48 lines
884 B
Go
48 lines
884 B
Go
package builtin
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import (
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"encoding/json"
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"git.xdrm.io/go/aicra/datatype"
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)
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// FloatDataType is what its name tells
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type FloatDataType struct{}
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// Build returns the validator
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func (FloatDataType) Build(typeName string) datatype.Validator {
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// nothing if type not handled
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if typeName != "float64" && typeName != "float" {
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return nil
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}
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return func(value interface{}) (interface{}, bool) {
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switch cast := value.(type) {
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case int:
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return float64(cast), true
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case uint:
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return float64(cast), true
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case float64:
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return cast, true
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// serialized string -> try to convert to float
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case []byte:
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num := json.Number(cast)
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floatVal, err := num.Float64()
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return floatVal, err == nil
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case string:
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num := json.Number(cast)
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floatVal, err := num.Float64()
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return floatVal, err == nil
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// unknown type
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default:
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return 0, false
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}
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}
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}
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