annotate runtime/indent/verilog.vim @ 7505:d71bf2753073

Added tag v7.4.1054 for changeset 013f285f31a64b63725b6cf29059878051b0f8ae
author Christian Brabandt <cb@256bit.org>
date Tue, 05 Jan 2016 22:15:05 +0100
parents 8b8ef1fed009
children 1218c5353e2b
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 " Language: Verilog HDL
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2 " Maintainer: Chih-Tsun Huang <cthuang@larc.ee.nthu.edu.tw>
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3 " Last Change: 2011 Dec 10 by Thilo Six
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4 " URL: http://larc.ee.nthu.edu.tw/~cthuang/vim/indent/verilog.vim
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5 "
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6 " Credits:
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7 " Suggestions for improvement, bug reports by
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8 " Leo Butlero <lbutler@brocade.com>
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9 "
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10 " Buffer Variables:
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11 " b:verilog_indent_modules : indenting after the declaration
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12 " of module blocks
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13 " b:verilog_indent_width : indenting width
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14 " b:verilog_indent_verbose : verbose to each indenting
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15 "
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16
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17 " Only load this indent file when no other was loaded.
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18 if exists("b:did_indent")
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19 finish
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20 endif
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21 let b:did_indent = 1
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22
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23 setlocal indentexpr=GetVerilogIndent()
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24 setlocal indentkeys=!^F,o,O,0),=begin,=end,=join,=endcase
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25 setlocal indentkeys+==endmodule,=endfunction,=endtask,=endspecify
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26 setlocal indentkeys+==`else,=`endif
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27
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28 " Only define the function once.
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29 if exists("*GetVerilogIndent")
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30 finish
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31 endif
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32
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33 let s:cpo_save = &cpo
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34 set cpo&vim
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35
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36 function GetVerilogIndent()
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37
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38 if exists('b:verilog_indent_width')
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39 let offset = b:verilog_indent_width
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40 else
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41 let offset = &sw
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42 endif
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43 if exists('b:verilog_indent_modules')
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44 let indent_modules = offset
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45 else
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46 let indent_modules = 0
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47 endif
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48
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49 " Find a non-blank line above the current line.
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50 let lnum = prevnonblank(v:lnum - 1)
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51
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52 " At the start of the file use zero indent.
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53 if lnum == 0
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54 return 0
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55 endif
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56
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57 let lnum2 = prevnonblank(lnum - 1)
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58 let curr_line = getline(v:lnum)
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59 let last_line = getline(lnum)
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60 let last_line2 = getline(lnum2)
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61 let ind = indent(lnum)
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62 let ind2 = indent(lnum - 1)
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63 let offset_comment1 = 1
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64 " Define the condition of an open statement
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65 " Exclude the match of //, /* or */
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66 let vlog_openstat = '\(\<or\>\|\([*/]\)\@<![*(,{><+-/%^&|!=?:]\([*/]\)\@!\)'
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67 " Define the condition when the statement ends with a one-line comment
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68 let vlog_comment = '\(//.*\|/\*.*\*/\s*\)'
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69 if exists('b:verilog_indent_verbose')
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70 let vverb_str = 'INDENT VERBOSE:'
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71 let vverb = 1
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72 else
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73 let vverb = 0
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74 endif
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75
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76 " Indent accoding to last line
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77 " End of multiple-line comment
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78 if last_line =~ '\*/\s*$' && last_line !~ '/\*.\{-}\*/'
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79 let ind = ind - offset_comment1
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80 if vverb
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81 echo vverb_str "De-indent after a multiple-line comment."
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82 endif
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83
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84 " Indent after if/else/for/case/always/initial/specify/fork blocks
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85 elseif last_line =~ '`\@<!\<\(if\|else\)\>' ||
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86 \ last_line =~ '^\s*\<\(for\|case\%[[zx]]\)\>' ||
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87 \ last_line =~ '^\s*\<\(always\|initial\)\>' ||
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88 \ last_line =~ '^\s*\<\(specify\|fork\)\>'
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89 if last_line !~ '\(;\|\<end\>\)\s*' . vlog_comment . '*$' ||
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90 \ last_line =~ '\(//\|/\*\).*\(;\|\<end\>\)\s*' . vlog_comment . '*$'
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91 let ind = ind + offset
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92 if vverb | echo vverb_str "Indent after a block statement." | endif
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93 endif
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94 " Indent after function/task blocks
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95 elseif last_line =~ '^\s*\<\(function\|task\)\>'
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96 if last_line !~ '\<end\>\s*' . vlog_comment . '*$' ||
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97 \ last_line =~ '\(//\|/\*\).*\(;\|\<end\>\)\s*' . vlog_comment . '*$'
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98 let ind = ind + offset
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99 if vverb
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100 echo vverb_str "Indent after function/task block statement."
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101 endif
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102 endif
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103
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104 " Indent after module/function/task/specify/fork blocks
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105 elseif last_line =~ '^\s*\<module\>'
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106 let ind = ind + indent_modules
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107 if vverb && indent_modules
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108 echo vverb_str "Indent after module statement."
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109 endif
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110 if last_line =~ '[(,]\s*' . vlog_comment . '*$' &&
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111 \ last_line !~ '\(//\|/\*\).*[(,]\s*' . vlog_comment . '*$'
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112 let ind = ind + offset
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113 if vverb
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114 echo vverb_str "Indent after a multiple-line module statement."
