mirror of
https://github.com/d0zingcat/gocryptotrader.git
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9a4eb9de84
* Bump CI versions * Specifically set go version as 1.17.x bumps it to 1.18 * Another * Adjust AppVeyor * Part 1 of linter issues * Part 2 * Fix various linters and improvements * Part 3 * Finishing touches * Tests and EqualFold * Fix nitterinos plus bonus requester jobs bump for exchanges with large number of tests * Fix nitterinos and bump golangci-lint timeout for AppVeyor * Address nits, ensure all books are returned on err due to syncer regression * Fix the wiggins * Fix duplication * Fix nitterinos
82 lines
2.0 KiB
Go
82 lines
2.0 KiB
Go
package indicators
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import (
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"errors"
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"fmt"
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"strings"
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objects "github.com/d5/tengo/v2"
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"github.com/thrasher-corp/gct-ta/indicators"
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"github.com/thrasher-corp/gocryptotrader/gctscript/modules"
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"github.com/thrasher-corp/gocryptotrader/gctscript/wrappers/validator"
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)
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// SMAModule simple moving average indicator commands
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var SMAModule = map[string]objects.Object{
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"calculate": &objects.UserFunction{Name: "calculate", Value: sma},
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}
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// SimpleMovingAverage is the string constant
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const SimpleMovingAverage = "Simple Moving Average"
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// SMA defines a custom Simple Moving Average indicator tengo object type
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type SMA struct {
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objects.Array
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Period int
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}
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// TypeName returns the name of the custom type.
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func (o *SMA) TypeName() string {
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return SimpleMovingAverage
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}
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func sma(args ...objects.Object) (objects.Object, error) {
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if len(args) != 2 {
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return nil, objects.ErrWrongNumArguments
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}
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r := new(SMA)
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if validator.IsTestExecution.Load() == true {
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return r, nil
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}
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ohlcvInput := objects.ToInterface(args[0])
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ohlcvInputData, valid := ohlcvInput.([]interface{})
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if !valid {
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return nil, fmt.Errorf(modules.ErrParameterConvertFailed, OHLCV)
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}
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ohlcvClose := make([]float64, len(ohlcvInputData))
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var allErrors []string
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for x := range ohlcvInputData {
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t, ok := ohlcvInputData[x].([]interface{})
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if !ok {
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return nil, errors.New("unable to type assert ohlcvInputData")
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}
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if len(t) < 5 {
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return nil, errors.New("ohlcvInputData invalid data length")
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}
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value, err := toFloat64(t[4])
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if err != nil {
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allErrors = append(allErrors, err.Error())
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}
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ohlcvClose[x] = value
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}
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inTimePeriod, ok := objects.ToInt(args[1])
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if !ok {
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allErrors = append(allErrors, fmt.Sprintf(modules.ErrParameterConvertFailed, inTimePeriod))
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}
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if len(allErrors) > 0 {
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return nil, errors.New(strings.Join(allErrors, ", "))
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}
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r.Period = inTimePeriod
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ret := indicators.SMA(ohlcvClose, inTimePeriod)
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for x := range ret {
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r.Value = append(r.Value, &objects.Float{Value: ret[x]})
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}
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return r, nil
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}
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