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annotate runtime/indent/typescript.vim @ 18486:9d887cad7315

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Added tag v8.1.2237 for changeset 63ee3c2b140fe1b4801389872a8e47aec19d028b
author Bram Moolenaar <Bram@vim.org>
date Thu, 31 Oct 2019 20:00:04 +0100
parents 6d11fc4aa683
children 11b656e74444
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
16971
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1 " Vim indent file
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2 " Language: TypeScript
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3 " Maintainer: See https://github.com/HerringtonDarkholme/yats.vim
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4 " Last Change: 2019 Oct 18
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5 " Acknowledgement: Based off of vim-ruby maintained by Nikolai Weibull http://vim-ruby.rubyforge.org
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6
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7 " 0. Initialization {{{1
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8 " =================
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9
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10 " Only load this indent file when no other was loaded.
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11 if exists("b:did_indent")
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12 finish
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13 endif
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14 let b:did_indent = 1
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15
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16 setlocal nosmartindent
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17
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18 " Now, set up our indentation expression and keys that trigger it.
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19 setlocal indentexpr=GetTypescriptIndent()
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20 setlocal formatexpr=Fixedgq(v:lnum,v:count)
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21 setlocal indentkeys=0{,0},0),0],0\,,!^F,o,O,e
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22
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23 " Only define the function once.
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24 if exists("*GetTypescriptIndent")
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25 finish
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26 endif
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27
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28 let s:cpo_save = &cpo
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29 set cpo&vim
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30
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31 " 1. Variables {{{1
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32 " ============
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33
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34 let s:js_keywords = '^\s*\(break\|case\|catch\|continue\|debugger\|default\|delete\|do\|else\|finally\|for\|function\|if\|in\|instanceof\|new\|return\|switch\|this\|throw\|try\|typeof\|var\|void\|while\|with\)'
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35
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36 " Regex of syntax group names that are or delimit string or are comments.
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37 let s:syng_strcom = 'string\|regex\|comment\c'
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38
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39 " Regex of syntax group names that are strings.
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40 let s:syng_string = 'regex\c'
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41
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42 " Regex of syntax group names that are strings or documentation.
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43 let s:syng_multiline = 'comment\c'
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44
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45 " Regex of syntax group names that are line comment.
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46 let s:syng_linecom = 'linecomment\c'
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47
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48 " Expression used to check whether we should skip a match with searchpair().
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49 let s:skip_expr = "synIDattr(synID(line('.'),col('.'),1),'name') =~ '".s:syng_strcom."'"
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50
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51 let s:line_term = '\s*\%(\%(\/\/\).*\)\=$'
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52
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53 " Regex that defines continuation lines, not including (, {, or [.
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54 let s:continuation_regex = '\%([\\*+/.:]\|\%(<%\)\@<![=-]\|\W[|&?]\|||\|&&\|[^=]=[^=].*,\)' . s:line_term
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55
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56 " Regex that defines continuation lines.
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57 " TODO: this needs to deal with if ...: and so on
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58 let s:msl_regex = s:continuation_regex
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59
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60 let s:one_line_scope_regex = '\<\%(if\|else\|for\|while\)\>[^{;]*' . s:line_term
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61
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62 " Regex that defines blocks.
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63 let s:block_regex = '\%([{[]\)\s*\%(|\%([*@]\=\h\w*,\=\s*\)\%(,\s*[*@]\=\h\w*\)*|\)\=' . s:line_term
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64
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65 let s:var_stmt = '^\s*var'
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66
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67 let s:comma_first = '^\s*,'
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68 let s:comma_last = ',\s*$'
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69
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70 let s:ternary = '^\s\+[?|:]'
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71 let s:ternary_q = '^\s\+?'
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72
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73 " 2. Auxiliary Functions {{{1
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74 " ======================
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75
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76 " Check if the character at lnum:col is inside a string, comment, or is ascii.
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77 function s:IsInStringOrComment(lnum, col)
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78 return synIDattr(synID(a:lnum, a:col, 1), 'name') =~ s:syng_strcom
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79 endfunction
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80
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81 " Check if the character at lnum:col is inside a string.
