diff options
Diffstat (limited to '')
| -rw-r--r-- | runtime/indent/systemverilog.vim | 279 |
1 files changed, 279 insertions, 0 deletions
diff --git a/runtime/indent/systemverilog.vim b/runtime/indent/systemverilog.vim new file mode 100644 index 0000000..a5f4d5b --- /dev/null +++ b/runtime/indent/systemverilog.vim @@ -0,0 +1,279 @@ +" Vim indent file +" Language: SystemVerilog +" Maintainer: kocha <kocha.lsifrontend@gmail.com> +" Last Change: 05-Feb-2017 by Bilal Wasim +" 03-Aug-2022 Improved indent + +" 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,=`elsif,=`endif + +let b:undo_indent = "setl inde< indk<" + +" Only define the function once. +if exists("*SystemVerilogIndent") + finish +endif + +let s:cpo_save = &cpo +set cpo&vim + +let s:multiple_comment = 0 +let s:open_statement = 0 + +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 + + if exists('b:systemverilog_indent_ifdef_off') + let indent_ifdef = 0 + else + let indent_ifdef = 1 + 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) + " 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:systemverilog_indent_verbose') + let vverb_str = 'INDENT VERBOSE: '. v:lnum .":" + let vverb = 1 + else + let vverb = 0 + endif + + " Multiple-line comment count + if curr_line =~ '^\s*/\*' && curr_line !~ '/\*.\{-}\*/' + let s:multiple_comment += 1 + if vverb | echom vverb_str "Start of multiple-line commnt" | endif + elseif curr_line =~ '\*/\s*$' && curr_line !~ '/\*.\{-}\*/' + let s:multiple_comment -= 1 + if vverb | echom vverb_str "End of multiple-line commnt" | endif + return ind + endif + " Maintain indentation during commenting. + if s:multiple_comment > 0 + return ind + endif + + " Indent after if/else/for/case/always/initial/specify/fork blocks + if last_line =~ '^\s*\(end\)\=\s*`\@<!\<\(if\|else\)\>' || + \ last_line =~ '^\s*\<\(for\|while\|repeat\|case\%[[zx]]\|do\|foreach\|forever\|randcase\)\>' || + \ 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 | echom 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*\<\(property\|checker\|program\)\>' || + \ ( last_line =~ '^\s*\<virtual\>' && last_line =~ '\<\(function\|task\|class\|interface\)\>' ) || + \ ( last_line =~ '^\s*\<pure\>' && last_line =~ '\<virtual\>' && last_line =~ '\<\(function\|task\)\>' ) + if last_line !~ '\<end\>\s*' . sv_comment . '*$' || + \ last_line =~ '\(//\|/\*\).*\(;\|\<end\>\)\s*' . sv_comment . '*$' + let ind = ind + offset + if vverb + echom 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 + echom vverb_str "Indent after module statement." + endif + if last_line =~ '[(,]\s*' . sv_comment . '*$' && + \ last_line !~ '\(//\|/\*\).*[(,]\s*' . sv_comment . '*$' + let ind = ind + offset + if vverb + echom 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 | echom 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 | echom vverb_str "Indent after begin statement." | endif + + " Ignore de-indent for the end of one-line block + elseif ( last_line !~ '\<begin\>' || + \ last_line =~ '\(//\|/\*\).*\<begin\>' ) && + \ last_line2 =~ '\<\(`\@<!if\|`\@<!else\|for\|always\|initial\|do\|foreach\|forever\|final\)\>.*' . + \ sv_comment . '*$' && + \ last_line2 !~ '\(//\|/\*\).*\<\(`\@<!if\|`\@<!else\|for\|always\|initial\|do\|foreach\|forever\|final\)\>' && + \ last_line2 !~ sv_openstat . '\s*' . sv_comment . '*$' && + \ ( last_line2 !~ '\<begin\>' || + \ last_line2 =~ '\(//\|/\*\).*\<begin\>' ) && + \ last_line2 =~ ')*\s*;\s*' . sv_comment . '*$' + if vverb + echom vverb_str "Ignore de-indent after the end of one-line statement." + endif + + " De-indent for the end of one-line block + elseif ( last_line !~ '\<begin\>' || + \ last_line =~ '\(//\|/\*\).*\<begin\>' ) && + \ last_line2 =~ '\<\(`\@<!if\|`\@<!else\|for\|always\|initial\|do\|foreach\|forever\|final\)\>.*' . + \ sv_comment . '*$' && + \ last_line2 !~ '\(//\|/\*\).*\<\(`\@<!if\|`\@<!else\|for\|always\|initial\|do\|foreach\|forever\|final\)\>' && + \ last_line2 !~ sv_openstat . '\s*' . sv_comment . '*$' && + \ last_line2 !~ '\(;\|\<end\>\|\*/\)\s*' . sv_comment . '*$' && + \ ( last_line2 !~ '\<begin\>' || + \ last_line2 =~ '\(//\|/\*\).*\<begin\>' ) + let ind = ind - offset + if vverb + echom 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 + let s:open_statement = 1 + if vverb | echom vverb_str "Indent after an open statement." | endif + + " `ifdef or `ifndef or `elsif or `else + elseif last_line =~ '^\s*`\<\(ifn\?def\|elsif\|else\)\>' && indent_ifdef + let ind = ind + offset + if vverb + echom vverb_str "Indent after a `ifdef or `ifndef or `elsif 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*\<\(join\|join_any\|join_none\|\|end\|endcase\)\>' || + \ curr_line =~ '^\s*\<\(endfunction\|endtask\|endspecify\|endclass\)\>' || + \ curr_line =~ '^\s*\<\(endpackage\|endsequence\|endclocking\|endinterface\)\>' || + \ curr_line =~ '^\s*\<\(endgroup\|endproperty\|endchecker\|endprogram\)\>' + let ind = ind - offset + if vverb | echom vverb_str "De-indent the end of a block." | endif + if s:open_statement == 1 + let ind = ind - offset + let s:open_statement = 0 + if vverb | echom vverb_str "De-indent the close statement." | endif + endif + elseif curr_line =~ '^\s*\<endmodule\>' + let ind = ind - indent_modules + if vverb && indent_modules + echom 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 =~ + \ '\<\(`\@<!if\|`\@<!else\|for\|case\%[[zx]]\|always\|initial\|do\|foreach\|forever\|randcase\|final\)\>' || + \ last_line =~ ')\s*' . sv_comment . '*$' || + \ last_line =~ sv_openstat . '\s*' . sv_comment . '*$' ) + let ind = ind - offset + if vverb + echom vverb_str "De-indent a stand alone begin statement." + endif + if s:open_statement == 1 + let ind = ind - offset + let s:open_statement = 0 + if vverb | echom vverb_str "De-indent the close statement." | endif + endif + 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 | echom vverb_str "De-indent after a close statement." | 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 + " echom vverb_str "De-indent the end of a multiple statement." + " endif + + " De-indent `elsif or `else or `endif + elseif curr_line =~ '^\s*`\<\(elsif\|else\|endif\)\>' && indent_ifdef + let ind = ind - offset + if vverb | echom vverb_str "De-indent `elsif or `else or `endif statement." | endif + if b:systemverilog_open_statement == 1 + let ind = ind - offset + let b:systemverilog_open_statement = 0 + if vverb | echom vverb_str "De-indent the open statement." | endif + endif + endif + + " Return the indentation + return ind +endfunction + +let &cpo = s:cpo_save +unlet s:cpo_save + +" vim:sw=2 + |