Mercurial > vim
annotate src/vim9script.c @ 19584:3aaaa407d308
Added tag v8.2.0348 for changeset ba35daca6553840791b5a4470cf24e1c3fd6cff6
author | Bram Moolenaar <Bram@vim.org> |
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date | Mon, 02 Mar 2020 23:00:06 +0100 |
parents | 7e76d5fba19f |
children | 2fee087c94cb |
rev | line source |
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19181
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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 * |
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5 * Do ":help uganda" in Vim to read copying and usage conditions. |
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6 * Do ":help credits" in Vim to see a list of people who contributed. |
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7 * See README.txt for an overview of the Vim source code. |
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8 */ |
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9 |
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10 /* |
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11 * vim9script.c: :vim9script, :import, :export and friends |
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12 */ |
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13 |
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14 #include "vim.h" |
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15 |
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16 #if defined(FEAT_EVAL) || defined(PROTO) |
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17 |
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18 #include "vim9.h" |
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19 |
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20 static char e_needs_vim9[] = N_("E1042: import/export can only be used in vim9script"); |
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21 |
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22 int |
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23 in_vim9script(void) |
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24 { |
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25 // TODO: go up the stack? |
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26 return current_sctx.sc_version == SCRIPT_VERSION_VIM9; |
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27 } |
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28 |
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29 /* |
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30 * ":vim9script". |
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31 */ |
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32 void |
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33 ex_vim9script(exarg_T *eap) |
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34 { |
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35 scriptitem_T *si = SCRIPT_ITEM(current_sctx.sc_sid); |
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36 |
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37 if (!getline_equal(eap->getline, eap->cookie, getsourceline)) |
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38 { |
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39 emsg(_("E1038: vim9script can only be used in a script")); |
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40 return; |
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41 } |
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42 if (si->sn_had_command) |
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43 { |
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44 emsg(_("E1039: vim9script must be the first command in a script")); |
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45 return; |
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46 } |
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47 current_sctx.sc_version = SCRIPT_VERSION_VIM9; |
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48 si->sn_version = SCRIPT_VERSION_VIM9; |
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49 si->sn_had_command = TRUE; |
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50 |
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51 if (STRCMP(p_cpo, CPO_VIM) != 0) |
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52 { |
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53 si->sn_save_cpo = p_cpo; |
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54 p_cpo = vim_strsave((char_u *)CPO_VIM); |
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55 } |
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56 } |
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57 |
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58 /* |
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59 * ":export let Name: type" |
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60 * ":export const Name: type" |
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61 * ":export def Name(..." |
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62 * ":export class Name ..." |
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63 * |
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64 * ":export {Name, ...}" |
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65 */ |
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66 void |
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67 ex_export(exarg_T *eap UNUSED) |
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68 { |
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69 if (current_sctx.sc_version != SCRIPT_VERSION_VIM9) |
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70 { |
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71 emsg(_(e_needs_vim9)); |
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72 return; |
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73 } |
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74 |
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75 eap->cmd = eap->arg; |
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76 (void)find_ex_command(eap, NULL, lookup_scriptvar, NULL); |
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77 switch (eap->cmdidx) |
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78 { |
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79 case CMD_let: |
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80 case CMD_const: |
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81 case CMD_def: |
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82 // case CMD_class: |
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83 is_export = TRUE; |
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84 do_cmdline(eap->cmd, eap->getline, eap->cookie, |
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85 DOCMD_VERBOSE + DOCMD_NOWAIT); |
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86 |
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87 // The command will reset "is_export" when exporting an item. |
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88 if (is_export) |
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89 { |
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90 emsg(_("E1044: export with invalid argument")); |
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91 is_export = FALSE; |
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92 } |
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93 break; |
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94 default: |
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95 emsg(_("E1043: Invalid command after :export")); |
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96 break; |
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97 } |
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98 } |
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99 |
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100 /* |
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101 * Add a new imported item entry to the current script. |
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102 */ |
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103 static imported_T * |
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104 new_imported(garray_T *gap) |
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105 { |
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106 if (ga_grow(gap, 1) == OK) |
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107 return ((imported_T *)gap->ga_data + gap->ga_len++); |
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108 return NULL; |
