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557
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1 " Language: OCaml
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2 " Maintainer: David Baelde <firstname.name@ens-lyon.org>
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3 " Mike Leary <leary@nwlink.com>
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4 " Markus Mottl <markus.mottl@gmail.com>
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5 " Stefano Zacchiroli <zack@bononia.it>
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6 " URL: http://www.ocaml.info/vim/ftplugin/ocaml.vim
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659
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7 " Last Change: 2006 Feb 05
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557
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8 "
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9 " if exists("b:did_ftplugin")
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10 " finish
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11 " endif
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12 let b:did_ftplugin=1
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7
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13
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557
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14 " Error handling -- helps moving where the compiler wants you to go
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15 let s:cposet=&cpoptions
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7
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16 set cpo-=C
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17 setlocal efm=
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557
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18 \%EFile\ \"%f\"\\,\ line\ %l\\,\ characters\ %c-%*\\d:,
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19 \%EFile\ \"%f\"\\,\ line\ %l\\,\ character\ %c:%m,
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20 \%+EReference\ to\ unbound\ regexp\ name\ %m,
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21 \%Eocamlyacc:\ e\ -\ line\ %l\ of\ \"%f\"\\,\ %m,
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22 \%Wocamlyacc:\ w\ -\ %m,
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23 \%-Zmake%.%#,
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24 \%C%m,
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25 \%D%*\\a[%*\\d]:\ Entering\ directory\ `%f',
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26 \%X%*\\a[%*\\d]:\ Leaving\ directory\ `%f',
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27 \%D%*\\a:\ Entering\ directory\ `%f',
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28 \%X%*\\a:\ Leaving\ directory\ `%f',
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29 \%DMaking\ %*\\a\ in\ %f
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7
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30
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31 " Add mappings, unless the user didn't want this.
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32 if !exists("no_plugin_maps") && !exists("no_ocaml_maps")
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557
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33 " (un)commenting
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7
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34 if !hasmapto('<Plug>Comment')
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35 nmap <buffer> <LocalLeader>c <Plug>LUncomOn
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36 vmap <buffer> <LocalLeader>c <Plug>BUncomOn
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37 nmap <buffer> <LocalLeader>C <Plug>LUncomOff
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38 vmap <buffer> <LocalLeader>C <Plug>BUncomOff
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39 endif
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40
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41 nnoremap <buffer> <Plug>LUncomOn mz0i(* <ESC>$A *)<ESC>`z
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557
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42 nnoremap <buffer> <Plug>LUncomOff :s/^(\* \(.*\) \*)/\1/<CR>:noh<CR>
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7
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43 vnoremap <buffer> <Plug>BUncomOn <ESC>:'<,'><CR>`<O<ESC>0i(*<ESC>`>o<ESC>0i*)<ESC>`<
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44 vnoremap <buffer> <Plug>BUncomOff <ESC>:'<,'><CR>`<dd`>dd`<
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45
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46 if !hasmapto('<Plug>Abbrev')
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557
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47 iabbrev <buffer> ASS (assert false (* XXX *))
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7
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48 endif
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49 endif
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20
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50
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51 " Let % jump between structure elements (due to Issac Trotts)
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557
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52 let b:mw = ''
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53 let b:mw = b:mw . ',\<let\>:\<and\>:\(\<in\>\|;;\)'
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54 let b:mw = b:mw . ',\<if\>:\<then\>:\<else\>'
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55 let b:mw = b:mw . ',\<\(for\|while\)\>:\<do\>:\<done\>,'
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56 let b:mw = b:mw . ',\<\(object\|sig\|struct\|begin\)\>:\<end\>'
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57 let b:mw = b:mw . ',\<\(match\|try\)\>:\<with\>'
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58 let b:match_words = b:mw
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59
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60 let b:match_ignorecase=0
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20
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61
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62 " switching between interfaces (.mli) and implementations (.ml)
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63 if !exists("g:did_ocaml_switch")
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64 let g:did_ocaml_switch = 1
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557
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65 map <LocalLeader>s :call OCaml_switch(0)<CR>
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66 map <LocalLeader>S :call OCaml_switch(1)<CR>
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20
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67 fun OCaml_switch(newwin)
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68 if (match(bufname(""), "\\.mli$") >= 0)
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69 let fname = substitute(bufname(""), "\\.mli$", ".ml", "")
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70 if (a:newwin == 1)
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557
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71 exec "new " . fname
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20
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72 else
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557
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73 exec "arge " . fname
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20
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74 endif
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75 elseif (match(bufname(""), "\\.ml$") >= 0)
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76 let fname = bufname("") . "i"
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77 if (a:newwin == 1)
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557
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78 exec "new " . fname
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20
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79 else
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557
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80 exec "arge " . fname
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20
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81 endif
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82 endif
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83 endfun
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84 endif
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85
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557
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86 " Folding support
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87
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88 " Get the modeline because folding depends on indentation
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89 let s:s = line2byte(line('.'))+col('.')-1
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90 if search('^\s*(\*:o\?caml:')
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91 let s:modeline = getline(".")
