Mercurial > repos > rhope
annotate runtime/object.c @ 56:d2f9b0a9403d
Initial experiment with goto and switch
author | Mike Pavone <pavone@retrodev.com> |
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date | Thu, 08 Oct 2009 01:52:38 -0400 |
parents | 640f541e9116 |
children | b218af069da7 |
rev | line source |
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1 #include "object.h" |
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2 #include "builtin.h" |
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3 #include <stdlib.h> |
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4 #include <string.h> |
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5 #include <stdio.h> |
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6 |
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7 blueprint ** registered_types = NULL; |
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8 uint32_t max_registered_type = 0; |
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9 uint32_t type_storage = 0; |
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10 |
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11 /* |
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12 returntype call_method(uint32_t methodid, calldata * params) |
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13 { |
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14 int i; |
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15 blueprint * bp = get_blueprint(params->params[0]); |
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16 if(methodid >= bp->first_methodid && methodid < bp->last_methodid && bp->method_lookup[methodid - bp->first_methodid]) |
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17 { |
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18 params->tail_func = bp->method_lookup[methodid - bp->first_methodid]; |
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19 return TAIL_RETURN; |
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20 } else { |
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21 if(METHOD_MISSING >= bp->first_methodid && METHOD_MISSING < bp->last_methodid && bp->method_lookup[METHOD_MISSING - bp->first_methodid]) |
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22 { |
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23 params->tail_func = bp->method_lookup[METHOD_MISSING - bp->first_methodid]; |
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24 return TAIL_RETURN; |
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25 } else { |
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26 //TODO: Add useful info to exception |
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27 for(i = 0; i < params->num_params; ++i) |
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28 release_ref(params->params[i]); |
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29 params->params[0] = new_object(TYPE_METHODMISSINGEXCEPTION); |
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30 return EXCEPTION_RETURN; |
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31 } |
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32 } |
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33 } |
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34 |
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35 returntype set_field(uint32_t setfieldid, calldata * params) |
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36 { |
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37 int i; |
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38 blueprint * bp = get_blueprint(params->params[0]); |
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39 if(setfieldid >= bp->first_setfieldid && setfieldid < bp->last_setfieldid && bp->setter_lookup[setfieldid - bp->first_setfieldid]) |
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40 { |
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41 params->tail_func = bp->setter_lookup[setfieldid - bp->first_setfieldid]; |
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42 return TAIL_RETURN; |
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43 } else { |
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44 if(METHOD_SETFIELDMISSING >= bp->first_setfieldid && METHOD_SETFIELDMISSING < bp->last_setfieldid && bp->method_lookup[METHOD_SETFIELDMISSING - bp->first_methodid]) |
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45 { |
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46 params->tail_func = bp->method_lookup[METHOD_SETFIELDMISSING - bp->first_methodid]; |
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47 params->original_methodid = setfieldid; |
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48 return TAIL_RETURN; |
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49 } else { |
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50 //TODO: Add useful info to exception |
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51 for(i = 0; i < params->num_params; ++i) |
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52 release_ref(params->params[i]); |
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53 params->params[0] = new_object(TYPE_FIELDMISSINGEXCEPTION); |
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54 return EXCEPTION_RETURN; |
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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 |
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60 returntype get_field(uint32_t getfieldid, calldata * params) |
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61 { |
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62 int i; |
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63 blueprint * bp = get_blueprint(params->params[0]); |
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64 if(getfieldid >= bp->first_getfieldid && getfieldid < bp->last_getfieldid && bp->getter_lookup[getfieldid - bp->first_getfieldid]) |
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65 { |
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66 params->tail_func = bp->getter_lookup[getfieldid - bp->first_getfieldid]; |
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67 return TAIL_RETURN; |
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68 } else { |
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69 if(METHOD_GETFIELDMISSING >= bp->first_getfieldid && METHOD_GETFIELDMISSING < bp->last_getfieldid && bp->method_lookup[METHOD_GETFIELDMISSING - bp->first_methodid]) |
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70 { |
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71 params->tail_func = bp->method_lookup[METHOD_GETFIELDMISSING - bp->first_methodid]; |
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72 params->original_methodid = getfieldid; |
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73 return TAIL_RETURN; |
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74 } else { |
