home *** CD-ROM | disk | FTP | other *** search
- " Vim indent file
- " Language: Pascal
- " Maintainer: Neil Carter <n.carter@swansea.ac.uk>
- " Created: 2004 Jul 13
- " Last Change: 2011 Apr 01
- "
- " This is version 2.0, a complete rewrite.
- "
- " For further documentation, see http://psy.swansea.ac.uk/staff/carter/vim/
-
-
- if exists("b:did_indent")
- finish
- endif
- let b:did_indent = 1
-
- setlocal indentexpr=GetPascalIndent(v:lnum)
- setlocal indentkeys&
- setlocal indentkeys+==end;,==const,==type,==var,==begin,==repeat,==until,==for
- setlocal indentkeys+==program,==function,==procedure,==object,==private
- setlocal indentkeys+==record,==if,==else,==case
-
- if exists("*GetPascalIndent")
- finish
- endif
-
-
- function! s:GetPrevNonCommentLineNum( line_num )
-
- " Skip lines starting with a comment
- let SKIP_LINES = '^\s*\(\((\*\)\|\(\*\ \)\|\(\*)\)\|{\|}\)'
-
- let nline = a:line_num
- while nline > 0
- let nline = prevnonblank(nline-1)
- if getline(nline) !~? SKIP_LINES
- break
- endif
- endwhile
-
- return nline
- endfunction
-
-
- function! s:PurifyCode( line_num )
- " Strip any trailing comments and whitespace
- let pureline = 'TODO'
- return pureline
- endfunction
-
-
- function! GetPascalIndent( line_num )
-
- " Line 0 always goes at column 0
- if a:line_num == 0
- return 0
- endif
-
- let this_codeline = getline( a:line_num )
-
-
- " SAME INDENT
-
- " Middle of a three-part comment
- if this_codeline =~ '^\s*\*'
- return indent( a:line_num - 1)
- endif
-
-
- " COLUMN 1 ALWAYS
-
- " Last line of the program
- if this_codeline =~ '^\s*end\.'
- return 0
- endif
-
- " Compiler directives, allowing "(*" and "{"
- "if this_codeline =~ '^\s*\({\|(\*\)$\(IFDEF\|IFNDEF\|ELSE\|ENDIF\)'
- if this_codeline =~ '^\s*\({\|(\*\)\$'
- return 0
- endif
-
- " section headers
- if this_codeline =~ '^\s*\(program\|procedure\|function\|type\)\>'
- return 0
- endif
-
- " Subroutine separators, lines ending with "const" or "var"
- if this_codeline =~ '^\s*\((\*\ _\+\ \*)\|\(const\|var\)\)$'
- return 0
- endif
-
-
- " OTHERWISE, WE NEED TO LOOK FURTHER BACK...
-
- let prev_codeline_num = s:GetPrevNonCommentLineNum( a:line_num )
- let prev_codeline = getline( prev_codeline_num )
- let indnt = indent( prev_codeline_num )
-
-
- " INCREASE INDENT
-
- " If the PREVIOUS LINE ended in these items, always indent
- if prev_codeline =~ '\<\(type\|const\|var\)$'
- return indnt + &shiftwidth
- endif
-
- if prev_codeline =~ '\<repeat$'
- if this_codeline !~ '^\s*until\>'
- return indnt + &shiftwidth
- else
- return indnt
- endif
- endif
-
- if prev_codeline =~ '\<\(begin\|record\)$'
- if this_codeline !~ '^\s*end\>'
- return indnt + &shiftwidth
- else
- return indnt
- endif
- endif
-
- " If the PREVIOUS LINE ended with these items, indent if not
- " followed by "begin"
- if prev_codeline =~ '\<\(\|else\|then\|do\)$' || prev_codeline =~ ':$'
- if this_codeline !~ '^\s*begin\>'
- return indnt + &shiftwidth
- else
- " If it does start with "begin" then keep the same indent
- "return indnt + &shiftwidth
- return indnt
- endif
- endif
-
- " Inside a parameter list (i.e. a "(" without a ")"). ???? Considers
- " only the line before the current one. TODO: Get it working for
- " parameter lists longer than two lines.
- if prev_codeline =~ '([^)]\+$'
- return indnt + &shiftwidth
- endif
-
-
- " DECREASE INDENT
-
- " Lines starting with "else", but not following line ending with
- " "end".
- if this_codeline =~ '^\s*else\>' && prev_codeline !~ '\<end$'
- return indnt - &shiftwidth
- endif
-
- " Lines after a single-statement branch/loop.
- " Two lines before ended in "then", "else", or "do"
- " Previous line didn't end in "begin"
- let prev2_codeline_num = s:GetPrevNonCommentLineNum( prev_codeline_num )
- let prev2_codeline = getline( prev2_codeline_num )
- if prev2_codeline =~ '\<\(then\|else\|do\)$' && prev_codeline !~ '\<begin$'
- " If the next code line after a single statement branch/loop
- " starts with "end", "except" or "finally", we need an
- " additional unindentation.
- if this_codeline =~ '^\s*\(end;\|except\|finally\|\)$'
- " Note that we don't return from here.
- return indnt - &shiftwidth - &shiftwidth
- endif
- return indnt - &shiftwidth
- endif
-
- " Lines starting with "until" or "end". This rule must be overridden
- " by the one for "end" after a single-statement branch/loop. In
- " other words that rule should come before this one.
- if this_codeline =~ '^\s*\(end\|until\)\>'
- return indnt - &shiftwidth
- endif
-
-
- " MISCELLANEOUS THINGS TO CATCH
-
- " Most "begin"s will have been handled by now. Any remaining
- " "begin"s on their own line should go in column 1.
- if this_codeline =~ '^\s*begin$'
- return 0
- endif
-
-
- " ____________________________________________________________________
- " Object/Borland Pascal/Delphi Extensions
- "
- " Note that extended-pascal is handled here, unless it is simpler to
- " handle them in the standard-pascal section above.
-
-
- " COLUMN 1 ALWAYS
-
- " section headers at start of line.
- if this_codeline =~ '^\s*\(interface\|implementation\|uses\|unit\)\>'
- return 0
- endif
-
-
- " INDENT ONCE
-
- " If the PREVIOUS LINE ended in these items, always indent.
- if prev_codeline =~ '^\s*\(unit\|uses\|try\|except\|finally\|private\|protected\|public\|published\)$'
- return indnt + &shiftwidth
- endif
-
- " ???? Indent "procedure" and "functions" if they appear within an
- " class/object definition. But that means overriding standard-pascal
- " rule where these words always go in column 1.
-
-
- " UNINDENT ONCE
-
- if this_codeline =~ '^\s*\(except\|finally\)$'
- return indnt - &shiftwidth
- endif
-
- if this_codeline =~ '^\s*\(private\|protected\|public\|published\)$'
- return indnt - &shiftwidth
- endif
-
-
- " ____________________________________________________________________
-
- " If nothing changed, return same indent.
- return indnt
- endfunction
-
-