terraform/terraform/eval_interpolate.go

package terraform

import "github.com/hashicorp/terraform/config"

// EvalInterpolate is an EvalNode implementation that takes a raw
// configuration and interpolates it.
type EvalInterpolate struct {
	Config   *config.RawConfig
	Resource *Resource
	Output   **ResourceConfig
}

func (n *EvalInterpolate) Eval(ctx EvalContext) (interface{}, error) {
	rc, err := ctx.Interpolate(n.Config, n.Resource)
	if err != nil {
		return nil, err
	}

	if n.Output != nil {
		*n.Output = rc
	}

	return nil, nil
}