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janet/test/suite-ffi.janet
Calvin Rose 866d83579e Address #1165 - Allow for partial ffi support without totally removing testing.
Query at runtime which calling conventions are supported, including
a placeholder :none.
2023-06-08 09:07:16 -05:00

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# Copyright (c) 2023 Calvin Rose & contributors
#
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# of this software and associated documentation files (the "Software"), to
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# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
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# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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# IN THE SOFTWARE.
(import ./helper :prefix "" :exit true)
(start-suite)
# We should get ARM support...
(def has-ffi (dyn 'ffi/native))
(def has-full-ffi
(and has-ffi
(when-let [entry (dyn 'ffi/calling-conventions)]
(def fficc (entry :value))
(> (length (fficc)) 1)))) # all arches support :none
# FFI check
# d80356158
(compwhen has-ffi
(ffi/context))
(compwhen has-ffi
(ffi/defbind memcpy :ptr [dest :ptr src :ptr n :size]))
(compwhen has-full-ffi
(def buffer1 @"aaaa")
(def buffer2 @"bbbb")
(memcpy buffer1 buffer2 4)
(assert (= (string buffer1) "bbbb") "ffi 1 - memcpy"))
# cfaae47ce
(compwhen has-ffi
(assert (= 8 (ffi/size [:int :char])) "size unpacked struct 1")
(assert (= 5 (ffi/size [:pack :int :char])) "size packed struct 1")
(assert (= 5 (ffi/size [:int :pack-all :char])) "size packed struct 2")
(assert (= 4 (ffi/align [:int :char])) "align 1")
(assert (= 1 (ffi/align [:pack :int :char])) "align 2")
(assert (= 1 (ffi/align [:int :char :pack-all])) "align 3")
(assert (= 26 (ffi/size [:char :pack :int @[:char 21]]))
"array struct size"))
(end-suite)