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648
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1 " VHDL indent ('93 syntax)
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646
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2 " Language: VHDL
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3 " Maintainer: Gerald Lai <laigera+vim?gmail.com>
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667
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4 " Version: 1.34
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5 " Last Change: 2006 Feb 11
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648
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6 " URL: http://www.vim.org/scripts/script.php?script_id=1450
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646
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7
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8 " only load this indent file when no other was loaded
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9 if exists("b:did_indent")
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10 finish
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11 endif
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12 let b:did_indent = 1
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13
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14 " setup indent options for local VHDL buffer
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15 setlocal indentexpr=GetVHDLindent()
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16 setlocal indentkeys=!^F,o,O,e,0(,0)
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17 setlocal indentkeys+==~if,=~then,=~elsif,=~else
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18 setlocal indentkeys+==~begin,=~is,=~select,=~--
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19
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667
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20 " count repeat
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21 function! <SID>CountWrapper(cmd)
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22 let i = v:count1
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23 if a:cmd[0] == ":"
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24 while i > 0
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25 execute a:cmd
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26 let i = i - 1
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27 endwhile
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28 else
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29 execute "normal! gv\<Esc>"
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30 execute "normal ".i.a:cmd
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31 let curcol = col(".")
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32 let curline = line(".")
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33 normal! gv
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34 call cursor(curline, curcol)
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35 endif
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36 endfunction
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37
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38 " explore motion
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646
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39 " keywords: "architecture", "block", "configuration", "component", "entity", "function", "package", "procedure", "process", "record", "units"
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40 let b:vhdl_explore = '\%(architecture\|block\|configuration\|component\|entity\|function\|package\|procedure\|process\|record\|units\)'
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667
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41 noremap <buffer><silent>[[ :<C-u>cal <SID>CountWrapper(':cal search("\\%(--.*\\)\\@<!\\%(\\<end\\s\\+\\)\\@<!\\<".b:vhdl_explore."\\>\\c\\<Bar>\\%^","bW")')<CR>
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42 noremap <buffer><silent>]] :<C-u>cal <SID>CountWrapper(':cal search("\\%(--.*\\)\\@<!\\%(\\<end\\s\\+\\)\\@<!\\<".b:vhdl_explore."\\>\\c\\<Bar>\\%$","W")')<CR>
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43 noremap <buffer><silent>[] :<C-u>cal <SID>CountWrapper(':cal search("\\%(--.*\\)\\@<!\\<end\\s\\+".b:vhdl_explore."\\>\\c\\<Bar>\\%^","bW")')<CR>
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44 noremap <buffer><silent>][ :<C-u>cal <SID>CountWrapper(':cal search("\\%(--.*\\)\\@<!\\<end\\s\\+".b:vhdl_explore."\\>\\c\\<Bar>\\%$","W")')<CR>
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45 vnoremap <buffer><silent>[[ :<C-u>cal <SID>CountWrapper('[[')<CR>
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46 vnoremap <buffer><silent>]] :<C-u>cal <SID>CountWrapper(']]')<CR>
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47 vnoremap <buffer><silent>[] :<C-u>cal <SID>CountWrapper('[]')<CR>
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48 vnoremap <buffer><silent>][ :<C-u>cal <SID>CountWrapper('][')<CR>
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646
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49
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50 " constants
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51 " not a comment
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52 let s:NC = '\%(--.*\)\@<!'
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53 " end of string
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54 let s:ES = '\s*\%(--.*\)\=$'
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55 " no "end" keyword in front
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56 let s:NE = '\%(\<end\s\+\)\@<!'
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57
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58 " for matchit plugin
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59 if exists("loaded_matchit")
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60 let b:match_ignorecase = 1
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61 let b:match_words =
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62 \ s:NE.'\<if\>:\<elsif\>:\<else\>:\<end\s\+if\>,'.
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63 \ s:NE.'\<case\>:\<when\>:\<end\s\+case\>,'.
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64 \ s:NE.'\<loop\>:\<end\s\+loop\>,'.
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65 \ s:NE.'\<for\>:\<end\s\+for\>,'.
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66 \ s:NE.'\<generate\>:\<end\s\+generate\>,'.
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67 \ s:NE.'\<record\>:\<end\s\+record\>,'.
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68 \ s:NE.'\<units\>:\<end\s\+units\>,'.
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69 \ s:NE.'\<process\>:\<end\s\+process\>,'.