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92 else
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93 let s:modeline = ""
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94 endif
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95 if s:s > 0
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96 exe 'goto' s:s
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97 endif
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98
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99 " Get the indentation params
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100 let s:m = matchstr(s:modeline,'default\s*=\s*\d\+')
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101 if s:m != ""
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102 let s:idef = matchstr(s:m,'\d\+')
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103 elseif exists("g:omlet_indent")
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104 let s:idef = g:omlet_indent
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105 else
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106 let s:idef = 2
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107 endif
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108 let s:m = matchstr(s:modeline,'struct\s*=\s*\d\+')
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109 if s:m != ""
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110 let s:i = matchstr(s:m,'\d\+')
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111 elseif exists("g:omlet_indent_struct")
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112 let s:i = g:omlet_indent_struct
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113 else
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114 let s:i = s:idef
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115 endif
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116
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117 " Set the folding method
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118 if exists("g:ocaml_folding")
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119 setlocal foldmethod=expr
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120 setlocal foldexpr=OMLetFoldLevel(v:lnum)
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121 endif
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122
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123 " - Only definitions below, executed once -------------------------------------
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124
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125 if exists("*OMLetFoldLevel")
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126 finish
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127 endif
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128
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129 function s:topindent(lnum)
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130 let l = a:lnum
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131 while l > 0
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132 if getline(l) =~ '\s*\%(\<struct\>\|\<sig\>\|\<object\>\)'
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133 return indent(l)
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134 endif
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135 let l = l-1
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136 endwhile
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137 return -s:i
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138 endfunction
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139
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140 function OMLetFoldLevel(l)
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141
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142 " This is for not merging blank lines around folds to them
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143 if getline(a:l) !~ '\S'
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144 return -1
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145 endif
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146
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147 " We start folds for modules, classes, and every toplevel definition
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148 if getline(a:l) =~ '^\s*\%(\<val\>\|\<module\>\|\<class\>\|\<type\>\|\<method\>\|\<initializer\>\|\<inherit\>\|\<exception\>\|\<external\>\)'
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149 exe 'return ">' (indent(a:l)/s:i)+1 '"'
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150 endif
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151
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152 " Toplevel let are detected thanks to the indentation
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153 if getline(a:l) =~ '^\s*let\>' && indent(a:l) == s:i+s:topindent(a:l)
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154 exe 'return ">' (indent(a:l)/s:i)+1 '"'
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155 endif
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156
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157 " We close fold on end which are associated to struct, sig or object.
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158 " We use syntax information to do that.
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159 if getline(a:l) =~ '^\s*end\>' && synIDattr(synID(a:l, indent(a:l)+1, 0), "name") != "ocamlKeyword"
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160 return (indent(a:l)/s:i)+1
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161 endif
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162
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163 " Folds end on ;;
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164 if getline(a:l) =~ '^\s*;;'
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165 exe 'return "<' (indent(a:l)/s:i)+1 '"'
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166 endif
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167
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168 " Comments around folds aren't merged to them.