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75 //TODO: Add useful info to exception |
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76 for(i = 0; i < params->num_params; ++i) |
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77 release_ref(params->params[i]); |
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78 params->params[0] = new_object(TYPE_FIELDMISSINGEXCEPTION); |
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79 return EXCEPTION_RETURN; |
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80 } |
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81 } |
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82 } |
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83 |
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84 returntype convert_to(uint32_t convertto, calldata * params) |
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85 { |
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86 int i; |
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87 blueprint * bp = get_blueprint(params->params[0]); |
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88 if(convertto >= bp->first_convertto && convertto < bp->last_convertto && bp->convert_to[convertto]) |
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89 { |
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90 params->tail_func = bp->convert_to[convertto - bp->first_convertto]; |
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91 return TAIL_RETURN; |
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92 } else { |
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93 return NO_CONVERSION; |
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94 } |
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95 } |
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96 |
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97 returntype convert_from(uint32_t convertfrom, calldata * params) |
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98 { |
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99 int i; |
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100 blueprint * bp = registered_types[convertfrom]; |
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101 if(convertfrom >= bp->first_convertfrom && convertfrom < bp->last_convertfrom && bp->convert_from[convertfrom]) |
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102 { |
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103 params->tail_func = bp->convert_from[convertfrom - bp->first_convertfrom]; |
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104 return TAIL_RETURN; |
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105 } else { |
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106 return NO_CONVERSION; |
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107 } |
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108 } |
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109 |
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110 returntype coerce_value(uint32_t type, calldata * params) |
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111 { |
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112 int i; |
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113 blueprint * bp = get_blueprint(params->params[0]); |
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114 if(bp == registered_types[type]) |
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115 return NORMAL_RETURN; |
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116 if(convert_to(type, params) == TAIL_RETURN) |
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117 return TAIL_RETURN; |
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118 if(convert_from(type, params) == TAIL_RETURN) |
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119 return TAIL_RETURN; |
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120 //TODO: Add useful info to exception |
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121 for(i = 0; i < params->num_params; ++i) |
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122 release_ref(params->params[i]); |
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123 params->params[0] = new_object(TYPE_WRONGTYPEEXCEPTION); |
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124 return EXCEPTION_RETURN; |
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125 }*/ |
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126 |
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127 object * alloc_object(blueprint * bp) |
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128 { |
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129 //TODO: Replace with something more performant |
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130 return malloc(bp->boxed_size); |
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131 } |
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132 |
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133 void * alloc_variable(uint32_t size) |
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134 { |
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135 return malloc(size); |
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136 } |
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137 |
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138 void dealloc_object(blueprint * bp, object * obj) |
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139 { |
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140 //TODO: Replace with something more performant |
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141 free(obj); |
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142 } |
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143 |
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144 object * new_object(uint32_t type) |
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145 { |
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146 blueprint * bp; |
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147 object * ret; |
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148 if(type >= max_registered_type || !registered_types[type]) |
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149 return NULL; |
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150 bp = registered_types[type]; |
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151 return new_object_bp(bp); |
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152 } |
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153 |
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154 object * new_object_bp(blueprint * bp) |
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155 { |
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156 object * ret; |
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157 ret = alloc_object(bp); |
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158 if(ret) |
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159 { |
