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7
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1 " Description: Comshare Dimension Definition Language (CDL)
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25880
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2 " Maintainer: Raul Segura Acevedo <raulseguraaceved@netscape.net> (Invalid email address)
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3 " Doug Kearns <dougkearns@gmail.com>
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28379
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4 " Last Change: 2022 Apr 06
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7
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5
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6 if exists("b:did_indent")
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7 "finish
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8 endif
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9 let b:did_indent = 1
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10
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11 setlocal indentexpr=CdlGetIndent(v:lnum)
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12 setlocal indentkeys&
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13 setlocal indentkeys+==~else,=~endif,=~then,;,),=
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14
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28379
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15 let b:undo_indent = "setl inde< indk<"
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16
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7
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17 " Only define the function once.
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18 if exists("*CdlGetIndent")
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19 "finish
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20 endif
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21
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25773
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22 " find out if an "...=..." expression is an assignment (or a conditional)
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23 " it scans 'line' first, and then the previous lines
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7
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24 fun! CdlAsignment(lnum, line)
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25 let f = -1
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26 let lnum = a:lnum
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27 let line = a:line
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28 while lnum > 0 && f == -1
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29 " line without members [a] of [b]:[c]...
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30 let inicio = 0
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31 while 1
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32 " keywords that help to decide
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33 let inicio = matchend(line, '\c\<\(expr\|\a*if\|and\|or\|not\|else\|then\|memberis\|\k\+of\)\>\|[<>;]', inicio)
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34 if inicio < 0
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35 break
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36 endif
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37 " it's formula if there's a ';', 'elsE', 'theN', 'enDif' or 'expr'
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38 " conditional if there's a '<', '>', 'elseif', 'if', 'and', 'or', 'not',
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39 " 'memberis', 'childrenof' and other \k\+of functions
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40 let f = line[inicio-1] =~? '[en;]' || strpart(line, inicio-4, 4) =~? 'ndif\|expr'
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41 endw
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42 let lnum = prevnonblank(lnum-1)
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43 let line = substitute(getline(lnum), '\c\(\[[^]]*]\(\s*of\s*\|:\)*\)\+', ' ', 'g')
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44 endw
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45 " if we hit the start of the file then f = -1, return 1 (formula)
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46 return f != 0
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47 endf
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48
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49 fun! CdlGetIndent(lnum)
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50 let thisline = getline(a:lnum)
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51 if match(thisline, '^\s*\(\k\+\|\[[^]]*]\)\s*\(,\|;\s*$\)') >= 0
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52 " it's an attributes line
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11518
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53 return shiftwidth()
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54 elseif match(thisline, '^\c\s*\([{}]\|\/[*/]\|dimension\|schedule\|group\|hierarchy\|class\)') >= 0
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55 " it's a header or '{' or '}' or a comment
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56 return 0
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57 end
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58
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59 let lnum = prevnonblank(a:lnum-1)
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60 " Hit the start of the file, use zero indent.
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61 if lnum == 0
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62 return 0
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63 endif
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64
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65 " PREVIOUS LINE
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66 let ind = indent(lnum)
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67 let line = getline(lnum)
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24278
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68
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69 " Whether a '=' is a conditional or an assignment. -1 means we don't know
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70 " yet.
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71 " One 'closing' element at the beginning of the line has already reduced the
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72 " indent, but 'else', 'elseif' & 'then' increment it for the next line.
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73 " '=' at the beginning already has the right indent (increased for
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74 " asignments).
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75 let f = -1
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76 let inicio = matchend(line, '^\c\s*\(else\a*\|then\|endif\|/[*/]\|[);={]\)')
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77 if inicio > 0
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78 let c = line[inicio-1]
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79 " ')' and '=' don't change indent and are useless to set 'f'
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80 if c == '{'
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11518
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81 return shiftwidth()
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7
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82 elseif c != ')' && c != '='
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83 let f = 1 " all but 'elseif' are followed by a formula
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84 if c ==? 'n' || c ==? 'e' " 'then', 'else'
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11518
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85 let ind = ind + shiftwidth()
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86 elseif strpart(line, inicio-6, 6) ==? 'elseif' " elseif, set f to conditional
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87 let ind = ind + shiftwidth()
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88 let f = 0
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89 end
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90 end
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91 end
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92
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93 " remove members [a] of [b]:[c]... (inicio remainds valid)
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94 let line = substitute(line, '\c\(\[[^]]*]\(\s*of\s*\|:\)*\)\+', ' ', 'g')
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95 while 1
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96 " search for the next interesting element
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97 let inicio=matchend(line, '\c\<if\|endif\|[()=;]', inicio)
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98 if inicio < 0
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99 break
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100 end
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101
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102 let c = line[inicio-1]
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103 " 'expr(...)' containing the formula
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104 if strpart(line, inicio-5, 5) ==? 'expr('
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105 let ind = 0
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106 let f = 1
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107 elseif c == ')' || c== ';' || strpart(line, inicio-5, 5) ==? 'endif'
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11518
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108 let ind = ind - shiftwidth()
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109 elseif c == '(' || c ==? 'f' " '(' or 'if'
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11518
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110 let ind = ind + shiftwidth()
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7
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111 else " c == '='
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25773
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112 " if it is an assignment increase indent
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113 if f == -1 " we don't know yet, find out
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114 let f = CdlAsignment(lnum, strpart(line, 0, inicio))
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115 end
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116 if f == 1 " formula increase it
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11518
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117 let ind = ind + shiftwidth()
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118 end
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119 end
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120 endw
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121
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122 " CURRENT LINE, if it starts with a closing element, decrease indent
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123 " or if it starts with '=' (assignment), increase indent
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124 if match(thisline, '^\c\s*\(else\|then\|endif\|[);]\)') >= 0
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11518
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125 let ind = ind - shiftwidth()
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126 elseif match(thisline, '^\s*=') >= 0
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25773
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127 if f == -1 " we don't know yet if is an assignment, find out
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7
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128 let f = CdlAsignment(lnum, "")
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129 end
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130 if f == 1 " formula increase it
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11518
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131 let ind = ind + shiftwidth()
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7
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132 end
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133 end
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134
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135 return ind
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136 endfun
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