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Diffstat (limited to 'vim73/indent/pascal.vim')
| -rw-r--r-- | vim73/indent/pascal.vim | 173 |
1 files changed, 173 insertions, 0 deletions
diff --git a/vim73/indent/pascal.vim b/vim73/indent/pascal.vim new file mode 100644 index 0000000..b1a652d --- /dev/null +++ b/vim73/indent/pascal.vim @@ -0,0 +1,173 @@ +" Vim indent file +" Language: Pascal +" Maintainer: Neil Carter <n.carter@swansea.ac.uk> +" Created: 2004 Jul 13 +" Last Change: 2005 Jul 05 + + +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! 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 ) + + " If in the middle of a three-part comment + if this_codeline =~ '^\s*\*' + return indent( a:line_num ) + endif + + let prev_codeline_num = s:GetPrevNonCommentLineNum( a:line_num ) + let prev_codeline = getline( prev_codeline_num ) + let indnt = indent( prev_codeline_num ) + + " Compiler directives should always go in column zero. + if this_codeline =~ '^\s*{\(\$IFDEF\|\$ELSE\|\$ENDIF\)' + return 0 + endif + + " These items have nothing before or after (not even a comment), and + " go on column 0. Make sure that the ^\s* is followed by \( to make + " ORs work properly, and not include the start of line (this must + " always appear). + " The bracketed expression with the underline is a routine + " separator. This is one case where we do indent comment lines. + if this_codeline =~ '^\s*\((\*\ _\+\ \*)\|\<\(const\|var\)\>\)$' + return 0 + endif + + " These items may have text after them, and go on column 0 (in most + " cases). The problem is that "function" and "procedure" keywords + " should be indented if within a class declaration. + if this_codeline =~ '^\s*\<\(program\|type\|uses\|procedure\|function\)\>' + return 0 + endif + + " BEGIN + " If the begin does not come after "if", "for", or "else", then it + " goes in column 0 + if this_codeline =~ '^\s*begin\>' && prev_codeline !~ '^\s*\<\(if\|for\|else\)\>' + return 0 + endif + + " These keywords are indented once only. + if this_codeline =~ '^\s*\<\(private\)\>' + return &shiftwidth + endif + + " If the PREVIOUS LINE contained these items, the current line is + " always indented once. + if prev_codeline =~ '^\s*\<\(type\|uses\)\>' + return &shiftwidth + endif + + " These keywords are indented once only. Possibly surrounded by + " other chars. + if this_codeline =~ '^.\+\<\(object\|record\)\>' + return &shiftwidth + endif + + " If the previous line was indenting... + if prev_codeline =~ '^\s*\<\(for\|if\|case\|else\|end\ else\)\>' + " then indent. + let indnt = indnt + &shiftwidth + " BUT... if this is the start of a multistatement block then we + " need to align the begin with the previous line. + if this_codeline =~ '^\s*begin\>' + return indnt - &shiftwidth + endif + + " We also need to keep the indentation level constant if the + " whole if-then statement was on one line. + if prev_codeline =~ '\<then\>.\+' + let indnt = indnt - &shiftwidth + endif + endif + + " PREVIOUS-LINE BEGIN + " If the previous line was an indenting keyword then indent once... + if prev_codeline =~ '^\s*\<\(const\|var\|begin\|repeat\|private\)\>' + " But only if this is another var in a list. + if this_codeline !~ '^\s*var\>' + return indnt + &shiftwidth + endif + endif + + " PREVIOUS-LINE BEGIN + " Indent code after a case statement begin + if prev_codeline =~ '\:\ begin\>' + return indnt + &shiftwidth + endif + + " These words may have text before them on the line (hence the .*) + " but are followed by nothing. Always indent once only. + if prev_codeline =~ '^\(.*\|\s*\)\<\(object\|record\)\>$' + return indnt + &shiftwidth + endif + + " If we just closed a bracket that started on a previous line, then + " unindent. But don't return yet -- we need to check for further + " unindentation (for end/until/else) + if prev_codeline =~ '^[^(]*[^*])' + let indnt = indnt - &shiftwidth + endif + + " At the end of a block, we have to unindent both the current line + " (the "end" for instance) and the newly-created line. + if this_codeline =~ '^\s*\<\(end\|until\|else\)\>' + return indnt - &shiftwidth + endif + + " If we have opened a bracket and it continues over one line, + " then indent once. + " + " RE = an opening bracket followed by any amount of anything other + " than a closing bracket and then the end-of-line. + " + " If we didn't include the end of line, this RE would match even + " closed brackets, since it would match everything up to the closing + " bracket. + " + " This test isn't clever enough to handle brackets inside strings or + " comments. + if prev_codeline =~ '([^*]\=[^)]*$' + return indnt + &shiftwidth + endif + + return indnt +endfunction + |