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160 ret->bprint = bp; |
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161 rh_atomic_set(ret, refcount, 1); |
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162 memset(((char *)ret) + sizeof(object), '\0', bp->size); |
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163 bp->init(ret); |
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164 } else { |
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165 fprintf(stderr, "Could not allocate new object with size %d\n", bp->boxed_size); |
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166 } |
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167 return ret; |
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168 } |
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169 |
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170 multisize * new_multisize(uint32_t type, uint32_t size) |
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171 { |
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172 blueprint *bp; |
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173 multisize * ret; |
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174 if(type >= max_registered_type || !registered_types[type]) |
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175 return NULL; |
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176 ret = alloc_variable(sizeof(multisize) + type); |
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177 if(ret) |
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178 { |
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179 bp = registered_types[type]; |
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180 ret->base.bprint = bp; |
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181 ret->size = size; |
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182 rh_atomic_set(&(ret->base), refcount, 1); |
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183 memset(((char *)ret) + sizeof(multisize), '\0', size); |
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184 bp->init((object *)ret); |
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185 } |
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186 return ret; |
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187 } |
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188 |
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189 object * copy_object(object * tocopy) |
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190 { |
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191 object * copy; |
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192 multisize * mcopy, *mtocopy; |
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193 blueprint * bp; |
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194 if(rh_atomic_get(tocopy, refcount) == 1) |
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195 return tocopy; |
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196 bp = get_blueprint(tocopy); |
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197 if(bp->size < 0) { |
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198 mtocopy = (multisize *)tocopy; |
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199 mcopy = alloc_variable(sizeof(multisize) + mtocopy->size); |
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200 mcopy->size = mtocopy->size; |
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201 memcpy(((char *)mcopy)+sizeof(multisize), ((char *)mtocopy)+sizeof(multisize), mtocopy->size); |
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202 copy = (object *)mcopy; |
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203 } else { |
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204 copy = alloc_object(bp); |
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205 memcpy(((char *)copy) + sizeof(object), ((char *)tocopy)+sizeof(object), bp->size); |
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206 } |
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207 copy->bprint = bp; |
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208 rh_atomic_set(copy, refcount, 1); |
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209 bp->copy(copy); |
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210 release_ref(tocopy); |
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211 return copy; |
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212 } |
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213 |
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214 void free_object(object * obj) |
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215 { |
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216 blueprint * bp = get_blueprint(obj); |
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217 if(bp->cleanup) |
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218 bp->cleanup(obj); |
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219 dealloc_object(bp, obj); |
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220 } |
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221 |
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222 void release_ref(object * obj) |
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223 { |
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224 if(rh_atomic_sub_testzero(obj, refcount, 1)) |
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225 free_object(obj); |
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226 } |
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227 |
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228 void check_type_storage(type) |
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229 { |
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230 uint32_t type_storage_temp; |
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231 blueprint ** temp; |
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232 if(type >= type_storage) |
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233 if(type_storage) |
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234 { |
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235 type_storage_temp = (type + (type_storage >> 1)); |
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236 temp = realloc(registered_types, type_storage_temp * sizeof(blueprint *)); |
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237 if(temp) |
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238 { |
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239 registered_types = temp; |
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240 memset(registered_types + type_storage, '\0', (type_storage_temp - type_storage) * sizeof(blueprint *)); |
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241 type_storage = type_storage_temp; |
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242 } |
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243 else |
