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annotate src/beval.c @ 13846:8518f28bcda9

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Added tag v8.0.1794 for changeset f22db93bd88770e35ad6a0ccdb894ca965b71043
author Christian Brabandt <cb@256bit.org>
date Sat, 05 May 2018 16:45:05 +0200
parents 8412df1479a3
children 2ad722003b36
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
12871
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1 /* vi:set ts=8 sts=4 sw=4 noet:
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2 *
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3 * VIM - Vi IMproved by Bram Moolenaar
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4 * Visual Workshop integration by Gordon Prieur
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5 *
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6 * Do ":help uganda" in Vim to read copying and usage conditions.
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7 * Do ":help credits" in Vim to see a list of people who contributed.
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8 * See README.txt for an overview of the Vim source code.
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9 */
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10
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11 #include "vim.h"
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12
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13 #if defined(FEAT_BEVAL) || defined(PROTO)
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14
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15 /*
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16 * Get the text and position to be evaluated for "beval".
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17 * If "getword" is true the returned text is not the whole line but the
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18 * relevant word in allocated memory.
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19 * Returns OK or FAIL.
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20 */
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21 int
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22 get_beval_info(
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23 BalloonEval *beval,
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24 int getword,
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25 win_T **winp,
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26 linenr_T *lnump,
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27 char_u **textp,
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28 int *colp)
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29 {
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30 win_T *wp;
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31 int row, col;
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32 char_u *lbuf;
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33 linenr_T lnum;
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34
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35 *textp = NULL;
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36 # ifdef FEAT_BEVAL_TERM
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37 # ifdef FEAT_GUI
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38 if (!gui.in_use)
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39 # endif
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40 {
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41 row = mouse_row;
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42 col = mouse_col;
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43 }
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44 # endif
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45 # ifdef FEAT_GUI
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46 if (gui.in_use)
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47 {
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48 row = Y_2_ROW(beval->y);
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49 col = X_2_COL(beval->x);
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50 }
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51 #endif
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52 wp = mouse_find_win(&row, &col);
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53 if (wp != NULL && row >= 0 && row < wp->w_height && col < wp->w_width)
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54 {
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55 /* Found a window and the cursor is in the text. Now find the line
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56 * number. */
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57 if (!mouse_comp_pos(wp, &row, &col, &lnum))
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58 {
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59 /* Not past end of the file. */
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60 lbuf = ml_get_buf(wp->w_buffer, lnum, FALSE);
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61 if (col <= win_linetabsize(wp, lbuf, (colnr_T)MAXCOL))
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62 {
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63 /* Not past end of line. */
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64 if (getword)
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65 {
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66 /* For Netbeans we get the relevant part of the line
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67 * instead of the whole line. */
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68 int len;
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69 pos_T *spos = NULL, *epos = NULL;
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70
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71 if (VIsual_active)
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72 {
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73 if (LT_POS(VIsual, curwin->w_cursor))
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74 {
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75 spos = &VIsual;
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76 epos = &curwin->w_cursor;
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77 }
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78 else
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79 {
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80 spos = &curwin->w_cursor;
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81 epos = &VIsual;
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82 }
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83 }
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84
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85 col = vcol2col(wp, lnum, col);
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86
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87 if (VIsual_active
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88 && wp->w_buffer == curwin->w_buffer
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89 && (lnum == spos->lnum
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90 ? col >= (int)spos->col
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91 : lnum > spos->lnum)
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92 && (lnum == epos->lnum
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93 ? col <= (int)epos->col
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94 : lnum < epos->lnum))
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95 {
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96 /* Visual mode and pointing to the line with the
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97 * Visual selection: return selected text, with a
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98 * maximum of one line. */
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99 if (spos->lnum != epos->lnum || spos->col == epos->col)
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100 return FAIL;
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101
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102 lbuf = ml_get_buf(curwin->w_buffer, VIsual.lnum, FALSE);
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103 len = epos->col - spos->col;
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104 if (*p_sel != 'e')
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105 len += MB_PTR2LEN(lbuf + epos->col);
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106 lbuf = vim_strnsave(lbuf + spos->col, len);
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107 lnum = spos->lnum;
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108 col = spos->col;
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109 }
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110 else
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111 {
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112 /* Find the word under the cursor. */
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113 ++emsg_off;
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114 len = find_ident_at_pos(wp, lnum, (colnr_T)col, &lbuf,
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115 FIND_IDENT + FIND_STRING + FIND_EVAL);
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116 --emsg_off;
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117 if (len == 0)
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118 return FAIL;
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119 lbuf = vim_strnsave(lbuf, len);
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120 }
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121 }
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122
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123 *winp = wp;
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124 *lnump = lnum;
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125 *textp = lbuf;
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126 *colp = col;
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127 beval->ts = wp->w_buffer->b_p_ts;
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128 return OK;
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129 }
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130 }
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131 }
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132
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133 return FAIL;
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134 }
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135
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136 /*
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137 * Show a balloon with "mesg" or "list".