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82 function s:IsInString(lnum, col)
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83 return synIDattr(synID(a:lnum, a:col, 1), 'name') =~ s:syng_string
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84 endfunction
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85
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86 " Check if the character at lnum:col is inside a multi-line comment.
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87 function s:IsInMultilineComment(lnum, col)
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88 return !s:IsLineComment(a:lnum, a:col) && synIDattr(synID(a:lnum, a:col, 1), 'name') =~ s:syng_multiline
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89 endfunction
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90
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91 " Check if the character at lnum:col is a line comment.
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92 function s:IsLineComment(lnum, col)
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93 return synIDattr(synID(a:lnum, a:col, 1), 'name') =~ s:syng_linecom
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94 endfunction
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95
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96 " Find line above 'lnum' that isn't empty, in a comment, or in a string.
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97 function s:PrevNonBlankNonString(lnum)
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98 let in_block = 0
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99 let lnum = prevnonblank(a:lnum)
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100 while lnum > 0
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101 " Go in and out of blocks comments as necessary.
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102 " If the line isn't empty (with opt. comment) or in a string, end search.
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103 let line = getline(lnum)
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104 if line =~ '/\*'
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105 if in_block
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106 let in_block = 0
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107 else
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108 break
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109 endif
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110 elseif !in_block && line =~ '\*/'
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111 let in_block = 1
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112 elseif !in_block && line !~ '^\s*\%(//\).*$' && !(s:IsInStringOrComment(lnum, 1) && s:IsInStringOrComment(lnum, strlen(line)))
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113 break
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114 endif
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115 let lnum = prevnonblank(lnum - 1)
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116 endwhile
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117 return lnum
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118 endfunction
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119
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120 " Find line above 'lnum' that started the continuation 'lnum' may be part of.
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121 function s:GetMSL(lnum, in_one_line_scope)
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122 " Start on the line we're at and use its indent.
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123 let msl = a:lnum
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124 let lnum = s:PrevNonBlankNonString(a:lnum - 1)
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125 while lnum > 0
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126 " If we have a continuation line, or we're in a string, use line as MSL.
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127 " Otherwise, terminate search as we have found our MSL already.
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128 let line = getline(lnum)
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129 let col = match(line, s:msl_regex) + 1
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130 if (col > 0 && !s:IsInStringOrComment(lnum, col)) || s:IsInString(lnum, strlen(line))
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131 let msl = lnum
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132 else
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133 " Don't use lines that are part of a one line scope as msl unless the
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134 " flag in_one_line_scope is set to 1
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135 "
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136 if a:in_one_line_scope
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137 break
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138 end
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139 let msl_one_line = s:Match(lnum, s:one_line_scope_regex)
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140 if msl_one_line == 0
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141 break
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142 endif
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143 endif
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144 let lnum = s:PrevNonBlankNonString(lnum - 1)
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145 endwhile
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146 return msl
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147 endfunction
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148
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149 function s:RemoveTrailingComments(content)
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150 let single = '\/\/\(.*\)\s*$'
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151 let multi = '\/\*\(.*\)\*\/\s*$'
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152 return substitute(substitute(a:content, single, '', ''), multi, '', '')
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153 endfunction
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154
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155 " Find if the string is inside var statement (but not the first string)
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156 function s:InMultiVarStatement(lnum)
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157 let lnum = s:PrevNonBlankNonString(a:lnum - 1)
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158
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159 " let type = synIDattr(synID(lnum, indent(lnum) + 1, 0), 'name')
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160
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161 " loop through previous expressions to find a var statement
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162 while lnum > 0
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163 let line = getline(lnum)
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164
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165 " if the line is a js keyword
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166 if (line =~ s:js_keywords)
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167 " check if the line is a var stmt
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168 " if the line has a comma first or comma last then we can assume that we
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169 " are in a multiple var statement
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170 if (line =~ s:var_stmt)
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171 return lnum
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172 endif
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173
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174 " other js keywords, not a var
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175 return 0
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176 endif
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177
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178 let lnum = s:PrevNonBlankNonString(lnum - 1)
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179 endwhile
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180
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181 " beginning of program, not a var
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182 return 0
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183 endfunction
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184
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185 " Find line above with beginning of the var statement or returns 0 if it's not
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186 " this statement
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187 function s:GetVarIndent(lnum)
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188 let lvar = s:InMultiVarStatement(a:lnum)
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189 let prev_lnum = s:PrevNonBlankNonString(a:lnum - 1)
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190
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191 if lvar
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192 let line = s:RemoveTrailingComments(getline(prev_lnum))
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193
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194 " if the previous line doesn't end in a comma, return to regular indent
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195 if (line !~ s:comma_last)
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196 return indent(prev_lnum) - shiftwidth()
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197 else
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198 return indent(lvar) + shiftwidth()
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199 endif
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200 endif
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201
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202 return -1
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203 endfunction
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204
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205
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206 " Check if line 'lnum' has more opening brackets than closing ones.
