opentofu/terraform/eval_sequence.go
Martin Atkins 798adf3ce6 core: EvalSequence to handle EvalEarlyExitError
An earlier commit today reworked this to handle non-fatal errors, which
are returned "smuggled" as a special type of error to avoid changing the
EvalNode interface.

Unfortunately, that change then broke the _other_ special thing we smuggle
through the error return path: early exit.

Now we'll handle them both. This is not perfect because the early-exit
path causes us to discard any warnings we've already collected, but it's
more important that we bail early than retain warnings.
2018-10-16 18:49:20 -07:00

43 lines
888 B
Go

package terraform
import (
"github.com/hashicorp/terraform/tfdiags"
)
// EvalSequence is an EvalNode that evaluates in sequence.
type EvalSequence struct {
Nodes []EvalNode
}
func (n *EvalSequence) Eval(ctx EvalContext) (interface{}, error) {
var diags tfdiags.Diagnostics
for _, n := range n.Nodes {
if n == nil {
continue
}
if _, err := EvalRaw(n, ctx); err != nil {
if _, isEarlyExit := err.(EvalEarlyExitError); isEarlyExit {
// In this path we abort early, losing any non-error
// diagnostics we saw earlier.
return nil, err
}
diags = diags.Append(err)
if diags.HasErrors() {
// Halt if we get some errors, but warnings are okay.
break
}
}
}
return nil, diags.ErrWithWarnings()
}
// EvalNodeFilterable impl.
func (n *EvalSequence) Filter(fn EvalNodeFilterFunc) {
for i, node := range n.Nodes {
n.Nodes[i] = fn(node)
}
}