it.NumberComparisonConstraint.Name - Code Metrics - Inspection of "Merge pull request #31 from muonsoft/comparison-co..." - muonsoft/validation - Measure and Improve Code Quality continuously with Scrutinizer

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by Rushan

created 2021-03-23 18:52 UTC

it.NumberComparisonConstraint.Name A

↳ Parent: it/comparison.go

Complexity

Conditions

Size

Total Lines	2
Code Lines	2

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	0
CRAP Score	2

Importance

Changes

Metric	Value
cc	1
eloc	2
dl	0
loc	2
rs	10
c	0
b	0
f	0
ccs	0
cts	1
cp	0
crap	2
nop	0

package it

import (
	"github.com/muonsoft/validation"
	"github.com/muonsoft/validation/code"
	"github.com/muonsoft/validation/generic"
	"github.com/muonsoft/validation/message"
)

// NumberComparisonConstraint is used for various numeric comparisons between integer and float values.
// Values are compared as integers if the compared and specified values are integers.
// Otherwise, numbers are always compared as floating point numbers.
type NumberComparisonConstraint struct {
	isIgnored       bool
	code            string
	messageTemplate string
	comparedValue   string
	isValid         func(value generic.Number) bool
}

// IsEqualToInteger checks that the number (integer or float) is equal to the specified integer value.
// Values are compared as integers if the compared and specified values are integers.
// Otherwise, numbers are always compared as floating point numbers.
//
// Example
//  v := 1
//  err := validator.ValidateNumber(&v, it.IsEqualToInteger(2))
func IsEqualToInteger(value int64) NumberComparisonConstraint {
	v := generic.NewNumberFromInt(value)

	return NumberComparisonConstraint{
		code:            code.Equal,
		messageTemplate: message.Equal,
		comparedValue:   v.String(),
		isValid: func(n generic.Number) bool {
			return n.IsEqualTo(v)
		},
	}
}

// IsEqualToFloat checks that the number (integer or float) is equal to the specified float value.
// Values are compared as integers if the compared and specified values are integers.
// Otherwise, numbers are always compared as floating point numbers.
//
// Example
//  v := 1.1
//  err := validator.ValidateNumber(&v, it.IsEqualToFloat(1.2))
func IsEqualToFloat(value float64) NumberComparisonConstraint {
	v := generic.NewNumberFromFloat(value)

	return NumberComparisonConstraint{
		code:            code.Equal,
		messageTemplate: message.Equal,
		comparedValue:   v.String(),
		isValid: func(n generic.Number) bool {
			return n.IsEqualTo(v)
		},
	}
}

// IsNotEqualToInteger checks that the number (integer or float) is not equal to the specified integer value.
// Values are compared as integers if the compared and specified values are integers.
// Otherwise, numbers are always compared as floating point numbers.
//
// Example
//  v := 1
//  err := validator.ValidateNumber(&v, it.IsNotEqualToInteger(1))
func IsNotEqualToInteger(value int64) NumberComparisonConstraint {
	v := generic.NewNumberFromInt(value)

	return NumberComparisonConstraint{
		code:            code.NotEqual,
		messageTemplate: message.NotEqual,
		comparedValue:   v.String(),
		isValid: func(n generic.Number) bool {
			return !n.IsEqualTo(v)
		},
	}
}

// IsNotEqualToFloat checks that the number (integer or float) is not equal to the specified float value.
// Values are compared as integers if the compared and specified values are integers.
// Otherwise, numbers are always compared as floating point numbers.
//
// Example
//  v := 1.1
//  err := validator.ValidateNumber(&v, it.IsNotEqualToFloat(1.1))
func IsNotEqualToFloat(value float64) NumberComparisonConstraint {
	v := generic.NewNumberFromFloat(value)

	return NumberComparisonConstraint{
		code:            code.NotEqual,
		messageTemplate: message.NotEqual,
		comparedValue:   v.String(),
		isValid: func(n generic.Number) bool {
			return !n.IsEqualTo(v)
		},
	}
}