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207 function s:LineHasOpeningBrackets(lnum)
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208 let open_0 = 0
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209 let open_2 = 0
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210 let open_4 = 0
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211 let line = getline(a:lnum)
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212 let pos = match(line, '[][(){}]', 0)
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213 while pos != -1
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214 if !s:IsInStringOrComment(a:lnum, pos + 1)
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215 let idx = stridx('(){}[]', line[pos])
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216 if idx % 2 == 0
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217 let open_{idx} = open_{idx} + 1
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218 else
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219 let open_{idx - 1} = open_{idx - 1} - 1
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220 endif
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221 endif
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222 let pos = match(line, '[][(){}]', pos + 1)
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223 endwhile
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224 return (open_0 > 0) . (open_2 > 0) . (open_4 > 0)
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225 endfunction
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226
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227 function s:Match(lnum, regex)
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228 let col = match(getline(a:lnum), a:regex) + 1
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229 return col > 0 && !s:IsInStringOrComment(a:lnum, col) ? col : 0
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230 endfunction
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231
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232 function s:IndentWithContinuation(lnum, ind, width)
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233 " Set up variables to use and search for MSL to the previous line.
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234 let p_lnum = a:lnum
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235 let lnum = s:GetMSL(a:lnum, 1)
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236 let line = getline(lnum)
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237
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238 " If the previous line wasn't a MSL and is continuation return its indent.
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239 " TODO: the || s:IsInString() thing worries me a bit.
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240 if p_lnum != lnum
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241 if s:Match(p_lnum,s:continuation_regex)||s:IsInString(p_lnum,strlen(line))
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242 return a:ind
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243 endif
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244 endif
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245
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246 " Set up more variables now that we know we aren't continuation bound.
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247 let msl_ind = indent(lnum)
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248
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249 " If the previous line ended with [*+/.-=], start a continuation that
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250 " indents an extra level.
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251 if s:Match(lnum, s:continuation_regex)
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252 if lnum == p_lnum
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253 return msl_ind + a:width
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254 else
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255 return msl_ind
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256 endif
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257 endif
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258
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259 return a:ind
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260 endfunction
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261
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262 function s:InOneLineScope(lnum)
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263 let msl = s:GetMSL(a:lnum, 1)
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264 if msl > 0 && s:Match(msl, s:one_line_scope_regex)
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265 return msl
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266 endif
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267 return 0
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268 endfunction
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269
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270 function s:ExitingOneLineScope(lnum)
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271 let msl = s:GetMSL(a:lnum, 1)
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272 if msl > 0
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273 " if the current line is in a one line scope ..
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274 if s:Match(msl, s:one_line_scope_regex)
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275 return 0
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276 else
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277 let prev_msl = s:GetMSL(msl - 1, 1)
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278 if s:Match(prev_msl, s:one_line_scope_regex)
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279 return prev_msl
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280 endif
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281 endif
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282 endif
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283 return 0
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284 endfunction
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285
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286 " 3. GetTypescriptIndent Function {{{1
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287 " =========================
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288
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289 function GetTypescriptIndent()
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290 " 3.1. Setup {{{2
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291 " ----------
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292
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293 " Set up variables for restoring position in file. Could use v:lnum here.
