Mercurial > vim
annotate runtime/indent/fortran.vim @ 18486:9d887cad7315
Added tag v8.1.2237 for changeset 63ee3c2b140fe1b4801389872a8e47aec19d028b
| author | Bram Moolenaar <Bram@vim.org> |
|---|---|
| date | Thu, 31 Oct 2019 20:00:04 +0100 |
| parents | 368468ef35cf |
| children | bd021eb62e73 |
| rev | line source |
|---|---|
| 7 | 1 " Vim indent file |
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2 " Language: Fortran 2008 (and older: Fortran 2003, 95, 90, and 77) |
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3 " Version: 47 |
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4 " Last Change: 2016 Oct. 29 |
| 6530 | 5 " Maintainer: Ajit J. Thakkar <ajit@unb.ca>; <http://www2.unb.ca/~ajit/> |
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6 " Usage: For instructions, do :help fortran-indent from Vim |
| 6530 | 7 " Credits: |
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8 " Useful suggestions were made, in chronological order, by: |
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9 " Albert Oliver Serra, Takuya Fujiwara and Philipp Edelmann. |
| 7 | 10 |
| 11 " Only load this indent file when no other was loaded. | |
| 12 if exists("b:did_indent") | |
| 13 finish | |
| 14 endif | |
| 15 let b:did_indent = 1 | |
| 16 | |
| 3237 | 17 let s:cposet=&cpoptions |
| 18 set cpoptions&vim | |
| 19 | |
| 7 | 20 setlocal indentkeys+==~end,=~case,=~if,=~else,=~do,=~where,=~elsewhere,=~select |
| 2908 | 21 setlocal indentkeys+==~endif,=~enddo,=~endwhere,=~endselect,=~elseif |
| 22 setlocal indentkeys+==~type,=~interface,=~forall,=~associate,=~block,=~enum | |
| 23 setlocal indentkeys+==~endforall,=~endassociate,=~endblock,=~endenum | |
| 24 if exists("b:fortran_indent_more") || exists("g:fortran_indent_more") | |
| 25 setlocal indentkeys+==~function,=~subroutine,=~module,=~contains,=~program | |
| 26 setlocal indentkeys+==~endfunction,=~endsubroutine,=~endmodule | |
| 27 setlocal indentkeys+==~endprogram | |
| 28 endif | |
| 7 | 29 |
| 30 " Determine whether this is a fixed or free format source file | |
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31 " if this hasn't been done yet using the priority: |
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32 " buffer-local value |
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33 " > global value |
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34 " > file extension as in Intel ifort, gcc (gfortran), NAG, Pathscale, and Cray compilers |
| 7 | 35 if !exists("b:fortran_fixed_source") |
| 36 if exists("fortran_free_source") | |
| 37 " User guarantees free source form | |
| 38 let b:fortran_fixed_source = 0 | |
| 39 elseif exists("fortran_fixed_source") | |
| 40 " User guarantees fixed source form | |
| 41 let b:fortran_fixed_source = 1 | |
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42 elseif expand("%:e") ==? "f\<90\|95\|03\|08\>" |
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43 " Free-form file extension defaults as in Intel ifort, gcc(gfortran), NAG, Pathscale, and Cray compilers |
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44 let b:fortran_fixed_source = 0 |
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45 elseif expand("%:e") ==? "f\|f77\|for" |
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46 " Fixed-form file extension defaults |
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47 let b:fortran_fixed_source = 1 |
| 7 | 48 else |
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49 " Modern fortran still allows both fixed and free source form |
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50 " Assume fixed source form unless signs of free source form |
| 6530 | 51 " are detected in the first five columns of the first s:lmax lines. |
