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annotate src/vim9.h @ 19726:ad37a198a708 v8.2.0419

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patch 8.2.0419: various memory leaks in Vim9 script code Commit: https://github.com/vim/vim/commit/20431c9dbb592ebe0666bf042af7d2b373107372 Author: Bram Moolenaar <Bram@vim.org> Date: Fri Mar 20 18:39:46 2020 +0100 patch 8.2.0419: various memory leaks in Vim9 script code Problem: Various memory leaks in Vim9 script code. Solution: Fix the leaks. (Ozaki Kiichi, closes https://github.com/vim/vim/issues/5814)
author Bram Moolenaar <Bram@vim.org>
date Fri, 20 Mar 2020 18:45:04 +0100
parents 1098989a90ee
children 846fbbacce3a
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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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 * vim9.h: types and globals used for Vim9 script.
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12 */
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13
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14 typedef enum {
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15 ISN_EXEC, // execute Ex command line isn_arg.string
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16 ISN_ECHO, // echo isn_arg.echo.echo_count items on top of stack
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17 ISN_EXECUTE, // execute Ex commands isn_arg.number items on top of stack
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18
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19 // get and set variables
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20 ISN_LOAD, // push local variable isn_arg.number
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21 ISN_LOADV, // push v: variable isn_arg.number
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22 ISN_LOADG, // push g: variable isn_arg.string
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23 ISN_LOADS, // push s: variable isn_arg.loadstore
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24 ISN_LOADSCRIPT, // push script-local variable isn_arg.script.
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25 ISN_LOADOPT, // push option isn_arg.string
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26 ISN_LOADENV, // push environment variable isn_arg.string
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27 ISN_LOADREG, // push register isn_arg.number
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28
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29 ISN_STORE, // pop into local variable isn_arg.number
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30 ISN_STOREV, // pop into v: variable isn_arg.number
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31 ISN_STOREG, // pop into global variable isn_arg.string
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32 ISN_STORES, // pop into scirpt variable isn_arg.loadstore
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33 ISN_STORESCRIPT, // pop into scirpt variable isn_arg.script
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34 ISN_STOREOPT, // pop into option isn_arg.string
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35 ISN_STOREENV, // pop into environment variable isn_arg.string
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36 ISN_STOREREG, // pop into register isn_arg.number
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37 // ISN_STOREOTHER, // pop into other script variable isn_arg.other.
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38
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39 ISN_STORENR, // store number into local variable isn_arg.storenr.stnr_idx
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40
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41 // constants
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42 ISN_PUSHNR, // push number isn_arg.number
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43 ISN_PUSHBOOL, // push bool value isn_arg.number
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44 ISN_PUSHSPEC, // push special value isn_arg.number
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45 ISN_PUSHF, // push float isn_arg.fnumber
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46 ISN_PUSHS, // push string isn_arg.string
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47 ISN_PUSHBLOB, // push blob isn_arg.blob
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48 ISN_PUSHFUNC, // push func isn_arg.string
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49 ISN_PUSHPARTIAL, // push partial ?
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50 ISN_PUSHCHANNEL, // push channel isn_arg.channel
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51 ISN_PUSHJOB, // push channel isn_arg.job
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52 ISN_NEWLIST, // push list from stack items, size is isn_arg.number
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53 ISN_NEWDICT, // push dict from stack items, size is isn_arg.number
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54
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55 // function call
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56 ISN_BCALL, // call builtin function isn_arg.bfunc
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57 ISN_DCALL, // call def function isn_arg.dfunc
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58 ISN_UCALL, // call user function or funcref/partial isn_arg.ufunc
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59 ISN_PCALL, // call partial, use isn_arg.pfunc
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60 ISN_RETURN, // return, result is on top of stack
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61 ISN_FUNCREF, // push a function ref to dfunc isn_arg.number
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62
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63 // expression operations
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64 ISN_JUMP, // jump if condition is matched isn_arg.jump
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65
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66 // loop
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67 ISN_FOR, // get next item from a list, uses isn_arg.forloop
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68
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69 ISN_TRY, // add entry to ec_trystack, uses isn_arg.try
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70 ISN_THROW, // pop value of stack, store in v:exception
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71 ISN_PUSHEXC, // push v:exception
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72 ISN_CATCH, // drop v:exception
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73 ISN_ENDTRY, // take entry off from ec_trystack
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74
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75 // moreexpression operations
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76 ISN_ADDLIST,
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77 ISN_ADDBLOB,
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78
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79 // operation with two arguments; isn_arg.op.op_type is exptype_T
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80 ISN_OPNR,
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81 ISN_OPFLOAT,
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82 ISN_OPANY,
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83
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84 // comparative operations; isn_arg.op.op_type is exptype_T, op_ic used
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85 ISN_COMPAREBOOL,
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86 ISN_COMPARESPECIAL,
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87 ISN_COMPARENR,
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88 ISN_COMPAREFLOAT,
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89 ISN_COMPARESTRING,
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90 ISN_COMPAREBLOB,
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91 ISN_COMPARELIST,
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92 ISN_COMPAREDICT,
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93 ISN_COMPAREFUNC,
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94 ISN_COMPAREPARTIAL,
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95 ISN_COMPAREANY,
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96
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97 // expression operations
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98 ISN_CONCAT,
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99 ISN_INDEX, // [expr] list index
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100 ISN_MEMBER, // dict.member using isn_arg.string
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101 ISN_2BOOL, // convert value to bool, invert if isn_arg.number != 0
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102 ISN_2STRING, // convert value to string at isn_arg.number on stack
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103 ISN_NEGATENR, // apply "-" to number
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104
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105 ISN_CHECKNR, // check value can be used as a number
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106 ISN_CHECKTYPE, // check value type is isn_arg.type.tc_type
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107
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108 ISN_DROP // pop stack and discard value
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109 } isntype_T;
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110
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111
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112 // arguments to ISN_BCALL
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113 typedef struct {
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114 int cbf_idx; // index in "global_functions"
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115 int cbf_argcount; // number of arguments on top of stack
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116 } cbfunc_T;
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117
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118 // arguments to ISN_DCALL
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119 typedef struct {
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120 int cdf_idx; // index in "def_functions" for ISN_DCALL
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121 int cdf_argcount; // number of arguments on top of stack
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122 } cdfunc_T;
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123
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124 // arguments to ISN_PCALL
