vendor/github.com/zclconf/go-cty/cty/gocty/helpers.go

   1 package gocty
   2
   3 import (
   4         "math/big"
   5         "reflect"
   6
   7         "github.com/zclconf/go-cty/cty"
   8         "github.com/zclconf/go-cty/cty/set"
   9 )
  10
  11 var valueType = reflect.TypeOf(cty.Value{})
  12 var typeType = reflect.TypeOf(cty.Type{})
  13
  14 var setType = reflect.TypeOf(set.Set{})
  15
  16 var bigFloatType = reflect.TypeOf(big.Float{})
  17 var bigIntType = reflect.TypeOf(big.Int{})
  18
  19 var emptyInterfaceType = reflect.TypeOf(interface{}(nil))
  20
  21 var stringType = reflect.TypeOf("")
  22
  23 // structTagIndices interrogates the fields of the given type (which must
  24 // be a struct type, or we'll panic) and returns a map from the cty
  25 // attribute names declared via struct tags to the indices of the
  26 // fields holding those tags.
  27 //
  28 // This function will panic if two fields within the struct are tagged with
  29 // the same cty attribute name.
  30 func structTagIndices(st reflect.Type) map[string]int {
  31         ct := st.NumField()
  32         ret := make(map[string]int, ct)
  33
  34         for i := 0; i < ct; i++ {
  35                 field := st.Field(i)
  36                 attrName := field.Tag.Get("cty")
  37                 if attrName != "" {
  38                         ret[attrName] = i
  39                 }
  40         }
  41
  42         return ret
  43 }