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value.go
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/
value.go
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package dynaml
import (
"fmt"
"github.com/mandelsoft/spiff/yaml"
"strconv"
)
type ValueExpr struct {
Value interface{}
}
func (e ValueExpr) String() string {
return ValueAsString(e.Value, true)
}
func (e ValueExpr) Evaluate(binding Binding, locally bool) (interface{}, EvaluationInfo, bool) {
return e.Value, DefaultInfo(), true
}
func ValueAsString(val interface{}, all bool) string {
switch v := val.(type) {
case []yaml.Node:
s := "["
sep := ""
for _, e := range v {
s = fmt.Sprintf("%s%s%s", s, sep, ValueAsString(e.Value(), all))
sep = ", "
}
return s + "]"
case map[string]yaml.Node:
s := "{"
sep := ""
for _, k := range getSortedKeys(v) {
if all || k != "_" {
s = fmt.Sprintf("%s%s\"%s\"=%s", s, sep, k, ValueAsString(v[k].Value(), all))
sep = ", "
}
}
return s + "}"
case string:
return fmt.Sprintf("\"%s\"", v)
case int64:
return strconv.FormatInt(v, 10)
case float64:
return strconv.FormatFloat(v, 'g', -1, 64)
case bool:
return strconv.FormatBool(v)
default:
return fmt.Sprintf("%s", v)
}
}