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Add a locals blocks to the terraformlike tests, with normal and scoped
function calls.
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* [COMPLIANCE] Add Copyright and License Headers
* add copywrite file and revert headers in testdata
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Co-authored-by: hashicorp-copywrite[bot] <110428419+hashicorp-copywrite[bot]@users.noreply.github.com>
Co-authored-by: Liam Cervante <liam.cervante@hashicorp.com>
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Most of the time, the standard expression decoding built in to HCL is
sufficient. Sometimes though, it's useful to be able to customize the
decoding of certain arguments where the application intends to use them
in a very specific way, such as in static analysis.
This extension is an approximate analog of gohcl's support for decoding
into an hcl.Expression, allowing hcldec-based applications and
applications with custom functions to similarly capture and manipulate
the physical expressions used in arguments, rather than their values.
This includes one example use-case: the typeexpr extension now includes
a cty.Function called ConvertFunc that takes a type expression as its
second argument. A type expression is not evaluatable in the usual sense,
but thanks to cty capsule types we _can_ produce a cty.Value from one
and then make use of it inside the function implementation, without
exposing this custom type to the broader language:
convert(["foo"], set(string))
This mechanism is intentionally restricted only to "argument-like"
locations where there is a specific type we are attempting to decode into.
For now, that's hcldec AttrSpec/BlockAttrsSpec -- analogous to gohcl
decoding into hcl.Expression -- and in arguments to functions.
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When we did the automatic rewriting from the hashicorp/hcl2 import paths
to hashicorp/hcl/v2 import paths, our automatic rewrite script did not
run "go fmt" afterwards and so left some imports misordered as a result
of the slightly-differently-shaped directory structure in the new
repository.
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The main HCL package is more visible this way, and so it's easier than
having to pick it out from dozens of other package directories.
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