Mercurial > vim
annotate src/vim9script.c @ 20339:7587d892c00c v8.2.0725
patch 8.2.0725: Vim9: cannot call a function declared later in Vim9 script
Commit: https://github.com/vim/vim/commit/09689a02840be40fa7bb10b1921fb5bc5b2908f1
Author: Bram Moolenaar <Bram@vim.org>
Date: Sat May 9 22:50:08 2020 +0200
patch 8.2.0725: Vim9: cannot call a function declared later in Vim9 script
Problem: Vim9: cannot call a function declared later in Vim9 script.
Solution: Make two passes through the script file.
author | Bram Moolenaar <Bram@vim.org> |
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date | Sat, 09 May 2020 23:00:04 +0200 |
parents | 63cc54100ae4 |
children | 680296770464 |
rev | line source |
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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 garray_T *gap; |
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37 garray_T func_ga; |
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38 int idx; |
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39 ufunc_T *ufunc; |
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40 |
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41 if (!getline_equal(eap->getline, eap->cookie, getsourceline)) |
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42 { |
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43 emsg(_("E1038: vim9script can only be used in a script")); |
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44 return; |
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45 } |
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46 if (si->sn_had_command) |
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47 { |
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48 emsg(_("E1039: vim9script must be the first command in a script")); |
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49 return; |
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50 } |
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51 current_sctx.sc_version = SCRIPT_VERSION_VIM9; |
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52 si->sn_version = SCRIPT_VERSION_VIM9; |
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53 si->sn_had_command = TRUE; |
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54 ga_init2(&func_ga, sizeof(ufunc_T *), 20); |
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55 |
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56 if (STRCMP(p_cpo, CPO_VIM) != 0) |
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57 { |
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58 si->sn_save_cpo = p_cpo; |
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59 p_cpo = vim_strsave((char_u *)CPO_VIM); |
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60 } |
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61 |
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62 // Make a pass through the script to find: |
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63 // - function declarations |
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64 // - variable and constant declarations |
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65 // - imports |
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66 // The types are recognized, so that they can be used when compiling a |
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67 // function. |
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68 gap = source_get_line_ga(eap->cookie); |
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69 for (;;) |
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70 { |
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71 char_u *line; |
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72 char_u *p; |
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73 |
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74 if (ga_grow(gap, 1) == FAIL) |
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75 return; |
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76 line = eap->getline(':', eap->cookie, 0, TRUE); |
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77 if (line == NULL) |
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78 break; |
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79 ((char_u **)(gap->ga_data))[gap->ga_len++] = line; |
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80 line = skipwhite(line); |
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81 p = line; |
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82 if (checkforcmd(&p, "function", 2) || checkforcmd(&p, "def", 3)) |
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83 { |
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84 int lnum_start = SOURCING_LNUM - 1; |
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85 |
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86 // Handle :function and :def by calling def_function(). |
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87 // It will read upto the matching :endded or :endfunction. |
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88 eap->cmdidx = *line == 'f' ? CMD_function : CMD_def; |
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89 eap->cmd = line; |
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90 eap->arg = p; |
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91 eap->forceit = FALSE; |
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92 ufunc = def_function(eap, NULL, NULL, FALSE); |
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93 |
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94 if (ufunc != NULL && *line == 'd' && ga_grow(&func_ga, 1) == OK) |
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95 { |
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96 // Add the function to the list of :def functions, so that it |
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97 // can be referenced by index. It's compiled below. |
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98 add_def_function(ufunc); |
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99 ((ufunc_T **)(func_ga.ga_data))[func_ga.ga_len++] = ufunc; |
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100 } |
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101 |
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102 // Store empty lines in place of the function, we don't need to |
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103 // process it again. |
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104 vim_free(((char_u **)(gap->ga_data))[--gap->ga_len]); |
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105 if (ga_grow(gap, SOURCING_LNUM - lnum_start) == OK) |
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106 while (lnum_start < SOURCING_LNUM) |
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107 { |
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108 // getsourceline() will skip over NULL lines. |
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109 ((char_u **)(gap->ga_data))[gap->ga_len++] = NULL; |
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110 ++lnum_start; |
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111 } |
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112 } |
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113 else if (checkforcmd(&p, "let", 3) || checkforcmd(&p, "const", 4)) |
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114 { |
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115 eap->cmd = line; |
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116 eap->arg = p; |
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117 eap->forceit = FALSE; |
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118 eap->cmdidx = *line == 'l' ? CMD_let: CMD_const; |
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119 |
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120 // The command will be executed again, it's OK to redefine the |
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121 // variable then. |
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122 ex_let_const(eap, TRUE); |
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123 } |
