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systemverilog.vim
" Vim indent file " Language: SystemVerilog " Maintainer: kocha <kocha.lsifrontend@gmail.com> " Last Change: 12-Aug-2013. " Only load this indent file when no other was loaded. if exists("b:did_indent") finish endif let b:did_indent = 1 setlocal indentexpr=SystemVerilogIndent() setlocal indentkeys=!^F,o,O,0),0},=begin,=end,=join,=endcase,=join_any,=join_none setlocal indentkeys+==endmodule,=endfunction,=endtask,=endspecify setlocal indentkeys+==endclass,=endpackage,=endsequence,=endclocking setlocal indentkeys+==endinterface,=endgroup,=endprogram,=endproperty,=endchecker setlocal indentkeys+==`else,=`endif " Only define the function once. if exists("*SystemVerilogIndent") finish endif let s:cpo_save = &cpo set cpo&vim function SystemVerilogIndent() if exists('b:systemverilog_indent_width') let offset = b:systemverilog_indent_width else let offset = shiftwidth() endif if exists('b:systemverilog_indent_modules') let indent_modules = offset else let indent_modules = 0 endif " Find a non-blank line above the current line. let lnum = prevnonblank(v:lnum - 1) " At the start of the file use zero indent. if lnum == 0 return 0 endif let lnum2 = prevnonblank(lnum - 1) let curr_line = getline(v:lnum) let last_line = getline(lnum) let last_line2 = getline(lnum2) let ind = indent(lnum) let ind2 = indent(lnum - 1) let offset_comment1 = 1 " Define the condition of an open statement " Exclude the match of //, /* or */ let sv_openstat = '\(\<or\>\|\([*/]\)\@<![*(,{><+-/%^&|!=?:]\([*/]\)\@!\)' " Define the condition when the statement ends with a one-line comment let sv_comment = '\(//.*\|/\*.*\*/\s*\)' if exists('b:verilog_indent_verbose') let vverb_str = 'INDENT VERBOSE:' let vverb = 1 else let vverb = 0 endif " Indent accoding to last line " End of multiple-line comment if last_line =~ '\*/\s*$' && last_line !~ '/\*.\{-}\*/' let ind = ind - offset_comment1 if vverb echo vverb_str "De-indent after a multiple-line comment." endif " Indent after if/else/for/case/always/initial/specify/fork blocks elseif last_line =~ '`\@<!\<\(if\|else\)\>' || \ last_line =~ '^\s*\<\(for\|case\%[[zx]]\|do\|foreach\|randcase\)\>' || \ last_line =~ '^\s*\<\(always\|always_comb\|always_ff\|always_latch\)\>' || \ last_line =~ '^\s*\<\(initial\|specify\|fork\|final\)\>' if last_line !~ '\(;\|\<end\>\)\s*' . sv_comment . '*$' || \ last_line =~ '\(//\|/\*\).*\(;\|\<end\>\)\s*' . sv_comment . '*$' let ind = ind + offset if vverb | echo vverb_str "Indent after a block statement." | endif endif " Indent after function/task/class/package/sequence/clocking/ " interface/covergroup/property/checkerprogram blocks elseif last_line =~ '^\s*\<\(function\|task\|class\|package\)\>' || \ last_line =~ '^\s*\<\(sequence\|clocking\|interface\)\>' || \ last_line =~ '^\s*\(\w\+\s*:\)\=\s*\<covergroup\>' || \ last_line =~ '^\s*\<\(property\|checker\|program\)\>' if last_line !~ '\<end\>\s*' . sv_comment . '*$' || \ last_line =~ '\(//\|/\*\).*\(;\|\<end\>\)\s*' . sv_comment . '*$' let ind = ind + offset if vverb echo vverb_str "Indent after function/task/class block statement." endif endif " Indent after module/function/task/specify/fork blocks elseif last_line =~ '^\s*\(\<extern\>\s*\)\=\<module\>' let ind = ind + indent_modules if vverb && indent_modules echo vverb_str "Indent after module statement." endif if last_line =~ '[(,]\s*' . sv_comment . '*$' && \ last_line !~ '\(//\|/\*\).*[(,]\s*' . sv_comment . '*$' let ind = ind + offset if vverb echo vverb_str "Indent after a multiple-line module statement." endif endif " Indent after a 'begin' statement elseif last_line =~ '\(\<begin\>\)\(\s*:\s*\w\+\)*' . sv_comment . '*$' && \ last_line !~ '\(//\|/\*\).*\(\<begin\>\)' && \ ( last_line2 !~ sv_openstat . '\s*' . sv_comment . '*$' || \ last_line2 =~ '^\s*[^=!]\+\s*:\s*' . sv_comment . '*$' ) let ind = ind + offset if vverb | echo vverb_str "Indent after begin statement." | endif " Indent after a '{' or a '(' elseif last_line =~ '[{(]' . sv_comment . '*$' && \ last_line !