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70 \ s:NE.'\<block\>:\<end\s\+block\>,'.
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71 \ s:NE.'\<function\>:\<end\s\+function\>,'.
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72 \ s:NE.'\<entity\>:\<end\s\+entity\>,'.
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73 \ s:NE.'\<component\>:\<end\s\+component\>,'.
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74 \ s:NE.'\<architecture\>:\<end\s\+architecture\>,'.
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75 \ s:NE.'\<package\>:\<end\s\+package\>,'.
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76 \ s:NE.'\<procedure\>:\<end\s\+procedure\>,'.
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77 \ s:NE.'\<configuration\>:\<end\s\+configuration\>'
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78 endif
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79
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80 " only define indent function once
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81 if exists("*GetVHDLindent")
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82 finish
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83 endif
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84
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85 function GetVHDLindent()
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86 " store current line & string
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87 let curn = v:lnum
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88 let curs = getline(curn)
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89
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90 " find previous line that is not a comment
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91 let prevn = prevnonblank(curn - 1)
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92 let prevs = getline(prevn)
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93 while prevn > 0 && prevs =~ '^\s*--'
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94 let prevn = prevnonblank(prevn - 1)
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95 let prevs = getline(prevn)
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96 endwhile
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97
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98 " default indent starts as previous non-comment line's indent
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99 let ind = prevn > 0 ? indent(prevn) : 0
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100 " backup default
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101 let ind2 = ind
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102
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648
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103 " indent: special; kill string so it would not affect other filters
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104 " keywords: "report" + string
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105 " where: anywhere in current or previous line
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106 let s0 = s:NC.'\<report\>\s*".*"'
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107 if curs =~? s0
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108 let curs = ""
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109 endif
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110 if prevs =~? s0
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111 let prevs = ""
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112 endif
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113
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646
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114 " indent: previous line's comment position, otherwise follow next non-comment line if possible
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115 " keyword: "--"
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116 " where: start of current line
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117 if curs =~ '^\s*--'
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118 let pn = curn - 1
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119 let ps = getline(pn)
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120 if ps =~ '--'
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121 return stridx(ps, '--')
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122 else
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123 " find nextnonblank line that is not a comment
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124 let nn = nextnonblank(curn + 1)
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125 let ns = getline(nn)
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126 while nn > 0 && ns =~ '^\s*--'
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127 let nn = nextnonblank(nn + 1)
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128 let ns = getline(nn)
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129 endwhile
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130 let n = indent(nn)
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131 return n != -1 ? n : ind
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132 endif
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133 endif
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134
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135 " ****************************************************************************************
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136 " indent: align generic variables & port names
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137 " keywords: "generic", "map", "port" + "(", provided current line is part of mapping
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138 " where: anywhere in previous 2 lines
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139 " find following previous non-comment line
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140 let pn = prevnonblank(prevn - 1)
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141 let ps = getline(pn)
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142 while pn > 0 && ps =~ '^\s*--'
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143 let pn = prevnonblank(pn - 1)
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144 let ps = getline(pn)
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145 endwhile
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649
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146 if (curs =~ '^\s*)' || curs =~? '^\s*\%(\<\%(generic\|map\|port\)\>.*\)\@<!\S\+\s*\%(=>\s*\S\+\|:[^=]\@=\s*\%(\%(in\|out\|inout\|buffer\|linkage\)\>\|\w\+\s\+:=\)\)') && (prevs =~? s:NC.'\<\%(generic\|map\|port\)\s*(\%(\s*\w\)\=' || (ps =~? s:NC.'\<\%(generic\|map\|port\)'.s:ES && prevs =~ '^\s*('))
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646
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147 " align closing ")" with opening "("
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148 if curs =~ '^\s*)'
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149 return stridx(prevs, '(')
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150 endif
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151 let m = matchend(prevs, '(\s*\ze\w')
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152 if m != -1
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153 return m
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154 else
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155 return stridx(prevs, '(') + &sw
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156 endif
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157 endif
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158
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159 " indent: align conditional/select statement
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648
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160 " keywords: variable + "<=" without ";" ending
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161 " where: start of previous line
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162 if prevs =~? '^\s*\S\+\s*<=[^;]*'.s:ES
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646
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163 return matchend(prevs, '<=\s*\ze.')
