hcl/ext/userfunc
Martin Atkins 26f1e48014 ext/userfunc: extension for user-defined functions
This package provides helper function that looks in a given body for
blocks that define functions, returning a function map suitable for use
in a zcl.EvalContext.
2017-07-25 18:34:56 -07:00
..
decode_test.go ext/userfunc: extension for user-defined functions 2017-07-25 18:34:56 -07:00
decode.go ext/userfunc: extension for user-defined functions 2017-07-25 18:34:56 -07:00
doc.go ext/userfunc: extension for user-defined functions 2017-07-25 18:34:56 -07:00
public.go ext/userfunc: extension for user-defined functions 2017-07-25 18:34:56 -07:00
README.md ext/userfunc: extension for user-defined functions 2017-07-25 18:34:56 -07:00

zcl User Functions Extension

This zcl extension allows a calling application to support user-defined functions.

Functions are defined via a specific block type, like this:

function "add" {
  params = ["a", "b"]
  result = a + b
}

The extension is implemented as a pre-processor for cty.Body objects. Given a body that may contain functions, the DecodeUserFunctions function searches for blocks that define functions and returns a functions map suitable for inclusion in a zcl.EvalContext. It also returns a new cty.Body that contains the remainder of the content from the given body, allowing for further processing of remaining content.

For more information, see the godoc reference.