validation.validateConditionConstraints - Code Metrics - Inspection of "conditional constraints" - muonsoft/validation - Measure and Improve Code Quality continuously with Scrutinizer

Passed

Pull Request — main (#36)

by Rushan

created 2021-04-13 18:30 UTC

validation.validateConditionConstraints B

↳ Parent: functions.go

Complexity

Conditions

Size

Total Lines	23
Code Lines	17

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	8
CRAP Score	6.288

Importance

Changes

Metric	Value
cc	6
eloc	17
dl	0
loc	23
ccs	8
cts	10
cp	0.8
crap	6.288
rs	8.6166
c	0
b	0
f	0
nop	4

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 {
			err := validateConditionConstraints(scope, constraint, &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 validateConditionConstraints(
	scope Scope,
	constraint ConditionalConstraint,
	violations *ViolationList,
	validate ValidateByConstraintFunc,
) error {
	if constraint.condition {
		for _, constraint := range constraint.thenConstraints {
			err := violations.AppendFromError(validate(constraint, scope))
			if err != nil {
				return err
			}
		}
	} else {
		for _, constraint := range constraint.elseConstraints {
			err := violations.AppendFromError(validate(constraint, scope))
			if err != nil {
				return err
			}
		}
	}

	return 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	err := validateConditionConstraints(scope, constraint, &violations, validate)
263	1	if err != nil {
264		return nil, err
265		}
266	1	} else if constraint, ok := option.(Constraint); ok {
267	1	err := violations.AppendFromError(validate(constraint, scope))
268	1	if err != nil {
269	1	return nil, err
270		}
271		}
272		}
273
274	1	return violations, nil
275		}
276
277		func validateConditionConstraints(
278		scope Scope,
279		constraint ConditionalConstraint,
280		violations *ViolationList,
281		validate ValidateByConstraintFunc,
282		) error {
283	1	if constraint.condition {
284	1	for _, constraint := range constraint.thenConstraints {
285	1	err := violations.AppendFromError(validate(constraint, scope))
286	1	if err != nil {
287		return err
288		}
289		}
290		} else {
291	1	for _, constraint := range constraint.elseConstraints {
292	1	err := violations.AppendFromError(validate(constraint, scope))
293	1	if err != nil {
294		return err
295		}
296		}
297		}
298
299	1	return nil
300		}
301
302		func validateIterableOfValidatables(scope Scope, iterable generic.Iterable) (ViolationList, error) {
303	1	violations := make(ViolationList, 0)
304
305	1	err := iterable.Iterate(func(key generic.Key, value interface{}) error {
306	1	s := scope
307	1	if key.IsIndex() {
308	1	s = s.atIndex(key.Index())
309		} else {
310	1	s = s.atProperty(key.String())
311		}
312
313	1	validate := newValidValidator(value.(Validatable), nil)
314	1	vs, err := validate(s)
315	1	if err != nil {
316		return err
317		}
318
319	1	violations = append(violations, vs...)
320
321	1	return nil
322		})
323
324	1	return violations, err
325		}
326

muonsoft / validation

Pull Request — main (#36)

validation.validateConditionConstraints B

Complexity

Size

Duplication

Code Coverage

Importance

Duplication Side-by-Side

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