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164 endif
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165
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166 " indent: backtrace previous non-comment lines for next smaller or equal size indent
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167 " keywords: "end" + "record", "units"
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168 " where: start of previous line
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169 " keyword: ")"
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170 " where: start of previous line
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171 " keyword: without "<=" + ";" ending
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172 " where: anywhere in previous line
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173 " keyword: "=>" + ")" ending, provided current line does not begin with ")"
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174 " where: anywhere in previous line
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175 " _note_: indent allowed to leave this filter
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176 let m = 0
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177 if prevs =~? '^\s*end\s\+\%(record\|units\)\>'
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178 let m = 3
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179 elseif prevs =~ '^\s*)'
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180 let m = 1
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181 elseif prevs =~ s:NC.'\%(<=.*\)\@<!;'.s:ES || (curs !~ '^\s*)' && prevs =~ s:NC.'=>.*'.s:NC.')'.s:ES)
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182 let m = 2
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183 endif
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184
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185 if m > 0
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186 let pn = prevnonblank(prevn - 1)
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187 let ps = getline(pn)
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188 while pn > 0
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189 let t = indent(pn)
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190 if ps !~ '^\s*--' && t < ind
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191 " make sure one of these is true
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648
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192 " keywords: variable + "<=" without ";" ending
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193 " where: start of previous non-comment line
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646
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194 " keywords: "generic", "map", "port"
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195 " where: anywhere in previous non-comment line
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196 " keyword: "("
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197 " where: start of previous non-comment line
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648
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198 if m < 3 && ps !~? '^\s*\S\+\s*<=[^;]*'.s:ES
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646
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199 if ps =~? s:NC.'\<\%(generic\|map\|port\)\>' || ps =~ '^\s*('
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200 let ind = t
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201 endif
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202 break
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203 endif
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204 let ind = t
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205 if m > 1
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206 " find following previous non-comment line
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207 let ppn = prevnonblank(pn - 1)
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208 let pps = getline(ppn)
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209 while ppn > 0 && pps =~ '^\s*--'
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210 let ppn = prevnonblank(ppn - 1)
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211 let pps = getline(ppn)
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212 endwhile
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213 " indent: follow
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214 " keyword: "select"
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215 " where: end of following previous non-comment line
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216 " keyword: "type"
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217 " where: start of following previous non-comment line
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218 if m == 2
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219 let s1 = s:NC.'\<select'.s:ES
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220 if ps !~? s1 && pps =~? s1
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221 let ind = indent(ppn)
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222 endif
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223 elseif m == 3
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224 let s1 = '^\s*type\>'
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225 if ps !~? s1 && pps =~? s1
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226 let ind = indent(ppn)
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227 endif
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228 endif
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229 endif
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230 break
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231 endif
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232 let pn = prevnonblank(pn - 1)
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233 let ps = getline(pn)
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234 endwhile
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235 endif
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236
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237 " indent: follow indent of previous opening statement, otherwise -sw
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238 " keyword: "begin"
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239 " where: anywhere in current line
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240 if curs =~? s:NC.'\<begin\>'
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241 let ind = ind - &sw
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242 " find previous opening statement of
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243 " keywords: "architecture", "block", "entity", "function", "generate", "procedure", "process"
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244 let s2 = s:NC.s:NE.'\<\%(architecture\|block\|entity\|function\|generate\|procedure\|process\)\>'
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245 if curs !~? s2.'.*'.s:NC.'\<begin\>.*'.s:ES && prevs =~? s2
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246 let ind = ind + &sw
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247 endif
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248 return ind
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249 endif
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250
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251 " indent: +sw if previous line is previous opening statement
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252 " keywords: "record", "units"
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253 " where: anywhere in current line
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254 if curs =~? s:NC.s:NE.'\<\%(record\|units\)\>'
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255 " find previous opening statement of
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256 " keyword: "type"
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257 let s3 = s:NC.s:NE.'\<type\>'
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258 if curs !~? s3.'.*'.s:NC.'\<\%(record\|units\)\>.*'.s:ES && prevs =~? s3
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259 let ind = ind + &sw
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260 endif
