Merge pull request #71 from kolo/is_zero
Support versions of Go < 1.13
Ilia Choly authored 4 years ago
GitHub committed 4 years ago
| 95 | 95 |
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| 96 | 96 |
name := fieldType.Tag.Get("xmlrpc")
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| 97 | 97 |
// if the tag has the omitempty property, skip it
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if strings.HasSuffix(name, ",omitempty") && fieldVal.IsZero() {
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if strings.HasSuffix(name, ",omitempty") && isZero(fieldVal) {
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| 99 | 99 |
continue
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| 100 | 100 |
}
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| 101 | 101 |
name = strings.TrimSuffix(name, ",omitempty")
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package xmlrpc
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import (
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"math"
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. "reflect"
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)
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func isZero(v Value) bool {
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switch v.Kind() {
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case Bool:
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return !v.Bool()
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case Int, Int8, Int16, Int32, Int64:
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return v.Int() == 0
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case Uint, Uint8, Uint16, Uint32, Uint64, Uintptr:
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return v.Uint() == 0
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case Float32, Float64:
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return math.Float64bits(v.Float()) == 0
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case Complex64, Complex128:
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c := v.Complex()
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return math.Float64bits(real(c)) == 0 && math.Float64bits(imag(c)) == 0
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case Array:
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for i := 0; i < v.Len(); i++ {
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if !isZero(v.Index(i)) {
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return false
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}
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}
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return true
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case Chan, Func, Interface, Map, Ptr, Slice, UnsafePointer:
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return v.IsNil()
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case String:
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return v.Len() == 0
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case Struct:
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for i := 0; i < v.NumField(); i++ {
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if !isZero(v.Field(i)) {
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return false
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}
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}
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return true
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default:
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// This should never happens, but will act as a safeguard for
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// later, as a default value doesn't makes sense here.
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panic(&ValueError{"reflect.Value.IsZero", v.Kind()})
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}
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}
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