44 lines
1.5 KiB
Go
44 lines
1.5 KiB
Go
package dynblock
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import (
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"github.com/hashicorp/hcl/v2"
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"github.com/hashicorp/hcl/v2/hcldec"
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)
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// VariablesHCLDec is a wrapper around WalkVariables that uses the given hcldec
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// specification to automatically drive the recursive walk through nested
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// blocks in the given body.
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//
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// This is a drop-in replacement for hcldec.Variables which is able to treat
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// blocks of type "dynamic" in the same special way that dynblock.Expand would,
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// exposing both the variables referenced in the "for_each" and "labels"
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// arguments and variables used in the nested "content" block.
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func VariablesHCLDec(body hcl.Body, spec hcldec.Spec) []hcl.Traversal {
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rootNode := WalkVariables(body)
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return walkVariablesWithHCLDec(rootNode, spec)
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}
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// ExpandVariablesHCLDec is like VariablesHCLDec but it includes only the
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// minimal set of variables required to call Expand, ignoring variables that
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// are referenced only inside normal block contents. See WalkExpandVariables
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// for more information.
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func ExpandVariablesHCLDec(body hcl.Body, spec hcldec.Spec) []hcl.Traversal {
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rootNode := WalkExpandVariables(body)
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return walkVariablesWithHCLDec(rootNode, spec)
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}
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func walkVariablesWithHCLDec(node WalkVariablesNode, spec hcldec.Spec) []hcl.Traversal {
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vars, children := node.Visit(hcldec.ImpliedSchema(spec))
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if len(children) > 0 {
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childSpecs := hcldec.ChildBlockTypes(spec)
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for _, child := range children {
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if childSpec, exists := childSpecs[child.BlockTypeName]; exists {
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vars = append(vars, walkVariablesWithHCLDec(child.Node, childSpec)...)
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}
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}
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}
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return vars
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}
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