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-rw-r--r--vendor/google.golang.org/api/gensupport/jsonfloat.go57
1 files changed, 57 insertions, 0 deletions
diff --git a/vendor/google.golang.org/api/gensupport/jsonfloat.go b/vendor/google.golang.org/api/gensupport/jsonfloat.go
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1// Copyright 2016 Google LLC
2//
3// Licensed under the Apache License, Version 2.0 (the "License");
4// you may not use this file except in compliance with the License.
5// You may obtain a copy of the License at
6//
7// http://www.apache.org/licenses/LICENSE-2.0
8//
9// Unless required by applicable law or agreed to in writing, software
10// distributed under the License is distributed on an "AS IS" BASIS,
11// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12// See the License for the specific language governing permissions and
13// limitations under the License.
14
15package gensupport
16
17import (
18 "encoding/json"
19 "errors"
20 "fmt"
21 "math"
22)
23
24// JSONFloat64 is a float64 that supports proper unmarshaling of special float
25// values in JSON, according to
26// https://developers.google.com/protocol-buffers/docs/proto3#json. Although
27// that is a proto-to-JSON spec, it applies to all Google APIs.
28//
29// The jsonpb package
30// (https://github.com/golang/protobuf/blob/master/jsonpb/jsonpb.go) has
31// similar functionality, but only for direct translation from proto messages
32// to JSON.
33type JSONFloat64 float64
34
35func (f *JSONFloat64) UnmarshalJSON(data []byte) error {
36 var ff float64
37 if err := json.Unmarshal(data, &ff); err == nil {
38 *f = JSONFloat64(ff)
39 return nil
40 }
41 var s string
42 if err := json.Unmarshal(data, &s); err == nil {
43 switch s {
44 case "NaN":
45 ff = math.NaN()
46 case "Infinity":
47 ff = math.Inf(1)
48 case "-Infinity":
49 ff = math.Inf(-1)
50 default:
51 return fmt.Errorf("google.golang.org/api/internal: bad float string %q", s)
52 }
53 *f = JSONFloat64(ff)
54 return nil
55 }
56 return errors.New("google.golang.org/api/internal: data not float or string")
57}