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Diffstat (limited to 'runtime/indent/cdl.vim')
| -rw-r--r-- | runtime/indent/cdl.vim | 136 |
1 files changed, 136 insertions, 0 deletions
diff --git a/runtime/indent/cdl.vim b/runtime/indent/cdl.vim new file mode 100644 index 0000000..2c0fc79 --- /dev/null +++ b/runtime/indent/cdl.vim @@ -0,0 +1,136 @@ +" Description: Comshare Dimension Definition Language (CDL) +" Maintainer: Raul Segura Acevedo <raulseguraaceved@netscape.net> (Invalid email address) +" Doug Kearns <dougkearns@gmail.com> +" Last Change: 2022 Apr 06 + +if exists("b:did_indent") + "finish +endif +let b:did_indent = 1 + +setlocal indentexpr=CdlGetIndent(v:lnum) +setlocal indentkeys& +setlocal indentkeys+==~else,=~endif,=~then,;,),= + +let b:undo_indent = "setl inde< indk<" + +" Only define the function once. +if exists("*CdlGetIndent") + "finish +endif + +" find out if an "...=..." expression is an assignment (or a conditional) +" it scans 'line' first, and then the previous lines +fun! CdlAsignment(lnum, line) + let f = -1 + let lnum = a:lnum + let line = a:line + while lnum > 0 && f == -1 + " line without members [a] of [b]:[c]... + let inicio = 0 + while 1 + " keywords that help to decide + let inicio = matchend(line, '\c\<\(expr\|\a*if\|and\|or\|not\|else\|then\|memberis\|\k\+of\)\>\|[<>;]', inicio) + if inicio < 0 + break + endif + " it's formula if there's a ';', 'elsE', 'theN', 'enDif' or 'expr' + " conditional if there's a '<', '>', 'elseif', 'if', 'and', 'or', 'not', + " 'memberis', 'childrenof' and other \k\+of functions + let f = line[inicio-1] =~? '[en;]' || strpart(line, inicio-4, 4) =~? 'ndif\|expr' + endw + let lnum = prevnonblank(lnum-1) + let line = substitute(getline(lnum), '\c\(\[[^]]*]\(\s*of\s*\|:\)*\)\+', ' ', 'g') + endw + " if we hit the start of the file then f = -1, return 1 (formula) + return f != 0 +endf + +fun! CdlGetIndent(lnum) + let thisline = getline(a:lnum) + if match(thisline, '^\s*\(\k\+\|\[[^]]*]\)\s*\(,\|;\s*$\)') >= 0 + " it's an attributes line + return shiftwidth() + elseif match(thisline, '^\c\s*\([{}]\|\/[*/]\|dimension\|schedule\|group\|hierarchy\|class\)') >= 0 + " it's a header or '{' or '}' or a comment + return 0 + end + + let lnum = prevnonblank(a:lnum-1) + " Hit the start of the file, use zero indent. + if lnum == 0 + return 0 + endif + + " PREVIOUS LINE + let ind = indent(lnum) + let line = getline(lnum) + + " Whether a '=' is a conditional or an assignment. -1 means we don't know + " yet. + " One 'closing' element at the beginning of the line has already reduced the + " indent, but 'else', 'elseif' & 'then' increment it for the next line. + " '=' at the beginning already has the right indent (increased for + " asignments). + let f = -1 + let inicio = matchend(line, '^\c\s*\(else\a*\|then\|endif\|/[*/]\|[);={]\)') + if inicio > 0 + let c = line[inicio-1] + " ')' and '=' don't change indent and are useless to set 'f' + if c == '{' + return shiftwidth() + elseif c != ')' && c != '=' + let f = 1 " all but 'elseif' are followed by a formula + if c ==? 'n' || c ==? 'e' " 'then', 'else' + let ind = ind + shiftwidth() + elseif strpart(line, inicio-6, 6) ==? 'elseif' " elseif, set f to conditional + let ind = ind + shiftwidth() + let f = 0 + end + end + end + + " remove members [a] of [b]:[c]... (inicio remainds valid) + let line = substitute(line, '\c\(\[[^]]*]\(\s*of\s*\|:\)*\)\+', ' ', 'g') + while 1 + " search for the next interesting element + let inicio=matchend(line, '\c\<if\|endif\|[()=;]', inicio) + if inicio < 0 + break + end + + let c = line[inicio-1] + " 'expr(...)' containing the formula + if strpart(line, inicio-5, 5) ==? 'expr(' + let ind = 0 + let f = 1 + elseif c == ')' || c== ';' || strpart(line, inicio-5, 5) ==? 'endif' + let ind = ind - shiftwidth() + elseif c == '(' || c ==? 'f' " '(' or 'if' + let ind = ind + shiftwidth() + else " c == '=' + " if it is an assignment increase indent + if f == -1 " we don't know yet, find out + let f = CdlAsignment(lnum, strpart(line, 0, inicio)) + end + if f == 1 " formula increase it + let ind = ind + shiftwidth() + end + end + endw + + " CURRENT LINE, if it starts with a closing element, decrease indent + " or if it starts with '=' (assignment), increase indent + if match(thisline, '^\c\s*\(else\|then\|endif\|[);]\)') >= 0 + let ind = ind - shiftwidth() + elseif match(thisline, '^\s*=') >= 0 + if f == -1 " we don't know yet if is an assignment, find out + let f = CdlAsignment(lnum, "") + end + if f == 1 " formula increase it + let ind = ind + shiftwidth() + end + end + + return ind +endfun |