// IsLessThanInteger checks that the number (integer or float) is less than the specified integer value.
// Values are compared as integers if the compared and specified values are integers.
// Otherwise, numbers are always compared as floating point numbers.
//
// Example
//  v := 1
//  err := validator.ValidateNumber(&v, it.IsLessThanInteger(1))
func IsLessThanInteger(value int64) NumberComparisonConstraint {
	v := generic.NewNumberFromInt(value)

	return NumberComparisonConstraint{
		code:            code.TooHigh,
		messageTemplate: message.TooHigh,
		comparedValue:   v.String(),
		isValid: func(n generic.Number) bool {
			return n.IsLessThan(v)
		},
	}
}

// IsLessThanFloat checks that the number (integer or float) is less than the specified float value.
// Values are compared as integers if the compared and specified values are integers.
// Otherwise, numbers are always compared as floating point numbers.
//
// Example
//  v := 1.1
//  err := validator.ValidateNumber(&v, it.IsLessThanFloat(1.1))
func IsLessThanFloat(value float64) NumberComparisonConstraint {
	v := generic.NewNumberFromFloat(value)

	return NumberComparisonConstraint{
		code:            code.TooHigh,
		messageTemplate: message.TooHigh,
		comparedValue:   v.String(),
		isValid: func(n generic.Number) bool {
			return n.IsLessThan(v)
		},
	}
}

// IsLessThanOrEqualInteger checks that the number (integer or float) is less than or
// equal to the specified integer value. Values are compared as integers if the compared
// and specified values are integers. Otherwise, numbers are always compared as floating point numbers.
//
// Example
//  v := 1
//  err := validator.ValidateNumber(&v, it.IsLessThanOrEqualInteger(2))
func IsLessThanOrEqualInteger(value int64) NumberComparisonConstraint {
	v := generic.NewNumberFromInt(value)

	return NumberComparisonConstraint{
		code:            code.TooHighOrEqual,
		messageTemplate: message.TooHighOrEqual,
		comparedValue:   v.String(),
		isValid: func(n generic.Number) bool {
			return n.IsLessThan(v) || n.IsEqualTo(v)
		},
	}
}

// IsLessThanOrEqualFloat checks that the number (integer or float) is less than or
// equal to the specified float value. Values are compared as integers if the compared
// and specified values are integers. Otherwise, numbers are always compared as floating point numbers.
//
// Example
//  v := 1.1
//  err := validator.ValidateNumber(&v, it.IsLessThanOrEqualFloat(1.2))
func IsLessThanOrEqualFloat(value float64) NumberComparisonConstraint {
	v := generic.NewNumberFromFloat(value)

	return NumberComparisonConstraint{
		code:            code.TooHighOrEqual,
		messageTemplate: message.TooHighOrEqual,
		comparedValue:   v.String(),
		isValid: func(n generic.Number) bool {
			return n.IsLessThan(v) || n.IsEqualTo(v)
		},
	}
}

// IsGreaterThanInteger checks that the number (integer or float) is greater than the specified integer value.
// Values are compared as integers if the compared and specified values are integers.
// Otherwise, numbers are always compared as floating point numbers.
//
// Example
//  v := 1
//  err := validator.ValidateNumber(&v, it.IsGreaterThanInteger(1))
func IsGreaterThanInteger(value int64) NumberComparisonConstraint {
	v := generic.NewNumberFromInt(value)

	return NumberComparisonConstraint{
		code:            code.TooLow,
		messageTemplate: message.TooLow,
		comparedValue:   v.String(),
		isValid: func(n generic.Number) bool {
			return n.IsGreaterThan(v)
		},
	}
}

// IsGreaterThanFloat checks that the number (integer or float) is greater than the specified float value.
// Values are compared as integers if the compared and specified values are integers.
// Otherwise, numbers are always compared as floating point numbers.
//
// Example
//  v := 1.1
//  err := validator.ValidateNumber(&v, it.IsGreaterThanFloat(1.1))
func IsGreaterThanFloat(value float64) NumberComparisonConstraint {
	v := generic.NewNumberFromFloat(value)

	return NumberComparisonConstraint{
		code:            code.TooLow,
		messageTemplate: message.TooLow,
		comparedValue:   v.String(),
		isValid: func(n generic.Number) bool {
			return n.IsGreaterThan(v)
		},
	}
}

