1 | /*
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2 | ** etc.c
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3 | **
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4 | ** See Copyright Notice in mruby.h
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5 | */
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6 |
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7 | #include <mruby.h>
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8 | #include <mruby/string.h>
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9 | #include <mruby/data.h>
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10 | #include <mruby/class.h>
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11 |
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12 | MRB_API struct RData*
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13 | mrb_data_object_alloc(mrb_state *mrb, struct RClass *klass, void *ptr, const mrb_data_type *type)
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14 | {
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15 | struct RData *data;
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16 |
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17 | data = (struct RData*)mrb_obj_alloc(mrb, MRB_TT_DATA, klass);
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18 | data->data = ptr;
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19 | data->type = type;
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20 |
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21 | return data;
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22 | }
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23 |
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24 | MRB_API void
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25 | mrb_data_check_type(mrb_state *mrb, mrb_value obj, const mrb_data_type *type)
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26 | {
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27 | if (!mrb_data_p(obj)) {
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28 | mrb_check_type(mrb, obj, MRB_TT_DATA);
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29 | }
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30 | if (DATA_TYPE(obj) != type) {
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31 | const mrb_data_type *t2 = DATA_TYPE(obj);
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32 |
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33 | if (t2) {
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34 | mrb_raisef(mrb, E_TYPE_ERROR, "wrong argument type %s (expected %s)",
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35 | t2->struct_name, type->struct_name);
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36 | }
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37 | else {
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38 | mrb_raisef(mrb, E_TYPE_ERROR, "uninitialized %t (expected %s)",
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39 | obj, type->struct_name);
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40 | }
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41 | }
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42 | }
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43 |
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44 | MRB_API void*
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45 | mrb_data_check_get_ptr(mrb_state *mrb, mrb_value obj, const mrb_data_type *type)
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46 | {
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47 | if (!mrb_data_p(obj)) {
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48 | return NULL;
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49 | }
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50 | if (DATA_TYPE(obj) != type) {
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51 | return NULL;
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52 | }
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53 | return DATA_PTR(obj);
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54 | }
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55 |
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56 | MRB_API void*
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57 | mrb_data_get_ptr(mrb_state *mrb, mrb_value obj, const mrb_data_type *type)
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58 | {
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59 | mrb_data_check_type(mrb, obj, type);
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60 | return DATA_PTR(obj);
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61 | }
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62 |
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63 | MRB_API mrb_sym
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64 | mrb_obj_to_sym(mrb_state *mrb, mrb_value name)
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65 | {
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66 | if (mrb_symbol_p(name)) return mrb_symbol(name);
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67 | if (mrb_string_p(name)) return mrb_intern_str(mrb, name);
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68 | mrb_raisef(mrb, E_TYPE_ERROR, "%!v is not a symbol nor a string", name);
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69 | return 0; /* not reached */
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70 | }
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71 |
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72 | MRB_API mrb_int
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73 | #ifdef MRB_WITHOUT_FLOAT
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74 | mrb_fixnum_id(mrb_int f)
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75 | #else
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76 | mrb_float_id(mrb_float f)
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77 | #endif
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78 | {
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79 | const char *p = (const char*)&f;
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80 | int len = sizeof(f);
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81 | uint32_t id = 0;
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82 |
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83 | #ifndef MRB_WITHOUT_FLOAT
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84 | /* normalize -0.0 to 0.0 */
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85 | if (f == 0) f = 0.0;
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86 | #endif
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87 | while (len--) {
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88 | id = id*65599 + *p;
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89 | p++;
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90 | }
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91 | id = id + (id>>5);
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92 |
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93 | return (mrb_int)id;
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94 | }
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95 |
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96 | MRB_API mrb_int
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97 | mrb_obj_id(mrb_value obj)
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98 | {
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99 | mrb_int tt = mrb_type(obj);
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100 |
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101 | #define MakeID2(p,t) (mrb_int)(((intptr_t)(p))^(t))
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102 | #define MakeID(p) MakeID2(p,tt)
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103 |
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104 | switch (tt) {
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105 | case MRB_TT_FREE:
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106 | case MRB_TT_UNDEF:
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107 | return MakeID(0); /* not define */
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108 | case MRB_TT_FALSE:
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109 | if (mrb_nil_p(obj))
