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502
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1 " Vim completion script
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2 " Language: C
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3 " Maintainer: Bram Moolenaar <Bram@vim.org>
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3682
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4 " Last Change: 2012 Jun 20
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502
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5
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3237
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6 let s:cpo_save = &cpo
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7 set cpo&vim
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516
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8
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523
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9 " This function is used for the 'omnifunc' option.
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502
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10 function! ccomplete#Complete(findstart, base)
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11 if a:findstart
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654
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12 " Locate the start of the item, including ".", "->" and "[...]".
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502
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13 let line = getline('.')
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14 let start = col('.') - 1
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548
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15 let lastword = -1
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502
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16 while start > 0
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548
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17 if line[start - 1] =~ '\w'
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18 let start -= 1
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19 elseif line[start - 1] =~ '\.'
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20 if lastword == -1
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21 let lastword = start
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22 endif
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502
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23 let start -= 1
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24 elseif start > 1 && line[start - 2] == '-' && line[start - 1] == '>'
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548
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25 if lastword == -1
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26 let lastword = start
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27 endif
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502
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28 let start -= 2
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654
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29 elseif line[start - 1] == ']'
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30 " Skip over [...].
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31 let n = 0
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32 let start -= 1
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33 while start > 0
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34 let start -= 1
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35 if line[start] == '['
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36 if n == 0
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37 break
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38 endif
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39 let n -= 1
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40 elseif line[start] == ']' " nested []
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41 let n += 1
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42 endif
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43 endwhile
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502
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44 else
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45 break
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46 endif
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47 endwhile
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548
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48
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49 " Return the column of the last word, which is going to be changed.
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50 " Remember the text that comes before it in s:prepended.
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51 if lastword == -1
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52 let s:prepended = ''
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53 return start
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54 endif
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55 let s:prepended = strpart(line, start, lastword - start)
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56 return lastword
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502
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57 endif
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58
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511
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59 " Return list of matches.
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60
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548
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61 let base = s:prepended . a:base
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62
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654
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63 " Don't do anything for an empty base, would result in all the tags in the
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64 " tags file.
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65 if base == ''
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66 return []
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67 endif
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68
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720
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69 " init cache for vimgrep to empty
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70 let s:grepCache = {}
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71
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511
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72 " Split item in words, keep empty word after "." or "->".
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73 " "aa" -> ['aa'], "aa." -> ['aa', ''], "aa.bb" -> ['aa', 'bb'], etc.
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654
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74 " We can't use split, because we need to skip nested [...].
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75 let items = []
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76 let s = 0
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77 while 1
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78 let e = match(base, '\.\|->\|\[', s)
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79 if e < 0
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80 if s == 0 || base[s - 1] != ']'
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81 call add(items, strpart(base, s))
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82 endif
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83 break
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84 endif
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85 if s == 0 || base[s - 1] != ']'
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86 call add(items, strpart(base, s, e - s))
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548
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87 endif
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654
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88 if base[e] == '.'
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89 let s = e + 1 " skip over '.'
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90 elseif base[e] == '-'
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91 let s = e + 2 " skip over '->'
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92 else
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93 " Skip over [...].
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94 let n = 0
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95 let s = e
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96 let e += 1
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97 while e < len(base)
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98 if base[e] == ']'
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99 if n == 0
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100 break
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101 endif
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102 let n -= 1
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103 elseif base[e] == '[' " nested [...]
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104 let n += 1
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105 endif
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106 let e += 1
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107 endwhile
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108 let e += 1
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109 call add(items, strpart(base, s, e - s))
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110 let s = e
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111 endif
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112 endwhile
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505
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113
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516
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114 " Find the variable items[0].
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115 " 1. in current function (like with "gd")
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116 " 2. in tags file(s) (like with ":tag")
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117 " 3. in current file (like with "gD")
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118 let res = []
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523
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119 if searchdecl(items[0], 0, 1) == 0
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505
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120 " Found, now figure out the type.
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121 " TODO: join previous line if it makes sense
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122 let line = getline('.')
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123 let col = col('.')
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1624
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124 if stridx(strpart(line, 0, col), ';') != -1
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125 " Handle multiple declarations on the same line.