// IsGreaterThanOrEqualInteger checks that the number (integer or float) is greater than or
// equal to the specified integer value. Values are compared as integers if the compared
// and specified values are integers. Otherwise, numbers are always compared as floating point numbers.
//
// Example
//  v := 1
//  err := validator.ValidateNumber(&v, it.IsGreaterThanOrEqualInteger(2))
func IsGreaterThanOrEqualInteger(value int64) NumberComparisonConstraint {
	v := generic.NewNumberFromInt(value)

	return NumberComparisonConstraint{
		code:            code.TooLowOrEqual,
		messageTemplate: message.TooLowOrEqual,
		comparedValue:   v.String(),
		isValid: func(n generic.Number) bool {
			return n.IsGreaterThan(v) || n.IsEqualTo(v)
		},
	}
}

// IsGreaterThanOrEqualFloat checks that the number (integer or float) is greater than or
// equal to the specified float value. Values are compared as integers if the compared
// and specified values are integers. Otherwise, numbers are always compared as floating point numbers.
//
// Example
//  v := 1.1
//  err := validator.ValidateNumber(&v, it.IsGreaterThanOrEqualFloat(1.2))
func IsGreaterThanOrEqualFloat(value float64) NumberComparisonConstraint {
	v := generic.NewNumberFromFloat(value)

	return NumberComparisonConstraint{
		code:            code.TooLowOrEqual,
		messageTemplate: message.TooLowOrEqual,
		comparedValue:   v.String(),
		isValid: func(n generic.Number) bool {
			return n.IsGreaterThan(v) || n.IsEqualTo(v)
		},
	}
}

// IsPositive checks that the value is a positive number (integer or float). Zero is neither
// positive nor negative. If you want to allow zero use IsPositiveOrZero comparison.
//
// Example
//  v := -1
//  err := validator.ValidateNumber(&v, it.IsPositive())
func IsPositive() NumberComparisonConstraint {
	v := generic.NewNumberFromInt(0)

	return NumberComparisonConstraint{
		code:            code.NotPositive,
		messageTemplate: message.NotPositive,
		comparedValue:   v.String(),
		isValid: func(n generic.Number) bool {
			return n.IsGreaterThan(v)
		},
	}
}

// IsPositiveOrZero checks that the value is a positive number (integer or float) or equal to zero.
// If you don't want to allow zero as a valid value, use IsPositive comparison.
//
// Example
//  v := -1
//  err := validator.ValidateNumber(&v, it.IsPositiveOrZero())
func IsPositiveOrZero() NumberComparisonConstraint {
	v := generic.NewNumberFromInt(0)

	return NumberComparisonConstraint{
		code:            code.NotPositiveOrZero,
		messageTemplate: message.NotPositiveOrZero,
		comparedValue:   v.String(),
		isValid: func(n generic.Number) bool {
			return n.IsGreaterThan(v) || n.IsEqualTo(v)
		},
	}
}

// IsNegative checks that the value is a negative number (integer or float). Zero is neither
// positive nor negative. If you want to allow zero use IsNegativeOrZero comparison.
//
// Example
//  v := 1
//  err := validator.ValidateNumber(&v, it.IsNegative())
func IsNegative() NumberComparisonConstraint {
	v := generic.NewNumberFromInt(0)

	return NumberComparisonConstraint{
		code:            code.NotNegative,
		messageTemplate: message.NotNegative,
		comparedValue:   v.String(),
		isValid: func(n generic.Number) bool {
			return n.IsLessThan(v)
		},
	}
}

// IsNegativeOrZero checks that the value is a negative number (integer or float) or equal to zero.
// If you don't want to allow zero as a valid value, use IsNegative comparison.
//
// Example
//  v := -1
//  err := validator.ValidateNumber(&v, it.IsNegativeOrZero())
func IsNegativeOrZero() NumberComparisonConstraint {
	v := generic.NewNumberFromInt(0)

	return NumberComparisonConstraint{
		code:            code.NotNegativeOrZero,
		messageTemplate: message.NotNegativeOrZero,
		comparedValue:   v.String(),
		isValid: func(n generic.Number) bool {
			return n.IsLessThan(v) || n.IsEqualTo(v)
		},
	}
}

