Mercurial > vim
annotate runtime/indent/fortran.vim @ 32215:4b6c544c41f6
Added tag v9.0.1438 for changeset a4dafbd8b7d5d49a172a71e5553fa20837456a09
| author | Bram Moolenaar <Bram@vim.org> |
|---|---|
| date | Sun, 02 Apr 2023 21:30:07 +0200 |
| parents | 57c9377b9c62 |
| children | cf2ae76cbbf7 |
| rev | line source |
|---|---|
| 7 | 1 " Vim indent file |
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2 " Language: Fortran 2008 (and older: Fortran 2003, 95, 90, and 77) |
| 28933 | 3 " Version: (v49) 2022 May 14 |
| 4 " Maintainer: Ajit J. Thakkar <thakkar.ajit@gmail.com>; <http://www2.unb.ca/~ajit/> | |
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5 " Usage: For instructions, do :help fortran-indent from Vim |
| 6530 | 6 " Credits: |
| 22565 | 7 " Version 0.1 was created in September 2000 by Ajit Thakkar. |
| 8 " Since then, useful suggestions and contributions have been made, in order, by: | |
| 9 " Albert Oliver Serra, Takuya Fujiwara, Philipp Edelmann, Eisuke Kawashima, | |
| 28933 | 10 " Louis Cochen, and Doug Kearns. |
| 7 | 11 |
| 12 " Only load this indent file when no other was loaded. | |
| 13 if exists("b:did_indent") | |
| 14 finish | |
| 15 endif | |
| 16 let b:did_indent = 1 | |
| 17 | |
| 3237 | 18 let s:cposet=&cpoptions |
| 19 set cpoptions&vim | |
| 28933 | 20 let b:undo_indent = "setl inde< indk<" |
| 3237 | 21 |
| 7 | 22 setlocal indentkeys+==~end,=~case,=~if,=~else,=~do,=~where,=~elsewhere,=~select |
| 2908 | 23 setlocal indentkeys+==~endif,=~enddo,=~endwhere,=~endselect,=~elseif |
| 24 setlocal indentkeys+==~type,=~interface,=~forall,=~associate,=~block,=~enum | |
| 25 setlocal indentkeys+==~endforall,=~endassociate,=~endblock,=~endenum | |
| 26 if exists("b:fortran_indent_more") || exists("g:fortran_indent_more") | |
| 27 setlocal indentkeys+==~function,=~subroutine,=~module,=~contains,=~program | |
| 28 setlocal indentkeys+==~endfunction,=~endsubroutine,=~endmodule | |
| 29 setlocal indentkeys+==~endprogram | |
| 30 endif | |
| 7 | 31 |
| 32 " Determine whether this is a fixed or free format source file | |
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33 " if this hasn't been done yet using the priority: |
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34 " buffer-local value |
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35 " > global value |
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36 " > file extension as in Intel ifort, gcc (gfortran), NAG, Pathscale, and Cray compilers |
| 7 | 37 if !exists("b:fortran_fixed_source") |
| 38 if exists("fortran_free_source") | |
| 39 " User guarantees free source form | |
| 40 let b:fortran_fixed_source = 0 | |
| 41 elseif exists("fortran_fixed_source") | |
| 42 " User guarantees fixed source form | |
| 43 let b:fortran_fixed_source = 1 | |
| 20115 | 44 elseif expand("%:e") =~? '^f\%(90\|95\|03\|08\)$' |
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45 " Free-form file extension defaults as in Intel ifort, gcc(gfortran), NAG, Pathscale, and Cray compilers |
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46 let b:fortran_fixed_source = 0 |
| 20115 | 47 elseif expand("%:e") =~? '^\%(f\|f77\|for\)$' |
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48 " Fixed-form file extension defaults |
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49 let b:fortran_fixed_source = 1 |
| 7 | 50 else |
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51 " Modern fortran still allows both fixed and free source form |
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52 " Assume fixed source form unless signs of free source form |
| 6530 | 53 " are detected in the first five columns of the first s:lmax lines. |
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54 " Detection becomes more accurate and time-consuming if more lines |