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126 let col2 = col - 1
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127 while line[col2] != ';'
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128 let col2 -= 1
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129 endwhile
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130 let line = strpart(line, col2 + 1)
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131 let col -= col2
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132 endif
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133 if stridx(strpart(line, 0, col), ',') != -1
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134 " Handle multiple declarations on the same line in a function
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135 " declaration.
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136 let col2 = col - 1
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137 while line[col2] != ','
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138 let col2 -= 1
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139 endwhile
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140 if strpart(line, col2 + 1, col - col2 - 1) =~ ' *[^ ][^ ]* *[^ ]'
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141 let line = strpart(line, col2 + 1)
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142 let col -= col2
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143 endif
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144 endif
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654
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145 if len(items) == 1
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146 " Completing one word and it's a local variable: May add '[', '.' or
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147 " '->'.
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148 let match = items[0]
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734
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149 let kind = 'v'
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150 if match(line, '\<' . match . '\s*\[') > 0
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654
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151 let match .= '['
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152 else
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716
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153 let res = s:Nextitem(strpart(line, 0, col), [''], 0, 1)
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654
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154 if len(res) > 0
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155 " There are members, thus add "." or "->".
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156 if match(line, '\*[ \t(]*' . match . '\>') > 0
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157 let match .= '->'
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158 else
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159 let match .= '.'
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160 endif
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161 endif
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162 endif
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734
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163 let res = [{'match': match, 'tagline' : '', 'kind' : kind, 'info' : line}]
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654
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164 else
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165 " Completing "var.", "var.something", etc.
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2152
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166 let res = s:Nextitem(strpart(line, 0, col), items[1:], 0, 1)
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654
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167 endif
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168 endif
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169
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170 if len(items) == 1
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171 " Only one part, no "." or "->": complete from tags file.
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734
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172 let tags = taglist('^' . base)
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173
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174 " Remove members, these can't appear without something in front.
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175 call filter(tags, 'has_key(v:val, "kind") ? v:val["kind"] != "m" : 1')
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176
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177 " Remove static matches in other files.
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178 call filter(tags, '!has_key(v:val, "static") || !v:val["static"] || bufnr("%") == bufnr(v:val["filename"])')
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179
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180 call extend(res, map(tags, 's:Tag2item(v:val)'))
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516
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181 endif
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182
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183 if len(res) == 0
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184 " Find the variable in the tags file(s)
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511
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185 let diclist = taglist('^' . items[0] . '$')
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186
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734
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187 " Remove members, these can't appear without something in front.
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188 call filter(diclist, 'has_key(v:val, "kind") ? v:val["kind"] != "m" : 1')
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189
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511
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190 let res = []
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505
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191 for i in range(len(diclist))
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800
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192 " New ctags has the "typeref" field. Patched version has "typename".
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516
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193 if has_key(diclist[i], 'typename')
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716
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194 call extend(res, s:StructMembers(diclist[i]['typename'], items[1:], 1))
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800
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195 elseif has_key(diclist[i], 'typeref')
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196 call extend(res, s:StructMembers(diclist[i]['typeref'], items[1:], 1))
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516
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197 endif
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198
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199 " For a variable use the command, which must be a search pattern that
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200 " shows the declaration of the variable.
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505
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201 if diclist[i]['kind'] == 'v'
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202 let line = diclist[i]['cmd']
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203 if line[0] == '/' && line[1] == '^'
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610
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204 let col = match(line, '\<' . items[0] . '\>')
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716
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205 call extend(res, s:Nextitem(strpart(line, 2, col - 2), items[1:], 0, 1))
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505
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206 endif
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207 endif
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208 endfor
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209 endif
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210
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516
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211 if len(res) == 0 && searchdecl(items[0], 1) == 0
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212 " Found, now figure out the type.
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213 " TODO: join previous line if it makes sense
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214 let line = getline('.')
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215 let col = col('.')
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716
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216 let res = s:Nextitem(strpart(line, 0, col), items[1:], 0, 1)
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523
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217 endif
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218
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654
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219 " If the last item(s) are [...] they need to be added to the matches.
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220 let last = len(items) - 1
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221 let brackets = ''
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222 while last >= 0
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223 if items[last][0] != '['
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224 break
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523
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225 endif
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654
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226 let brackets = items[last] . brackets
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227 let last -= 1
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228 endwhile
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516
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229
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654
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230 return map(res, 's:Tagline2item(v:val, brackets)')
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511
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231 endfunc
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232
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654
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233 function! s:GetAddition(line, match, memarg, bracket)
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234 " Guess if the item is an array.
