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91 lines
3.1 KiB
VimL
Vendored
91 lines
3.1 KiB
VimL
Vendored
" Vim indent file
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" Language: Fortran 95, Fortran 90 (free source form)
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" Description: Indentation rules for continued statements and preprocessor
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" instructions
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" Indentation rules for subroutine, function and forall
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" statements
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" Installation: Place this script in the $HOME/.vim/after/indent/ directory
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" and use it with Vim 7.1 and Ajit J. Thakkar's Vim scripts
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" for Fortran (http://www.unb.ca/chem/ajit/)
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" Maintainer: Sébastien Burton <sebastien.burton@gmail.com>
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" License: Public domain
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" Version: 0.4
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" Last Change: 2011 May 25
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" Modified indentation rules are used if the Fortran source code is free
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" source form, else nothing is done
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if (b:fortran_fixed_source != 1)
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setlocal indentexpr=SebuFortranGetFreeIndent()
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setlocal indentkeys+==~subroutine,=~function,=~forall
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setlocal indentkeys+==~endsubroutine,=~endfunction,=~endforall
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" Only define the functions once
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if exists("*SebuFortranGetFreeIndent")
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finish
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endif
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else
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finish
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endif
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" SebuFortranGetFreeIndent() is modified FortranGetFreeIndent():
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" Returns the indentation of the current line
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function SebuFortranGetFreeIndent()
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" No indentation for preprocessor instructions
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if getline(v:lnum) =~ '^\s*#'
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return 0
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endif
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" Previous non-blank non-preprocessor line
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let lnum = SebuPrevNonBlankNonCPP(v:lnum-1)
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" No indentation at the top of the file
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if lnum == 0
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return 0
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endif
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" Original indentation rules
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let ind = FortranGetIndent(lnum)
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" Continued statement indentation rule
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" Truth table (kind of)
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" Symbol '&' | Result
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" No 0 0 | 0 No change
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" Appearing 0 1 | 1 Indent
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" Disappering 1 0 | -1 Unindent
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" Continued 1 1 | 0 No change
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let result = -SebuIsFortranContStat(lnum-1)+SebuIsFortranContStat(lnum)
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" One shiftwidth indentation for continued statements
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let ind += result*&sw
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" One shiftwidth indentation for subroutine, function and forall's bodies
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let line = getline(lnum)
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if line =~? '^\s*\(\(recursive\s*\)\=pure\|elemental\)\=\s*subroutine'
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\ || line =~? '^\s*\(\(recursive\s*\)\=pure\|elemental\)\=\s*'
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\ . '\(\(integer\|real\|complex\|logical\|character\|type\)'
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\ . '\((\S\+)\)\=\)\=\s*function'
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\ || line =~? '^\s*\(forall\)'
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let ind += &sw
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endif
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if getline(v:lnum) =~? '^\s*end\s*\(subroutine\|function\|forall\)'
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let ind -= &sw
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endif
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" You shouldn't use variable names begining with 'puresubroutine',
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" 'function', 'endforall', etc. as these would make the indentation
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" collapse: it's easier to pay attention than to implement the exceptions
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return ind
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endfunction
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" SebuPrevNonBlankNonCPP(lnum) is modified prevnonblank(lnum):
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" Returns the line number of the first line at or above 'lnum' that is
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" neither blank nor preprocessor instruction.
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function SebuPrevNonBlankNonCPP(lnum)
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let lnum = prevnonblank(a:lnum)
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while getline(lnum) =~ '^#'
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let lnum = prevnonblank(lnum-1)
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endwhile
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return lnum
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endfunction
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" SebuIsFortranContStat(lnum):
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" Returns 1 if the 'lnum' statement ends with the Fortran continue mark '&'
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" and 0 else.
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function SebuIsFortranContStat(lnum)
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let line = getline(a:lnum)
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return substitute(line,'!.*$','','') =~ '&\s*$'
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endfunction
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