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111 lines
3.0 KiB
Plaintext
111 lines
3.0 KiB
Plaintext
ffi = require 'ffi'
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lpeg = require 'lpeg'
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formatc = require 'test.unit.formatc'
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Set = require 'test.unit.set'
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Preprocess = require 'test.unit.preprocess'
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Paths = require 'test.config.paths'
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-- add some standard header locations
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for i,p in ipairs(Paths.include_paths)
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Preprocess.add_to_include_path(p)
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-- load neovim shared library
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libnvim = ffi.load Paths.test_libnvim_path
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trim = (s) ->
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s\match'^%s*(.*%S)' or ''
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-- a Set that keeps around the lines we've already seen
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export cdefs
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if cdefs == nil
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cdefs = Set!
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export imported
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if imported == nil
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imported = Set!
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-- some things are just too complex for the LuaJIT C parser to digest. We
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-- usually don't need them anyway.
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filter_complex_blocks = (body) ->
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result = {}
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for line in body\gmatch("[^\r\n]+")
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-- remove all lines that contain Objective-C block syntax, the LuaJIT ffi
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-- doesn't understand it.
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if string.find(line, "(^)", 1, true) ~= nil
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continue
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if string.find(line, "_ISwupper", 1, true) ~= nil
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continue
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result[#result + 1] = line
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table.concat(result, "\n")
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-- use this helper to import C files, you can pass multiple paths at once,
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-- this helper will return the C namespace of the nvim library.
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-- cimport = (path) ->
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cimport = (...) ->
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-- filter out paths we've already imported
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paths = [path for path in *{...} when not imported\contains(path)]
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for path in *paths
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imported\add(path)
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if #paths == 0
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return libnvim
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-- preprocess the header
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stream = Preprocess.preprocess_stream(unpack(paths))
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body = stream\read("*a")
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stream\close!
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-- format it (so that the lines are "unique" statements), also filter out
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-- Objective-C blocks
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body = formatc(body)
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body = filter_complex_blocks(body)
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-- add the formatted lines to a set
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new_cdefs = Set!
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for line in body\gmatch("[^\r\n]+")
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new_cdefs\add(trim(line))
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-- subtract the lines we've already imported from the new lines, then add
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-- the new unique lines to the old lines (so they won't be imported again)
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new_cdefs\diff(cdefs)
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cdefs\union(new_cdefs)
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if new_cdefs\size! == 0
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-- if there's no new lines, just return
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return libnvim
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-- request a sorted version of the new lines (same relative order as the
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-- original preprocessed file) and feed that to the LuaJIT ffi
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new_lines = new_cdefs\to_table!
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ffi.cdef(table.concat(new_lines, "\n"))
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return libnvim
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cppimport = (path) ->
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return cimport Paths.test_include_path .. '/' .. path
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cimport './src/nvim/types.h'
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-- take a pointer to a C-allocated string and return an interned
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-- version while also freeing the memory
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internalize = (cdata) ->
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ffi.gc cdata, ffi.C.free
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return ffi.string cdata
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cstr = ffi.typeof 'char[?]'
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to_cstr = (string) ->
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cstr (string.len string) + 1, string
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return {
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cimport: cimport
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cppimport: cppimport
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internalize: internalize
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eq: (expected, actual) -> assert.are.same expected, actual
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neq: (expected, actual) -> assert.are_not.same expected, actual
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ffi: ffi
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lib: libnvim
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cstr: cstr
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to_cstr: to_cstr
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}
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