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Fixes #1139
This PR adds support for
count.index
,each.key
, andeach.value
references. Previously, expressions with these references were always evaluated as unknown:Because of this support, blocks returned by
GetModuleContent
will now be expanded. For example, if a resource withcount = 2
is defined, 2 blocks will be returned, whereas previously a single block was returned.Note that an error is now returned if
count
orfor_each
is null to follow Terraform semantics.As an internal implementation, expressions containing
count
/for_each
are evaluated when the block is expanded. The evaluated expression is returned to the plugin as a new expression wrapped around the value and resolved whenEvaluateExpr
is called. See also terraform-linters/tflint-plugin-sdk#205.In order to use this feature, a plugin built with SDK v0.14+ is required. In earlier versions, blocks are expanded, but
each.*
andcount.*
are not evaluated.ToDo
ExpandMode
option instead ofIncludeNotCreated