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109 } |
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110 |
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111 /* |
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112 * Free all imported items in script "sid". |
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113 */ |
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114 void |
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115 free_imports(int sid) |
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116 { |
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117 scriptitem_T *si = SCRIPT_ITEM(sid); |
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118 int idx; |
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119 |
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120 for (idx = 0; idx < si->sn_imports.ga_len; ++idx) |
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121 { |
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122 imported_T *imp = ((imported_T *)si->sn_imports.ga_data + idx); |
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123 |
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124 vim_free(imp->imp_name); |
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125 } |
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126 ga_clear(&si->sn_imports); |
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127 } |
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128 |
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129 /* |
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130 * ":import Item from 'filename'" |
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131 * ":import Item as Alias from 'filename'" |
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132 * ":import {Item} from 'filename'". |
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133 * ":import {Item as Alias} from 'filename'" |
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134 * ":import {Item, Item} from 'filename'" |
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135 * ":import {Item, Item as Alias} from 'filename'" |
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136 * |
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137 * ":import * as Name from 'filename'" |
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138 */ |
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139 void |
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140 ex_import(exarg_T *eap) |
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141 { |
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142 if (current_sctx.sc_version != SCRIPT_VERSION_VIM9) |
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143 emsg(_(e_needs_vim9)); |
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144 else |
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145 { |
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146 char_u *cmd_end = handle_import(eap->arg, NULL, current_sctx.sc_sid); |
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147 |
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148 if (cmd_end != NULL) |
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149 eap->nextcmd = check_nextcmd(cmd_end); |
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150 } |
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151 } |
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152 |
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153 /* |
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154 * Find an exported item in "sid" matching the name at "*argp". |
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155 * When it is a variable return the index. |
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156 * When it is a user function return "*ufunc". |
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157 * When not found returns -1 and "*ufunc" is NULL. |
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158 */ |
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159 int |
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160 find_exported( |
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161 int sid, |
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162 char_u **argp, |
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163 int *name_len, |
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164 ufunc_T **ufunc, |
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165 type_T **type) |
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166 { |
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167 char_u *name = *argp; |
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168 char_u *arg = *argp; |
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169 int cc; |
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170 int idx = -1; |
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171 svar_T *sv; |
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172 scriptitem_T *script = SCRIPT_ITEM(sid); |
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173 |
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174 // isolate one name |
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175 while (eval_isnamec(*arg)) |
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176 ++arg; |
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177 *name_len = (int)(arg - name); |
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178 |
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179 // find name in "script" |
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180 // TODO: also find script-local user function |
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181 cc = *arg; |
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182 *arg = NUL; |
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183 idx = get_script_item_idx(sid, name, FALSE); |
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184 if (idx >= 0) |
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185 { |
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186 sv = ((svar_T *)script->sn_var_vals.ga_data) + idx; |
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187 if (!sv->sv_export) |
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188 { |
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189 semsg(_("E1049: Item not exported in script: %s"), name); |
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190 *arg = cc; |
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191 return -1; |
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192 } |
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193 *type = sv->sv_type; |
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194 *ufunc = NULL; |
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195 } |
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196 else |
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197 { |
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198 char_u buffer[200]; |
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199 char_u *funcname; |
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200 |
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201 // it could be a user function. |
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202 if (STRLEN(name) < sizeof(buffer) - 10) |
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203 funcname = buffer; |
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204 else |
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205 { |
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206 funcname = alloc(STRLEN(name) + 10); |
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207 if (funcname == NULL) |
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208 { |
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209 *arg = cc; |
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210 return -1; |
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211 } |
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212 } |
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213 funcname[0] = K_SPECIAL; |
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214 funcname[1] = KS_EXTRA; |
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215 funcname[2] = (int)KE_SNR; |
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216 sprintf((char *)funcname + 3, "%ld_%s", (long)sid, name); |
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217 *ufunc = find_func(funcname, NULL); |