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294 let vcol = col('.')
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295
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296 " 3.2. Work on the current line {{{2
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297 " -----------------------------
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298
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299 let ind = -1
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300 " Get the current line.
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301 let line = getline(v:lnum)
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302 " previous nonblank line number
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303 let prevline = prevnonblank(v:lnum - 1)
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304
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305 " If we got a closing bracket on an empty line, find its match and indent
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306 " according to it. For parentheses we indent to its column - 1, for the
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307 " others we indent to the containing line's MSL's level. Return -1 if fail.
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308 let col = matchend(line, '^\s*[],})]')
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309 if col > 0 && !s:IsInStringOrComment(v:lnum, col)
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310 call cursor(v:lnum, col)
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311
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312 let lvar = s:InMultiVarStatement(v:lnum)
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313 if lvar
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314 let prevline_contents = s:RemoveTrailingComments(getline(prevline))
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315
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316 " check for comma first
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317 if (line[col - 1] =~ ',')
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318 " if the previous line ends in comma or semicolon don't indent
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319 if (prevline_contents =~ '[;,]\s*$')
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320 return indent(s:GetMSL(line('.'), 0))
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321 " get previous line indent, if it's comma first return prevline indent
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322 elseif (prevline_contents =~ s:comma_first)
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323 return indent(prevline)
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324 " otherwise we indent 1 level
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325 else
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326 return indent(lvar) + shiftwidth()
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327 endif
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328 endif
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329 endif
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330
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331
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332 let bs = strpart('(){}[]', stridx(')}]', line[col - 1]) * 2, 2)
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333 if searchpair(escape(bs[0], '\['), '', bs[1], 'bW', s:skip_expr) > 0
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334 if line[col-1]==')' && col('.') != col('$') - 1
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335 let ind = virtcol('.')-1
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336 else
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337 let ind = indent(s:GetMSL(line('.'), 0))
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338 endif
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339 endif
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340 return ind
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341 endif
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342
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343 " If the line is comma first, dedent 1 level
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344 if (getline(prevline) =~ s:comma_first)
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345 return indent(prevline) - shiftwidth()
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346 endif
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347
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348 if (line =~ s:ternary)
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349 if (getline(prevline) =~ s:ternary_q)
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350 return indent(prevline)
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351 else
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352 return indent(prevline) + shiftwidth()
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353 endif
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354 endif
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355
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356 " If we are in a multi-line comment, cindent does the right thing.
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357 if s:IsInMultilineComment(v:lnum, 1) && !s:IsLineComment(v:lnum, 1)
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358 return cindent(v:lnum)
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359 endif
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360
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361 " Check for multiple var assignments
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362 " let var_indent = s:GetVarIndent(v:lnum)
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363 " if var_indent >= 0
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364 " return var_indent
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365 " endif
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366
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367 " 3.3. Work on the previous line. {{{2
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368 " -------------------------------
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369
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370 " If the line is empty and the previous nonblank line was a multi-line
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371 " comment, use that comment's indent. Deduct one char to account for the
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372 " space in ' */'.
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373 if line =~ '^\s*$' && s:IsInMultilineComment(prevline, 1)
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374 return indent(prevline) - 1
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375 endif
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376
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377 " Find a non-blank, non-multi-line string line above the current line.
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378 let lnum = s:PrevNonBlankNonString(v:lnum - 1)
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379
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380 " If the line is empty and inside a string, use the previous line.
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381 if line =~ '^\s*$' && lnum != prevline
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382 return indent(prevnonblank(v:lnum))
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383 endif
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384
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385 " At the start of the file use zero indent.
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386 if lnum == 0
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387 return 0
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388 endif
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389
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390 " Set up variables for current line.
