111 lines
2.7 KiB
Go
111 lines
2.7 KiB
Go
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// Licensed to Elasticsearch B.V. under one or more contributor
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// license agreements. See the NOTICE file distributed with
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// this work for additional information regarding copyright
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// ownership. Elasticsearch B.V. licenses this file to you under
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// the Apache License, Version 2.0 (the "License"); you may
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// not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing,
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// software distributed under the License is distributed on an
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// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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// KIND, either express or implied. See the License for the
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// specific language governing permissions and limitations
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// under the License.
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package conditions
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import (
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"fmt"
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"math"
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"strconv"
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)
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// ExtractFloat extracts a float from an unknown type.
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func ExtractFloat(unk interface{}) (float64, error) {
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switch i := unk.(type) {
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case float64:
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return float64(i), nil
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case float32:
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return float64(i), nil
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case int64:
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return float64(i), nil
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case int32:
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return float64(i), nil
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case int16:
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return float64(i), nil
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case int8:
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return float64(i), nil
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case uint64:
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return float64(i), nil
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case uint32:
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return float64(i), nil
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case uint16:
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return float64(i), nil
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case uint8:
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return float64(i), nil
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case int:
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return float64(i), nil
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case uint:
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return float64(i), nil
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case string:
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f, err := strconv.ParseFloat(i, 64)
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if err != nil {
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return math.NaN(), err
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}
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return f, err
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default:
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return math.NaN(), fmt.Errorf("unknown type %T passed to ExtractFloat", unk)
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}
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}
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// ExtractInt extracts an int from an unknown type.
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func ExtractInt(unk interface{}) (uint64, error) {
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switch i := unk.(type) {
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case int64:
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return uint64(i), nil
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case int32:
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return uint64(i), nil
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case int16:
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return uint64(i), nil
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case int8:
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return uint64(i), nil
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case uint64:
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return uint64(i), nil
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case uint32:
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return uint64(i), nil
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case uint16:
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return uint64(i), nil
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case uint8:
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return uint64(i), nil
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case int:
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return uint64(i), nil
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case uint:
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return uint64(i), nil
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default:
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return 0, fmt.Errorf("unknown type %T passed to extractInt", unk)
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}
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}
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// ExtractString extracts a string from an unknown type.
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func ExtractString(unk interface{}) (string, error) {
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switch s := unk.(type) {
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case string:
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return s, nil
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default:
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return "", fmt.Errorf("unknown type %T passed to ExtractString", unk)
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}
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}
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// ExtractBool extracts a bool from an unknown type.
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func ExtractBool(unk interface{}) (bool, error) {
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switch b := unk.(type) {
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case bool:
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return b, nil
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default:
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return false, fmt.Errorf("unknown type %T passed to ExtractBool", unk)
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}
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}
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