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235 if a:bracket && match(a:line, a:match . '\s*\[') > 0
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236 return '['
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237 endif
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238
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239 " Check if the item has members.
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716
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240 if len(s:SearchMembers(a:memarg, [''], 0)) > 0
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654
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241 " If there is a '*' before the name use "->".
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242 if match(a:line, '\*[ \t(]*' . a:match . '\>') > 0
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243 return '->'
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244 else
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245 return '.'
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246 endif
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247 endif
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248 return ''
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249 endfunction
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250
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648
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251 " Turn the tag info "val" into an item for completion.
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252 " "val" is is an item in the list returned by taglist().
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654
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253 " If it is a variable we may add "." or "->". Don't do it for other types,
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254 " such as a typedef, by not including the info that s:GetAddition() uses.
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648
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255 function! s:Tag2item(val)
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734
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256 let res = {'match': a:val['name']}
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257
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258 let res['extra'] = s:Tagcmd2extra(a:val['cmd'], a:val['name'], a:val['filename'])
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666
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259
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800
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260 let s = s:Dict2info(a:val)
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734
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261 if s != ''
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800
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262 let res['info'] = s
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734
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263 endif
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264
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265 let res['tagline'] = ''
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654
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266 if has_key(a:val, "kind")
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734
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267 let kind = a:val['kind']
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268 let res['kind'] = kind
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269 if kind == 'v'
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270 let res['tagline'] = "\t" . a:val['cmd']
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271 let res['dict'] = a:val
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272 elseif kind == 'f'
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273 let res['match'] = a:val['name'] . '('
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648
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274 endif
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275 endif
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734
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276
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277 return res
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654
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278 endfunction
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279
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800
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280 " Use all the items in dictionary for the "info" entry.
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281 function! s:Dict2info(dict)
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282 let info = ''
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283 for k in sort(keys(a:dict))
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284 let info .= k . repeat(' ', 10 - len(k))
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285 if k == 'cmd'
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286 let info .= substitute(matchstr(a:dict['cmd'], '/^\s*\zs.*\ze$/'), '\\\(.\)', '\1', 'g')
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287 else
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288 let info .= a:dict[k]
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289 endif
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290 let info .= "\n"
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291 endfor
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292 return info
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293 endfunc
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294
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295 " Parse a tag line and return a dictionary with items like taglist()
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296 function! s:ParseTagline(line)
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297 let l = split(a:line, "\t")
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298 let d = {}
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299 if len(l) >= 3
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300 let d['name'] = l[0]
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301 let d['filename'] = l[1]
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302 let d['cmd'] = l[2]
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303 let n = 2
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304 if l[2] =~ '^/'
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305 " Find end of cmd, it may contain Tabs.
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306 while n < len(l) && l[n] !~ '/;"$'
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307 let n += 1
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308 let d['cmd'] .= " " . l[n]
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309 endwhile
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310 endif
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311 for i in range(n + 1, len(l) - 1)
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312 if l[i] == 'file:'
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313 let d['static'] = 1
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314 elseif l[i] !~ ':'
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315 let d['kind'] = l[i]
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316 else
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317 let d[matchstr(l[i], '[^:]*')] = matchstr(l[i], ':\zs.*')
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318 endif
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319 endfor
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320 endif
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321
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322 return d
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323 endfunction
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324
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654
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325 " Turn a match item "val" into an item for completion.
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326 " "val['match']" is the matching item.
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327 " "val['tagline']" is the tagline in which the last part was found.
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328 function! s:Tagline2item(val, brackets)
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666
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329 let line = a:val['tagline']
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734
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330 let add = s:GetAddition(line, a:val['match'], [a:val], a:brackets == '')
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331 let res = {'word': a:val['match'] . a:brackets . add }
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332
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333 if has_key(a:val, 'info')
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334 " Use info from Tag2item().
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335 let res['info'] = a:val['info']
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336 else
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800
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337 " Parse the tag line and add each part to the "info" entry.
