validation.validateOnScope - Code Metrics - Inspection of "Merge pull request #36 from muonsoft/conditional_c..." - muonsoft/validation - Measure and Improve Code Quality continuously with Scrutinizer

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by Igor

created 2021-05-16 18:35 UTC

validation.validateOnScope B

↳ Parent: functions.go

Complexity

Conditions

Size

Total Lines	20
Code Lines	13

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	11
CRAP Score	6.0208

Importance

Changes

Metric	Value
cc	6
eloc	13
nop	3
dl	0
loc	20
rs	8.6666
c	0
b	0
f	0
ccs	11
cts	12
cp	0.9167
crap	6.0208

package validation

import (
	"reflect"
	"time"

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

// 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.(ConditionalConstraint); ok {
			vs, err := constraint.validateConditionConstraints(scope, validate)
			if err != nil {
				return nil, err
			}

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

muonsoft / validation

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validation.validateOnScope B

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Code Coverage

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