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52 " Detection becomes more accurate and time-consuming if more lines |
| 7 | 53 " are checked. Increase the limit below if you keep lots of comments at |
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54 " the very top of each file and you have a fast computer. |
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55 let s:lmax = 500 |
| 7 | 56 if ( s:lmax > line("$") ) |
| 57 let s:lmax = line("$") | |
| 58 endif | |
| 59 let b:fortran_fixed_source = 1 | |
| 60 let s:ln=1 | |
| 61 while s:ln <= s:lmax | |
| 62 let s:test = strpart(getline(s:ln),0,5) | |
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63 if s:test !~ '^[Cc*]' && s:test !~ '^ *[!#]' && s:test =~ '[^ 0-9\t]' && s:test !~ '^[ 0-9]*\t' |
| 7 | 64 let b:fortran_fixed_source = 0 |
| 65 break | |
| 66 endif | |
| 67 let s:ln = s:ln + 1 | |
| 68 endwhile | |
| 69 endif | |
| 70 endif | |
| 71 | |
| 72 " Define the appropriate indent function but only once | |
| 73 if (b:fortran_fixed_source == 1) | |
| 74 setlocal indentexpr=FortranGetFixedIndent() | |
| 75 if exists("*FortranGetFixedIndent") | |
| 76 finish | |
| 77 endif | |
| 78 else | |
| 79 setlocal indentexpr=FortranGetFreeIndent() | |
| 80 if exists("*FortranGetFreeIndent") | |
| 81 finish | |
| 82 endif | |
| 83 endif | |
| 84 | |
| 85 function FortranGetIndent(lnum) | |
| 86 let ind = indent(a:lnum) | |
| 87 let prevline=getline(a:lnum) | |
| 88 " Strip tail comment | |
| 89 let prevstat=substitute(prevline, '!.*$', '', '') | |
| 2908 | 90 let prev2line=getline(a:lnum-1) |
| 91 let prev2stat=substitute(prev2line, '!.*$', '', '') | |
| 7 | 92 |
| 93 "Indent do loops only if they are all guaranteed to be of do/end do type | |
| 1125 | 94 if exists("b:fortran_do_enddo") || exists("g:fortran_do_enddo") |
| 7 | 95 if prevstat =~? '^\s*\(\d\+\s\)\=\s*\(\a\w*\s*:\)\=\s*do\>' |
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96 let ind = ind + shiftwidth() |
| 7 | 97 endif |
| 98 if getline(v:lnum) =~? '^\s*\(\d\+\s\)\=\s*end\s*do\>' | |
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99 let ind = ind - shiftwidth() |
| 7 | 100 endif |
| 101 endif | |
| 102 | |
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103 "Add a shiftwidth to statements following if, else, else if, case, class, |
| 2908 | 104 "where, else where, forall, type, interface and associate statements |
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105 if prevstat =~? '^\s*\(case\|class\|else\|else\s*if\|else\s*where\)\>' |
| 2908 | 106 \ ||prevstat=~? '^\s*\(type\|interface\|associate\|enum\)\>' |
| 107 \ ||prevstat=~?'^\s*\(\d\+\s\)\=\s*\(\a\w*\s*:\)\=\s*\(forall\|where\|block\)\>' | |
| 108 \ ||prevstat=~? '^\s*\(\d\+\s\)\=\s*\(\a\w*\s*:\)\=\s*if\>' | |
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109 let ind = ind + shiftwidth() |
| 7 | 110 " Remove unwanted indent after logical and arithmetic ifs |
| 111 if prevstat =~? '\<if\>' && prevstat !~? '\<then\>' | |
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112 let ind = ind - shiftwidth() |
| 7 | 113 endif |
| 840 | 114 " Remove unwanted indent after type( statements |
| 2908 | 115 if prevstat =~? '^\s*type\s*(' |
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116 let ind = ind - shiftwidth() |
| 840 | 117 endif |
| 7 | 118 endif |
| 119 | |
| 2908 | 120 "Indent program units unless instructed otherwise |
| 121 if !exists("b:fortran_indent_less") && !exists("g:fortran_indent_less") | |
| 122 let prefix='\(\(pure\|impure\|elemental\|recursive\)\s\+\)\{,2}' | |
| 123 let type='\(\(integer\|real\|double\s\+precision\|complex\|logical' | |
| 124 \.'\|character\|type\|class\)\s*\S*\s\+\)\=' | |
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125 if prevstat =~? '^\s*\(contains\|submodule\|program\)\>' |