| 7 | 55 " are checked. Increase the limit below if you keep lots of comments at |
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56 " the very top of each file and you have a fast computer. |
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57 let s:lmax = 500 |
| 7 | 58 if ( s:lmax > line("$") ) |
| 59 let s:lmax = line("$") | |
| 60 endif | |
| 61 let b:fortran_fixed_source = 1 | |
| 62 let s:ln=1 | |
| 63 while s:ln <= s:lmax | |
| 64 let s:test = strpart(getline(s:ln),0,5) | |
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65 if s:test !~ '^[Cc*]' && s:test !~ '^ *[!#]' && s:test =~ '[^ 0-9\t]' && s:test !~ '^[ 0-9]*\t' |
| 7 | 66 let b:fortran_fixed_source = 0 |
| 67 break | |
| 68 endif | |
| 69 let s:ln = s:ln + 1 | |
| 70 endwhile | |
| 71 endif | |
| 72 endif | |
| 73 | |
| 74 " Define the appropriate indent function but only once | |
| 75 if (b:fortran_fixed_source == 1) | |
| 76 setlocal indentexpr=FortranGetFixedIndent() | |
| 77 if exists("*FortranGetFixedIndent") | |
| 23737 | 78 let &cpoptions = s:cposet |
| 79 unlet s:cposet | |
| 7 | 80 finish |
| 81 endif | |
| 82 else | |
| 83 setlocal indentexpr=FortranGetFreeIndent() | |
| 84 if exists("*FortranGetFreeIndent") | |
| 23737 | 85 let &cpoptions = s:cposet |
| 86 unlet s:cposet | |
| 7 | 87 finish |
| 88 endif | |
| 89 endif | |
| 90 | |
| 91 function FortranGetIndent(lnum) | |
| 92 let ind = indent(a:lnum) | |
| 93 let prevline=getline(a:lnum) | |
| 94 " Strip tail comment | |
| 95 let prevstat=substitute(prevline, '!.*$', '', '') | |
| 2908 | 96 let prev2line=getline(a:lnum-1) |
| 97 let prev2stat=substitute(prev2line, '!.*$', '', '') | |
| 7 | 98 |
| 99 "Indent do loops only if they are all guaranteed to be of do/end do type | |
| 1125 | 100 if exists("b:fortran_do_enddo") || exists("g:fortran_do_enddo") |
| 7 | 101 if prevstat =~? '^\s*\(\d\+\s\)\=\s*\(\a\w*\s*:\)\=\s*do\>' |
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102 let ind = ind + shiftwidth() |
| 7 | 103 endif |
| 104 if getline(v:lnum) =~? '^\s*\(\d\+\s\)\=\s*end\s*do\>' | |
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105 let ind = ind - shiftwidth() |
| 7 | 106 endif |
| 107 endif | |
| 108 | |
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109 "Add a shiftwidth to statements following if, else, else if, case, class, |
| 2908 | 110 "where, else where, forall, type, interface and associate statements |
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111 if prevstat =~? '^\s*\(case\|class\|else\|else\s*if\|else\s*where\)\>' |
| 2908 | 112 \ ||prevstat=~? '^\s*\(type\|interface\|associate\|enum\)\>' |
| 113 \ ||prevstat=~?'^\s*\(\d\+\s\)\=\s*\(\a\w*\s*:\)\=\s*\(forall\|where\|block\)\>' | |
| 114 \ ||prevstat=~? '^\s*\(\d\+\s\)\=\s*\(\a\w*\s*:\)\=\s*if\>' | |
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115 let ind = ind + shiftwidth() |
| 7 | 116 " Remove unwanted indent after logical and arithmetic ifs |
| 117 if prevstat =~? '\<if\>' && prevstat !~? '\<then\>' | |
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118 let ind = ind - shiftwidth() |
| 7 | 119 endif |
| 840 | 120 " Remove unwanted indent after type( statements |
| 2908 | 121 if prevstat =~? '^\s*type\s*(' |
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122 let ind = ind - shiftwidth() |
| 840 | 123 endif |
| 7 | 124 endif |
| 125 | |
| 2908 | 126 "Indent program units unless instructed otherwise |
| 127 if !exists("b:fortran_indent_less") && !exists("g:fortran_indent_less") | |
| 128 let prefix='\(\(pure\|impure\|elemental\|recursive\)\s\+\)\{,2}' | |
| 129 let type='\(\(integer\|real\|double\s\+precision\|complex\|logical' | |
| 130 \.'\|character\|type\|class\)\s*\S*\s\+\)\=' | |
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131 if prevstat =~? '^\s*\(contains\|submodule\|program\)\>' |
