1 | ########################
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2 | # IDL Parse::Yapp parser
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3 | # Copyright (C) Andrew Tridgell <tridge@samba.org>
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4 | # released under the GNU GPL version 3 or later
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5 |
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6 |
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7 |
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8 | # the precedence actually doesn't matter at all for this grammar, but
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9 | # by providing a precedence we reduce the number of conflicts
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10 | # enormously
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11 | %left '-' '+' '&' '|' '*' '>' '.' '/' '(' ')' '[' ',' ';'
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12 |
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13 |
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14 | ################
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15 | # grammar
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16 | %%
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17 | idl:
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18 | #empty { {} }
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19 | |
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20 | idl interface { push(@{$_[1]}, $_[2]); $_[1] }
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21 | |
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22 | idl coclass { push(@{$_[1]}, $_[2]); $_[1] }
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23 | |
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24 | idl import { push(@{$_[1]}, $_[2]); $_[1] }
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25 | |
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26 | idl include { push(@{$_[1]}, $_[2]); $_[1] }
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27 | |
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28 | idl importlib { push(@{$_[1]}, $_[2]); $_[1] }
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29 | |
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30 | idl cpp_quote { push(@{$_[1]}, $_[2]); $_[1] }
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31 | ;
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32 |
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33 | import:
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34 | 'import' commalist ';'
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35 | {{
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36 | "TYPE" => "IMPORT",
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37 | "PATHS" => $_[2],
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38 | "FILE" => $_[0]->YYData->{FILE},
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39 | "LINE" => $_[0]->YYData->{LINE},
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40 | }}
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41 | ;
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42 |
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43 | include:
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44 | 'include' commalist ';'
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45 | {{
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46 | "TYPE" => "INCLUDE",
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47 | "PATHS" => $_[2],
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48 | "FILE" => $_[0]->YYData->{FILE},
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49 | "LINE" => $_[0]->YYData->{LINE},
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50 | }}
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51 | ;
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52 |
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53 | importlib:
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54 | 'importlib' commalist ';'
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55 | {{
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56 | "TYPE" => "IMPORTLIB",
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57 | "PATHS" => $_[2],
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58 | "FILE" => $_[0]->YYData->{FILE},
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59 | "LINE" => $_[0]->YYData->{LINE},
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60 | }}
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61 | ;
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62 |
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63 | commalist:
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64 | text { [ $_[1] ] }
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65 | |
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66 | commalist ',' text { push(@{$_[1]}, $_[3]); $_[1] }
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67 | ;
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68 |
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69 | coclass:
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70 | property_list 'coclass' identifier '{' interface_names '}' optional_semicolon
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71 | {{
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72 | "TYPE" => "COCLASS",
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73 | "PROPERTIES" => $_[1],
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74 | "NAME" => $_[3],
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75 | "DATA" => $_[5],
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76 | "FILE" => $_[0]->YYData->{FILE},
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77 | "LINE" => $_[0]->YYData->{LINE},
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78 | }}
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79 | ;
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80 |
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81 | interface_names:
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82 | #empty { {} }
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83 | |
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84 | interface_names 'interface' identifier ';' { push(@{$_[1]}, $_[2]); $_[1] }
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85 | ;
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86 |
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87 | interface:
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88 | property_list 'interface' identifier base_interface '{' definitions '}' optional_semicolon
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89 | {{
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90 | "TYPE" => "INTERFACE",
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91 | "PROPERTIES" => $_[1],
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92 | "NAME" => $_[3],
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93 | "BASE" => $_[4],
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94 | "DATA" => $_[6],
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95 | "FILE" => $_[0]->YYData->{FILE},
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96 | "LINE" => $_[0]->YYData->{LINE},
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97 | }}
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98 | ;
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99 |
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100 | base_interface:
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101 | #empty
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102 | |
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103 | ':' identifier { $_[2] }
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104 | ;
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105 |
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106 |
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107 | cpp_quote:
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108 | 'cpp_quote' '(' text ')'
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109 | {{
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110 | "TYPE" => "CPP_QUOTE",
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111 | "DATA" => $_[3],
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112 | "FILE" => $_[0]->YYData->{FILE},
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113 | "LINE" => $_[0]->YYData->{LINE},
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114 | }}
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115 | ;
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116 |
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117 | definitions:
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118 | definition { [ $_[1] ] }
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119 | |
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120 | definitions definition { push(@{$_[1]}, $_[2]); $_[1] }
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121 | ;
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122 |
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123 | definition:
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124 | function
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125 | |
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126 | const
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127 | |
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128 | typedef
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129 | |
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130 | typedecl
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131 | ;
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132 |
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133 | const:
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134 | 'const' identifier pointers identifier '=' anytext ';'
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135 | {{
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136 | "TYPE" => "CONST",
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137 | "DTYPE" => $_[2],
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138 | "POINTERS" => $_[3],
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139 | "NAME" => $_[4],
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140 | "VALUE" => $_[6],
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141 | "FILE" => $_[0]->YYData->{FILE},
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142 | "LINE" => $_[0]->YYData->{LINE},
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143 | }}
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144 | |
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145 | 'const' identifier pointers identifier array_len '=' anytext ';'
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146 | {{
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147 | "TYPE" => "CONST",
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148 | "DTYPE" => $_[2],
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149 | "POINTERS" => $_[3],
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150 | "NAME" => $_[4],
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151 | "ARRAY_LEN" => $_[5],
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152 | "VALUE" => $_[7],
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153 | "FILE" => $_[0]->YYData->{FILE},
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154 | "LINE" => $_[0]->YYData->{LINE},
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155 | }}
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156 | ;
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157 |
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158 | function:
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159 | property_list type identifier '(' element_list2 ')' ';'
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160 | {{
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161 | "TYPE" => "FUNCTION",
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162 | "NAME" => $_[3],
