/
constant.gen.go
129 lines (109 loc) · 2.69 KB
/
constant.gen.go
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// Generated by tmpl
// https://github.com/benbjohnson/tmpl
//
// DO NOT EDIT!
// Source: constant.gen.go.tmpl
package arrowutil
import (
"fmt"
"github.com/influxdata/flux/array"
)
func IsConstant(arr array.Array) bool {
switch arr := arr.(type) {
case *array.Int:
return IsIntConstant(arr)
case *array.Uint:
return IsUintConstant(arr)
case *array.Float:
return IsFloatConstant(arr)
case *array.Boolean:
return IsBooleanConstant(arr)
case *array.String:
return IsStringConstant(arr)
default:
panic(fmt.Errorf("unsupported array datat ype: %s", arr.DataType()))
}
}
func IsIntConstant(arr *array.Int) bool {
// If all values are null, then that is still constant.
if arr.NullN() == arr.Len() {
return true
} else if arr.NullN() > 0 {
// At least one value is null, but not all so
// not constant by definition.
return false
}
// All values are non-null so check if they are all the same.
v := arr.Value(0)
for i, n := 1, arr.Len(); i < n; i++ {
if arr.Value(i) != v {
return false
}
}
return true
}
func IsUintConstant(arr *array.Uint) bool {
// If all values are null, then that is still constant.
if arr.NullN() == arr.Len() {
return true
} else if arr.NullN() > 0 {
// At least one value is null, but not all so
// not constant by definition.
return false
}
// All values are non-null so check if they are all the same.
v := arr.Value(0)
for i, n := 1, arr.Len(); i < n; i++ {
if arr.Value(i) != v {
return false
}
}
return true
}
func IsFloatConstant(arr *array.Float) bool {
// If all values are null, then that is still constant.
if arr.NullN() == arr.Len() {
return true
} else if arr.NullN() > 0 {
// At least one value is null, but not all so
// not constant by definition.
return false
}
// All values are non-null so check if they are all the same.
v := arr.Value(0)
for i, n := 1, arr.Len(); i < n; i++ {
if arr.Value(i) != v {
return false
}
}
return true
}
func IsBooleanConstant(arr *array.Boolean) bool {
// If all values are null, then that is still constant.
if arr.NullN() == arr.Len() {
return true
} else if arr.NullN() > 0 {
// At least one value is null, but not all so
// not constant by definition.
return false
}
// All values are non-null so check if they are all the same.
v := arr.Value(0)
for i, n := 1, arr.Len(); i < n; i++ {
if arr.Value(i) != v {
return false
}
}
return true
}
func IsStringConstant(arr *array.String) bool {
// If all values are null, then that is still constant.
if arr.NullN() == arr.Len() {
return true
} else if arr.NullN() > 0 {
// At least one value is null, but not all so
// not constant by definition.
return false
}
return arr.IsConstant()
}