mirror of
https://github.com/letic/terraform-provider-google.git
synced 2024-09-20 18:19:59 +00:00
30 lines
740 B
Go
30 lines
740 B
Go
package hil
|
|
|
|
import (
|
|
"github.com/hashicorp/hil/ast"
|
|
)
|
|
|
|
// FixedValueTransform transforms an AST to return a fixed value for
|
|
// all interpolations. i.e. you can make "hi ${anything}" always
|
|
// turn into "hi foo".
|
|
//
|
|
// The primary use case for this is for config validations where you can
|
|
// verify that interpolations result in a certain type of string.
|
|
func FixedValueTransform(root ast.Node, Value *ast.LiteralNode) ast.Node {
|
|
// We visit the nodes in top-down order
|
|
result := root
|
|
switch n := result.(type) {
|
|
case *ast.Output:
|
|
for i, v := range n.Exprs {
|
|
n.Exprs[i] = FixedValueTransform(v, Value)
|
|
}
|
|
case *ast.LiteralNode:
|
|
// We keep it as-is
|
|
default:
|
|
// Anything else we replace
|
|
result = Value
|
|
}
|
|
|
|
return result
|
|
}
|