~ '\(//\|/\*\).*[{(]' && \ ( last_line2 !~ sv_openstat . '\s*' . sv_comment . '*$' || \ last_line2 =~ '^\s*[^=!]\+\s*:\s*' . sv_comment . '*$' ) let ind = ind + offset if vverb | echo vverb_str "Indent after begin statement." | endif " De-indent for the end of one-line block elseif ( last_line !~ '\<begin\>' || \ last_line =~ '\(//\|/\*\).*\<begin\>' ) && \ last_line2 =~ '\<\(`\@<!if\|`\@<!else\|for\|always\|initial\|do\|foreach\|final\)\>.*' . \ sv_comment . '*$' && \ last_line2 !~ '\(//\|/\*\).*\<\(`\@<!if\|`\@<!else\|for\|always\|initial\|do\|foreach\|final\)\>' && \ last_line2 !~ sv_openstat . '\s*' . sv_comment . '*$' && \ ( last_line2 !~ '\<begin\>' || \ last_line2 =~ '\(//\|/\*\).*\<begin\>' ) let ind = ind - offset if vverb echo vverb_str "De-indent after the end of one-line statement." endif " Multiple-line statement (including case statement) " Open statement " Ident the first open line elseif last_line =~ sv_openstat . '\s*' . sv_comment . '*$' && \ last_line !~ '\(//\|/\*\).*' . sv_openstat . '\s*$' && \ last_line2 !~ sv_openstat . '\s*' . sv_comment . '*$' let ind = ind + offset if vverb | echo vverb_str "Indent after an open statement." | endif " Close statement " De-indent for an optional close parenthesis and a semicolon, and only " if there exists precedent non-whitespace char elseif last_line =~ ')*\s*;\s*' . sv_comment . '*$' && \ last_line !~ '^\s*)*\s*;\s*' . sv_comment . '*$' && \ last_line !~ '\(//\|/\*\).*\S)*\s*;\s*' . sv_comment . '*$' && \ ( last_line2 =~ sv_openstat . '\s*' . sv_comment . '*$' && \ last_line2 !~ ';\s*//.*$') && \ last_line2 !~ '^\s*' . sv_comment . '$' let ind = ind - offset if vverb | echo vverb_str "De-indent after a close statement." | endif " `ifdef and `else elseif last_line =~ '^\s*`\<\(ifdef\|else\)\>' let ind = ind + offset if vverb echo vverb_str "Indent after a `ifdef or `else statement." endif endif " Re-indent current line " De-indent on the end of the block " join/end/endcase/endfunction/endtask/endspecify if curr_line =~ '^\s*\<\(join\|join_any\|join_none\|\|end\|endcase\|while\)\>' || \ curr_line =~ '^\s*\<\(endfunction\|endtask\|endspecify\|endclass\)\>' || \ curr_line =~ '^\s*\<\(endpackage\|endsequence\|endclocking\|endinterface\)\>' || \ curr_line =~ '^\s*\<\(endgroup\|endproperty\|endchecker\|endprogram\)\>' || \ curr_line =~ '^\s*}' let ind = ind - offset if vverb | echo vverb_str "De-indent the end of a block." | endif elseif curr_line =~ '^\s*\<endmodule\>' let ind = ind - indent_modules if vverb && indent_modules echo vverb_str "De-indent the end of a module." endif " De-indent on a stand-alone 'begin' elseif curr_line =~ '^\s*\<begin\>' if last_line !~ '^\s*\<\(function\|task\|specify\|module\|class\|package\)\>' || \ last_line !~ '^\s*\<\(sequence\|clocking\|interface\|covergroup\)\>' || \ last_line !~ '^\s*\<\(property\|checker\|program\)\>' && \ last_line !~ '^\s*\()*\s*;\|)\+\)\s*' . sv_comment . '*$' && \ ( last_line =~ \ '\<\(`\@<!if\|`\@<!else\|for\|case\%[[zx]]\|always\|initial\|do\|foreach\|randcase\|final\)\>' || \ last_line =~ ')\s*' . sv_comment . '*$' || \ last_line =~ sv_openstat . '\s*' . sv_comment . '*$' ) let ind = ind - offset if vverb echo vverb_str "De-indent a stand alone begin statement." endif endif " De-indent after the end of multiple-line statement elseif curr_line =~ '^\s*)' && \ ( last_line =~ sv_openstat . '\s*' . sv_comment . '*$' || \ last_line !~ sv_openstat . '\s*' . sv_comment . '*$' && \ last_line2 =~ sv_openstat . '\s*' . sv_comment . '*$' ) let ind = ind - offset if vverb echo vverb_str "De-indent the end of a multiple statement." endif " De-indent `else and `endif elseif curr_line =~ '^\s*`\<\(else\|endif\)\>' let ind = ind - offset if vverb | echo vverb_str "De-indent `else and `endif statement." | endif endif " Return the indention return ind endfunction let &cpo = s:cpo_save unlet s:cpo_save " vim:sw=2
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