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23 lines
894 B
Go
23 lines
894 B
Go
// Copyright (c) The OpenTofu Authors
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// SPDX-License-Identifier: MPL-2.0
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// Copyright (c) 2023 HashiCorp, Inc.
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// SPDX-License-Identifier: MPL-2.0
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package tofu
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// GraphNodeDynamicExpandable is an interface that nodes can implement
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// to signal that they can be expanded at eval-time (hence dynamic).
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// These nodes are given the eval context and are expected to return
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// a new subgraph.
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type GraphNodeDynamicExpandable interface {
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// DynamicExpand returns a new graph which will be treated as the dynamic
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// subgraph of the receiving node.
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//
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// The second return value is of type error for historical reasons;
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// it's valid (and most ideal) for DynamicExpand to return the result
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// of calling ErrWithWarnings on a tfdiags.Diagnostics value instead,
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// in which case the caller will unwrap it and gather the individual
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// diagnostics.
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DynamicExpand(EvalContext) (*Graph, error)
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}
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