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244 { |
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245 free(registered_types); |
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246 fprintf(stderr, "Couldn't allocate %d bytes for type storage array\n", type_storage_temp * sizeof(blueprint *)); |
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247 exit(-1); |
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248 } |
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249 } else { |
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250 |
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251 if(type < INITIAL_TYPE_STORAGE) |
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252 type_storage =INITIAL_TYPE_STORAGE; |
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253 else |
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254 type_storage = type + 8; |
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255 registered_types = malloc(type_storage * sizeof(blueprint *)); |
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256 if(registered_types) |
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257 memset(registered_types, '\0', type_storage * sizeof(blueprint *)); |
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258 else |
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259 { |
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260 fprintf(stderr, "Couldn't allocate %d bytes for type storage array\n", type_storage * sizeof(blueprint *)); |
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261 exit(-1); |
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262 } |
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263 |
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264 } |
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265 } |
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266 |
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267 void default_action(object * obj) |
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268 { |
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269 } |
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270 |
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271 blueprint * new_blueprint(uint32_t type, uint32_t size, special_func init, special_func copy, special_func cleanup) |
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272 { |
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273 blueprint * bp = malloc(sizeof(blueprint)); |
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274 if(bp) |
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275 { |
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276 bp->size = size; |
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277 bp->boxed_size = size >= 0 ? size + sizeof(object) : size; |
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278 bp->method_lookup = bp->getter_lookup = bp->setter_lookup = bp->convert_to = bp->convert_from = NULL; |
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279 bp->type_id = type; |
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280 bp->init = init ? init : default_action; |
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281 bp->copy = copy ? copy : default_action; |
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282 bp->cleanup = cleanup ? cleanup : default_action; |
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283 bp->first_methodid = bp->last_methodid = bp->first_getfieldid = bp->last_getfieldid = bp->first_setfieldid = bp->last_setfieldid = bp->first_convertto = bp->last_convertto = bp->first_convertfrom = bp->last_convertfrom = 0; |
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284 //TODO: Handle names |
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285 bp->name = NULL; |
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286 } |
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287 return bp; |
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288 } |
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289 |
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290 blueprint * register_type_byid(uint32_t type, uint32_t size, special_func init, special_func copy, special_func cleanup) |
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291 { |
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292 check_type_storage(type); |
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293 if(registered_types[type]) |
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294 return registered_types[type]; |
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295 registered_types[type] = new_blueprint(type, size, init, copy, cleanup); |
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296 if(!registered_types[type]) |
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297 { |
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298 fputs("Couldn't allocate new object blueprint\n", stderr); |
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299 exit(-1); |
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300 } |
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301 if(type >= max_registered_type) |
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302 max_registered_type = type + 1; |
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303 return registered_types[type]; |
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304 } |
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305 |
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306 void add_method(blueprint * bp, uint32_t methodid, rhope_func impl) |
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307 { |
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308 rhope_func * temp; |
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309 if(methodid < 1) { |
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310 fputs("Attempt to add a method with an ID < 1\n", stderr); |
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311 exit(-1); |
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312 } |
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313 if (!bp->method_lookup) |
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314 { |
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315 bp->method_lookup = malloc(sizeof(rhope_func) * INITIAL_METHOD_LOOKUP); |
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316 if(!bp->method_lookup) { |
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317 fprintf(stderr, "Couldn't allocate %d bytes for method lookup table\n", sizeof(rhope_func) * INITIAL_METHOD_LOOKUP); |
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318 exit(-1); |
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319 } |
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320 if(BELOW_INITIAL_METHOD > methodid) { |
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321 bp->first_methodid = 1; |
