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35 lines
1.5 KiB
Text
35 lines
1.5 KiB
Text
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(defmodule calrissian-util
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(export (module-info 1)
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(module-info 2)
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(implements? 2)
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(exports? 2)))
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(defun module-info
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(((tuple module _args))
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;; Report exported function arities as (arity - 1) to account for
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;; the extra argument supplied to tuple modules
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(let ((fix-info (lambda (info-plist)
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(let* ((exports (: proplists get_value 'exports info-plist))
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(fix-arity (match-lambda
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;; module_info is added by the compiler and therefore remains as-is
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(((tuple 'module_info arity)) (tuple 'module_info arity))
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(((tuple fun arity)) (tuple fun (- arity 1)))))
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(info-dict (: dict from_list info-plist))
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(new-dict (: dict store 'exports (: lists map fix-arity exports) info-dict))
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(new-plist (: dict to_list new-dict)))
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new-plist))))
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(funcall fix-info (module-info module))))
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((module) (call module 'module_info)))
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(defun module-info (module key)
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(: proplists get_value key (module-info module)))
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(defun implements? (behaviour module)
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(let* ((exports (module-info module 'exports))
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(exported? (lambda (definition) (: lists member definition exports))))
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(: lists all exported?
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(call behaviour 'behaviour_info 'callbacks))))
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(defun exports? (definition module)
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(: lists member definition
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(module-info module 'exports)))
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