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115 endif
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116 endif
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117
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118 " Indent after a 'begin' statement
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119 elseif last_line =~ '\(\<begin\>\)\(\s*:\s*\w\+\)*' . vlog_comment . '*$' &&
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120 \ last_line !~ '\(//\|/\*\).*\(\<begin\>\)' &&
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121 \ ( last_line2 !~ vlog_openstat . '\s*' . vlog_comment . '*$' ||
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122 \ last_line2 =~ '^\s*[^=!]\+\s*:\s*' . vlog_comment . '*$' )
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123 let ind = ind + offset
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124 if vverb | echo vverb_str "Indent after begin statement." | endif
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125
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126 " De-indent for the end of one-line block
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127 elseif ( last_line !~ '\<begin\>' ||
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128 \ last_line =~ '\(//\|/\*\).*\<begin\>' ) &&
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129 \ last_line2 =~ '\<\(`\@<!if\|`\@<!else\|for\|always\|initial\)\>.*' .
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130 \ vlog_comment . '*$' &&
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131 \ last_line2 !~
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132 \ '\(//\|/\*\).*\<\(`\@<!if\|`\@<!else\|for\|always\|initial\)\>' &&
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133 \ last_line2 !~ vlog_openstat . '\s*' . vlog_comment . '*$' &&
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134 \ ( last_line2 !~ '\<begin\>' ||
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135 \ last_line2 =~ '\(//\|/\*\).*\<begin\>' )
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136 let ind = ind - offset
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137 if vverb
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138 echo vverb_str "De-indent after the end of one-line statement."
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139 endif
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140
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141 " Multiple-line statement (including case statement)
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142 " Open statement
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143 " Ident the first open line
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144 elseif last_line =~ vlog_openstat . '\s*' . vlog_comment . '*$' &&
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145 \ last_line !~ '\(//\|/\*\).*' . vlog_openstat . '\s*$' &&
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146 \ last_line2 !~ vlog_openstat . '\s*' . vlog_comment . '*$'
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147 let ind = ind + offset
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148 if vverb | echo vverb_str "Indent after an open statement." | endif
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149
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150 " Close statement
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151 " De-indent for an optional close parenthesis and a semicolon, and only
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152 " if there exists precedent non-whitespace char
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153 elseif last_line =~ ')*\s*;\s*' . vlog_comment . '*$' &&
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154 \ last_line !~ '^\s*)*\s*;\s*' . vlog_comment . '*$' &&
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155 \ last_line !~ '\(//\|/\*\).*\S)*\s*;\s*' . vlog_comment . '*$' &&
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156 \ ( last_line2 =~ vlog_openstat . '\s*' . vlog_comment . '*$' &&
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157 \ last_line2 !~ ';\s*//.*$') &&
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158 \ last_line2 !~ '^\s*' . vlog_comment . '$'
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159 let ind = ind - offset
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160 if vverb | echo vverb_str "De-indent after a close statement." | endif
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161
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162 " `ifdef and `else
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163 elseif last_line =~ '^\s*`\<\(ifdef\|else\)\>'
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164 let ind = ind + offset
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165 if vverb
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166 echo vverb_str "Indent after a `ifdef or `else statement."
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167 endif
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168
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169 endif
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170
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171 " Re-indent current line
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172
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173 " De-indent on the end of the block
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174 " join/end/endcase/endfunction/endtask/endspecify
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175 if curr_line =~ '^\s*\<\(join\|end\|endcase\)\>' ||
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176 \ curr_line =~ '^\s*\<\(endfunction\|endtask\|endspecify\)\>'
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177 let ind = ind - offset
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178 if vverb | echo vverb_str "De-indent the end of a block." | endif
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179 elseif curr_line =~ '^\s*\<endmodule\>'
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180 let ind = ind - indent_modules
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181 if vverb && indent_modules
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182 echo vverb_str "De-indent the end of a module."
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183 endif
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184
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185 " De-indent on a stand-alone 'begin'
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186 elseif curr_line =~ '^\s*\<begin\>'
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187 if last_line !~ '^\s*\<\(function\|task\|specify\|module\)\>' &&
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188 \ last_line !~ '^\s*\()*\s*;\|)\+\)\s*' . vlog_comment . '*$' &&
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189 \ ( last_line =~
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190 \ '\<\(`\@<!if\|`\@<!else\|for\|case\%[[zx]]\|always\|initial\)\>' ||
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191 \ last_line =~ ')\s*' . vlog_comment . '*$' ||
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192 \ last_line =~ vlog_openstat . '\s*' . vlog_comment . '*$' )
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193 let ind = ind - offset
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194 if vverb
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195 echo vverb_str "De-indent a stand alone begin statement."
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196 endif
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197 endif
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198
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199 " De-indent after the end of multiple-line statement
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200 elseif curr_line =~ '^\s*)' &&
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201 \ ( last_line =~ vlog_openstat . '\s*' . vlog_comment . '*$' ||
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202 \ last_line !~ vlog_openstat . '\s*' . vlog_comment . '*$' &&
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203 \ last_line2 =~ vlog_openstat . '\s*' . vlog_comment . '*$' )
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204 let ind = ind - offset
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205 if vverb
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206 echo vverb_str "De-indent the end of a multiple statement."
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207 endif
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208
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209 " De-indent `else and `endif
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210 elseif curr_line =~ '^\s*`\<\(else\|endif\)\>'
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211 let ind = ind - offset
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212 if vverb | echo vverb_str "De-indent `else and `endif statement." | endif
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213
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214 endif
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215
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216 " Return the indention
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217 return ind
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218 endfunction
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219
3224
8b8ef1fed009 Update runtime files.
Bram Moolenaar <bram@vim.org>
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220 let &cpo = s:cpo_save
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221 unlet s:cpo_save
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222
7
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223 " vim:sw=2