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110 | return MakeID(1);
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111 | return MakeID(0);
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112 | case MRB_TT_TRUE:
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113 | return MakeID(1);
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114 | case MRB_TT_SYMBOL:
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115 | return MakeID(mrb_symbol(obj));
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116 | case MRB_TT_FIXNUM:
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117 | #ifdef MRB_WITHOUT_FLOAT
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118 | return MakeID(mrb_fixnum_id(mrb_fixnum(obj)));
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119 | #else
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120 | return MakeID2(mrb_float_id((mrb_float)mrb_fixnum(obj)), MRB_TT_FLOAT);
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121 | case MRB_TT_FLOAT:
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122 | return MakeID(mrb_float_id(mrb_float(obj)));
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123 | #endif
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124 | case MRB_TT_STRING:
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125 | case MRB_TT_OBJECT:
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126 | case MRB_TT_CLASS:
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127 | case MRB_TT_MODULE:
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128 | case MRB_TT_ICLASS:
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129 | case MRB_TT_SCLASS:
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130 | case MRB_TT_PROC:
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131 | case MRB_TT_ARRAY:
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132 | case MRB_TT_HASH:
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133 | case MRB_TT_RANGE:
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134 | case MRB_TT_EXCEPTION:
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135 | case MRB_TT_FILE:
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136 | case MRB_TT_DATA:
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137 | case MRB_TT_ISTRUCT:
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138 | default:
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139 | return MakeID(mrb_ptr(obj));
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140 | }
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141 | }
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142 |
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143 | #ifdef MRB_WORD_BOXING
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144 | #ifndef MRB_WITHOUT_FLOAT
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145 | MRB_API mrb_value
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146 | mrb_word_boxing_float_value(mrb_state *mrb, mrb_float f)
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147 | {
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148 | mrb_value v;
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149 |
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150 | v.value.p = mrb_obj_alloc(mrb, MRB_TT_FLOAT, mrb->float_class);
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151 | v.value.fp->f = f;
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152 | MRB_SET_FROZEN_FLAG(v.value.bp);
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153 | return v;
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154 | }
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155 |
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156 | MRB_API mrb_value
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157 | mrb_word_boxing_float_pool(mrb_state *mrb, mrb_float f)
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158 | {
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159 | struct RFloat *nf = (struct RFloat *)mrb_malloc(mrb, sizeof(struct RFloat));
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160 | nf->tt = MRB_TT_FLOAT;
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161 | nf->c = mrb->float_class;
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162 | nf->f = f;
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163 | MRB_SET_FROZEN_FLAG(nf);
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164 | return mrb_obj_value(nf);
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165 | }
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166 | #endif /* MRB_WITHOUT_FLOAT */
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167 |
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168 | MRB_API mrb_value
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169 | mrb_word_boxing_cptr_value(mrb_state *mrb, void *p)
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170 | {
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171 | mrb_value v;
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172 |
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173 | v.value.p = mrb_obj_alloc(mrb, MRB_TT_CPTR, mrb->object_class);
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174 | v.value.vp->p = p;
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175 | return v;
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176 | }
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177 | #endif /* MRB_WORD_BOXING */
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178 |
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179 | #if defined _MSC_VER && _MSC_VER < 1900
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180 |
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181 | #ifndef va_copy
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182 | static void
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183 | mrb_msvc_va_copy(va_list *dest, va_list src)
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184 | {
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185 | *dest = src;
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186 | }
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187 | #define va_copy(dest, src) mrb_msvc_va_copy(&(dest), src)
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188 | #endif
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189 |
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190 | MRB_API int
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191 | mrb_msvc_vsnprintf(char *s, size_t n, const char *format, va_list arg)
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192 | {
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193 | int cnt;
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194 | va_list argcp;
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195 | va_copy(argcp, arg);
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196 | if (n == 0 || (cnt = _vsnprintf_s(s, n, _TRUNCATE, format, argcp)) < 0) {
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197 | cnt = _vscprintf(format, arg);
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198 | }
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199 | va_end(argcp);
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200 | return cnt;
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201 | }
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202 |
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203 | MRB_API int
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204 | mrb_msvc_snprintf(char *s, size_t n, const char *format, ...)
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205 | {
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206 | va_list arg;
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207 | int ret;
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208 | va_start(arg, format);
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209 | ret = mrb_msvc_vsnprintf(s, n, format, arg);
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210 | va_end(arg);
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211 | return ret;
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212 | }
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213 |
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214 | #endif /* defined _MSC_VER && _MSC_VER < 1900 */
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