Mercurial > vim

comparison src/create_cmdidxs.vim @ 11374:889da8649221 v8.0.0572

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
patch 8.0.0572: building the command table requires Perl commit https://github.com/vim/vim/commit/6de5e126018b6f92526795cc06b1d73fac965db1 Author: Bram Moolenaar <Bram@vim.org> Date: Thu Apr 20 21:55:44 2017 +0200 patch 8.0.0572: building the command table requires Perl Problem: Building the command table requires Perl. Solution: Use a Vim script solution. (Dominique Pelle, closes https://github.com/vim/vim/issues/1641)
author Christian Brabandt <cb@256bit.org>
date Thu, 20 Apr 2017 22:00:04 +0200
parents
children 854fb0ad4be6
comparison
equal deleted inserted replaced
11373:600a8ca3cc40 11374:889da8649221
1 " This script generates the tables cmdidxs1[] and cmdidxs2[][] which,
2 " given a Ex command, determine the first value to probe to find
3 " a matching command in cmdnames[] based on the first character
4 " and the first 2 characters of the command.
5 " This is used to speed up lookup in cmdnames[].
6 "
7 " Script should be run every time new Ex commands are added in Vim,
8 " from the src/vim directory, since it reads commands from "ex_cmds.h".
9
10 let cmds = []
11 let skipped_cmds = 0
12
13 for line in readfile('ex_cmds.h')
14 if line =~ '^EX(CMD_'
15 let m = matchlist(line, '^EX(CMD_\S*,\s*"\([a-z][^"]*\)"')
16 if len(m) >= 2
17 let cmds += [ m[1] ]
18 else
19 let skipped_cmds += 1
20 endif
21 endif
22 endfor
23
24 let cmdidxs1 = {}
25 let cmdidxs2 = {}
26
27 for i in range(len(cmds) - 1, 0, -1)
28 let cmd = cmds[i]
29 let c1 = cmd[0] " First character of command
30 let c2 = cmd[1] " Second character of command (if any)
31
32 let cmdidxs1{c1} = i
33 if c2 >= 'a' && c2 <= 'z'
34 let cmdidxs2{c1}{c2} = i
35 endif
36 endfor
37
38 let output = [ '/* Automatically generated code by create_cmdidxs.vim' ]
39 let output += [ ' *' ]
40 let output += [ ' * Table giving the index of the first command in cmdnames[] to lookup' ]
41 let output += [ ' * based on the first letter of a command.' ]
42 let output += [ ' */' ]
43 let output += [ 'static const unsigned short cmdidxs1[26] =' ]
44 let output += [ '{' ]
45
46 let a_to_z = map(range(char2nr('a'), char2nr('z')), 'nr2char(v:val)')
47 for c1 in a_to_z
48 let line = ' /* ' . c1 . ' */ ' . cmdidxs1{c1} . ((c1 == 'z') ? '' : ',')
49 let output += [ line ]
50 endfor
51 let output += [ '};' ]
52 let output += [ '' ]
53 let output += [ '/*' ]
54 let output += [ ' * Table giving the index of the first command in cmdnames[] to lookup' ]
55 let output += [ ' * based on the first 2 letters of a command.' ]
56 let output += [ ' * Values in cmdidxs2[c1][c2] are relative to cmdidxs1[c1] so that they' ]
57 let output += [ ' * fit in a byte.' ]
58 let output += [ ' */' ]
59 let output += [ 'static const unsigned char cmdidxs2[26][26] =' ]
60 let output += [ '{ /* a b c d e f g h i j k l m n o p q r s t u v w x y z */' ]
61
62 for c1 in a_to_z
63 let line = ' /* ' . c1 . ' */ {'
64 for c2 in a_to_z
65 if exists('cmdidxs2{c1}{c2}')
66 let line .= printf('%3d', cmdidxs2{c1}{c2} - cmdidxs1{c1})
67 else
68 let line .= ' 0'
69 endif
70 let line .= (c2 == 'z') ? '' : ','
71 endfor
72 let line .= ' }' . ((c1 == 'z') ? '' : ',')
73 let output += [ line ]
74 endfor
75
76 let output += [ '};' ]
77 let output += [ '' ]
78 let output += [ 'static const int command_count = ' . (len(cmds) + skipped_cmds) . ';' ]
79
80 call writefile(output, "ex_cmdidxs.h")
81 quit