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124 else if (checkforcmd(&p, "import", 3)) |
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125 { |
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126 eap->arg = p; |
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127 ex_import(eap); |
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128 |
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129 // Store empty line, we don't need to process the command again. |
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130 vim_free(((char_u **)(gap->ga_data))[--gap->ga_len]); |
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131 ((char_u **)(gap->ga_data))[gap->ga_len++] = NULL; |
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132 } |
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133 } |
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134 |
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135 // Compile the :def functions. |
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136 for (idx = 0; idx < func_ga.ga_len; ++idx) |
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137 { |
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138 ufunc = ((ufunc_T **)(func_ga.ga_data))[idx]; |
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139 compile_def_function(ufunc, FALSE, NULL); |
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140 } |
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141 ga_clear(&func_ga); |
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142 |
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143 // Return to process the commands at the script level. |
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144 source_use_line_ga(eap->cookie); |
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145 } |
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146 |
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147 /* |
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148 * ":export let Name: type" |
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149 * ":export const Name: type" |
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150 * ":export def Name(..." |
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151 * ":export class Name ..." |
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152 * |
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153 * ":export {Name, ...}" |
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154 */ |
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155 void |
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156 ex_export(exarg_T *eap) |
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157 { |
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158 if (current_sctx.sc_version != SCRIPT_VERSION_VIM9) |
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159 { |
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160 emsg(_(e_needs_vim9)); |
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161 return; |
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162 } |
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163 |
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164 eap->cmd = eap->arg; |
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165 (void)find_ex_command(eap, NULL, lookup_scriptvar, NULL); |
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166 switch (eap->cmdidx) |
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167 { |
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168 case CMD_let: |
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169 case CMD_const: |
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170 case CMD_def: |
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171 // case CMD_class: |
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172 is_export = TRUE; |
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173 do_cmdline(eap->cmd, eap->getline, eap->cookie, |
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174 DOCMD_VERBOSE + DOCMD_NOWAIT); |
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175 |
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176 // The command will reset "is_export" when exporting an item. |
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177 if (is_export) |
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178 { |
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179 emsg(_("E1044: export with invalid argument")); |
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180 is_export = FALSE; |
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181 } |
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182 break; |
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183 default: |
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184 emsg(_("E1043: Invalid command after :export")); |
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185 break; |
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186 } |
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187 } |
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188 |
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189 /* |
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190 * Add a new imported item entry to the current script. |
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191 */ |
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192 static imported_T * |
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193 new_imported(garray_T *gap) |
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194 { |
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195 if (ga_grow(gap, 1) == OK) |
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196 return ((imported_T *)gap->ga_data + gap->ga_len++); |
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197 return NULL; |
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198 } |
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199 |
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200 /* |
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201 * Free all imported items in script "sid". |
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202 */ |
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203 void |
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204 free_imports(int sid) |
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205 { |
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206 scriptitem_T *si = SCRIPT_ITEM(sid); |
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207 int idx; |
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208 |
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209 for (idx = 0; idx < si->sn_imports.ga_len; ++idx) |
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210 { |
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211 imported_T *imp = ((imported_T *)si->sn_imports.ga_data) + idx; |
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212 |
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213 vim_free(imp->imp_name); |
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214 } |
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215 ga_clear(&si->sn_imports); |
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216 ga_clear(&si->sn_var_vals); |
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217 ga_clear(&si->sn_type_list); |
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218 } |
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219 |
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220 /* |
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221 * ":import Item from 'filename'" |
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222 * ":import Item as Alias from 'filename'" |
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223 * ":import {Item} from 'filename'". |
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224 * ":import {Item as Alias} from 'filename'" |
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225 * ":import {Item, Item} from 'filename'" |
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226 * ":import {Item, Item as Alias} from 'filename'" |
