27 lines
623 B
Go
27 lines
623 B
Go
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package lang
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import (
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"github.com/hashicorp/terraform/config/lang/ast"
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)
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// FixedValueTransform transforms an AST to return a fixed value for
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// all interpolations. i.e. you can make "hello ${anything}" always
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// turn into "hello foo".
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func FixedValueTransform(root ast.Node, Value *ast.LiteralNode) ast.Node {
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// We visit the nodes in top-down order
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result := root
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switch n := result.(type) {
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case *ast.Concat:
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for i, v := range n.Exprs {
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n.Exprs[i] = FixedValueTransform(v, Value)
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}
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case *ast.LiteralNode:
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// We keep it as-is
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default:
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// Anything else we replace
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result = Value
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}
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return result
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}
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