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1 " Description: Comshare Dimension Definition Language (CDL)
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2 " Author: Raul Segura Acevedo <raulseguraaceved@netscape.net>
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3 " Last Change: Fri Nov 30 13:35:48 2001 CST
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4
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5 if exists("b:did_indent")
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6 "finish
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7 endif
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8 let b:did_indent = 1
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9
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10 setlocal indentexpr=CdlGetIndent(v:lnum)
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11 setlocal indentkeys&
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12 setlocal indentkeys+==~else,=~endif,=~then,;,),=
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13
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14 " Only define the function once.
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15 if exists("*CdlGetIndent")
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16 "finish
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17 endif
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18
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19 " find out if an "...=..." expresion its an asignment (or a conditional)
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20 " it scans 'line' first, and then the previos lines
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21 fun! CdlAsignment(lnum, line)
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22 let f = -1
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23 let lnum = a:lnum
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24 let line = a:line
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25 while lnum > 0 && f == -1
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26 " line without members [a] of [b]:[c]...
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27 let inicio = 0
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28 while 1
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29 " keywords that help to decide
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30 let inicio = matchend(line, '\c\<\(expr\|\a*if\|and\|or\|not\|else\|then\|memberis\|\k\+of\)\>\|[<>;]', inicio)
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31 if inicio < 0
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32 break
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33 endif
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34 " it's formula if there's a ';', 'elsE', 'theN', 'enDif' or 'expr'
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35 " conditional if there's a '<', '>', 'elseif', 'if', 'and', 'or', 'not',
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36 " 'memberis', 'childrenof' and other \k\+of funcions
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37 let f = line[inicio-1] =~? '[en;]' || strpart(line, inicio-4, 4) =~? 'ndif\|expr'
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38 endw
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39 let lnum = prevnonblank(lnum-1)
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40 let line = substitute(getline(lnum), '\c\(\[[^]]*]\(\s*of\s*\|:\)*\)\+', ' ', 'g')
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41 endw
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42 " if we hit the start of the file then f = -1, return 1 (formula)
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43 return f != 0
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44 endf
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45
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46 fun! CdlGetIndent(lnum)
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47 let thisline = getline(a:lnum)
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48 if match(thisline, '^\s*\(\k\+\|\[[^]]*]\)\s*\(,\|;\s*$\)') >= 0
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49 " it's an attributes line
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50 return &sw
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51 elseif match(thisline, '^\c\s*\([{}]\|\/[*/]\|dimension\|schedule\|group\|hierarchy\|class\)') >= 0
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52 " it's a header or '{' or '}' or a comment
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53 return 0
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54 end
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55
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56 let lnum = prevnonblank(a:lnum-1)
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57 " Hit the start of the file, use zero indent.
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58 if lnum == 0
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59 return 0
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60 endif
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61
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62 " PREVIOUS LINE
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63 let ind = indent(lnum)
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64 let line = getline(lnum)
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65 let f = -1 " wether a '=' is a conditional or a asignment, -1 means we don't know yet
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66 " one 'closing' element at the beginning of the line has already reduced the
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67 " indent, but 'else', 'elseif' & 'then' increment it for the next line
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68 " '=' at the beginning has already de right indent (increased for asignments)
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69 let inicio = matchend(line, '^\c\s*\(else\a*\|then\|endif\|/[*/]\|[);={]\)')
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70 if inicio > 0
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71 let c = line[inicio-1]
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72 " ')' and '=' don't change indent and are useless to set 'f'
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73 if c == '{'
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74 return &sw
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75 elseif c != ')' && c != '='
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76 let f = 1 " all but 'elseif' are followed by a formula
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77 if c ==? 'n' || c ==? 'e' " 'then', 'else'
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78 let ind = ind + &sw
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79 elseif strpart(line, inicio-6, 6) ==? 'elseif' " elseif, set f to conditional
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80 let ind = ind + &sw
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81 let f = 0
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82 end
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83 end
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84 end
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85
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86 " remove members [a] of [b]:[c]... (inicio remainds valid)
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87 let line = substitute(line, '\c\(\[[^]]*]\(\s*of\s*\|:\)*\)\+', ' ', 'g')
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88 while 1
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89 " search for the next interesting element
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90 let inicio=matchend(line, '\c\<if\|endif\|[()=;]', inicio)
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91 if inicio < 0
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92 break
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93 end
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94
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95 let c = line[inicio-1]
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96 " 'expr(...)' containing the formula
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97 if strpart(line, inicio-5, 5) ==? 'expr('
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98 let ind = 0
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99 let f = 1
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100 elseif c == ')' || c== ';' || strpart(line, inicio-5, 5) ==? 'endif'
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101 let ind = ind - &sw
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102 elseif c == '(' || c ==? 'f' " '(' or 'if'
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103 let ind = ind + &sw
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104 else " c == '='
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105 " if it is an asignment increase indent
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106 if f == -1 " we don't know yet, find out
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107 let f = CdlAsignment(lnum, strpart(line, 0, inicio))
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108 end
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109 if f == 1 " formula increase it
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110 let ind = ind + &sw
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111 end
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112 end
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113 endw
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114
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115 " CURRENT LINE, if it starts with a closing element, decrease indent
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116 " or if it starts with '=' (asignment), increase indent
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117 if match(thisline, '^\c\s*\(else\|then\|endif\|[);]\)') >= 0
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118 let ind = ind - &sw
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119 elseif match(thisline, '^\s*=') >= 0
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120 if f == -1 " we don't know yet if is an asignment, find out
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121 let f = CdlAsignment(lnum, "")
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122 end
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123 if f == 1 " formula increase it
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124 let ind = ind + &sw
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125 end
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126 end
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127
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128 return ind
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129 endfun
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