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227 * |
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228 * ":import * as Name from 'filename'" |
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229 */ |
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230 void |
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231 ex_import(exarg_T *eap) |
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232 { |
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233 if (current_sctx.sc_version != SCRIPT_VERSION_VIM9) |
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234 emsg(_(e_needs_vim9)); |
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235 else |
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236 { |
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237 char_u *cmd_end = handle_import(eap->arg, NULL, |
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238 current_sctx.sc_sid, NULL); |
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239 |
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240 if (cmd_end != NULL) |
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241 eap->nextcmd = check_nextcmd(cmd_end); |
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242 } |
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243 } |
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244 |
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245 /* |
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246 * Find an exported item in "sid" matching the name at "*argp". |
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247 * When it is a variable return the index. |
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248 * When it is a user function return "*ufunc". |
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249 * When not found returns -1 and "*ufunc" is NULL. |
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250 */ |
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251 int |
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252 find_exported( |
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253 int sid, |
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254 char_u **argp, |
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255 int *name_len, |
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256 ufunc_T **ufunc, |
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257 type_T **type) |
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258 { |
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259 char_u *name = *argp; |
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260 char_u *arg = *argp; |
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261 int cc; |
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262 int idx = -1; |
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263 svar_T *sv; |
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264 scriptitem_T *script = SCRIPT_ITEM(sid); |
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265 |
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266 // isolate one name |
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267 while (eval_isnamec(*arg)) |
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268 ++arg; |
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269 *name_len = (int)(arg - name); |
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270 |
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271 // find name in "script" |
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272 // TODO: also find script-local user function |
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273 cc = *arg; |
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274 *arg = NUL; |
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275 idx = get_script_item_idx(sid, name, FALSE); |
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276 if (idx >= 0) |
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277 { |
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278 sv = ((svar_T *)script->sn_var_vals.ga_data) + idx; |
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279 if (!sv->sv_export) |
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280 { |
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281 semsg(_("E1049: Item not exported in script: %s"), name); |
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282 *arg = cc; |
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283 return -1; |
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284 } |
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285 *type = sv->sv_type; |
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286 *ufunc = NULL; |
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287 } |
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288 else |
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289 { |
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290 char_u buffer[200]; |
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291 char_u *funcname; |
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292 |
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293 // it could be a user function. |
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294 if (STRLEN(name) < sizeof(buffer) - 10) |
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295 funcname = buffer; |
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296 else |
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297 { |
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298 funcname = alloc(STRLEN(name) + 10); |
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299 if (funcname == NULL) |
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300 { |
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301 *arg = cc; |
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302 return -1; |
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303 } |
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304 } |
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305 funcname[0] = K_SPECIAL; |
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306 funcname[1] = KS_EXTRA; |
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307 funcname[2] = (int)KE_SNR; |
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308 sprintf((char *)funcname + 3, "%ld_%s", (long)sid, name); |
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309 *ufunc = find_func(funcname, FALSE, NULL); |
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310 if (funcname != buffer) |
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311 vim_free(funcname); |
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312 |
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313 if (*ufunc == NULL) |
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314 { |
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315 semsg(_("E1048: Item not found in script: %s"), name); |
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316 *arg = cc; |
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317 return -1; |
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318 } |
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319 } |
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320 *arg = cc; |
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321 arg = skipwhite(arg); |
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322 *argp = arg; |
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323 |
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324 return idx; |
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325 } |
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326 |
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327 /* |
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328 * Handle an ":import" command and add the resulting imported_T to "gap", when |
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329 * not NULL, or script "import_sid" sn_imports. |
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330 * Returns a pointer to after the command or NULL in case of failure |
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331 */ |
