consul/vendor/github.com/hashicorp/go-bexpr/coerce.go

136 lines
4.3 KiB
Go

package bexpr
import (
"reflect"
"strconv"
)
// CoerceInt conforms to the FieldValueCoercionFn signature
// and can be used to convert the raw string value of
// an expression into an `int`
func CoerceInt(value string) (interface{}, error) {
i, err := strconv.ParseInt(value, 0, 0)
return int(i), err
}
// CoerceInt8 conforms to the FieldValueCoercionFn signature
// and can be used to convert the raw string value of
// an expression into an `int8`
func CoerceInt8(value string) (interface{}, error) {
i, err := strconv.ParseInt(value, 0, 8)
return int8(i), err
}
// CoerceInt16 conforms to the FieldValueCoercionFn signature
// and can be used to convert the raw string value of
// an expression into an `int16`
func CoerceInt16(value string) (interface{}, error) {
i, err := strconv.ParseInt(value, 0, 16)
return int16(i), err
}
// CoerceInt32 conforms to the FieldValueCoercionFn signature
// and can be used to convert the raw string value of
// an expression into an `int32`
func CoerceInt32(value string) (interface{}, error) {
i, err := strconv.ParseInt(value, 0, 32)
return int32(i), err
}
// CoerceInt64 conforms to the FieldValueCoercionFn signature
// and can be used to convert the raw string value of
// an expression into an `int64`
func CoerceInt64(value string) (interface{}, error) {
i, err := strconv.ParseInt(value, 0, 64)
return int64(i), err
}
// CoerceUint conforms to the FieldValueCoercionFn signature
// and can be used to convert the raw string value of
// an expression into an `int`
func CoerceUint(value string) (interface{}, error) {
i, err := strconv.ParseUint(value, 0, 0)
return uint(i), err
}
// CoerceUint8 conforms to the FieldValueCoercionFn signature
// and can be used to convert the raw string value of
// an expression into an `int8`
func CoerceUint8(value string) (interface{}, error) {
i, err := strconv.ParseUint(value, 0, 8)
return uint8(i), err
}
// CoerceUint16 conforms to the FieldValueCoercionFn signature
// and can be used to convert the raw string value of
// an expression into an `int16`
func CoerceUint16(value string) (interface{}, error) {
i, err := strconv.ParseUint(value, 0, 16)
return uint16(i), err
}
// CoerceUint32 conforms to the FieldValueCoercionFn signature
// and can be used to convert the raw string value of
// an expression into an `int32`
func CoerceUint32(value string) (interface{}, error) {
i, err := strconv.ParseUint(value, 0, 32)
return uint32(i), err
}
// CoerceUint64 conforms to the FieldValueCoercionFn signature
// and can be used to convert the raw string value of
// an expression into an `int64`
func CoerceUint64(value string) (interface{}, error) {
i, err := strconv.ParseUint(value, 0, 64)
return uint64(i), err
}
// CoerceBool conforms to the FieldValueCoercionFn signature
// and can be used to convert the raw string value of
// an expression into a `bool`
func CoerceBool(value string) (interface{}, error) {
return strconv.ParseBool(value)
}
// CoerceFloat32 conforms to the FieldValueCoercionFn signature
// and can be used to convert the raw string value of
// an expression into an `float32`
func CoerceFloat32(value string) (interface{}, error) {
// ParseFloat always returns a float64 but ensures
// it can be converted to a float32 without changing
// its value
f, err := strconv.ParseFloat(value, 32)
return float32(f), err
}
// CoerceFloat64 conforms to the FieldValueCoercionFn signature
// and can be used to convert the raw string value of
// an expression into an `float64`
func CoerceFloat64(value string) (interface{}, error) {
return strconv.ParseFloat(value, 64)
}
// CoerceString conforms to the FieldValueCoercionFn signature
// and can be used to convert the raw string value of
// an expression into a `string`
func CoerceString(value string) (interface{}, error) {
return value, nil
}
var primitiveCoercionFns = map[reflect.Kind]FieldValueCoercionFn{
reflect.Bool: CoerceBool,
reflect.Int: CoerceInt,
reflect.Int8: CoerceInt8,
reflect.Int16: CoerceInt16,
reflect.Int32: CoerceInt32,
reflect.Int64: CoerceInt64,
reflect.Uint: CoerceUint,
reflect.Uint8: CoerceUint8,
reflect.Uint16: CoerceUint16,
reflect.Uint32: CoerceUint32,
reflect.Uint64: CoerceUint64,
reflect.Float32: CoerceFloat32,
reflect.Float64: CoerceFloat64,
reflect.String: CoerceString,
}