f9f92da699
Our API previously had a function only for retrieving the variables used in the for_each and labels arguments used during an Expand call, and expected callers to then interrogate the resulting expanded block to find the other variables required to fully decode the content. That approach is insufficient for any application that needs to know the full set of required variables before any evaluation begins, such as when a dependency graph will be constructed to allow a topological traversal through blocks while evaluating. Now we have WalkVariables, which finds both the variables used to expand _and_ the variables within any blocks. This also renames WalkForEachVariables to WalkExpandVariables since that name is more accurate with the addition of the "label" argument into the expand-time dependency set. There is also a hcldec-based helper wrapper for each of those, allowing single-shot analysis of blocks for applications that use hcldec. This is a breaking change to the dynblock package API, because the old WalkForEachVariables and ForEachVariablesHCLDec functions are no longer present. |
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| transform | ||
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| README.md | ||
HCL Extensions
This directory contains some packages implementing some extensions to HCL
that add features by building on the core API in the main hcl package.
These serve as optional language extensions for use-cases that are limited only to specific callers. Generally these make the language more expressive at the expense of increased dynamic behavior that may be undesirable for applications that need to impose more rigid structure on configuration.