// SetUp always returns no error.
func (c NumberComparisonConstraint) SetUp() error {
	return nil
}

// Name is the constraint name.
func (c NumberComparisonConstraint) Name() string {
	return "NumberComparisonConstraint"
}

// Message sets the violation message template. You can use template parameters
// for injecting its values into the final message:
//
//	{{ comparedValue }} - the expected value;
//	{{ value }} - the current (invalid) value.
func (c NumberComparisonConstraint) Message(message string) NumberComparisonConstraint {
	c.messageTemplate = message
	return c
}

// When enables conditional validation of this constraint. If the expression evaluates to false,
// then the constraint will be ignored.
func (c NumberComparisonConstraint) When(condition bool) NumberComparisonConstraint {
	c.isIgnored = !condition
	return c
}

func (c NumberComparisonConstraint) ValidateNumber(value generic.Number, scope validation.Scope) error {
	if c.isIgnored || value.IsNil() || c.isValid(value) {
		return nil
	}

	return scope.BuildViolation(c.code, c.messageTemplate).
		SetParameters([]validation.TemplateParameter{
			{Key: "{{ comparedValue }}", Value: c.comparedValue},
			{Key: "{{ value }}", Value: value.String()},
		}).
		CreateViolation()
}


1		package it
2
3		import (
4		"github.com/muonsoft/validation"
5		"github.com/muonsoft/validation/code"
6		"github.com/muonsoft/validation/generic"
7		"github.com/muonsoft/validation/message"
8		)
9
10		// NumberComparisonConstraint is used for various numeric comparisons between integer and float values.
11		// Values are compared as integers if the compared and specified values are integers.
12		// Otherwise, numbers are always compared as floating point numbers.
13		type NumberComparisonConstraint struct {
14		isIgnored bool
15		code string
16		messageTemplate string
17		comparedValue string
18		isValid func(value generic.Number) bool
19		}
20
21		// IsEqualToInteger checks that the number (integer or float) is equal to the specified integer value.
22		// Values are compared as integers if the compared and specified values are integers.
23		// Otherwise, numbers are always compared as floating point numbers.
24		//
25		// Example
26		// v := 1
27		// err := validator.ValidateNumber(&v, it.IsEqualToInteger(2))
28		func IsEqualToInteger(value int64) NumberComparisonConstraint {
29	1	v := generic.NewNumberFromInt(value)
30
31	1	return NumberComparisonConstraint{
32		code: code.Equal,
33		messageTemplate: message.Equal,
34		comparedValue: v.String(),
35		isValid: func(n generic.Number) bool {
36	1	return n.IsEqualTo(v)
37		},
38		}
39		}
40
41		// IsEqualToFloat checks that the number (integer or float) is equal to the specified float value.
42		// Values are compared as integers if the compared and specified values are integers.
43		// Otherwise, numbers are always compared as floating point numbers.
44		//
45		// Example
46		// v := 1.1
47		// err := validator.ValidateNumber(&v, it.IsEqualToFloat(1.2))
48		func IsEqualToFloat(value float64) NumberComparisonConstraint {
49	1	v := generic.NewNumberFromFloat(value)
50
51	1	return NumberComparisonConstraint{
52		code: code.Equal,
53		messageTemplate: message.Equal,
54		comparedValue: v.String(),
55		isValid: func(n generic.Number) bool {
56	1	return n.IsEqualTo(v)
57		},
58		}
59		}
60
61		// IsNotEqualToInteger checks that the number (integer or float) is not equal to the specified integer value.
62		// Values are compared as integers if the compared and specified values are integers.
63		// Otherwise, numbers are always compared as floating point numbers.
64		//
65		// Example
66		// v := 1
67		// err := validator.ValidateNumber(&v, it.IsNotEqualToInteger(1))
68		func IsNotEqualToInteger(value int64) NumberComparisonConstraint {