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332 char_u * |
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333 handle_import(char_u *arg_start, garray_T *gap, int import_sid, void *cctx) |
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334 { |
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335 char_u *arg = arg_start; |
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336 char_u *cmd_end; |
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337 char_u *as_ptr = NULL; |
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338 char_u *from_ptr; |
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339 int as_len = 0; |
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340 int ret = FAIL; |
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341 typval_T tv; |
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342 int sid = -1; |
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343 int res; |
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344 |
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345 if (*arg == '{') |
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346 { |
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347 // skip over {item} list |
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348 while (*arg != NUL && *arg != '}') |
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349 ++arg; |
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350 if (*arg == '}') |
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351 arg = skipwhite(arg + 1); |
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352 } |
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353 else |
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354 { |
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355 if (*arg == '*') |
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356 arg = skipwhite(arg + 1); |
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357 else if (eval_isnamec1(*arg)) |
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358 { |
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359 while (eval_isnamec(*arg)) |
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360 ++arg; |
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361 arg = skipwhite(arg); |
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362 } |
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363 if (STRNCMP("as", arg, 2) == 0 && VIM_ISWHITE(arg[2])) |
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364 { |
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365 // skip over "as Name " |
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366 arg = skipwhite(arg + 2); |
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367 as_ptr = arg; |
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368 if (eval_isnamec1(*arg)) |
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369 while (eval_isnamec(*arg)) |
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370 ++arg; |
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371 as_len = (int)(arg - as_ptr); |
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372 arg = skipwhite(arg); |
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373 if (check_defined(as_ptr, as_len, cctx) == FAIL) |
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374 return NULL; |
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375 } |
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376 else if (*arg_start == '*') |
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377 { |
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378 emsg(_("E1045: Missing \"as\" after *")); |
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379 return NULL; |
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380 } |
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381 } |
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382 if (STRNCMP("from", arg, 4) != 0 || !VIM_ISWHITE(arg[4])) |
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383 { |
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384 emsg(_("E1070: Missing \"from\"")); |
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385 return NULL; |
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386 } |
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387 from_ptr = arg; |
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388 arg = skipwhite(arg + 4); |
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389 tv.v_type = VAR_UNKNOWN; |
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390 // TODO: should we accept any expression? |
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391 if (*arg == '\'') |
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392 ret = get_lit_string_tv(&arg, &tv, TRUE); |
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393 else if (*arg == '"') |
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394 ret = get_string_tv(&arg, &tv, TRUE); |
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395 if (ret == FAIL || tv.vval.v_string == NULL || *tv.vval.v_string == NUL) |
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396 { |
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397 emsg(_("E1071: Invalid string after \"from\"")); |
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398 return NULL; |
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399 } |
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400 cmd_end = arg; |
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401 |
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402 // find script tv.vval.v_string |
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403 if (*tv.vval.v_string == '.') |
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404 { |
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405 size_t len; |
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406 scriptitem_T *si = SCRIPT_ITEM(current_sctx.sc_sid); |
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407 char_u *tail = gettail(si->sn_name); |
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408 char_u *from_name; |
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409 |
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410 // Relative to current script: "./name.vim", "../../name.vim". |
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411 len = STRLEN(si->sn_name) - STRLEN(tail) + STRLEN(tv.vval.v_string) + 2; |
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412 from_name = alloc((int)len); |
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413 if (from_name == NULL) |
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414 { |
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415 clear_tv(&tv); |
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416 return NULL; |
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417 } |
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418 vim_strncpy(from_name, si->sn_name, tail - si->sn_name); |
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419 add_pathsep(from_name); |
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420 STRCAT(from_name, tv.vval.v_string); |
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421 simplify_filename(from_name); |
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422 |
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423 res = do_source(from_name, FALSE, DOSO_NONE, &sid); |
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424 vim_free(from_name); |
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425 } |
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426 else if (mch_isFullName(tv.vval.v_string)) |
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427 { |
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428 // Absolute path: "/tmp/name.vim" |
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429 res = do_source(tv.vval.v_string, FALSE, DOSO_NONE, &sid); |
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430 } |
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431 else |
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432 { |
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433 size_t len = 7 + STRLEN(tv.vval.v_string) + 1; |
