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

Passed

Pull Request — main (#37)

by Rushan

created 2021-05-04 11:36 UTC

validation.validateOnScope B

↳ Parent: functions.go

Complexity

Conditions

Size

Total Lines	18
Code Lines	12

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	10
CRAP Score	6.027

Importance

Changes

Metric	Value
cc	6
eloc	12
dl	0
loc	18
ccs	10
cts	11
cp	0.9091
crap	6.027
rs	8.6666
c	0
b	0
f	0
nop	3

package validation

import (
	"reflect"
	"time"

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

type ConstraintsPool interface {
	validate(scope Scope, violations *ViolationList, validate ValidateByConstraintFunc) error
}

// ValidateByConstraintFunc is used for building validation functions for the values of specific types.
type ValidateByConstraintFunc func(constraint Constraint, scope Scope) error

type validateFunc func(scope Scope) (ViolationList, 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.(ConstraintsPool); ok {
			err := constraint.validate(scope, &violations, validate)
			if err != nil {
				return nil, err
			}
		} else 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 ConstraintsPool interface {
11		validate(scope Scope, violations *ViolationList, validate ValidateByConstraintFunc) error
12		}
13
14		// ValidateByConstraintFunc is used for building validation functions for the values of specific types.
15		type ValidateByConstraintFunc func(constraint Constraint, scope Scope) error
16
17		type validateFunc func(scope Scope) (ViolationList, error)
18
19		func newValueValidator(value interface{}, options []Option) (validateFunc, error) {
20	1	switch v := value.(type) {
21		case Validatable:
22	1	return newValidValidator(v, options), nil
23		case time.Time:
24	1	return newTimeValidator(&v, options), nil
25		case *time.Time:
26	1	return newTimeValidator(v, options), nil
27		}
28
29	1	v := reflect.ValueOf(value)
30
31	1	switch v.Kind() {
32		case reflect.Ptr:
33	1	return newValuePointerValidator(v, options)
34		case reflect.Bool:
35	1	b := v.Bool()
36	1	return newBoolValidator(&b, options), nil
37		case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64,
38		reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64,
39		reflect.Float32, reflect.Float64:
40	1	n, err := generic.NewNumber(value)
41	1	if err != nil {
42		return nil, err
43		}
44
45	1	return newNumberValidator(*n, options), nil
46		case reflect.String:
47	1	s := v.String()
48	1	return newStringValidator(&s, options), nil
49		case reflect.Array, reflect.Slice, reflect.Map:
50	1	i, err := generic.NewIterable(value)
51	1	if err != nil {
52		return nil, err
53		}
54
55	1	return newIterableValidator(i, options), nil
56		}
57
58	1	return nil, &NotValidatableError{Value: v}
59		}
60
61		func newValuePointerValidator(value reflect.Value, options []Option) (validateFunc, error) {
62	1	p := value.Elem()
63	1	if value.IsNil() {
64	1	return newNilValidator(options), nil
65		}
66
67	1	switch p.Kind() {
68		case reflect.Bool:
69	1	b := p.Bool()
70	1	return newBoolValidator(&b, options), nil
71		case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64,
72		reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64,
73		reflect.Float32, reflect.Float64:
74	1	n, err := generic.NewNumber(p.Interface())
75	1	if err != nil {
76		return nil, err
77		}
78
79	1	return newNumberValidator(*n, options), nil
80		case reflect.String:
81	1	s := p.String()
82	1	return newStringValidator(&s, options), nil
83		case reflect.Array, reflect.Slice, reflect.Map:
84	1	i, err := generic.NewIterable(p.Interface())
85	1	if err != nil {
86		return nil, err
87		}
88
89	1	return newIterableValidator(i, options), nil
90		}
91
92		return nil, &NotValidatableError{Value: value}
93		}
94
95		func newNilValidator(options []Option) validateFunc {
96	1	return newValidator(options, func(constraint Constraint, scope Scope) error {
97	1	if constraintValidator, ok := constraint.(NilConstraint); ok {
98	1	return constraintValidator.ValidateNil(scope)
99		}
100
101		return nil
102		})
103		}
104
105		func newBoolValidator(value *bool, options []Option) validateFunc {
106	1	return newValidator(options, func(constraint Constraint, scope Scope) error {
107	1	if c, ok := constraint.(BoolConstraint); ok {
108	1	return c.ValidateBool(value, scope)
109		}
110
111	1	return NewInapplicableConstraintError(constraint, "bool")
112		})
113		}
114
115		func newNumberValidator(value generic.Number, options []Option) validateFunc {
116	1	return newValidator(options, func(constraint Constraint, scope Scope) error {
117	1	if c, ok := constraint.(NumberConstraint); ok {
118	1	return c.ValidateNumber(value, scope)
119		}
120
121	1	return NewInapplicableConstraintError(constraint, "number")
122		})
123		}
124
125		func newStringValidator(value *string, options []Option) validateFunc {
126	1	return newValidator(options, func(constraint Constraint, scope Scope) error {
127	1	if c, ok := constraint.(StringConstraint); ok {
128	1	return c.ValidateString(value, scope)
129		}
130
131	1	return NewInapplicableConstraintError(constraint, "string")
