neovim

Neovim text editor
git clone https://git.dasho.dev/neovim.git
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ffi_spec.lua (1927B)

      1 local t = require('test.testutil')
      2 local n = require('test.functional.testnvim')()
      3 
      4 local eq = t.eq
      5 local exec_lua = n.exec_lua
      6 local clear = n.clear
      7 
      8 before_each(clear)
      9 
     10 describe('ffi.cdef', function()
     11  it('can use Neovim core functions', function()
     12    if not exec_lua("return pcall(require, 'ffi')") then
     13      pending('N/A: missing LuaJIT FFI')
     14    end
     15 
     16    eq(
     17      12,
     18      exec_lua(function()
     19        local ffi = require('ffi')
     20 
     21        ffi.cdef [[
     22        typedef struct window_S win_T;
     23        int win_col_off(win_T *wp);
     24        extern win_T *curwin;
     25      ]]
     26 
     27        vim.cmd('set number numberwidth=4 signcolumn=yes:4')
     28 
     29        return ffi.C.win_col_off(ffi.C.curwin)
     30      end)
     31    )
     32 
     33    eq(
     34      20,
     35      exec_lua(function()
     36        local ffi = require('ffi')
     37 
     38        ffi.cdef [[
     39        typedef struct {} stl_hlrec_t;
     40        typedef struct {} StlClickRecord;
     41        typedef struct {} statuscol_T;
     42        typedef struct {} Error;
     43 
     44        win_T *find_window_by_handle(int Window, Error *err);
     45 
     46        int build_stl_str_hl(
     47          win_T *wp,
     48          char *out,
     49          size_t outlen,
     50          char *fmt,
     51          int opt_idx,
     52          int opt_scope,
     53          int fillchar,
     54          int maxwidth,
     55          stl_hlrec_t **hltab,
     56          StlClickRecord **tabtab,
     57          statuscol_T *scp
     58        );
     59      ]]
     60 
     61        return ffi.C.build_stl_str_hl(
     62          ffi.C.find_window_by_handle(0, ffi.new('Error')),
     63          ffi.new('char[1024]'),
     64          1024,
     65          ffi.cast('char*', 'StatusLineOfLength20'),
     66          -1,
     67          0,
     68          0,
     69          0,
     70          nil,
     71          nil,
     72          nil
     73        )
     74      end)
     75    )
     76 
     77    -- Check that extern symbols are exported and accessible
     78    eq(
     79      true,
     80      exec_lua(function()
     81        local ffi = require('ffi')
     82 
     83        ffi.cdef('uint64_t display_tick;')
     84 
     85        return ffi.C.display_tick >= 0
     86      end)
     87    )
     88  end)
     89 end)