69	1	v := generic.NewNumberFromInt(value)
70
71	1	return NumberComparisonConstraint{
72		code: code.NotEqual,
73		messageTemplate: message.NotEqual,
74		comparedValue: v.String(),
75		isValid: func(n generic.Number) bool {
76	1	return !n.IsEqualTo(v)
77		},
78		}
79		}
80
81		// IsNotEqualToFloat checks that the number (integer or float) is not equal to the specified float value.
82		// Values are compared as integers if the compared and specified values are integers.
83		// Otherwise, numbers are always compared as floating point numbers.
84		//
85		// Example
86		// v := 1.1
87		// err := validator.ValidateNumber(&v, it.IsNotEqualToFloat(1.1))
88		func IsNotEqualToFloat(value float64) NumberComparisonConstraint {
89	1	v := generic.NewNumberFromFloat(value)
90
91	1	return NumberComparisonConstraint{
92		code: code.NotEqual,
93		messageTemplate: message.NotEqual,
94		comparedValue: v.String(),
95		isValid: func(n generic.Number) bool {
96	1	return !n.IsEqualTo(v)
97		},
98		}
99		}
100
101		// IsLessThanInteger checks that the number (integer or float) is less than the specified integer value.
102		// Values are compared as integers if the compared and specified values are integers.
103		// Otherwise, numbers are always compared as floating point numbers.
104		//
105		// Example
106		// v := 1
107		// err := validator.ValidateNumber(&v, it.IsLessThanInteger(1))
108		func IsLessThanInteger(value int64) NumberComparisonConstraint {
109	1	v := generic.NewNumberFromInt(value)
110
111	1	return NumberComparisonConstraint{
112		code: code.TooHigh,
113		messageTemplate: message.TooHigh,
114		comparedValue: v.String(),
115		isValid: func(n generic.Number) bool {
116	1	return n.IsLessThan(v)
117		},
118		}
119		}
120
121		// IsLessThanFloat checks that the number (integer or float) is less than the specified float value.
122		// Values are compared as integers if the compared and specified values are integers.
123		// Otherwise, numbers are always compared as floating point numbers.
124		//
125		// Example
126		// v := 1.1
127		// err := validator.ValidateNumber(&v, it.IsLessThanFloat(1.1))
128		func IsLessThanFloat(value float64) NumberComparisonConstraint {
129	1	v := generic.NewNumberFromFloat(value)
130
131	1	return NumberComparisonConstraint{
132		code: code.TooHigh,
133		messageTemplate: message.TooHigh,
134		comparedValue: v.String(),
135		isValid: func(n generic.Number) bool {
136	1	return n.IsLessThan(v)
137		},
138		}
139		}
140
141		// IsLessThanOrEqualInteger checks that the number (integer or float) is less than or
142		// equal to the specified integer value. Values are compared as integers if the compared
143		// and specified values are integers. Otherwise, numbers are always compared as floating point numbers.
144		//
145		// Example
146		// v := 1
147		// err := validator.ValidateNumber(&v, it.IsLessThanOrEqualInteger(2))
148		func IsLessThanOrEqualInteger(value int64) NumberComparisonConstraint {
149	1	v := generic.NewNumberFromInt(value)
150
151	1	return NumberComparisonConstraint{
152		code: code.TooHighOrEqual,
153		messageTemplate: message.TooHighOrEqual,
154		comparedValue: v.String(),
155		isValid: func(n generic.Number) bool {
156	1	return n.IsLessThan(v) \|\| n.IsEqualTo(v)
157		},
158		}
159		}
160
161		// IsLessThanOrEqualFloat checks that the number (integer or float) is less than or
162		// equal to the specified float value. Values are compared as integers if the compared
163		// and specified values are integers. Otherwise, numbers are always compared as floating point numbers.
164		//
165		// Example
166		// v := 1.1
167		// err := validator.ValidateNumber(&v, it.IsLessThanOrEqualFloat(1.2))
168		func IsLessThanOrEqualFloat(value float64) NumberComparisonConstraint {