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322 bp->last_methodid = 1+INITIAL_METHOD_LOOKUP; |
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323 } else { |
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324 bp->first_methodid = methodid - BELOW_INITIAL_METHOD; |
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325 bp->last_methodid = bp->first_methodid + INITIAL_METHOD_LOOKUP; |
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326 } |
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327 memset(bp->method_lookup, '\0', sizeof(rhope_func) * INITIAL_METHOD_LOOKUP); |
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328 } else { |
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329 if (methodid < bp->first_methodid) { |
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330 temp = bp->method_lookup; |
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331 //Note: if this gets changed to generating an exception on failure, we need to restore the original buffer |
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332 bp->method_lookup = malloc(sizeof(rhope_func) * (bp->last_methodid-methodid)); |
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333 if(!bp->method_lookup) { |
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334 fprintf(stderr, "Couldn't allocate %d bytes for method lookup table\n", sizeof(rhope_func) * (bp->last_methodid-methodid)); |
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335 exit(-1); |
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336 } |
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337 memset(bp->method_lookup, '\0', (bp->first_methodid-methodid) * sizeof(rhope_func)); |
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338 memcpy(bp->method_lookup + bp->first_methodid-methodid, temp, (bp->last_methodid-bp->first_methodid)*sizeof(rhope_func)); |
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339 free(temp); |
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340 bp->first_methodid = methodid; |
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341 } else if(methodid >= bp->last_methodid) { |
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342 //Note: if this gets changed to generating an exception on failure, we need to restore the original buffer |
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343 bp->method_lookup = realloc(bp->method_lookup, (methodid+1-bp->first_methodid) * sizeof(rhope_func)); |
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344 if(!bp->method_lookup) { |
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345 fprintf(stderr, "Couldn't resize method lookup table to %d bytes\n", (methodid+1-bp->first_methodid) * sizeof(rhope_func)); |
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346 exit(-1); |
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347 } |
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348 memset(bp->method_lookup+bp->last_methodid, '\0', (methodid+1)-bp->last_methodid); |
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349 bp->last_methodid = methodid+1; |
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350 } |
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351 } |
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352 bp->method_lookup[methodid-bp->first_methodid] = impl; |
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353 } |
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354 |
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355 void add_getter(blueprint * bp, uint32_t getfieldid, rhope_func impl) |
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356 { |
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357 rhope_func * temp; |
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358 if(getfieldid < 1) { |
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359 fputs("Attempt to add a method with an ID < 1\n", stderr); |
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360 exit(-1); |
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361 } |
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362 if (!bp->getter_lookup) |
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363 { |
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364 bp->getter_lookup = malloc(sizeof(rhope_func) * INITIAL_METHOD_LOOKUP); |
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365 if(!bp->getter_lookup) { |
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366 fprintf(stderr, "Couldn't allocate %d bytes for getter lookup table\n", sizeof(rhope_func) * INITIAL_METHOD_LOOKUP); |
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367 exit(-1); |
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368 } |
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369 if(BELOW_INITIAL_METHOD > getfieldid) { |
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370 bp->first_getfieldid = 1; |
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371 bp->last_getfieldid = 1+INITIAL_METHOD_LOOKUP; |
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372 } else { |
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373 bp->first_getfieldid = getfieldid - BELOW_INITIAL_METHOD; |
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374 bp->last_getfieldid = bp->first_getfieldid + INITIAL_METHOD_LOOKUP; |
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375 } |
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376 memset(bp->getter_lookup, '\0', sizeof(rhope_func) * INITIAL_METHOD_LOOKUP); |
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377 } else { |
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378 if (getfieldid < bp->first_getfieldid) { |
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379 temp = bp->getter_lookup; |
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380 //Note: if this gets changed to generating an exception on failure, we need to restore the original buffer |
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381 bp->getter_lookup = malloc(sizeof(rhope_func) * (bp->last_getfieldid-getfieldid)); |
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382 if(!bp->getter_lookup) { |
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383 fprintf(stderr, "Couldn't allocate %d bytes for getter lookup table\n", sizeof(rhope_func) * (bp->last_getfieldid-getfieldid)); |
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384 exit(-1); |
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385 } |
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386 memset(bp->getter_lookup, '\0', (bp->first_getfieldid-getfieldid) * sizeof(rhope_func)); |
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387 memcpy(bp->getter_lookup + bp->first_getfieldid-getfieldid, temp, (bp->last_getfieldid-bp->first_getfieldid)*sizeof(rhope_func)); |
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388 free(temp); |
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389 bp->first_getfieldid = getfieldid; |
