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There are a few places where we want to perform some transformation on a cty.Value, but require information from the schema. Rather than create bespoke functions to walk the cty.Value and schema in concert, we can provide Attribute information from a cty.Path allowing the use of Value.Transform in these cases.
30 lines
701 B
Go
30 lines
701 B
Go
package configschema
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import (
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"github.com/zclconf/go-cty/cty"
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)
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// AttributeByPath looks up the Attribute schema which corresponds to the given
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// cty.Path. A nil value is returned if the given path does not correspond to a
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// specific attribute.
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// TODO: this will need to be updated for nested attributes
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func (b *Block) AttributeByPath(path cty.Path) *Attribute {
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block := b
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for _, step := range path {
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switch step := step.(type) {
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case cty.GetAttrStep:
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if attr := block.Attributes[step.Name]; attr != nil {
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return attr
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}
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if nestedBlock := block.BlockTypes[step.Name]; nestedBlock != nil {
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block = &nestedBlock.Block
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continue
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}
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return nil
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}
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}
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return nil
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}
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