169	1	v := generic.NewNumberFromFloat(value)
170
171	1	return NumberComparisonConstraint{
172		code: code.TooHighOrEqual,
173		messageTemplate: message.TooHighOrEqual,
174		comparedValue: v.String(),
175		isValid: func(n generic.Number) bool {
176	1	return n.IsLessThan(v) \|\| n.IsEqualTo(v)
177		},
178		}
179		}
180
181		// IsGreaterThanInteger checks that the number (integer or float) is greater than the specified integer value.
182		// Values are compared as integers if the compared and specified values are integers.
183		// Otherwise, numbers are always compared as floating point numbers.
184		//
185		// Example
186		// v := 1
187		// err := validator.ValidateNumber(&v, it.IsGreaterThanInteger(1))
188		func IsGreaterThanInteger(value int64) NumberComparisonConstraint {
189	1	v := generic.NewNumberFromInt(value)
190
191	1	return NumberComparisonConstraint{
192		code: code.TooLow,
193		messageTemplate: message.TooLow,
194		comparedValue: v.String(),
195		isValid: func(n generic.Number) bool {
196	1	return n.IsGreaterThan(v)
197		},
198		}
199		}
200
201		// IsGreaterThanFloat checks that the number (integer or float) is greater than the specified float value.
202		// Values are compared as integers if the compared and specified values are integers.
203		// Otherwise, numbers are always compared as floating point numbers.
204		//
205		// Example
206		// v := 1.1
207		// err := validator.ValidateNumber(&v, it.IsGreaterThanFloat(1.1))
208		func IsGreaterThanFloat(value float64) NumberComparisonConstraint {
209	1	v := generic.NewNumberFromFloat(value)
210
211	1	return NumberComparisonConstraint{
212		code: code.TooLow,
213		messageTemplate: message.TooLow,
214		comparedValue: v.String(),
215		isValid: func(n generic.Number) bool {
216	1	return n.IsGreaterThan(v)
217		},
218		}
219		}
220
221		// IsGreaterThanOrEqualInteger checks that the number (integer or float) is greater than or
222		// equal to the specified integer value. Values are compared as integers if the compared
223		// and specified values are integers. Otherwise, numbers are always compared as floating point numbers.
224		//
225		// Example
226		// v := 1
227		// err := validator.ValidateNumber(&v, it.IsGreaterThanOrEqualInteger(2))
228		func IsGreaterThanOrEqualInteger(value int64) NumberComparisonConstraint {
229	1	v := generic.NewNumberFromInt(value)
230
231	1	return NumberComparisonConstraint{
232		code: code.TooLowOrEqual,
233		messageTemplate: message.TooLowOrEqual,
234		comparedValue: v.String(),
235		isValid: func(n generic.Number) bool {
236	1	return n.IsGreaterThan(v) \|\| n.IsEqualTo(v)
237		},
238		}
239		}
240
241		// IsGreaterThanOrEqualFloat checks that the number (integer or float) is greater than or
242		// equal to the specified float value. Values are compared as integers if the compared
243		// and specified values are integers. Otherwise, numbers are always compared as floating point numbers.
244		//
245		// Example
246		// v := 1.1
247		// err := validator.ValidateNumber(&v, it.IsGreaterThanOrEqualFloat(1.2))
248		func IsGreaterThanOrEqualFloat(value float64) NumberComparisonConstraint {
249	1	v := generic.NewNumberFromFloat(value)
250
251	1	return NumberComparisonConstraint{
252		code: code.TooLowOrEqual,
253		messageTemplate: message.TooLowOrEqual,
254		comparedValue: v.String(),
255		isValid: func(n generic.Number) bool {
256	1	return n.IsGreaterThan(v) \|\| n.IsEqualTo(v)
257		},
258		}
259		}
260
261		// IsPositive checks that the value is a positive number (integer or float). Zero is neither
262		// positive nor negative. If you want to allow zero use IsPositiveOrZero comparison.
263		//
264		// Example
265		// v := -1
266		// err := validator.ValidateNumber(&v, it.IsPositive())
267		func IsPositive() NumberComparisonConstraint {