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434 char_u *from_name; |
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435 |
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436 // Find file in "import" subdirs in 'runtimepath'. |
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437 from_name = alloc((int)len); |
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438 if (from_name == NULL) |
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439 { |
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440 clear_tv(&tv); |
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441 return NULL; |
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442 } |
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443 vim_snprintf((char *)from_name, len, "import/%s", tv.vval.v_string); |
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444 res = source_in_path(p_rtp, from_name, DIP_NOAFTER, &sid); |
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445 vim_free(from_name); |
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446 } |
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447 |
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448 if (res == FAIL || sid <= 0) |
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449 { |
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450 semsg(_("E1053: Could not import \"%s\""), tv.vval.v_string); |
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451 clear_tv(&tv); |
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452 return NULL; |
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453 } |
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454 clear_tv(&tv); |
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455 |
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456 if (*arg_start == '*') |
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457 { |
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458 imported_T *imported = new_imported(gap != NULL ? gap |
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patch 8.2.0154: reallocating the list of scripts is inefficient
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459 : &SCRIPT_ITEM(import_sid)->sn_imports); |
19181
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460 |
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461 if (imported == NULL) |
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462 return NULL; |
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463 imported->imp_name = vim_strnsave(as_ptr, as_len); |
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464 imported->imp_sid = sid; |
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465 imported->imp_all = TRUE; |
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466 } |
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467 else |
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468 { |
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469 arg = arg_start; |
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470 if (*arg == '{') |
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471 arg = skipwhite(arg + 1); |
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472 for (;;) |
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473 { |
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474 char_u *name = arg; |
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475 int name_len; |
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476 int idx; |
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477 imported_T *imported; |
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478 ufunc_T *ufunc = NULL; |
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479 type_T *type; |
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480 |
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481 idx = find_exported(sid, &arg, &name_len, &ufunc, &type); |
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482 |
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483 if (idx < 0 && ufunc == NULL) |
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484 return NULL; |
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485 |
19623
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patch 8.2.0368: Vim9: import that redefines local variable does not fail
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486 if (check_defined(name, name_len, cctx) == FAIL) |
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487 return NULL; |
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488 |
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489 imported = new_imported(gap != NULL ? gap |
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490 : &SCRIPT_ITEM(import_sid)->sn_imports); |
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491 if (imported == NULL) |
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492 return NULL; |
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493 |
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494 // TODO: check for "as" following |
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495 // imported->imp_name = vim_strnsave(as_ptr, as_len); |
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496 imported->imp_name = vim_strnsave(name, name_len); |
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497 imported->imp_sid = sid; |
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498 if (idx >= 0) |
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499 { |
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500 imported->imp_type = type; |
19181
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501 imported->imp_var_vals_idx = idx; |
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502 } |
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503 else |
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|
504 imported->imp_funcname = ufunc->uf_name; |
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|
505 |
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|
506 arg = skipwhite(arg); |
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|
507 if (*arg_start != '{') |
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|
508 break; |
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|
509 if (*arg == '}') |
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|
510 { |
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|
511 arg = skipwhite(arg + 1); |
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|
512 break; |
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|
513 } |
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|
514 |
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|
515 if (*arg != ',') |
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|
516 { |
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|
517 emsg(_("E1046: Missing comma in import")); |
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|
518 return NULL; |
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|
519 } |
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|
520 arg = skipwhite(arg + 1); |
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|
521 } |
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|
522 if (arg != from_ptr) |
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changeset
|
523 { |
19511
7e76d5fba19f
patch 8.2.0313: Vim9: insufficient script tests
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changeset
|
524 // cannot happen, just in case the above has a flaw |
19181
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|
525 emsg(_("E1047: syntax error in import")); |
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|
526 return NULL; |
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changeset
|
527 } |
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changeset
|
528 } |
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changeset
|
529 return cmd_end; |
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changeset
|
530 } |
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changeset
|
531 |
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|
532 #endif // FEAT_EVAL |