f220c26836
This package is an alternative to gocty for situations where static Go types are not desired and the application instead wishes to remain in the cty dynamic type system.
38 lines
1.1 KiB
Go
38 lines
1.1 KiB
Go
package zcldec
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import (
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"github.com/zclconf/go-zcl/zcl"
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)
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// Variables processes the given body with the given spec and returns a
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// list of the variable traversals that would be required to decode
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// the same pairing of body and spec.
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//
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// This can be used to conditionally populate the variables in the EvalContext
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// passed to Decode, for applications where a static scope is insufficient.
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//
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// If the given body is not compliant with the given schema, diagnostics are
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// returned describing the problem, which could also serve as a pre-evaluation
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// partial validation step.
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func Variables(body zcl.Body, spec Spec) ([]zcl.Traversal, zcl.Diagnostics) {
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schema := ImpliedSchema(spec)
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content, _, diags := body.PartialContent(schema)
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var vars []zcl.Traversal
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if diags.HasErrors() {
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return vars, diags
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}
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if vs, ok := spec.(specNeedingVariables); ok {
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vars = append(vars, vs.variablesNeeded(content)...)
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}
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spec.visitSameBodyChildren(func(s Spec) {
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if vs, ok := s.(specNeedingVariables); ok {
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vars = append(vars, vs.variablesNeeded(content)...)
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}
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})
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return vars, diags
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}
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