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338 let s = s:Dict2info(s:ParseTagline(line))
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734
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339 if s != ''
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800
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340 let res['info'] = s
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734
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341 endif
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342 endif
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343
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344 if has_key(a:val, 'kind')
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345 let res['kind'] = a:val['kind']
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346 elseif add == '('
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347 let res['kind'] = 'f'
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348 else
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349 let s = matchstr(line, '\t\(kind:\)\=\zs\S\ze\(\t\|$\)')
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350 if s != ''
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351 let res['kind'] = s
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352 endif
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353 endif
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354
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659
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355 if has_key(a:val, 'extra')
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734
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356 let res['menu'] = a:val['extra']
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357 return res
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659
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358 endif
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666
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359
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360 " Isolate the command after the tag and filename.
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361 let s = matchstr(line, '[^\t]*\t[^\t]*\t\zs\(/^.*$/\|[^\t]*\)\ze\(;"\t\|\t\|$\)')
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362 if s != ''
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734
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363 let res['menu'] = s:Tagcmd2extra(s, a:val['match'], matchstr(line, '[^\t]*\t\zs[^\t]*\ze\t'))
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666
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364 endif
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734
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365 return res
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648
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366 endfunction
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367
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666
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368 " Turn a command from a tag line to something that is useful in the menu
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369 function! s:Tagcmd2extra(cmd, name, fname)
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370 if a:cmd =~ '^/^'
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371 " The command is a search command, useful to see what it is.
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716
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372 let x = matchstr(a:cmd, '^/^\s*\zs.*\ze$/')
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373 let x = substitute(x, '\<' . a:name . '\>', '@@', '')
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666
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374 let x = substitute(x, '\\\(.\)', '\1', 'g')
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375 let x = x . ' - ' . a:fname
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376 elseif a:cmd =~ '^\d*$'
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377 " The command is a line number, the file name is more useful.
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378 let x = a:fname . ' - ' . a:cmd
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379 else
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380 " Not recognized, use command and file name.
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381 let x = a:cmd . ' - ' . a:fname
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382 endif
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383 return x
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384 endfunction
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648
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385
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516
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386 " Find composing type in "lead" and match items[0] with it.
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387 " Repeat this recursively for items[1], if it's there.
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654
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388 " When resolving typedefs "depth" is used to avoid infinite recursion.
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516
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389 " Return the list of matches.
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716
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390 function! s:Nextitem(lead, items, depth, all)
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511
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391
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|
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392 " Use the text up to the variable name and split it in tokens.
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393 let tokens = split(a:lead, '\s\+\|\<')
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394
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395 " Try to recognize the type of the variable. This is rough guessing...
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516
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396 let res = []
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511
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397 for tidx in range(len(tokens))
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505
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398
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720
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399 " Skip tokens starting with a non-ID character.
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400 if tokens[tidx] !~ '^\h'
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401 continue
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402 endif
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403
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516
|
404 " Recognize "struct foobar" and "union foobar".
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860
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405 " Also do "class foobar" when it's C++ after all (doesn't work very well
|
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406 " though).
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407 if (tokens[tidx] == 'struct' || tokens[tidx] == 'union' || tokens[tidx] == 'class') && tidx + 1 < len(tokens)
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716
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408 let res = s:StructMembers(tokens[tidx] . ':' . tokens[tidx + 1], a:items, a:all)
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511
|
409 break
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|
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410 endif
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411
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516
|
412 " TODO: add more reserved words
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654
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413 if index(['int', 'short', 'char', 'float', 'double', 'static', 'unsigned', 'extern'], tokens[tidx]) >= 0
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516
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414 continue
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415 endif
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416
|
|
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417 " Use the tags file to find out if this is a typedef.
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511
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418 let diclist = taglist('^' . tokens[tidx] . '$')
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523
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419 for tagidx in range(len(diclist))
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734
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420 let item = diclist[tagidx]
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421
|
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800
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422 " New ctags has the "typeref" field. Patched version has "typename".
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|
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423 if has_key(item, 'typeref')
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424 call extend(res, s:StructMembers(item['typeref'], a:items, a:all))
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425 continue
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|
|
426 endif
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|
734
|
427 if has_key(item, 'typename')
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|
|
428 call extend(res, s:StructMembers(item['typename'], a:items, a:all))
|
|
523
|
429 continue
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|
|
430 endif
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|
|
431
|
|
|
432 " Only handle typedefs here.
|
|
734
|
433 if item['kind'] != 't'
|
|
|
434 continue
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|
|
435 endif
|
|
|
436
|
|
|
437 " Skip matches local to another file.
