26f1e48014
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.
23 lines
848 B
Go
23 lines
848 B
Go
// Package userfunc implements a zcl extension that allows user-defined
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// functions in zcl configuration.
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//
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// Using this extension requires some integration effort on the part of the
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// calling application, to pass any declared functions into a zcl evaluation
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// context after processing.
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//
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// The function declaration syntax looks like this:
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//
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// function "foo" {
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// params = ["name"]
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// result = "Hello, ${name}!"
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// }
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//
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// When a user-defined function is called, the expression given for the "result"
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// attribute is evaluated in an isolated evaluation context that defines variables
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// named after the given parameter names.
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//
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// The block name "function" may be overridden by the calling application, if
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// that default name conflicts with an existing block or attribute name in
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// the application.
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package userfunc
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