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218 if (funcname != buffer) |
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219 vim_free(funcname); |
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220 |
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221 if (*ufunc == NULL) |
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222 { |
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223 semsg(_("E1048: Item not found in script: %s"), name); |
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224 *arg = cc; |
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225 return -1; |
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226 } |
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227 } |
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228 *arg = cc; |
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229 arg = skipwhite(arg); |
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230 *argp = arg; |
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231 |
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232 return idx; |
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233 } |
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234 |
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235 /* |
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236 * Handle an ":import" command and add the resulting imported_T to "gap", when |
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237 * not NULL, or script "import_sid" sn_imports. |
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238 * Returns a pointer to after the command or NULL in case of failure |
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239 */ |
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240 char_u * |
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241 handle_import(char_u *arg_start, garray_T *gap, int import_sid) |
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242 { |
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243 char_u *arg = arg_start; |
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244 char_u *cmd_end; |
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245 char_u *as_ptr = NULL; |
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246 char_u *from_ptr; |
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247 int as_len = 0; |
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248 int ret = FAIL; |
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249 typval_T tv; |
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250 int sid = -1; |
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251 int res; |
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252 |
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253 if (*arg == '{') |
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254 { |
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255 // skip over {item} list |
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256 while (*arg != NUL && *arg != '}') |
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257 ++arg; |
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258 if (*arg == '}') |
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259 arg = skipwhite(arg + 1); |
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260 } |
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261 else |
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262 { |
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263 if (*arg == '*') |
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264 arg = skipwhite(arg + 1); |
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265 else if (eval_isnamec1(*arg)) |
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266 { |
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267 while (eval_isnamec(*arg)) |
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268 ++arg; |
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269 arg = skipwhite(arg); |
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270 } |
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271 if (STRNCMP("as", arg, 2) == 0 && VIM_ISWHITE(arg[2])) |
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272 { |
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273 // skip over "as Name " |
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274 arg = skipwhite(arg + 2); |
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275 as_ptr = arg; |
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276 if (eval_isnamec1(*arg)) |
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277 while (eval_isnamec(*arg)) |
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278 ++arg; |
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279 as_len = (int)(arg - as_ptr); |
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280 arg = skipwhite(arg); |
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281 } |
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282 else if (*arg_start == '*') |
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283 { |
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284 emsg(_("E1045: Missing \"as\" after *")); |
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285 return NULL; |
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286 } |
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287 } |
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288 if (STRNCMP("from", arg, 4) != 0 || !VIM_ISWHITE(arg[4])) |
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289 { |
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290 emsg(_("E1070: Missing \"from\"")); |
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291 return NULL; |
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292 } |
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293 from_ptr = arg; |
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294 arg = skipwhite(arg + 4); |
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295 tv.v_type = VAR_UNKNOWN; |
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296 // TODO: should we accept any expression? |
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297 if (*arg == '\'') |
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298 ret = get_lit_string_tv(&arg, &tv, TRUE); |
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299 else if (*arg == '"') |
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300 ret = get_string_tv(&arg, &tv, TRUE); |
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301 if (ret == FAIL || tv.vval.v_string == NULL || *tv.vval.v_string == NUL) |
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302 { |
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303 emsg(_("E1071: Invalid string after \"from\"")); |
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304 return NULL; |
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305 } |
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306 cmd_end = arg; |
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307 |
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308 // find script tv.vval.v_string |
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309 if (*tv.vval.v_string == '.') |
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310 { |
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311 size_t len; |
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312 scriptitem_T *si = SCRIPT_ITEM(current_sctx.sc_sid); |
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313 char_u *tail = gettail(si->sn_name); |
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314 char_u *from_name; |
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315 |
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316 // Relative to current script: "./name.vim", "../../name.vim". |
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317 len = STRLEN(si->sn_name) - STRLEN(tail) + STRLEN(tv.vval.v_string) + 2; |
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318 from_name = alloc((int)len); |
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319 if (from_name == NULL) |
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320 { |
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321 clear_tv(&tv); |
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322 return NULL; |
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323 } |
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324 vim_strncpy(from_name, si->sn_name, tail - si->sn_name); |
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325 add_pathsep(from_name); |