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261 return ind
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262 endif
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263
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264 " ****************************************************************************************
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265 " indent: 0
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266 " keywords: "architecture", "configuration", "entity", "library", "package"
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267 " where: start of current line
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268 if curs =~? '^\s*\%(architecture\|configuration\|entity\|library\|package\)\>'
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269 return 0
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270 endif
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271
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648
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272 " indent: maintain indent of previous opening statement
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646
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273 " keyword: "is"
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274 " where: start of current line
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275 " find previous opening statement of
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276 " keywords: "architecture", "block", "configuration", "entity", "function", "package", "procedure", "process", "type"
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277 if curs =~? '^\s*\<is\>' && prevs =~? s:NC.s:NE.'\<\%(architecture\|block\|configuration\|entity\|function\|package\|procedure\|process\|type\)\>'
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648
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278 return ind2
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646
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279 endif
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280
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648
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281 " indent: maintain indent of previous opening statement
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646
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282 " keyword: "then"
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283 " where: start of current line
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284 " find previous opening statement of
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285 " keywords: "elsif", "if"
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649
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286 if curs =~? '^\s*\<then\>' && prevs =~? s:NC.'\%(\<elsif\>\|'.s:NE.'\<if\>\)'
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648
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287 return ind2
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646
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288 endif
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289
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648
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290 " indent: maintain indent of previous opening statement
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646
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291 " keyword: "generate"
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292 " where: start of current line
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293 " find previous opening statement of
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294 " keywords: "for", "if"
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649
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295 if curs =~? '^\s*\<generate\>' && prevs =~? s:NC.s:NE.'\%(\%(\<wait\s\+\)\@<!\<for\>\|\<if\>\)'
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648
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296 return ind2
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646
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297 endif
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298
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299 " indent: +sw
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649
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300 " keywords: "begin", "block", "loop", "process", "record", "units"
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301 " removed: "case", "elsif", "if", "while"
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646
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302 " where: anywhere in previous line
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649
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303 if prevs =~? s:NC.'\%(\<begin\>\|'.s:NE.'\<\%(block\|loop\|process\|record\|units\)\>\)'
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646
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304 return ind + &sw
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305 endif
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306
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307 " indent: +sw
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648
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308 " keywords: "architecture", "component", "configuration", "entity", "for", "package"
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309 " removed: "when", "with"
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646
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310 " where: start of previous line
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648
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311 if prevs =~? '^\s*\%(architecture\|component\|configuration\|entity\|for\|package\)\>'
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646
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312 return ind + &sw
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313 endif
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314
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315 " indent: +sw
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316 " keyword: "generate", "is", "select", "=>"
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317 " where: end of previous line
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649
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318 if prevs =~? s:NC.'\%(\%('.s:NE.'\<generate\|\<is\|\<select\)\|=>\)'.s:ES
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646
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319 return ind + &sw
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320 endif
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321
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322 " indent: +sw
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649
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323 " keyword: "else"
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324 " where: start of previous line
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325 " keyword: "then"
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646
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326 " where: end of previous line
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327 " _note_: indent allowed to leave this filter
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649
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328 if prevs =~? '^\s*else\>' || prevs =~? s:NC.'\<then'.s:ES
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646
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329 let ind = ind + &sw
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330 endif
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331
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332 " ****************************************************************************************
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649
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333 " indent: -sw
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334 " keywords: "when", provided previous line does not begin with "when"
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646
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335 " where: start of current line
