forked from benthosdev/benthos
/
methods_numbers.go
259 lines (250 loc) · 6.12 KB
/
methods_numbers.go
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package query
import (
"errors"
"fmt"
"math"
)
var _ = registerSimpleMethod(
NewMethodSpec("abs", "Returns the absolute value of a number.").InCategory(
MethodCategoryNumbers, "",
NewExampleSpec("",
`root.new_value = this.value.abs()`,
`{"value":5.3}`,
`{"new_value":5.3}`,
`{"value":-5.9}`,
`{"new_value":5.9}`,
),
),
func(*ParsedParams) (simpleMethod, error) {
return numberMethod(func(f *float64, i *int64, ui *uint64) (any, error) {
var v float64
if f != nil {
v = *f
} else if i != nil {
v = float64(*i)
} else {
v = float64(*ui)
}
return math.Abs(v), nil
}), nil
},
)
var _ = registerSimpleMethod(
NewMethodSpec("ceil", "Returns the least integer value greater than or equal to a number. If the resulting value fits within a 64-bit integer then that is returned, otherwise a new floating point number is returned.").InCategory(
MethodCategoryNumbers, "",
NewExampleSpec("",
`root.new_value = this.value.ceil()`,
`{"value":5.3}`,
`{"new_value":6}`,
`{"value":-5.9}`,
`{"new_value":-5}`,
),
),
func(*ParsedParams) (simpleMethod, error) {
return numberMethod(func(f *float64, i *int64, ui *uint64) (any, error) {
if f != nil {
ceiled := math.Ceil(*f)
if i, err := IToInt(ceiled); err == nil {
return i, nil
}
return ceiled, nil
}
if i != nil {
return *i, nil
}
return *ui, nil
}), nil
},
)
var _ = registerSimpleMethod(
NewMethodSpec(
"floor", "Returns the greatest integer value less than or equal to the target number. If the resulting value fits within a 64-bit integer then that is returned, otherwise a new floating point number is returned.",
).InCategory(
MethodCategoryNumbers,
"",
NewExampleSpec("",
`root.new_value = this.value.floor()`,
`{"value":5.7}`,
`{"new_value":5}`,
),
),
func(*ParsedParams) (simpleMethod, error) {
return numberMethod(func(f *float64, i *int64, ui *uint64) (any, error) {
if f != nil {
floored := math.Floor(*f)
if i, err := IToInt(floored); err == nil {
return i, nil
}
return floored, nil
}
if i != nil {
return *i, nil
}
return *ui, nil
}), nil
},
)
var _ = registerSimpleMethod(
NewMethodSpec("log", "Returns the natural logarithm of a number.").InCategory(
MethodCategoryNumbers, "",
NewExampleSpec("",
`root.new_value = this.value.log().round()`,
`{"value":1}`,
`{"new_value":0}`,
`{"value":2.7183}`,
`{"new_value":1}`,
),
),
func(*ParsedParams) (simpleMethod, error) {
return numberMethod(func(f *float64, i *int64, ui *uint64) (any, error) {
var v float64
if f != nil {
v = *f
} else if i != nil {
v = float64(*i)
} else {
v = float64(*ui)
}
return math.Log(v), nil
}), nil
},
)
var _ = registerSimpleMethod(
NewMethodSpec("log10", "Returns the decimal logarithm of a number.").InCategory(
MethodCategoryNumbers, "",
NewExampleSpec("",
`root.new_value = this.value.log10()`,
`{"value":100}`,
`{"new_value":2}`,
`{"value":1000}`,
`{"new_value":3}`,
),
),
func(*ParsedParams) (simpleMethod, error) {
return numberMethod(func(f *float64, i *int64, ui *uint64) (any, error) {
var v float64
if f != nil {
v = *f
} else if i != nil {
v = float64(*i)
} else {
v = float64(*ui)
}
return math.Log10(v), nil
}), nil
},
)
var _ = registerSimpleMethod(
NewMethodSpec(
"max",
"Returns the largest numerical value found within an array. All values must be numerical and the array must not be empty, otherwise an error is returned.",
).InCategory(
MethodCategoryNumbers, "",
NewExampleSpec("",
`root.biggest = this.values.max()`,
`{"values":[0,3,2.5,7,5]}`,
`{"biggest":7}`,
),
NewExampleSpec("",
`root.new_value = [0,this.value].max()`,
`{"value":-1}`,
`{"new_value":0}`,
`{"value":7}`,
`{"new_value":7}`,
),
),
func(*ParsedParams) (simpleMethod, error) {
return func(v any, ctx FunctionContext) (any, error) {
arr, ok := v.([]any)
if !ok {
return nil, NewTypeError(v, ValueArray)
}
if len(arr) == 0 {
return nil, errors.New("the array was empty")
}
var max float64
for i, n := range arr {
f, err := IGetNumber(n)
if err != nil {
return nil, fmt.Errorf("index %v of array: %w", i, err)
}
if i == 0 || f > max {
max = f
}
}
return max, nil
}, nil
},
)
var _ = registerSimpleMethod(
NewMethodSpec(
"min",
"Returns the smallest numerical value found within an array. All values must be numerical and the array must not be empty, otherwise an error is returned.",
).InCategory(
MethodCategoryNumbers, "",
NewExampleSpec("",
`root.smallest = this.values.min()`,
`{"values":[0,3,-2.5,7,5]}`,
`{"smallest":-2.5}`,
),
NewExampleSpec("",
`root.new_value = [10,this.value].min()`,
`{"value":2}`,
`{"new_value":2}`,
`{"value":23}`,
`{"new_value":10}`,
),
),
func(*ParsedParams) (simpleMethod, error) {
return func(v any, ctx FunctionContext) (any, error) {
arr, ok := v.([]any)
if !ok {
return nil, NewTypeError(v, ValueArray)
}
if len(arr) == 0 {
return nil, errors.New("the array was empty")
}
var max float64
for i, n := range arr {
f, err := IGetNumber(n)
if err != nil {
return nil, fmt.Errorf("index %v of array: %w", i, err)
}
if i == 0 || f < max {
max = f
}
}
return max, nil
}, nil
},
)
var _ = registerSimpleMethod(
NewMethodSpec(
"round", "Rounds numbers to the nearest integer, rounding half away from zero. If the resulting value fits within a 64-bit integer then that is returned, otherwise a new floating point number is returned.",
).InCategory(
MethodCategoryNumbers,
"",
NewExampleSpec("",
`root.new_value = this.value.round()`,
`{"value":5.3}`,
`{"new_value":5}`,
`{"value":5.9}`,
`{"new_value":6}`,
),
),
func(*ParsedParams) (simpleMethod, error) {
return numberMethod(func(f *float64, i *int64, ui *uint64) (any, error) {
if f != nil {
rounded := math.Round(*f)
if i, err := IToInt(rounded); err == nil {
return i, nil
}
return rounded, nil
}
if i != nil {
return *i, nil
}
return *ui, nil
}), nil
},
)