268	1	v := generic.NewNumberFromInt(0)
269
270	1	return NumberComparisonConstraint{
271		code: code.NotPositive,
272		messageTemplate: message.NotPositive,
273		comparedValue: v.String(),
274		isValid: func(n generic.Number) bool {
275	1	return n.IsGreaterThan(v)
276		},
277		}
278		}
279
280		// IsPositiveOrZero checks that the value is a positive number (integer or float) or equal to zero.
281		// If you don't want to allow zero as a valid value, use IsPositive comparison.
282		//
283		// Example
284		// v := -1
285		// err := validator.ValidateNumber(&v, it.IsPositiveOrZero())
286		func IsPositiveOrZero() NumberComparisonConstraint {
287	1	v := generic.NewNumberFromInt(0)
288
289	1	return NumberComparisonConstraint{
290		code: code.NotPositiveOrZero,
291		messageTemplate: message.NotPositiveOrZero,
292		comparedValue: v.String(),
293		isValid: func(n generic.Number) bool {
294	1	return n.IsGreaterThan(v) \|\| n.IsEqualTo(v)
295		},
296		}
297		}
298
299		// IsNegative checks that the value is a negative number (integer or float). Zero is neither
300		// positive nor negative. If you want to allow zero use IsNegativeOrZero comparison.
301		//
302		// Example
303		// v := 1
304		// err := validator.ValidateNumber(&v, it.IsNegative())
305		func IsNegative() NumberComparisonConstraint {
306	1	v := generic.NewNumberFromInt(0)
307
308	1	return NumberComparisonConstraint{
309		code: code.NotNegative,
310		messageTemplate: message.NotNegative,
311		comparedValue: v.String(),
312		isValid: func(n generic.Number) bool {
313	1	return n.IsLessThan(v)
314		},
315		}
316		}
317
318		// IsNegativeOrZero checks that the value is a negative number (integer or float) or equal to zero.
319		// If you don't want to allow zero as a valid value, use IsNegative comparison.
320		//
321		// Example
322		// v := -1
323		// err := validator.ValidateNumber(&v, it.IsNegativeOrZero())
324		func IsNegativeOrZero() NumberComparisonConstraint {
325	1	v := generic.NewNumberFromInt(0)
326
327	1	return NumberComparisonConstraint{
328		code: code.NotNegativeOrZero,
329		messageTemplate: message.NotNegativeOrZero,
330		comparedValue: v.String(),
331		isValid: func(n generic.Number) bool {
332	1	return n.IsLessThan(v) \|\| n.IsEqualTo(v)
333		},
334		}
335		}
336
337		// SetUp always returns no error.
338		func (c NumberComparisonConstraint) SetUp() error {
339	1	return nil
340		}
341
342		// Name is the constraint name.
343		func (c NumberComparisonConstraint) Name() string {
344		return "NumberComparisonConstraint"
345		}
346
347		// Message sets the violation message template. You can use template parameters
348		// for injecting its values into the final message:
349		//
350		// {{ comparedValue }} - the expected value;
351		// {{ value }} - the current (invalid) value.
352		func (c NumberComparisonConstraint) Message(message string) NumberComparisonConstraint {
353	1	c.messageTemplate = message
354	1	return c
355		}
356
357		// When enables conditional validation of this constraint. If the expression evaluates to false,
358		// then the constraint will be ignored.
359		func (c NumberComparisonConstraint) When(condition bool) NumberComparisonConstraint {
360	1	c.isIgnored = !condition
361	1	return c
362		}
363
364		func (c NumberComparisonConstraint) ValidateNumber(value generic.Number, scope validation.Scope) error {
365	1	if c.isIgnored \|\| value.IsNil() \|\| c.isValid(value) {
366	1	return nil
367		}
368
369	1	return scope.BuildViolation(c.code, c.messageTemplate).
370		SetParameters([]validation.TemplateParameter{
371		{Key: "{{ comparedValue }}", Value: c.comparedValue},
372		{Key: "{{ value }}", Value: value.String()},
373		}).
374		CreateViolation()
375		}
376

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