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138 */
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139 void
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140 post_balloon(BalloonEval *beval UNUSED, char_u *mesg, list_T *list UNUSED)
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141 {
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142 # ifdef FEAT_BEVAL_TERM
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143 # ifdef FEAT_GUI
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144 if (!gui.in_use)
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145 # endif
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146 ui_post_balloon(mesg, list);
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147 # endif
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148 # ifdef FEAT_BEVAL_GUI
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149 if (gui.in_use)
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150 /* GUI can't handle a list */
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151 gui_mch_post_balloon(beval, mesg);
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152 # endif
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153 }
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154
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155 /*
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156 * Returns TRUE if the balloon eval has been enabled:
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157 * 'ballooneval' for the GUI and 'balloonevalterm' for the terminal.
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158 * Also checks if the screen isn't scrolled up.
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159 */
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160 int
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161 can_use_beval(void)
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162 {
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163 return (0
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164 #ifdef FEAT_BEVAL_GUI
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165 || (gui.in_use && p_beval)
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166 #endif
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167 #ifdef FEAT_BEVAL_TERM
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168 || (
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169 # ifdef FEAT_GUI
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170 !gui.in_use &&
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171 # endif
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172 p_bevalterm)
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173 #endif
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174 ) && msg_scrolled == 0;
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175 }
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176
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177 /*
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178 * Common code, invoked when the mouse is resting for a moment.
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179 */
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180 void
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181 general_beval_cb(BalloonEval *beval, int state UNUSED)
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182 {
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183 #ifdef FEAT_EVAL
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184 win_T *wp;
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185 int col;
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186 int use_sandbox;
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187 linenr_T lnum;
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188 char_u *text;
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189 static char_u *result = NULL;
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190 long winnr = 0;
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191 char_u *bexpr;
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192 buf_T *save_curbuf;
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193 size_t len;
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194 win_T *cw;
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195 #endif
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196 static int recursive = FALSE;
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197
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198 /* Don't do anything when 'ballooneval' is off, messages scrolled the
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199 * windows up or we have no beval area. */
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200 if (!can_use_beval() || beval == NULL)
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201 return;
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202
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203 /* Don't do this recursively. Happens when the expression evaluation
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204 * takes a long time and invokes something that checks for CTRL-C typed. */
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205 if (recursive)
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206 return;
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207 recursive = TRUE;
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208
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209 #ifdef FEAT_EVAL
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210 if (get_beval_info(beval, TRUE, &wp, &lnum, &text, &col) == OK)
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211 {
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212 bexpr = (*wp->w_buffer->b_p_bexpr == NUL) ? p_bexpr
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213 : wp->w_buffer->b_p_bexpr;
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214 if (*bexpr != NUL)
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215 {
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216 /* Convert window pointer to number. */
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217 for (cw = firstwin; cw != wp; cw = cw->w_next)
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218 ++winnr;
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219
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220 set_vim_var_nr(VV_BEVAL_BUFNR, (long)wp->w_buffer->b_fnum);
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221 set_vim_var_nr(VV_BEVAL_WINNR, winnr);
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222 set_vim_var_nr(VV_BEVAL_WINID, wp->w_id);
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223 set_vim_var_nr(VV_BEVAL_LNUM, (long)lnum);
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224 set_vim_var_nr(VV_BEVAL_COL, (long)(col + 1));
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225 set_vim_var_string(VV_BEVAL_TEXT, text, -1);
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226 vim_free(text);
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227
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228 /*
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229 * Temporarily change the curbuf, so that we can determine whether
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230 * the buffer-local balloonexpr option was set insecurely.
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231 */
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232 save_curbuf = curbuf;
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233 curbuf = wp->w_buffer;
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234 use_sandbox = was_set_insecurely((char_u *)"balloonexpr",
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235 *curbuf->b_p_bexpr == NUL ? 0 : OPT_LOCAL);
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236 curbuf = save_curbuf;
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237 if (use_sandbox)
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238 ++sandbox;
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239 ++textlock;
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240
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241 vim_free(result);
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242 result = eval_to_string(bexpr, NULL, TRUE);
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243
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244 /* Remove one trailing newline, it is added when the result was a
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245 * list and it's hardly ever useful. If the user really wants a
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246 * trailing newline he can add two and one remains. */
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247 if (result != NULL)
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248 {
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249 len = STRLEN(result);
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250 if (len > 0 && result[len - 1] == NL)
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251 result[len - 1] = NUL;
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252 }
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253
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254 if (use_sandbox)
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255 --sandbox;
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256 --textlock;
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257
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258 set_vim_var_string(VV_BEVAL_TEXT, NULL, -1);
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259 if (result != NULL && result[0] != NUL)
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260 {
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261 post_balloon(beval, result, NULL);
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262 recursive = FALSE;
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263 return;
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264 }
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265 }
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266 }
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267 #endif
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268 #ifdef FEAT_NETBEANS_INTG
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269 if (bevalServers & BEVAL_NETBEANS)
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270 netbeans_beval_cb(beval, state);
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271 #endif
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272 #ifdef FEAT_SUN_WORKSHOP
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273 if (bevalServers & BEVAL_WORKSHOP)
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274 workshop_beval_cb(beval, state);
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275 #endif
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276
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277 recursive = FALSE;
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278 }
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279
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280 #endif
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281