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125 typedef struct {
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126 int cpf_top; // when TRUE partial is above the arguments
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127 int cpf_argcount; // number of arguments on top of stack
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128 } cpfunc_T;
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129
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130 // arguments to ISN_UCALL and ISN_XCALL
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131 typedef struct {
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132 char_u *cuf_name;
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133 int cuf_argcount; // number of arguments on top of stack
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134 } cufunc_T;
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135
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136 typedef enum {
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137 JUMP_ALWAYS,
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138 JUMP_IF_FALSE, // pop and jump if false
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139 JUMP_AND_KEEP_IF_TRUE, // jump if top of stack is true, drop if not
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140 JUMP_AND_KEEP_IF_FALSE, // jump if top of stack is false, drop if not
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141 } jumpwhen_T;
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142
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143 // arguments to ISN_JUMP
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144 typedef struct {
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145 jumpwhen_T jump_when;
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146 int jump_where; // position to jump to
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147 } jump_T;
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148
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149 // arguments to ISN_FOR
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150 typedef struct {
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151 int for_idx; // loop variable index
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152 int for_end; // position to jump to after done
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153 } forloop_T;
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154
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155 // arguments to ISN_TRY
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156 typedef struct {
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157 int try_catch; // position to jump to on throw
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158 int try_finally; // position to jump to for return
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159 } try_T;
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160
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161 // arguments to ISN_ECHO
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162 typedef struct {
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163 int echo_with_white; // :echo instead of :echon
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164 int echo_count; // number of expressions
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165 } echo_T;
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166
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167 // arguments to ISN_OPNR, ISN_OPFLOAT, etc.
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168 typedef struct {
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169 exptype_T op_type;
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170 int op_ic; // TRUE with '#', FALSE with '?', else MAYBE
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171 } opexpr_T;
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172
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173 // arguments to ISN_CHECKTYPE
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174 typedef struct {
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175 vartype_T ct_type;
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176 int ct_off; // offset in stack, -1 is bottom
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177 } checktype_T;
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178
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179 // arguments to ISN_STORENR
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180 typedef struct {
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181 int stnr_idx;
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182 varnumber_T stnr_val;
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183 } storenr_T;
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184
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185 // arguments to ISN_STOREOPT
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186 typedef struct {
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187 char_u *so_name;
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188 int so_flags;
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189 } storeopt_T;
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190
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191 // arguments to ISN_LOADS and ISN_STORES
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192 typedef struct {
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193 char_u *ls_name; // variable name
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194 int ls_sid; // script ID
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195 } loadstore_T;
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196
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197 // arguments to ISN_LOADSCRIPT and ISN_STORESCRIPT
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198 typedef struct {
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199 int script_sid; // script ID
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200 int script_idx; // index in sn_var_vals
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201 } script_T;
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202
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203 /*
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204 * Instruction
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205 */
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206 struct isn_S {
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207 isntype_T isn_type;
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208 int isn_lnum;
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209 union {
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210 char_u *string;
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211 varnumber_T number;
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212 blob_T *blob;
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213 #ifdef FEAT_FLOAT
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214 float_T fnumber;
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215 #endif
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216 channel_T *channel;
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217 job_T *job;
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218 partial_T *partial;
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219 jump_T jump;
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220 forloop_T forloop;
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221 try_T try;
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222 cbfunc_T bfunc;
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223 cdfunc_T dfunc;
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224 cpfunc_T pfunc;
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225 cufunc_T ufunc;
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226 echo_T echo;
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227 opexpr_T op;
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228 checktype_T type;
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229 storenr_T storenr;
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230 storeopt_T storeopt;
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231 loadstore_T loadstore;
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232 script_T script;
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233 } isn_arg;
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234 };
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235
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236 /*
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237 * Info about a function defined with :def. Used in "def_functions".
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238 */
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239 struct dfunc_S {
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240 ufunc_T *df_ufunc; // struct containing most stuff
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241 int df_idx; // index in def_functions
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242 int df_deleted; // if TRUE function was deleted
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243
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244 garray_T df_def_args_isn; // default argument instructions
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245 isn_T *df_instr; // function body to be executed
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246 int df_instr_count;
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247
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248 int df_varcount; // number of local variables
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249 };
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250
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251 // Number of entries used by stack frame for a function call.
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252 #define STACK_FRAME_SIZE 3
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253
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254
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255 #ifdef DEFINE_VIM9_GLOBALS
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256 // Functions defined with :def are stored in this growarray.
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257 // They are never removed, so that they can be found by index.
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258 // Deleted functions have the df_deleted flag set.
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259 garray_T def_functions = {0, 0, sizeof(dfunc_T), 50, NULL};
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260 #else
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261 extern garray_T def_functions;
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262 #endif
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