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391 let line = getline(lnum)
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392 let ind = indent(lnum)
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393
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394 " If the previous line ended with a block opening, add a level of indent.
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395 if s:Match(lnum, s:block_regex)
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396 return indent(s:GetMSL(lnum, 0)) + shiftwidth()
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397 endif
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398
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399 " If the previous line contained an opening bracket, and we are still in it,
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400 " add indent depending on the bracket type.
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401 if line =~ '[[({]'
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402 let counts = s:LineHasOpeningBrackets(lnum)
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403 if counts[0] == '1' && searchpair('(', '', ')', 'bW', s:skip_expr) > 0
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404 if col('.') + 1 == col('$')
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405 return ind + shiftwidth()
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406 else
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407 return virtcol('.')
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408 endif
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409 elseif counts[1] == '1' || counts[2] == '1'
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410 return ind + shiftwidth()
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411 else
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412 call cursor(v:lnum, vcol)
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413 end
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414 endif
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415
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416 " 3.4. Work on the MSL line. {{{2
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417 " --------------------------
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418
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419 let ind_con = ind
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420 let ind = s:IndentWithContinuation(lnum, ind_con, shiftwidth())
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421
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422 " }}}2
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423 "
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424 "
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425 let ols = s:InOneLineScope(lnum)
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426 if ols > 0
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427 let ind = ind + shiftwidth()
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428 else
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429 let ols = s:ExitingOneLineScope(lnum)
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430 while ols > 0 && ind > 0
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431 let ind = ind - shiftwidth()
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432 let ols = s:InOneLineScope(ols - 1)
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433 endwhile
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434 endif
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435
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436 return ind
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437 endfunction
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438
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439 " }}}1
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440
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441 let &cpo = s:cpo_save
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442 unlet s:cpo_save
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443
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444 function! Fixedgq(lnum, count)
18456
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parents: 16971
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445 let l:tw = &tw ? &tw : 80
16971
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446
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447 let l:count = a:count
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448 let l:first_char = indent(a:lnum) + 1
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449
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450 if mode() == 'i' " gq was not pressed, but tw was set
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451 return 1
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452 endif
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453
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454 " This gq is only meant to do code with strings, not comments
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455 if s:IsLineComment(a:lnum, l:first_char) || s:IsInMultilineComment(a:lnum, l:first_char)
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456 return 1
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457 endif
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458
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459 if len(getline(a:lnum)) < l:tw && l:count == 1 " No need for gq
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460 return 1
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461 endif
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462
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463 " Put all the lines on one line and do normal spliting after that
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464 if l:count > 1
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465 while l:count > 1
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466 let l:count -= 1
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467 normal J
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468 endwhile
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469 endif
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470
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471 let l:winview = winsaveview()
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472
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473 call cursor(a:lnum, l:tw + 1)
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474 let orig_breakpoint = searchpairpos(' ', '', '\.', 'bcW', '', a:lnum)
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475 call cursor(a:lnum, l:tw + 1)
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476 let breakpoint = searchpairpos(' ', '', '\.', 'bcW', s:skip_expr, a:lnum)
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477
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478 " No need for special treatment, normal gq handles edgecases better
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479 if breakpoint[1] == orig_breakpoint[1]
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480 call winrestview(l:winview)
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481 return 1
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482 endif
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483
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484 " Try breaking after string
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485 if breakpoint[1] <= indent(a:lnum)
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486 call cursor(a:lnum, l:tw + 1)
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487 let breakpoint = searchpairpos('\.', '', ' ', 'cW', s:skip_expr, a:lnum)
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488 endif
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489
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Bram Moolenaar <Bram@vim.org>
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490
e18b1c654d09 Update runtime files - Add typescript syntax and indent.
Bram Moolenaar <Bram@vim.org>
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491 if breakpoint[1] != 0
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492 call feedkeys("r\<CR>")
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493 else
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494 let l:count = l:count - 1
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495 endif
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496
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497 " run gq on new lines
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498 if l:count == 1
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499 call feedkeys("gqq")
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500 endif
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501
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502 return 0
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503 endfunction