44 lines
1.8 KiB
Go
44 lines
1.8 KiB
Go
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package blocktoattr
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import (
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"github.com/hashicorp/hcl2/ext/dynblock"
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"github.com/hashicorp/hcl2/hcl"
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"github.com/hashicorp/hcl2/hcldec"
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"github.com/hashicorp/terraform/configs/configschema"
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)
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// ExpandedVariables finds all of the global variables referenced in the
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// given body with the given schema while taking into account the possibilities
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// both of "dynamic" blocks being expanded and the possibility of certain
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// attributes being written instead as nested blocks as allowed by the
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// FixUpBlockAttrs function.
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//
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// This function exists to allow variables to be analyzed prior to dynamic
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// block expansion while also dealing with the fact that dynamic block expansion
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// might in turn produce nested blocks that are subject to FixUpBlockAttrs.
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//
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// This is intended as a drop-in replacement for dynblock.VariablesHCLDec,
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// which is itself a drop-in replacement for hcldec.Variables.
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func ExpandedVariables(body hcl.Body, schema *configschema.Block) []hcl.Traversal {
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rootNode := dynblock.WalkVariables(body)
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return walkVariables(rootNode, body, schema)
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}
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func walkVariables(node dynblock.WalkVariablesNode, body hcl.Body, schema *configschema.Block) []hcl.Traversal {
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givenRawSchema := hcldec.ImpliedSchema(schema.DecoderSpec())
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ambiguousNames := ambiguousNames(schema)
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effectiveRawSchema := effectiveSchema(givenRawSchema, body, ambiguousNames, false)
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vars, children := node.Visit(effectiveRawSchema)
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for _, child := range children {
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if blockS, exists := schema.BlockTypes[child.BlockTypeName]; exists {
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vars = append(vars, walkVariables(child.Node, child.Body(), &blockS.Block)...)
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} else if attrS, exists := schema.Attributes[child.BlockTypeName]; exists {
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synthSchema := schemaForCtyType(attrS.Type.ElementType())
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vars = append(vars, walkVariables(child.Node, child.Body(), synthSchema)...)
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}
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}
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return vars
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}
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