Constraint, scope Scope) error {
138	1	if c, ok := constraint.(IterableConstraint); ok {
139	1	return c.ValidateIterable(iterable, scope)
140		}
141
142	1	return newInapplicableConstraintError(constraint, "iterable")
143		})
144	1	if err != nil {
145	1	return nil, err
146		}
147
148	1	if iterable.IsElementImplements(validatableType) {
149	1	vs, err := validateIterableOfValidatables(scope, iterable)
150	1	if err != nil {
151		return nil, err
152		}
153	1	violations = append(violations, vs...)
154		}
155
156	1	return violations, nil
157		}
158		}
159
160		func newCountableValidator(count int, options []Option) validateFunc {
161	1	return newValidator(options, func(constraint Constraint, scope Scope) error {
162	1	if c, ok := constraint.(CountableConstraint); ok {
163	1	return c.ValidateCountable(count, scope)
164		}
165
166	1	return newInapplicableConstraintError(constraint, "countable")
167		})
168		}
169
170		func newTimeValidator(value *time.Time, options []Option) validateFunc {
171	1	return newValidator(options, func(constraint Constraint, scope Scope) error {
172	1	if c, ok := constraint.(TimeConstraint); ok {
173	1	return c.ValidateTime(value, scope)
174		}
175
176	1	return newInapplicableConstraintError(constraint, "time")
177		})
178		}
179
180		func newEachValidator(iterable generic.Iterable, options []Option) validateFunc {
181	1	return func(scope Scope) (ViolationList, error) {
182	1	violations := make(ViolationList, 0)
183
184	1	err := iterable.Iterate(func(key generic.Key, value interface{}) error {
185	1	opts := options
186	1	if key.IsIndex() {
187	1	opts = append(opts, ArrayIndex(key.Index()))
188		} else {
189	1	opts = append(opts, PropertyName(key.String()))
190		}
191
192	1	validate, err := newValueValidator(value, opts)
193	1	if err != nil {
194		return err
195		}
196
197	1	vs, err := validate(scope)
198	1	if err != nil {
199		return err
200		}
201	1	violations = append(violations, vs...)
202
203	1	return nil
204		})
205
206	1	return violations, err
207		}
208		}
209
210		func newEachStringValidator(values []string, options []Option) validateFunc {
211	1	return func(scope Scope) (ViolationList, error) {
212	1	violations := make(ViolationList, 0)
213
214	1	for i := range values {
215	1	opts := append(options, ArrayIndex(i))
216	1	validate := newStringValidator(&values[i], opts)
217	1	vs, err := validate(scope)
218	1	if err != nil {
219		return nil, err
220		}
221	1	violations = append(violations, vs...)
222		}
223
224	1	return violations, nil
225		}
226		}
227
228		func newValidValidator(value Validatable, options []Option) validateFunc {
229	1	return func(scope Scope) (ViolationList, error) {
230	1	err := scope.applyOptions(options...)
231	1	if err != nil {
232		return nil, err
233		}
234
235	1	err = value.Validate(newScopedValidator(scope))
236	1	violations, ok := UnwrapViolationList(err)
237	1	if ok {
238	1	return violations, nil
239		}
240
241		return nil, err
242		}
243		}
244
245		func newValidator(options []Option, validate validateByConstraintFunc) validateFunc {
246	1	return func(scope Scope) (ViolationList, error) {
247	1	err := scope.applyOptions(options...)
248	1	if err != nil {
249	1	return nil, err
250		}
251
252	1	return validateOnScope(scope, options, validate)
253		}
254		}
255
256		func validateOnScope(scope Scope, options []Option, validate validateByConstraintFunc) (ViolationList, error) {
257	1	violations := make(ViolationList, 0)
258
259	1	for _, option := range options {
260	1	if constraint, ok := option.(Constraint); ok {
261	1	err := violations.AppendFromError(validate(constraint, scope))
262	1	if err != nil {
263	1	return nil, err
264		}
265		}
266		}
267
268	1	return violations, nil
269		}
270
271		func validateIterableOfValidatables(scope Scope, iterable generic.Iterable) (ViolationList, error) {
272	1	violations := make(ViolationList, 0)
273
274	1	err := iterable.Iterate(func(key generic.Key, value interface{}) error {
275	1	s := scope
276	1	if key.IsIndex() {
277	1	s = s.atIndex(key.Index())
278		} else {
279	1	s = s.atProperty(key.String())
280		}
281
282	1	validate := newValidValidator(value.(Validatable), nil)
283	1	vs, err := validate(s)
284	1	if err != nil {
285		return err
286		}
287
288	1	violations = append(violations, vs...)
289
290	1	return nil
291		})
292
293	1	return violations, err
294		}
295

muonsoft / validation

Pull Request — main (#23)

validation.newNilValidator A

Complexity

Size

Duplication

Code Coverage

Importance

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