98 lines
3.1 KiB
Go
98 lines
3.1 KiB
Go
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package dynamic
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import (
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"fmt"
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"io"
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"reflect"
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"unsafe"
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"git.qtrade.icu/lychiyu/bbgo/pkg/util"
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)
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// @param s: strategy object
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// @param f: io.Writer used for writing the strategy dump
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// @param seriesLength: if exist, the first value will be chosen to be the length of data from series to be printed out
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//
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// default to 1 when not exist or the value is invalid
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func ParamDump(s interface{}, f io.Writer, seriesLength ...int) {
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length := 1
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if len(seriesLength) > 0 && seriesLength[0] > 0 {
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length = seriesLength[0]
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}
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val := reflect.ValueOf(s)
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if val.Type().Kind() == util.Pointer {
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val = val.Elem()
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}
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for i := 0; i < val.Type().NumField(); i++ {
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t := val.Type().Field(i)
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if ig := t.Tag.Get("ignore"); ig == "true" {
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continue
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}
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field := val.Field(i)
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if t.IsExported() || t.Anonymous || t.Type.Kind() == reflect.Func || t.Type.Kind() == reflect.Chan {
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continue
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}
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fieldName := t.Name
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typeName := field.Type().String()
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value := reflect.NewAt(field.Type(), unsafe.Pointer(field.UnsafeAddr())).Elem()
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isSeries := true
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lastFunc := value.MethodByName("Last")
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isSeries = isSeries && lastFunc.IsValid()
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lengthFunc := value.MethodByName("Length")
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isSeries = isSeries && lengthFunc.IsValid()
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indexFunc := value.MethodByName("Index")
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isSeries = isSeries && indexFunc.IsValid()
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stringFunc := value.MethodByName("String")
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canString := stringFunc.IsValid()
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if isSeries {
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l := int(lengthFunc.Call(nil)[0].Int())
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if l >= length {
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fmt.Fprintf(f, "%s: Series[..., %.4f", fieldName, indexFunc.Call([]reflect.Value{reflect.ValueOf(length - 1)})[0].Float())
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for j := length - 2; j >= 0; j-- {
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fmt.Fprintf(f, ", %.4f", indexFunc.Call([]reflect.Value{reflect.ValueOf(j)})[0].Float())
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}
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fmt.Fprintf(f, "]\n")
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} else if l > 0 {
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fmt.Fprintf(f, "%s: Series[%.4f", fieldName, indexFunc.Call([]reflect.Value{reflect.ValueOf(l - 1)})[0].Float())
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for j := l - 2; j >= 0; j-- {
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fmt.Fprintf(f, ", %.4f", indexFunc.Call([]reflect.Value{reflect.ValueOf(j)})[0].Float())
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}
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fmt.Fprintf(f, "]\n")
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} else {
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fmt.Fprintf(f, "%s: Series[]\n", fieldName)
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}
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} else if canString {
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fmt.Fprintf(f, "%s: %s\n", fieldName, stringFunc.Call(nil)[0].String())
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} else if CanInt(field) {
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fmt.Fprintf(f, "%s: %d\n", fieldName, field.Int())
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} else if field.CanConvert(reflect.TypeOf(float64(0))) {
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fmt.Fprintf(f, "%s: %.4f\n", fieldName, field.Float())
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} else if field.CanInterface() {
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fmt.Fprintf(f, "%s: %v", fieldName, field.Interface())
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} else if field.Type().Kind() == reflect.Map {
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fmt.Fprintf(f, "%s: {", fieldName)
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iter := value.MapRange()
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for iter.Next() {
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k := iter.Key().Interface()
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v := iter.Value().Interface()
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fmt.Fprintf(f, "%v: %v, ", k, v)
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}
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fmt.Fprintf(f, "}\n")
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} else if field.Type().Kind() == reflect.Slice {
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fmt.Fprintf(f, "%s: [", fieldName)
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l := field.Len()
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if l > 0 {
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fmt.Fprintf(f, "%v", field.Index(0))
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}
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for j := 1; j < field.Len(); j++ {
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fmt.Fprintf(f, ", %v", field.Index(j))
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}
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fmt.Fprintf(f, "]\n")
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} else {
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fmt.Fprintf(f, "%s(%s): %s\n", fieldName, typeName, field.String())
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}
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}
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}
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