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-rw-r--r--runtime/indent/verilog.vim229
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+" Language: Verilog HDL
+" Maintainer: Chih-Tsun Huang <cthuang@cs.nthu.edu.tw>
+" Last Change: 2017 Aug 25 by Chih-Tsun Huang
+" URL: http://www.cs.nthu.edu.tw/~cthuang/vim/indent/verilog.vim
+"
+" Credits:
+" Suggestions for improvement, bug reports by
+" Takuya Fujiwara <tyru.exe@gmail.com>
+" Thilo Six <debian@Xk2c.de>
+" Leo Butlero <lbutler@brocade.com>
+"
+" Buffer Variables:
+" b:verilog_indent_modules : indenting after the declaration
+" of module blocks
+" b:verilog_indent_width : indenting width
+" b:verilog_indent_verbose : verbose to each indenting
+"
+
+" Only load this indent file when no other was loaded.
+if exists("b:did_indent")
+ finish
+endif
+let b:did_indent = 1
+
+setlocal indentexpr=GetVerilogIndent()
+setlocal indentkeys=!^F,o,O,0),=begin,=end,=join,=endcase
+setlocal indentkeys+==endmodule,=endfunction,=endtask,=endspecify
+setlocal indentkeys+==endconfig,=endgenerate,=endprimitive,=endtable
+setlocal indentkeys+==`else,=`elsif,=`endif
+
+" Only define the function once.
+if exists("*GetVerilogIndent")
+ finish
+endif
+
+let s:cpo_save = &cpo
+set cpo&vim
+
+function GetVerilogIndent()
+
+ if exists('b:verilog_indent_width')
+ let offset = b:verilog_indent_width
+ else
+ let offset = shiftwidth()
+ endif
+ if exists('b:verilog_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 vlog_openstat = '\(\<or\>\|\([*/]\)\@<![*(,{><+-/%^&|!=?:]\([*/]\)\@!\)'
+ " Define the condition when the statement ends with a one-line comment
+ let vlog_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
+ " Note: We exclude '`if' or '`else' and consider 'end else'
+ " 'end if' is redundant here
+ elseif last_line =~ '^\s*\(end\)\=\s*`\@<!\<\(if\|else\)\>' ||
+ \ last_line =~ '^\s*\<\(for\|case\%[[zx]]\)\>' ||
+ \ last_line =~ '^\s*\<\(always\|initial\)\>' ||
+ \ last_line =~ '^\s*\<\(specify\|fork\)\>'
+ if last_line !~ '\(;\|\<end\>\)\s*' . vlog_comment . '*$' ||
+ \ last_line =~ '\(//\|/\*\).*\(;\|\<end\>\)\s*' . vlog_comment . '*$'
+ let ind = ind + offset
+ if vverb | echo vverb_str "Indent after a block statement." | endif
+ endif
+ " Indent after function/task/config/generate/primitive/table blocks
+ elseif last_line =~ '^\s*\<\(function\|task\|config\|generate\|primitive\|table\)\>'
+ if last_line !~ '\<end\>\s*' . vlog_comment . '*$' ||
+ \ last_line =~ '\(//\|/\*\).*\(;\|\<end\>\)\s*' . vlog_comment . '*$'
+ let ind = ind + offset
+ if vverb
+ echo vverb_str "Indent after function/task block statement."
+ endif
+ endif
+
+ " Indent after module/function/task/specify/fork blocks
+ elseif last_line =~ '^\s*\<module\>'
+ let ind = ind + indent_modules
+ if vverb && indent_modules
+ echo vverb_str "Indent after module statement."
+ endif
+ if last_line =~ '[(,]\s*' . vlog_comment . '*$' &&
+ \ last_line !~ '\(//\|/\*\).*[(,]\s*' . vlog_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 =~ '\(\<begin\>\)\(\s*:\s*\w\+\)*' . vlog_comment . '*$' &&
+ \ last_line !~ '\(//\|/\*\).*\(\<begin\>\)' &&
+ \ ( last_line2 !~ vlog_openstat . '\s*' . vlog_comment . '*$' ||
+ \ last_line2 =~ '^\s*[^=!]\+\s*:\s*' . vlog_comment . '*$' )
+ 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 =~ '\<\(`\@<!if\|`\@<!else\|for\|always\|initial\)\>.*' .
+ \ vlog_comment . '*$' &&
+ \ last_line2 !~
+ \ '\(//\|/\*\).*\<\(`\@<!if\|`\@<!else\|for\|always\|initial\)\>' &&
+ \ last_line2 !~ vlog_openstat . '\s*' . vlog_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 =~ vlog_openstat . '\s*' . vlog_comment . '*$' &&
+ \ last_line !~ '\(//\|/\*\).*' . vlog_openstat . '\s*$' &&
+ \ last_line2 !~ vlog_openstat . '\s*' . vlog_comment . '*$'
+ 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*' . vlog_comment . '*$' &&
+ \ last_line !~ '^\s*)*\s*;\s*' . vlog_comment . '*$' &&
+ \ last_line !~ '\(//\|/\*\).*\S)*\s*;\s*' . vlog_comment . '*$' &&
+ \ ( last_line2 =~ vlog_openstat . '\s*' . vlog_comment . '*$' &&
+ \ last_line2 !~ ';\s*//.*$') &&
+ \ last_line2 !~ '^\s*' . vlog_comment . '$'
+ let ind = ind - offset
+ if vverb | echo vverb_str "De-indent after a close statement." | endif
+
+ " `ifdef or `ifndef or `elsif or `else
+ elseif last_line =~ '^\s*`\<\(ifn\?def\|elsif\|else\)\>'
+ let ind = ind + offset
+ if vverb
+ echo 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*\<\(join\|end\|endcase\)\>' ||
+ \ curr_line =~ '^\s*\<\(endfunction\|endtask\|endspecify\)\>' ||
+ \ curr_line =~ '^\s*\<\(endconfig\|endgenerate\|endprimitive\|endtable\)\>'
+ 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*\<\(function\|task\|specify\|module\|config\|generate\|primitive\|table\)\>' &&
+ \ last_line !~ '^\s*\()*\s*;\|)\+\)\s*' . vlog_comment . '*$' &&
+ \ ( last_line =~
+ \ '\<\(`\@<!if\|`\@<!else\|for\|case\%[[zx]]\|always\|initial\)\>' ||
+ \ last_line =~ ')\s*' . vlog_comment . '*$' ||
+ \ last_line =~ vlog_openstat . '\s*' . vlog_comment . '*$' )
+ 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 =~ vlog_openstat . '\s*' . vlog_comment . '*$' ||
+ \ last_line !~ vlog_openstat . '\s*' . vlog_comment . '*$' &&
+ \ last_line2 =~ vlog_openstat . '\s*' . vlog_comment . '*$' )
+ let ind = ind - offset
+ if vverb
+ echo vverb_str "De-indent the end of a multiple statement."
+ endif
+
+ " De-indent `elsif or `else or `endif
+ elseif curr_line =~ '^\s*`\<\(elsif\|else\|endif\)\>'
+ let ind = ind - offset
+ if vverb | echo vverb_str "De-indent `elsif or `else or `endif statement." | endif
+
+ endif
+
+ " Return the indention
+ return ind
+endfunction
+
+let &cpo = s:cpo_save
+unlet s:cpo_save
+
+" vim:sw=2
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-29 11:17:01 +0000