132		})
133		}
134
135		func newIterableValidator(iterable generic.Iterable, options []Option) validateFunc {
136	1	return func(scope Scope) (ViolationList, error) {
137	1	err := scope.applyOptions(options...)
138	1	if err != nil {
139		return nil, err
140		}
141
142	1	violations, err := validateOnScope(scope, options, func(constraint Constraint, scope Scope) error {
143	1	if c, ok := constraint.(IterableConstraint); ok {
144	1	return c.ValidateIterable(iterable, scope)
145		}
146
147	1	return NewInapplicableConstraintError(constraint, "iterable")
148		})
149	1	if err != nil {
150	1	return nil, err
151		}
152
153	1	if iterable.IsElementImplements(validatableType) {
154	1	vs, err := validateIterableOfValidatables(scope, iterable)
155	1	if err != nil {
156		return nil, err
157		}
158	1	violations = append(violations, vs...)
159		}
160
161	1	return violations, nil
162		}
163		}
164
165		func newCountableValidator(count int, options []Option) validateFunc {
166	1	return newValidator(options, func(constraint Constraint, scope Scope) error {
167	1	if c, ok := constraint.(CountableConstraint); ok {
168	1	return c.ValidateCountable(count, scope)
169		}
170
171	1	return NewInapplicableConstraintError(constraint, "countable")
172		})
173		}
174
175		func newTimeValidator(value *time.Time, options []Option) validateFunc {
176	1	return newValidator(options, func(constraint Constraint, scope Scope) error {
177	1	if c, ok := constraint.(TimeConstraint); ok {
178	1	return c.ValidateTime(value, scope)
179		}
180
181	1	return NewInapplicableConstraintError(constraint, "time")
182		})
183		}
184
185		func newEachValidator(iterable generic.Iterable, options []Option) validateFunc {
186	1	return func(scope Scope) (ViolationList, error) {
187	1	violations := make(ViolationList, 0)
188
189	1	err := iterable.Iterate(func(key generic.Key, value interface{}) error {
190	1	opts := options
191	1	if key.IsIndex() {
192	1	opts = append(opts, ArrayIndex(key.Index()))
193		} else {
194	1	opts = append(opts, PropertyName(key.String()))
195		}
196
197	1	validate, err := newValueValidator(value, opts)
198	1	if err != nil {
199		return err
200		}
201
202	1	vs, err := validate(scope)
203	1	if err != nil {
204		return err
205		}
206	1	violations = append(violations, vs...)
207
208	1	return nil
209		})
210
211	1	return violations, err
212		}
213		}
214
215		func newEachStringValidator(values []string, options []Option) validateFunc {
216	1	return func(scope Scope) (ViolationList, error) {
217	1	violations := make(ViolationList, 0)
218
219	1	for i := range values {
220	1	opts := append(options, ArrayIndex(i))
221	1	validate := newStringValidator(&values[i], opts)
222	1	vs, err := validate(scope)
223	1	if err != nil {
224		return nil, err
225		}
226	1	violations = append(violations, vs...)
227		}
228
229	1	return violations, nil
230		}
231		}
232
233		func newValidValidator(value Validatable, options []Option) validateFunc {
234	1	return func(scope Scope) (ViolationList, error) {
235	1	err := scope.applyOptions(options...)
236	1	if err != nil {
237		return nil, err
238		}
239
240	1	err = value.Validate(newScopedValidator(scope))
241	1	violations, ok := UnwrapViolationList(err)
242	1	if ok {
243	1	return violations, nil
244		}
245
246		return nil, err
247		}
248		}
249
250		func newValidator(options []Option, validate ValidateByConstraintFunc) validateFunc {
251	1	return func(scope Scope) (ViolationList, error) {
252	1	err := scope.applyOptions(options...)
253	1	if err != nil {
254	1	return nil, err
255		}
256
257	1	return validateOnScope(scope, options, validate)
258		}
259		}
260
261		func validateOnScope(scope Scope, options []Option, validate ValidateByConstraintFunc) (ViolationList, error) {
262	1	violations := make(ViolationList, 0)
263
264	1	for _, option := range options {
265	1	if constraint, ok := option.(ConstraintsPool); ok {
266	1	err := constraint.validate(scope, &violations, validate)
267	1	if err != nil {
268		return nil, err
269		}
270	1	} else if constraint, ok := option.(Constraint); ok {
271	1	err := violations.AppendFromError(validate(constraint, scope))
272	1	if err != nil {
273	1	return nil, err
274		}
275		}
276		}
277
278	1	return violations, nil
279		}
280
281		func validateIterableOfValidatables(scope Scope, iterable generic.Iterable) (ViolationList, error) {
282	1	violations := make(ViolationList, 0)
283
284	1	err := iterable.Iterate(func(key generic.Key, value interface{}) error {
285	1	s := scope
286	1	if key.IsIndex() {
287	1	s = s.atIndex(key.Index())
288		} else {
289	1	s = s.atProperty(key.String())
290		}
291
292	1	validate := newValidValidator(value.(Validatable), nil)
293	1	vs, err := validate(s)
294	1	if err != nil {
295		return err
296		}
297
298	1	violations = append(violations, vs...)
299
300	1	return nil
301		})
302
303	1	return violations, err
304		}
305

muonsoft / validation

Pull Request — main (#37)

validation.validateOnScope B

Complexity

Size

Duplication

Code Coverage

Importance

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