| Bram Moolenaar | 071d427 | 2004-06-13 20:20:40 +0000 | [diff] [blame] | 1 | " Vim indent file |
| 2 | " Language: Java |
| 3 | " Maintainer: Toby Allsopp <toby.allsopp@peace.com> |
| 4 | " Last Change: 2003 Oct 21 |
| 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 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 | " Only define the function once. |
| 22 | if exists("*GetJavaIndent") |
| 23 | finish |
| 24 | endif |
| 25 | |
| 26 | function! SkipJavaBlanksAndComments(startline) |
| 27 | let lnum = a:startline |
| 28 | while lnum > 1 |
| 29 | let lnum = prevnonblank(lnum) |
| 30 | if getline(lnum) =~ '\*/\s*$' |
| 31 | while getline(lnum) !~ '/\*' && lnum > 1 |
| 32 | let lnum = lnum - 1 |
| 33 | endwhile |
| 34 | if getline(lnum) =~ '^\s*/\*' |
| 35 | let lnum = lnum - 1 |
| 36 | else |
| 37 | break |
| 38 | endif |
| 39 | elseif getline(lnum) =~ '^\s*//' |
| 40 | let lnum = lnum - 1 |
| 41 | else |
| 42 | break |
| 43 | endif |
| 44 | endwhile |
| 45 | return lnum |
| 46 | endfunction |
| 47 | |
| 48 | function GetJavaIndent() |
| 49 | |
| 50 | " Java is just like C; use the built-in C indenting and then correct a few |
| 51 | " specific cases. |
| 52 | let theIndent = cindent(v:lnum) |
| 53 | |
| 54 | " If we're in the middle of a comment then just trust cindent |
| 55 | if getline(v:lnum) =~ '^\s*\*' |
| 56 | return theIndent |
| 57 | endif |
| 58 | |
| 59 | " find start of previous line, in case it was a continuation line |
| 60 | let lnum = SkipJavaBlanksAndComments(v:lnum - 1) |
| 61 | let prev = lnum |
| 62 | while prev > 1 |
| 63 | let next_prev = SkipJavaBlanksAndComments(prev - 1) |
| 64 | if getline(next_prev) !~ ',\s*$' |
| 65 | break |
| 66 | endif |
| 67 | let prev = next_prev |
| 68 | endwhile |
| 69 | |
| 70 | " Try to align "throws" lines for methods and "extends" and "implements" for |
| 71 | " classes. |
| 72 | if getline(v:lnum) =~ '^\s*\(extends\|implements\)\>' |
| 73 | \ && getline(lnum) !~ '^\s*\(extends\|implements\)\>' |
| 74 | let theIndent = theIndent + &sw |
| 75 | endif |
| 76 | |
| 77 | " correct for continuation lines of "throws", "implements" and "extends" |
| 78 | let cont_kw = matchstr(getline(prev), |
| 79 | \ '^\s*\zs\(throws\|implements\|extends\)\>\ze.*,\s*$') |
| 80 | if strlen(cont_kw) > 0 |
| 81 | let amount = strlen(cont_kw) + 1 |
| 82 | if getline(lnum) !~ ',\s*$' |
| 83 | let theIndent = theIndent - (amount + &sw) |
| 84 | if theIndent < 0 |
| 85 | let theIndent = 0 |
| 86 | endif |
| 87 | elseif prev == lnum |
| 88 | let theIndent = theIndent + amount |
| 89 | if cont_kw ==# 'throws' |
| 90 | let theIndent = theIndent + &sw |
| 91 | endif |
| 92 | endif |
| 93 | elseif getline(prev) =~ '^\s*\(throws\|implements\|extends\)\>' |
| 94 | \ && (getline(prev) =~ '{\s*$' |
| 95 | \ || getline(v:lnum) =~ '^\s*{\s*$') |
| 96 | let theIndent = theIndent - &sw |
| 97 | endif |
| 98 | |
| 99 | " When the line starts with a }, try aligning it with the matching {, |
| 100 | " skipping over "throws", "extends" and "implements" clauses. |
| 101 | if getline(v:lnum) =~ '^\s*}\s*\(//.*\|/\*.*\)\=$' |
| 102 | call cursor(v:lnum, 1) |
| 103 | silent normal % |
| 104 | let lnum = line('.') |
| 105 | if lnum < v:lnum |
| 106 | while lnum > 1 |
| 107 | let next_lnum = SkipJavaBlanksAndComments(lnum - 1) |
| 108 | if getline(lnum) !~ '^\s*\(throws\|extends\|implements\)\>' |
| 109 | \ && getline(next_lnum) !~ ',\s*$' |
| 110 | break |
| 111 | endif |
| 112 | let lnum = prevnonblank(next_lnum) |
| 113 | endwhile |
| 114 | return indent(lnum) |
| 115 | endif |
| 116 | endif |
| 117 | |
| 118 | " Below a line starting with "}" never indent more. Needed for a method |
| 119 | " below a method with an indented "throws" clause. |
| 120 | let lnum = SkipJavaBlanksAndComments(v:lnum - 1) |
| 121 | if getline(lnum) =~ '^\s*}\s*\(//.*\|/\*.*\)\=$' && indent(lnum) < theIndent |
| 122 | let theIndent = indent(lnum) |
| 123 | endif |
| 124 | |
| 125 | return theIndent |
| 126 | endfunction |
| 127 | |
| 128 | " vi: sw=2 et |