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326 STRCAT(from_name, tv.vval.v_string); |
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327 simplify_filename(from_name); |
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328 |
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329 res = do_source(from_name, FALSE, DOSO_NONE, &sid); |
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330 vim_free(from_name); |
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331 } |
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332 else if (mch_isFullName(tv.vval.v_string)) |
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333 { |
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334 // Absolute path: "/tmp/name.vim" |
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335 res = do_source(tv.vval.v_string, FALSE, DOSO_NONE, &sid); |
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336 } |
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337 else |
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338 { |
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339 size_t len = 7 + STRLEN(tv.vval.v_string) + 1; |
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340 char_u *from_name; |
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341 |
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342 // Find file in "import" subdirs in 'runtimepath'. |
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343 from_name = alloc((int)len); |
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344 if (from_name == NULL) |
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345 { |
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346 clear_tv(&tv); |
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347 return NULL; |
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348 } |
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349 vim_snprintf((char *)from_name, len, "import/%s", tv.vval.v_string); |
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350 res = source_in_path(p_rtp, from_name, DIP_NOAFTER, &sid); |
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351 vim_free(from_name); |
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352 } |
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353 |
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354 if (res == FAIL || sid <= 0) |
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355 { |
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356 semsg(_("E1053: Could not import \"%s\""), tv.vval.v_string); |
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357 clear_tv(&tv); |
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358 return NULL; |
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359 } |
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360 clear_tv(&tv); |
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361 |
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362 if (*arg_start == '*') |
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363 { |
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364 imported_T *imported = new_imported(gap != NULL ? gap |
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365 : &SCRIPT_ITEM(import_sid)->sn_imports); |
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366 |
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367 if (imported == NULL) |
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368 return NULL; |
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369 imported->imp_name = vim_strnsave(as_ptr, as_len); |
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370 imported->imp_sid = sid; |
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371 imported->imp_all = TRUE; |
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372 } |
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373 else |
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374 { |
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375 arg = arg_start; |
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376 if (*arg == '{') |
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377 arg = skipwhite(arg + 1); |
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378 for (;;) |
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379 { |
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380 char_u *name = arg; |
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381 int name_len; |
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382 int idx; |
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383 imported_T *imported; |
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384 ufunc_T *ufunc = NULL; |
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385 type_T *type; |
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386 |
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387 idx = find_exported(sid, &arg, &name_len, &ufunc, &type); |
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388 |
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389 if (idx < 0 && ufunc == NULL) |
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390 return NULL; |
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391 |
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392 imported = new_imported(gap != NULL ? gap |
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393 : &SCRIPT_ITEM(import_sid)->sn_imports); |
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394 if (imported == NULL) |
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395 return NULL; |
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396 |
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397 // TODO: check for "as" following |
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398 // imported->imp_name = vim_strnsave(as_ptr, as_len); |
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399 imported->imp_name = vim_strnsave(name, name_len); |
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400 imported->imp_sid = sid; |
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401 if (idx >= 0) |
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402 { |
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403 imported->imp_type = type; |
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404 imported->imp_var_vals_idx = idx; |
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405 } |
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406 else |
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407 imported->imp_funcname = ufunc->uf_name; |
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408 |
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409 arg = skipwhite(arg); |
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410 if (*arg_start != '{') |
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411 break; |
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412 if (*arg == '}') |
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413 { |
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414 arg = skipwhite(arg + 1); |
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415 break; |
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416 } |
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417 |
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418 if (*arg != ',') |
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419 { |
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420 emsg(_("E1046: Missing comma in import")); |
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421 return NULL; |
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422 } |
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423 arg = skipwhite(arg + 1); |
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424 } |
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425 if (arg != from_ptr) |
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426 { |
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427 // cannot happen, just in case the above has a flaw |
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428 emsg(_("E1047: syntax error in import")); |
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429 return NULL; |
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430 } |
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431 } |
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432 return cmd_end; |
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433 } |
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434 |
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435 #endif // FEAT_EVAL |