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126 \ ||prevstat =~? '^\s*'.'module\>\(\s*\procedure\)\@!' |
| 2908 | 127 \ ||prevstat =~? '^\s*'.prefix.'subroutine\>' |
| 128 \ ||prevstat =~? '^\s*'.prefix.type.'function\>' | |
| 129 \ ||prevstat =~? '^\s*'.type.prefix.'function\>' | |
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130 let ind = ind + shiftwidth() |
| 2908 | 131 endif |
| 132 if getline(v:lnum) =~? '^\s*contains\>' | |
| 133 \ ||getline(v:lnum)=~? '^\s*end\s*' | |
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134 \ .'\(function\|subroutine\|module\|submodule\|program\)\>' |
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135 let ind = ind - shiftwidth() |
| 2908 | 136 endif |
| 137 endif | |
| 138 | |
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139 "Subtract a shiftwidth from else, else if, elsewhere, case, class, end if, |
| 2908 | 140 " end where, end select, end forall, end interface, end associate, |
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141 " end enum, end type, end block and end type statements |
| 7 | 142 if getline(v:lnum) =~? '^\s*\(\d\+\s\)\=\s*' |
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143 \. '\(else\|else\s*if\|else\s*where\|case\|class\|' |
| 2908 | 144 \. 'end\s*\(if\|where\|select\|interface\|' |
| 6530 | 145 \. 'type\|forall\|associate\|enum\|block\)\)\>' |
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146 let ind = ind - shiftwidth() |
| 7 | 147 " Fix indent for case statement immediately after select |
| 2908 | 148 if prevstat =~? '\<select\s\+\(case\|type\)\>' |
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149 let ind = ind + shiftwidth() |
| 7 | 150 endif |
| 151 endif | |
| 152 | |
| 2908 | 153 "First continuation line |
| 154 if prevstat =~ '&\s*$' && prev2stat !~ '&\s*$' | |
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155 let ind = ind + shiftwidth() |
| 2908 | 156 endif |
| 157 "Line after last continuation line | |
| 6530 | 158 if prevstat !~ '&\s*$' && prev2stat =~ '&\s*$' && prevstat !~? '\<then\>' |
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159 let ind = ind - shiftwidth() |
| 2908 | 160 endif |
| 161 | |
| 7 | 162 return ind |
| 163 endfunction | |
| 164 | |
| 165 function FortranGetFreeIndent() | |
| 166 "Find the previous non-blank line | |
| 167 let lnum = prevnonblank(v:lnum - 1) | |
| 168 | |
| 169 "Use zero indent at the top of the file | |
| 170 if lnum == 0 | |
| 171 return 0 | |
| 172 endif | |
| 173 | |
| 174 let ind=FortranGetIndent(lnum) | |
| 175 return ind | |
| 176 endfunction | |
| 177 | |
| 178 function FortranGetFixedIndent() | |
| 179 let currline=getline(v:lnum) | |
| 180 "Don't indent comments, continuation lines and labelled lines | |
| 181 if strpart(currline,0,6) =~ '[^ \t]' | |
| 182 let ind = indent(v:lnum) | |
| 183 return ind | |
| 184 endif | |
| 185 | |
| 186 "Find the previous line which is not blank, not a comment, | |
| 187 "not a continuation line, and does not have a label | |
| 188 let lnum = v:lnum - 1 | |
| 189 while lnum > 0 | |
| 190 let prevline=getline(lnum) | |
| 191 if (prevline =~ "^[C*!]") || (prevline =~ "^\s*$") | |
| 192 \ || (strpart(prevline,5,1) !~ "[ 0]") | |
| 193 " Skip comments, blank lines and continuation lines | |
| 194 let lnum = lnum - 1 | |
| 195 else | |
| 196 let test=strpart(prevline,0,5) | |
| 197 if test =~ "[0-9]" | |
| 198 " Skip lines with statement numbers | |
| 199 let lnum = lnum - 1 | |
| 200 else | |
| 201 break | |
| 202 endif | |
| 203 endif | |
| 204 endwhile | |
| 205 | |
| 206 "First line must begin at column 7 | |
| 207 if lnum == 0 | |
| 208 return 6 | |
| 209 endif | |
| 210 | |
| 211 let ind=FortranGetIndent(lnum) | |
| 212 return ind | |
| 213 endfunction | |
| 214 | |
| 215 let &cpoptions=s:cposet | |
| 216 unlet s:cposet | |
| 217 | |
| 218 " vim:sw=2 tw=130 |