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169 if synIDattr(synID(a:l, indent(a:l)+1, 0), "name") == "ocamlComment"
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170 return -1
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171 endif
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172
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173 return '='
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174 endfunction
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175
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176 " Vim support for OCaml .annot files (requires Vim with python support)
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20
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177 "
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178 " Executing OCamlPrintType(<mode>) function will display in the Vim bottom
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179 " line(s) the type of an ocaml value getting it from the corresponding .annot
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180 " file (if any). If Vim is in visual mode, <mode> should be "visual" and the
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181 " selected ocaml value correspond to the highlighted text, otherwise (<mode>
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182 " can be anything else) it corresponds to the literal found at the current
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183 " cursor position.
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184 "
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185 " .annot files are parsed lazily the first time OCamlPrintType is invoked; is
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186 " also possible to force the parsing using the OCamlParseAnnot() function.
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187 "
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557
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188 " Typing ',3' will cause OCamlPrintType function to be invoked with
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20
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189 " the right argument depending on the current mode (visual or not).
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190 "
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557
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191 " Copyright (C) <2003-2004> Stefano Zacchiroli <zack@bononia.it>
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20
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192 "
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193 " Created: Wed, 01 Oct 2003 18:16:22 +0200 zack
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557
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194 " LastModified: Wed, 25 Aug 2004 18:28:39 +0200 zack
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20
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195
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196 if !has("python")
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197 finish
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198 endif
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199
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200 python << EOF
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201
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202 import re
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203 import os
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204 import string
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205 import time
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206 import vim
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207
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208 debug = False
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209
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210 class AnnExc(Exception):
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211 def __init__(self, reason):
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212 self.reason = reason
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213
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214 no_annotations = AnnExc("No type annotations (.annot) file found")
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215 annotation_not_found = AnnExc("No type annotation found for the given text")
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216 def malformed_annotations(lineno):
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217 return AnnExc("Malformed .annot file (line = %d)" % lineno)
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218
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219 class Annotations:
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220 """
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221 .annot ocaml file representation
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222
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223 File format (copied verbatim from caml-types.el)
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224
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225 file ::= block *
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226 block ::= position <SP> position <LF> annotation *
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227 position ::= filename <SP> num <SP> num <SP> num
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228 annotation ::= keyword open-paren <LF> <SP> <SP> data <LF> close-paren
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229
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230 <SP> is a space character (ASCII 0x20)
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231 <LF> is a line-feed character (ASCII 0x0A)
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232 num is a sequence of decimal digits
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233 filename is a string with the lexical conventions of O'Caml
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234 open-paren is an open parenthesis (ASCII 0x28)
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235 close-paren is a closed parenthesis (ASCII 0x29)
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236 data is any sequence of characters where <LF> is always followed by
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237 at least two space characters.
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238
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239 - in each block, the two positions are respectively the start and the
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557
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240 end of the range described by the block.
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20
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241 - in a position, the filename is the name of the file, the first num
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242 is the line number, the second num is the offset of the beginning
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243 of the line, the third num is the offset of the position itself.
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244 - the char number within the line is the difference between the third
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245 and second nums.
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246
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247 For the moment, the only possible keyword is \"type\"."