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|
|
438 if has_key(item, 'static') && item['static'] && bufnr('%') != bufnr(item['filename'])
|
|
516
|
439 continue
|
|
|
440 endif
|
|
|
441
|
|
523
|
442 " For old ctags we recognize "typedef struct aaa" and
|
|
|
443 " "typedef union bbb" in the tags file command.
|
|
734
|
444 let cmd = item['cmd']
|
|
523
|
445 let ei = matchend(cmd, 'typedef\s\+')
|
|
|
446 if ei > 1
|
|
|
447 let cmdtokens = split(strpart(cmd, ei), '\s\+\|\<')
|
|
|
448 if len(cmdtokens) > 1
|
|
860
|
449 if cmdtokens[0] == 'struct' || cmdtokens[0] == 'union' || cmdtokens[0] == 'class'
|
|
523
|
450 let name = ''
|
|
|
451 " Use the first identifier after the "struct" or "union"
|
|
|
452 for ti in range(len(cmdtokens) - 1)
|
|
|
453 if cmdtokens[ti] =~ '^\w'
|
|
|
454 let name = cmdtokens[ti]
|
|
|
455 break
|
|
|
456 endif
|
|
|
457 endfor
|
|
|
458 if name != ''
|
|
716
|
459 call extend(res, s:StructMembers(cmdtokens[0] . ':' . name, a:items, a:all))
|
|
523
|
460 endif
|
|
654
|
461 elseif a:depth < 10
|
|
523
|
462 " Could be "typedef other_T some_T".
|
|
716
|
463 call extend(res, s:Nextitem(cmdtokens[0], a:items, a:depth + 1, a:all))
|
|
523
|
464 endif
|
|
|
465 endif
|
|
511
|
466 endif
|
|
|
467 endfor
|
|
516
|
468 if len(res) > 0
|
|
505
|
469 break
|
|
|
470 endif
|
|
516
|
471 endfor
|
|
511
|
472
|
|
516
|
473 return res
|
|
|
474 endfunction
|
|
|
475
|
|
|
476
|
|
654
|
477 " Search for members of structure "typename" in tags files.
|
|
523
|
478 " Return a list with resulting matches.
|
|
|
479 " Each match is a dictionary with "match" and "tagline" entries.
|
|
716
|
480 " When "all" is non-zero find all, otherwise just return 1 if there is any
|
|
|
481 " member.
|
|
|
482 function! s:StructMembers(typename, items, all)
|
|
516
|
483 " Todo: What about local structures?
|
|
876
|
484 let fnames = join(map(tagfiles(), 'escape(v:val, " \\#%")'))
|
|
516
|
485 if fnames == ''
|
|
523
|
486 return []
|
|
516
|
487 endif
|
|
|
488
|
|
|
489 let typename = a:typename
|
|
|
490 let qflist = []
|
|
720
|
491 let cached = 0
|
|
716
|
492 if a:all == 0
|
|
|
493 let n = '1' " stop at first found match
|
|
720
|
494 if has_key(s:grepCache, a:typename)
|
|
|
495 let qflist = s:grepCache[a:typename]
|
|
|
496 let cached = 1
|
|
|
497 endif
|
|
716
|
498 else
|
|
|
499 let n = ''
|
|
|
500 endif
|
|
720
|
501 if !cached
|
|
|
502 while 1
|
|
3682
|
503 exe 'silent! keepj noautocmd ' . n . 'vimgrep /\t' . typename . '\(\t\|$\)/j ' . fnames
|
|
720
|
504
|
|
|
505 let qflist = getqflist()
|
|
|
506 if len(qflist) > 0 || match(typename, "::") < 0
|
|
|
507 break
|
|
|
508 endif
|
|
|
509 " No match for "struct:context::name", remove "context::" and try again.
|
|
|
510 let typename = substitute(typename, ':[^:]*::', ':', '')
|
|
|
511 endwhile
|
|
|
512
|
|
|
513 if a:all == 0
|
|
|
514 " Store the result to be able to use it again later.
|
|
|
515 let s:grepCache[a:typename] = qflist
|
|
516
|
516 endif
|
|
720
|
517 endif
|
|
516
|
518
|
|
734
|
519 " Put matching members in matches[].
