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| 1 | +" Vim indent file | |
| 2 | +" Language: Java | |
| 3 | +" Maintainer: Toby Allsopp <toby.allsopp@peace.com> (resigned) | |
| 4 | +" Last Change: 2005 Mar 28 | |
| 5 | + | |
| 6 | +" Only load this indent file when no other was loaded. | |
| 7 | +if exists("b:did_indent") | |
| 8 | + finish | |
| 9 | +endif | |
| 10 | +let b:did_indent = 1 | |
| 11 | + | |
| 12 | +" Indent Java anonymous classes correctly. | |
| 13 | +setlocal cindent cinoptions& cinoptions+=j1 | |
| 14 | + | |
| 15 | +" The "extends" and "implements" lines start off with the wrong indent. | |
| 16 | +setlocal indentkeys& indentkeys+=0=extends indentkeys+=0=implements | |
| 17 | + | |
| 18 | +" Set the function to do the work. | |
| 19 | +setlocal indentexpr=GetJavaIndent() | |
| 20 | + | |
| 21 | +let b:undo_indent = "set cin< cino< indentkeys< indentexpr<" | |
| 22 | + | |
| 23 | +" Only define the function once. | |
| 24 | +if exists("*GetJavaIndent") | |
| 25 | + finish | |
| 26 | +endif | |
| 27 | + | |
| 28 | +function! SkipJavaBlanksAndComments(startline) | |
| 29 | + let lnum = a:startline | |
| 30 | + while lnum > 1 | |
| 31 | + let lnum = prevnonblank(lnum) | |
| 32 | + if getline(lnum) =~ '\*/\s*$' | |
| 33 | + while getline(lnum) !~ '/\*' && lnum > 1 | |
| 34 | + let lnum = lnum - 1 | |
| 35 | + endwhile | |
| 36 | + if getline(lnum) =~ '^\s*/\*' | |
| 37 | + let lnum = lnum - 1 | |
| 38 | + else | |
| 39 | + break | |
| 40 | + endif | |
| 41 | + elseif getline(lnum) =~ '^\s*//' | |
| 42 | + let lnum = lnum - 1 | |
| 43 | + else | |
| 44 | + break | |
| 45 | + endif | |
| 46 | + endwhile | |
| 47 | + return lnum | |
| 48 | +endfunction | |
| 49 | + | |
| 50 | +function GetJavaIndent() | |
| 51 | + | |
| 52 | + " Java is just like C; use the built-in C indenting and then correct a few | |
| 53 | + " specific cases. | |
| 54 | + let theIndent = cindent(v:lnum) | |
| 55 | + | |
| 56 | + " If we're in the middle of a comment then just trust cindent | |
| 57 | + if getline(v:lnum) =~ '^\s*\*' | |
| 58 | + return theIndent | |
| 59 | + endif | |
| 60 | + | |
| 61 | + " find start of previous line, in case it was a continuation line | |
| 62 | + let lnum = SkipJavaBlanksAndComments(v:lnum - 1) | |
| 63 | + let prev = lnum | |
| 64 | + while prev > 1 | |
| 65 | + let next_prev = SkipJavaBlanksAndComments(prev - 1) | |
| 66 | + if getline(next_prev) !~ ',\s*$' | |
| 67 | + break | |
| 68 | + endif | |
| 69 | + let prev = next_prev | |
| 70 | + endwhile | |
| 71 | + | |
| 72 | + " Try to align "throws" lines for methods and "extends" and "implements" for | |
| 73 | + " classes. | |
| 74 | + if getline(v:lnum) =~ '^\s*\(extends\|implements\)\>' | |
| 75 | + \ && getline(lnum) !~ '^\s*\(extends\|implements\)\>' | |
| 76 | + let theIndent = theIndent + &sw | |
| 77 | + endif | |
| 78 | + | |
| 79 | + " correct for continuation lines of "throws", "implements" and "extends" | |
| 80 | + let cont_kw = matchstr(getline(prev), | |
| 81 | + \ '^\s*\zs\(throws\|implements\|extends\)\>\ze.*,\s*$') | |
| 82 | + if strlen(cont_kw) > 0 | |
| 83 | + let amount = strlen(cont_kw) + 1 | |
| 84 | + if getline(lnum) !~ ',\s*$' | |
| 85 | + let theIndent = theIndent - (amount + &sw) | |
| 86 | + if theIndent < 0 | |
| 87 | + let theIndent = 0 | |
| 88 | + endif | |
| 89 | + elseif prev == lnum | |
| 90 | + let theIndent = theIndent + amount | |
| 91 | + if cont_kw ==# 'throws' | |
| 92 | + let theIndent = theIndent + &sw | |
| 93 | + endif | |
| 94 | + endif | |
| 95 | + elseif getline(prev) =~ '^\s*\(throws\|implements\|extends\)\>' | |
| 96 | + \ && (getline(prev) =~ '{\s*$' | |
| 97 | + \ || getline(v:lnum) =~ '^\s*{\s*$') | |
| 98 | + let theIndent = theIndent - &sw | |
| 99 | + endif | |
| 100 | + | |
| 101 | + " When the line starts with a }, try aligning it with the matching {, | |
| 102 | + " skipping over "throws", "extends" and "implements" clauses. | |
| 103 | + if getline(v:lnum) =~ '^\s*}\s*\(//.*\|/\*.*\)\=$' | |
| 104 | + call cursor(v:lnum, 1) | |
| 105 | + silent normal % | |
| 106 | + let lnum = line('.') | |
| 107 | + if lnum < v:lnum | |
| 108 | + while lnum > 1 | |
| 109 | + let next_lnum = SkipJavaBlanksAndComments(lnum - 1) | |
| 110 | + if getline(lnum) !~ '^\s*\(throws\|extends\|implements\)\>' | |
| 111 | + \ && getline(next_lnum) !~ ',\s*$' | |
| 112 | + break | |
| 113 | + endif | |
| 114 | + let lnum = prevnonblank(next_lnum) | |
| 115 | + endwhile | |
| 116 | + return indent(lnum) | |
| 117 | + endif | |
| 118 | + endif | |
| 119 | + | |
| 120 | + " Below a line starting with "}" never indent more. Needed for a method | |
| 121 | + " below a method with an indented "throws" clause. | |
| 122 | + let lnum = SkipJavaBlanksAndComments(v:lnum - 1) | |
| 123 | + if getline(lnum) =~ '^\s*}\s*\(//.*\|/\*.*\)\=$' && indent(lnum) < theIndent | |
| 124 | + let theIndent = indent(lnum) | |
| 125 | + endif | |
| 126 | + | |
| 127 | + return theIndent | |
| 128 | +endfunction | |
| 129 | + | |
| 130 | +" vi: sw=2 et | |