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248 """
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249
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250 def __init__(self):
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251 self.__filename = None # last .annot parsed file
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252 self.__ml_filename = None # as above but s/.annot/.ml/
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253 self.__timestamp = None # last parse action timestamp
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254 self.__annot = {}
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255 self.__re = re.compile(
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557
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256 '^"[^"]*"\s+(\d+)\s+(\d+)\s+(\d+)\s+"[^"]*"\s+(\d+)\s+(\d+)\s+(\d+)$')
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20
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257
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258 def __parse(self, fname):
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259 try:
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260 f = open(fname)
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261 line = f.readline() # position line
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262 lineno = 1
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263 while (line != ""):
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264 m = self.__re.search(line)
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265 if (not m):
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266 raise malformed_annotations(lineno)
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267 line1 = int(m.group(1))
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268 col1 = int(m.group(3)) - int(m.group(2))
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269 line2 = int(m.group(4))
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270 col2 = int(m.group(6)) - int(m.group(5))
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271 line = f.readline() # "type(" string
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272 lineno += 1
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273 if (line == ""): raise malformed_annotations(lineno)
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274 type = []
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275 line = f.readline() # type description
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276 lineno += 1
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277 if (line == ""): raise malformed_annotations(lineno)
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278 while line != ")\n":
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279 type.append(string.strip(line))
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280 line = f.readline()
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281 lineno += 1
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282 if (line == ""): raise malformed_annotations(lineno)
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283 type = string.join(type, "\n")
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557
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284 key = ((line1, col1), (line2, col2))
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285 if not self.__annot.has_key(key):
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286 self.__annot[key] = type
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20
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287 line = f.readline() # position line
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288 f.close()
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289 self.__filename = fname
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290 self.__ml_filename = re.sub("\.annot$", ".ml", fname)
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291 self.__timestamp = int(time.time())
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292 except IOError:
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293 raise no_annotations
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294
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295 def parse(self):
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296 annot_file = re.sub("\.ml$", ".annot", vim.current.buffer.name)
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297 self.__parse(annot_file)
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298
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299 def get_type(self, (line1, col1), (line2, col2)):
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300 if debug:
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301 print line1, col1, line2, col2
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302 if vim.current.buffer.name == None:
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303 raise no_annotations
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304 if vim.current.buffer.name != self.__ml_filename or \
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305 os.stat(self.__filename).st_mtime > self.__timestamp:
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306 self.parse()
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307 try:
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308 return self.__annot[(line1, col1), (line2, col2)]
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309 except KeyError:
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310 raise annotation_not_found
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311
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312 word_char_RE = re.compile("^[\w.]$")
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313
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314 # TODO this function should recognize ocaml literals, actually it's just an
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315 # hack that recognize continuous sequences of word_char_RE above
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316 def findBoundaries(line, col):
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317 """ given a cursor position (as returned by vim.current.window.cursor)
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318 return two integers identify the beggining and end column of the word at
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319 cursor position, if any. If no word is at the cursor position return the
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320 column cursor position twice """
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321 left, right = col, col
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322 line = line - 1 # mismatch vim/python line indexes
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323 (begin_col, end_col) = (0, len(vim.current.buffer[line]) - 1)
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324 try:
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325 while word_char_RE.search(vim.current.buffer[line][left - 1]):
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326 left = left - 1
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327 except IndexError:
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328 pass
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329 try:
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330 while word_char_RE.search(vim.current.buffer[line][right + 1]):
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331 right = right + 1
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332 except IndexError:
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333 pass
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334 return (left, right)
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335
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336 annot = Annotations() # global annotation object
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337
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338 def printOCamlType(mode):
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339 try:
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340 if mode == "visual": # visual mode: lookup highlighted text
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341 (line1, col1) = vim.current.buffer.mark("<")
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342 (line2, col2) = vim.current.buffer.mark(">")
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343 else: # any other mode: lookup word at cursor position
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344 (line, col) = vim.current.window.cursor
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345 (col1, col2) = findBoundaries(line, col)
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346 (line1, line2) = (line, line)
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347 begin_mark = (line1, col1)
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348 end_mark = (line2, col2 + 1)
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349 print annot.get_type(begin_mark, end_mark)
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350 except AnnExc, exc:
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351 print exc.reason
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352
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353 def parseOCamlAnnot():
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354 try:
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355 annot.parse()
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356 except AnnExc, exc:
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357 print exc.reason
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358
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359 EOF
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360
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557
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361 fun! OCamlPrintType(current_mode)
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20
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362 if (a:current_mode == "visual")
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363 python printOCamlType("visual")
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364 else
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365 python printOCamlType("normal")
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366 endif
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367 endfun
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368
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557
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369 fun! OCamlParseAnnot()
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20
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370 python parseOCamlAnnot()
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371 endfun
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372
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557
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373 map <LocalLeader>t :call OCamlPrintType("normal")<RETURN>
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374 vmap <LocalLeader>t :call OCamlPrintType("visual")<RETURN>
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375
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376 let &cpoptions=s:cposet
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377 unlet s:cposet
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378
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379 " vim:sw=2
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