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390 } else if(getfieldid >= bp->last_getfieldid) { |
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391 //Note: if this gets changed to generating an exception on failure, we need to restore the original buffer |
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392 bp->getter_lookup = realloc(bp->getter_lookup, (getfieldid+1-bp->first_getfieldid) * sizeof(rhope_func)); |
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393 if(!bp->getter_lookup) { |
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394 fprintf(stderr, "Couldn't resize getter lookup table to %d bytes\n", (getfieldid+1-bp->first_getfieldid) * sizeof(rhope_func)); |
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395 exit(-1); |
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396 } |
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397 memset(bp->getter_lookup+bp->last_getfieldid, '\0', (getfieldid+1)-bp->last_getfieldid); |
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398 bp->last_getfieldid = getfieldid+1; |
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399 } |
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400 } |
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401 bp->getter_lookup[getfieldid-bp->first_getfieldid] = impl; |
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402 } |
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403 |
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404 void add_setter(blueprint * bp, uint32_t setfieldid, rhope_func impl) |
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405 { |
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406 rhope_func * temp; |
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407 if(setfieldid < 1) { |
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408 fputs("Attempt to add a method with an ID < 1\n", stderr); |
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409 exit(-1); |
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410 } |
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411 if (!bp->setter_lookup) |
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412 { |
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413 bp->setter_lookup = malloc(sizeof(rhope_func) * INITIAL_METHOD_LOOKUP); |
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414 if(!bp->setter_lookup) { |
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415 fprintf(stderr, "Couldn't allocate %d bytes for setter lookup table\n", sizeof(rhope_func) * INITIAL_METHOD_LOOKUP); |
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416 exit(-1); |
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417 } |
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418 if(BELOW_INITIAL_METHOD > setfieldid) { |
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419 bp->first_setfieldid = 1; |
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420 bp->last_setfieldid = 1+INITIAL_METHOD_LOOKUP; |
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421 } else { |
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422 bp->first_setfieldid = setfieldid - BELOW_INITIAL_METHOD; |
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423 bp->last_setfieldid = bp->first_setfieldid + INITIAL_METHOD_LOOKUP; |
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424 } |
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425 memset(bp->setter_lookup, '\0', sizeof(rhope_func) * INITIAL_METHOD_LOOKUP); |
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426 } else { |
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427 if (setfieldid < bp->first_setfieldid) { |
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428 temp = bp->setter_lookup; |
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429 //Note: if this sets changed to generating an exception on failure, we need to restore the original buffer |
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430 bp->setter_lookup = malloc(sizeof(rhope_func) * (bp->last_setfieldid-setfieldid)); |
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431 if(!bp->setter_lookup) { |
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432 fprintf(stderr, "Couldn't allocate %d bytes for setter lookup table\n", sizeof(rhope_func) * (bp->last_setfieldid-setfieldid)); |
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433 exit(-1); |
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434 } |
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435 memset(bp->setter_lookup, '\0', (bp->first_setfieldid-setfieldid) * sizeof(rhope_func)); |
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436 memcpy(bp->setter_lookup + bp->first_setfieldid-setfieldid, temp, (bp->last_setfieldid-bp->first_setfieldid)*sizeof(rhope_func)); |
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437 free(temp); |
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438 bp->first_setfieldid = setfieldid; |
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439 } else if(setfieldid >= bp->last_setfieldid) { |
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440 //Note: if this sets changed to generating an exception on failure, we need to restore the original buffer |
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441 bp->setter_lookup = realloc(bp->setter_lookup, (setfieldid+1-bp->first_setfieldid) * sizeof(rhope_func)); |
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442 if(!bp->setter_lookup) { |
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443 fprintf(stderr, "Couldn't resize setter lookup table to %d bytes\n", (setfieldid+1-bp->first_setfieldid) * sizeof(rhope_func)); |
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444 exit(-1); |
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445 } |
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446 memset(bp->setter_lookup+bp->last_setfieldid, '\0', (setfieldid+1)-bp->last_setfieldid); |
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447 bp->last_setfieldid = setfieldid+1; |
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448 } |
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449 } |
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450 bp->setter_lookup[setfieldid-bp->first_setfieldid] = impl; |
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451 } |
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452 |
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453 blueprint * get_blueprint_byid(uint32_t type) |
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454 { |
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455 if(type >= max_registered_type) |
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456 return NULL; |
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457 return registered_types[type]; |
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458 } |
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459 |