|
|
523
|
520 let matches = []
|
|
516
|
521 for l in qflist
|
|
|
522 let memb = matchstr(l['text'], '[^\t]*')
|
|
|
523 if memb =~ '^' . a:items[0]
|
|
734
|
524 " Skip matches local to another file.
|
|
|
525 if match(l['text'], "\tfile:") < 0 || bufnr('%') == bufnr(matchstr(l['text'], '\t\zs[^\t]*'))
|
|
|
526 let item = {'match': memb, 'tagline': l['text']}
|
|
|
527
|
|
|
528 " Add the kind of item.
|
|
|
529 let s = matchstr(l['text'], '\t\(kind:\)\=\zs\S\ze\(\t\|$\)')
|
|
|
530 if s != ''
|
|
|
531 let item['kind'] = s
|
|
|
532 if s == 'f'
|
|
|
533 let item['match'] = memb . '('
|
|
|
534 endif
|
|
|
535 endif
|
|
|
536
|
|
|
537 call add(matches, item)
|
|
|
538 endif
|
|
516
|
539 endif
|
|
511
|
540 endfor
|
|
505
|
541
|
|
523
|
542 if len(matches) > 0
|
|
654
|
543 " Skip over [...] items
|
|
|
544 let idx = 1
|
|
|
545 while 1
|
|
|
546 if idx >= len(a:items)
|
|
|
547 return matches " No further items, return the result.
|
|
|
548 endif
|
|
|
549 if a:items[idx][0] != '['
|
|
|
550 break
|
|
|
551 endif
|
|
|
552 let idx += 1
|
|
|
553 endwhile
|
|
505
|
554
|
|
511
|
555 " More items following. For each of the possible members find the
|
|
|
556 " matching following members.
|
|
716
|
557 return s:SearchMembers(matches, a:items[idx :], a:all)
|
|
511
|
558 endif
|
|
|
559
|
|
|
560 " Failed to find anything.
|
|
|
561 return []
|
|
|
562 endfunction
|
|
523
|
563
|
|
|
564 " For matching members, find matches for following items.
|
|
716
|
565 " When "all" is non-zero find all, otherwise just return 1 if there is any
|
|
|
566 " member.
|
|
|
567 function! s:SearchMembers(matches, items, all)
|
|
523
|
568 let res = []
|
|
|
569 for i in range(len(a:matches))
|
|
648
|
570 let typename = ''
|
|
|
571 if has_key(a:matches[i], 'dict')
|
|
|
572 if has_key(a:matches[i].dict, 'typename')
|
|
|
573 let typename = a:matches[i].dict['typename']
|
|
800
|
574 elseif has_key(a:matches[i].dict, 'typeref')
|
|
|
575 let typename = a:matches[i].dict['typeref']
|
|
648
|
576 endif
|
|
|
577 let line = "\t" . a:matches[i].dict['cmd']
|
|
|
578 else
|
|
|
579 let line = a:matches[i]['tagline']
|
|
|
580 let e = matchend(line, '\ttypename:')
|
|
800
|
581 if e < 0
|
|
|
582 let e = matchend(line, '\ttyperef:')
|
|
|
583 endif
|
|
648
|
584 if e > 0
|
|
|
585 " Use typename field
|
|
|
586 let typename = matchstr(line, '[^\t]*', e)
|
|
|
587 endif
|
|
|
588 endif
|
|
716
|
589
|
|
648
|
590 if typename != ''
|
|
716
|
591 call extend(res, s:StructMembers(typename, a:items, a:all))
|
|
523
|
592 else
|
|
|
593 " Use the search command (the declaration itself).
|
|
|
594 let s = match(line, '\t\zs/^')
|
|
|
595 if s > 0
|
|
648
|
596 let e = match(line, '\<' . a:matches[i]['match'] . '\>', s)
|
|
523
|
597 if e > 0
|
|
716
|
598 call extend(res, s:Nextitem(strpart(line, s, e - s), a:items, 0, a:all))
|
|
523
|
599 endif
|
|
|
600 endif
|
|
|
601 endif
|
|
716
|
602 if a:all == 0 && len(res) > 0
|
|
|
603 break
|
|
|
604 endif
|
|
523
|
605 endfor
|
|
|
606 return res
|
|
|
607 endfunc
|
|
3237
|
608
|
|
|
609 let &cpo = s:cpo_save
|
|
|
610 unlet s:cpo_save
|
