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86bf674246
In order to allow lazy evaluation of resource indexes, we can't index resources immediately via GetResourceInstance. Change the evaluation to always return whole Resources via GetResource, and index individual instances during expression evaluation. This will allow us to always check for invalid index errors rather than returning an unknown value and ignoring it during apply.
35 lines
1.8 KiB
Go
35 lines
1.8 KiB
Go
package lang
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import (
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"github.com/hashicorp/terraform/addrs"
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"github.com/hashicorp/terraform/tfdiags"
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"github.com/zclconf/go-cty/cty"
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)
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// Data is an interface whose implementations can provide cty.Value
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// representations of objects identified by referenceable addresses from
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// the addrs package.
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//
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// This interface will grow each time a new type of reference is added, and so
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// implementations outside of the Terraform codebases are not advised.
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//
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// Each method returns a suitable value and optionally some diagnostics. If the
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// returned diagnostics contains errors then the type of the returned value is
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// used to construct an unknown value of the same type which is then used in
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// place of the requested object so that type checking can still proceed. In
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// cases where it's not possible to even determine a suitable result type,
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// cty.DynamicVal is returned along with errors describing the problem.
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type Data interface {
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StaticValidateReferences(refs []*addrs.Reference, self addrs.Referenceable) tfdiags.Diagnostics
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GetCountAttr(addrs.CountAttr, tfdiags.SourceRange) (cty.Value, tfdiags.Diagnostics)
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GetForEachAttr(addrs.ForEachAttr, tfdiags.SourceRange) (cty.Value, tfdiags.Diagnostics)
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GetResource(addrs.Resource, tfdiags.SourceRange) (cty.Value, tfdiags.Diagnostics)
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GetLocalValue(addrs.LocalValue, tfdiags.SourceRange) (cty.Value, tfdiags.Diagnostics)
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GetModuleInstance(addrs.ModuleCallInstance, tfdiags.SourceRange) (cty.Value, tfdiags.Diagnostics)
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GetModuleInstanceOutput(addrs.ModuleCallOutput, tfdiags.SourceRange) (cty.Value, tfdiags.Diagnostics)
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GetPathAttr(addrs.PathAttr, tfdiags.SourceRange) (cty.Value, tfdiags.Diagnostics)
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GetTerraformAttr(addrs.TerraformAttr, tfdiags.SourceRange) (cty.Value, tfdiags.Diagnostics)
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GetInputVariable(addrs.InputVariable, tfdiags.SourceRange) (cty.Value, tfdiags.Diagnostics)
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}
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