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336 let s4 = '^\s*when\>'
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649
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337 if curs =~? s4
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338 if prevs !~? s4
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339 return ind - &sw
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340 else
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341 return ind2
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342 endif
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343 endif
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344
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345 " indent: -sw
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346 " keywords: "else", "elsif", provided previous line does not contain "then"
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347 " where: start of current line
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348 if curs =~? '^\s*\%(else\|elsif\)\>'
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349 if prevs !~? s:NC.'\<then\>'
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350 return ind - &sw
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351 else
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352 return ind2
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353 endif
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646
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354 endif
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355
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356 " indent: -sw
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649
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357 " keywords: "end" + "if", provided previous line does not begin with "else", not contain "then"
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646
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358 " where: start of current line
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649
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359 if curs =~? '^\s*end\s\+if\>'
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360 if prevs !~? '^\s*else\>' && prevs !~? s:NC.'\<then\>'
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361 return ind - &sw
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362 else
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363 return ind2
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364 endif
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646
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365 endif
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366
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367 " indent: -sw
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649
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368 " keywords: "end" + "function", "procedure", provided previous line does not contain "begin"
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646
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369 " where: start of current line
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649
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370 if curs =~? '^\s*end\s\+\%(function\|procedure\)\>'
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371 if prevs !~? s:NC.'\<begin\>'
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372 return ind - &sw
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373 else
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374 return ind2
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375 endif
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376 endif
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377
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378 " indent: -sw
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379 " keywords: "end" + "block", "for", "generate", "loop", "process", "record", "units"
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646
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380 " where: start of current line
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649
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381 if curs =~? '^\s*end\s\+\%(block\|for\|generate\|loop\|process\|record\|units\)\>'
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646
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382 return ind - &sw
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383 endif
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384
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648
|
385 " indent: backtrace previous non-comment lines
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386 " keyword: "end" + "case", "component"
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646
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387 " where: start of current line
|
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648
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388 let m = 0
|
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646
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389 if curs =~? '^\s*end\s\+case\>'
|
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648
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390 let m = 1
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391 elseif curs =~? '^\s*end\s\+component\>'
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|
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392 let m = 2
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|
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393 endif
|
|
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394
|
|
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395 if m > 0
|
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646
|
396 " find following previous non-comment line
|
|
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397 let pn = prevn
|
|
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398 let ps = getline(pn)
|
|
|
399 while pn > 0
|
|
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400 if ps !~ '^\s*--'
|
|
648
|
401 "indent: -2sw
|
|
|
402 "keywords: "end" + "case"
|
|
|
403 "where: start of previous non-comment line
|
|
|
404 "indent: -sw
|
|
|
405 "keywords: "when"
|
|
|
406 "where: start of previous non-comment line
|
|
|
407 "indent: follow
|
|
|
408 "keywords: "case"
|
|
|
409 "where: start of previous non-comment line
|
|
|
410 if m == 1
|
|
|
411 if ps =~? '^\s*end\s\+case\>'
|
|
|
412 return indent(pn) - 2 * &sw
|
|
|
413 elseif ps =~? '^\s*when\>'
|
|
|
414 return indent(pn) - &sw
|
|
|
415 elseif ps =~? '^\s*case\>'
|
|
|
416 return indent(pn)
|
|
|
417 endif
|
|
|
418 "indent: follow
|
|
|
419 "keyword: "component"
|
|
|
420 "where: anywhere in previous non-comment line
|
|
|
421 elseif m == 2
|
|
|
422 if ps =~? s:NC.s:NE.'\<component\>'
|
|
|
423 return indent(pn)
|
|
|
424 endif
|
|
646
|
425 endif
|
|
|
426 endif
|
|
|
427 let pn = prevnonblank(pn - 1)
|
|
|
428 let ps = getline(pn)
|
|
|
429 endwhile
|
|
648
|
430 return ind - &sw
|
|
646
|
431 endif
|
|
|
432
|
|
649
|
433 " indent: -sw
|
|
|
434 " keyword: ")"
|
|
|
435 " where: start of current line
|
|
|
436 if curs =~ '^\s*)'
|
|
|
437 return ind - &sw
|
|
|
438 endif
|
|
|
439
|
|
646
|
440 " indent: 0
|
|
|
441 " keywords: "end" + "architecture", "configuration", "entity", "package"
|
|
|
442 " where: start of current line
|
|
|
443 if curs =~? '^\s*end\s\+\%(architecture\|configuration\|entity\|package\)\>'
|
|
|
444 return 0
|
|
|
445 endif
|
|
|
446
|
|
|
447 " indent: -sw
|
|
|
448 " keywords: "end" + identifier
|
|
|
449 " where: start of current line
|
|
|
450 if curs =~? '^\s*end\s\+\w\+\>'
|
|
|
451 return ind - &sw
|
|
|
452 endif
|
|
|
453
|
|
|
454 " ****************************************************************************************
|
|
648
|
455 " indent: maintain indent of previous opening statement
|
|
646
|
456 " keywords: without "generic", "map", "port" + ":" but not ":=" + "in", "out", "inout", "buffer", "linkage", variable & ":="
|
|
649
|
457 " where: start of current line
|
|
|
458 if curs =~? '^\s*\%(\<\%(generic\|map\|port\)\>.*\)\@<!\S\+\s*:[^=]\@=\s*\%(\%(in\|out\|inout\|buffer\|linkage\)\>\|\w\+\s\+:=\)'
|
|
646
|
459 return ind2
|
|
|
460 endif
|
|
|
461
|
|
|
462 " return leftover filtered indent
|
|
|
463 return ind
|
|
|
464 endfunction
|