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132 \ ||prevstat =~? '^\s*'.'module\>\(\s*\procedure\)\@!' |
| 2908 | 133 \ ||prevstat =~? '^\s*'.prefix.'subroutine\>' |
| 134 \ ||prevstat =~? '^\s*'.prefix.type.'function\>' | |
| 135 \ ||prevstat =~? '^\s*'.type.prefix.'function\>' | |
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136 let ind = ind + shiftwidth() |
| 2908 | 137 endif |
| 138 if getline(v:lnum) =~? '^\s*contains\>' | |
| 139 \ ||getline(v:lnum)=~? '^\s*end\s*' | |
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140 \ .'\(function\|subroutine\|module\|submodule\|program\)\>' |
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141 let ind = ind - shiftwidth() |
| 2908 | 142 endif |
| 143 endif | |
| 144 | |
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145 "Subtract a shiftwidth from else, else if, elsewhere, case, class, end if, |
| 2908 | 146 " end where, end select, end forall, end interface, end associate, |
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147 " end enum, end type, end block and end type statements |
| 7 | 148 if getline(v:lnum) =~? '^\s*\(\d\+\s\)\=\s*' |
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149 \. '\(else\|else\s*if\|else\s*where\|case\|class\|' |
| 2908 | 150 \. 'end\s*\(if\|where\|select\|interface\|' |
| 6530 | 151 \. 'type\|forall\|associate\|enum\|block\)\)\>' |
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152 let ind = ind - shiftwidth() |
| 7 | 153 " Fix indent for case statement immediately after select |
| 22565 | 154 if prevstat =~? '\<select\s*\(case\|type\)\>' |
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155 let ind = ind + shiftwidth() |
| 7 | 156 endif |
| 157 endif | |
| 158 | |
| 2908 | 159 "First continuation line |
| 160 if prevstat =~ '&\s*$' && prev2stat !~ '&\s*$' | |
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161 let ind = ind + shiftwidth() |
| 2908 | 162 endif |
| 163 "Line after last continuation line | |
| 6530 | 164 if prevstat !~ '&\s*$' && prev2stat =~ '&\s*$' && prevstat !~? '\<then\>' |
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165 let ind = ind - shiftwidth() |
| 2908 | 166 endif |
| 167 | |
| 7 | 168 return ind |
| 169 endfunction | |
| 170 | |
| 171 function FortranGetFreeIndent() | |
| 172 "Find the previous non-blank line | |
| 173 let lnum = prevnonblank(v:lnum - 1) | |
| 174 | |
| 175 "Use zero indent at the top of the file | |
| 176 if lnum == 0 | |
| 177 return 0 | |
| 178 endif | |
| 179 | |
| 180 let ind=FortranGetIndent(lnum) | |
| 181 return ind | |
| 182 endfunction | |
| 183 | |
| 184 function FortranGetFixedIndent() | |
| 185 let currline=getline(v:lnum) | |
| 186 "Don't indent comments, continuation lines and labelled lines | |
| 187 if strpart(currline,0,6) =~ '[^ \t]' | |
| 188 let ind = indent(v:lnum) | |
| 189 return ind | |
| 190 endif | |
| 191 | |
| 192 "Find the previous line which is not blank, not a comment, | |
| 193 "not a continuation line, and does not have a label | |
| 194 let lnum = v:lnum - 1 | |
| 195 while lnum > 0 | |
| 196 let prevline=getline(lnum) | |
| 197 if (prevline =~ "^[C*!]") || (prevline =~ "^\s*$") | |
| 198 \ || (strpart(prevline,5,1) !~ "[ 0]") | |
| 199 " Skip comments, blank lines and continuation lines | |
| 200 let lnum = lnum - 1 | |
| 201 else | |
| 202 let test=strpart(prevline,0,5) | |
| 203 if test =~ "[0-9]" | |
| 204 " Skip lines with statement numbers | |
| 205 let lnum = lnum - 1 | |
| 206 else | |
| 207 break | |
| 208 endif | |
| 209 endif | |
| 210 endwhile | |
| 211 | |
| 212 "First line must begin at column 7 | |
| 213 if lnum == 0 | |
| 214 return 6 | |
| 215 endif | |
| 216 | |
| 217 let ind=FortranGetIndent(lnum) | |
| 218 return ind | |
| 219 endfunction | |
| 220 | |
| 23737 | 221 let &cpoptions = s:cposet |
| 7 | 222 unlet s:cposet |
| 223 | |
| 224 " vim:sw=2 tw=130 |