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annotate src/create_nvcmdidxs.vim @ 36058:1f0d379c20b7

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Added tag v9.1.0701 for changeset b9f5056aacde2faa61e449e691b3a0d1a8cbddfb
author Christian Brabandt <cb@256bit.org>
date Wed, 28 Aug 2024 23:30:03 +0200
parents ee1019e59bef
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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ee1019e59bef patch 8.2.4270: generating nv_cmdidxs.h requires building Vim twice
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1 " This script generates the table nv_cmd_idx[] which contains the index in
ee1019e59bef patch 8.2.4270: generating nv_cmdidxs.h requires building Vim twice
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parents: 27447
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2 " nv_cmds[] table (normal.c) for each of the command character supported in
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3 " normal/visual mode.
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4 " This is used to speed up the command lookup in nv_cmds[].
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5 "
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6 " Script should be run using "make nvcmdidxs", every time the nv_cmds[] table
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7 " in src/nv_cmds.h changes.
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8 "
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9 " This is written in legacy Vim script so that it can be run by a slightly
ee1019e59bef patch 8.2.4270: generating nv_cmdidxs.h requires building Vim twice
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parents: 27447
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10 " older Vim version.
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11
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12 " Generate the table of normal/visual mode command characters and their
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13 " corresponding index.
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14 let cmd = 'create_nvcmdidxs'
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15 if has('unix')
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16 let cmd = './' .. cmd
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17 endif
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18 let nv_cmdtbl = systemlist(cmd)->map({i, ch -> {'idx': i, 'cmdchar': ch}})
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19
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20 " sort the table by the command character
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21 call sort(nv_cmdtbl, {a, b -> a.cmdchar - b.cmdchar})
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22
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23 " Compute the highest index upto which the command character can be directly
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24 " used as an index.
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25 let nv_max_linear = 0
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26 for i in range(nv_cmdtbl->len())
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27 if i != nv_cmdtbl[i].cmdchar
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28 let nv_max_linear = i - 1
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29 break
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30 endif
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31 endfor
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32
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33 " Generate a header file with the table
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34 let output =<< trim END
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35 /*
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36 * Automatically generated code by the create_nvcmdidxs.vim script.
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37 *
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38 * Table giving the index in nv_cmds[] to lookup based on
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39 * the command character.
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40 */
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41
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42 // nv_cmd_idx[<normal mode command character>] => nv_cmds[] index
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43 static const unsigned short nv_cmd_idx[] =
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44 {
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45 END
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46
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47 " Add each command character in comment and the corresponding index
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48 let output += nv_cmdtbl->map({_, v ->
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49 \ printf(' /* %5d */ %3d,', v.cmdchar, v.idx)})
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50
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51 let output += ['};', '',
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52 \ '// The highest index for which',
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53 \ '// nv_cmds[idx].cmd_char == nv_cmd_idx[nv_cmds[idx].cmd_char]']
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54
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55 let output += ['static const int nv_max_linear = ' .. nv_max_linear .. ';']
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56
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57 call writefile(output, "nv_cmdidxs.h")
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58 quit
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59
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60 " vim: shiftwidth=2 sts=2 expandtab