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163 | "RETURN_TYPE" => $_[2],
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164 | "PROPERTIES" => $_[1],
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165 | "ELEMENTS" => $_[5],
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166 | "FILE" => $_[0]->YYData->{FILE},
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167 | "LINE" => $_[0]->YYData->{LINE},
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168 | }}
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169 | ;
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170 |
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171 | typedef:
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172 | property_list 'typedef' type pointers identifier array_len ';'
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173 | {{
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174 | "TYPE" => "TYPEDEF",
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175 | "PROPERTIES" => $_[1],
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176 | "NAME" => $_[5],
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177 | "DATA" => $_[3],
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178 | "POINTERS" => $_[4],
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179 | "ARRAY_LEN" => $_[6],
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180 | "FILE" => $_[0]->YYData->{FILE},
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181 | "LINE" => $_[0]->YYData->{LINE},
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182 | }}
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183 | ;
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184 |
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185 | usertype:
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186 | struct
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187 | |
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188 | union
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189 | |
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190 | enum
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191 | |
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192 | bitmap
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193 | |
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194 | pipe
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195 | ;
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196 |
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197 | typedecl:
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198 | usertype ';' { $_[1] }
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199 | ;
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200 |
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201 | sign:
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202 | 'signed'
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203 | |
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204 | 'unsigned'
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205 | ;
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206 |
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207 | existingtype:
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208 | sign identifier { ($_[1]?$_[1]:"signed") ." $_[2]" }
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209 | |
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210 | identifier
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211 | ;
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212 |
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213 | type:
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214 | usertype
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215 | |
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216 | existingtype
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217 | |
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218 | void { "void" }
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219 | ;
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220 |
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221 | enum_body:
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222 | '{' enum_elements '}' { $_[2] }
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223 | ;
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224 |
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225 | opt_enum_body:
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226 | #empty
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227 | |
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228 | enum_body
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229 | ;
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230 |
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231 | enum:
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232 | property_list 'enum' optional_identifier opt_enum_body
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233 | {{
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234 | "TYPE" => "ENUM",
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235 | "PROPERTIES" => $_[1],
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236 | "NAME" => $_[3],
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237 | "ELEMENTS" => $_[4],
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238 | "FILE" => $_[0]->YYData->{FILE},
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239 | "LINE" => $_[0]->YYData->{LINE},
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240 | }}
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241 | ;
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242 |
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243 | enum_elements:
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244 | enum_element { [ $_[1] ] }
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245 | |
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246 | enum_elements ',' enum_element { push(@{$_[1]}, $_[3]); $_[1] }
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247 | ;
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248 |
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249 | enum_element:
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250 | identifier
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251 | |
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252 | identifier '=' anytext { "$_[1]$_[2]$_[3]" }
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253 | ;
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254 |
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255 | bitmap_body:
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256 | '{' opt_bitmap_elements '}' { $_[2] }
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257 | ;
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258 |
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259 | opt_bitmap_body:
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260 | #empty
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261 | |
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262 | bitmap_body
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263 | ;
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264 |
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265 | bitmap:
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266 | property_list 'bitmap' optional_identifier opt_bitmap_body
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267 | {{
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268 | "TYPE" => "BITMAP",
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269 | "PROPERTIES" => $_[1],
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270 | "NAME" => $_[3],
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271 | "ELEMENTS" => $_[4],
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272 | "FILE" => $_[0]->YYData->{FILE},
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273 | "LINE" => $_[0]->YYData->{LINE},
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274 | }}
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275 | ;
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276 |
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277 | bitmap_elements:
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278 | bitmap_element { [ $_[1] ] }
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279 | |
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280 | bitmap_elements ',' bitmap_element { push(@{$_[1]}, $_[3]); $_[1] }
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281 | ;
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282 |
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283 | opt_bitmap_elements:
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284 | #empty
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285 | |
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286 | bitmap_elements
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287 | ;
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288 |
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289 | bitmap_element:
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290 | identifier '=' anytext { "$_[1] ( $_[3] )" }
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291 | ;
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292 |
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293 | struct_body:
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294 | '{' element_list1 '}' { $_[2] }
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295 | ;
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296 |
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297 | opt_struct_body:
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298 | #empty
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299 | |
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300 | struct_body
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301 | ;
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302 |
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303 | struct:
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304 | property_list 'struct' optional_identifier opt_struct_body
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305 | {{
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306 | "TYPE" => "STRUCT",
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307 | "PROPERTIES" => $_[1],
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308 | "NAME" => $_[3],
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309 | "ELEMENTS" => $_[4],
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310 | "FILE" => $_[0]->YYData->{FILE},
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311 | "LINE" => $_[0]->YYData->{LINE},
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312 | }}
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313 | ;
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314 |
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315 | empty_element:
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316 | property_list ';'
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317 | {{
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318 | "NAME" => "",
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319 | "TYPE" => "EMPTY",
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320 | "PROPERTIES" => $_[1],
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321 | "POINTERS" => 0,
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322 | "ARRAY_LEN" => [],
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323 | "FILE" => $_[0]->YYData->{FILE},
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324 | "LINE" => $_[0]->YYData->{LINE},
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325 | }}
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326 | ;
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327 |
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328 | base_or_empty:
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329 | base_element ';'
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330 | |
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331 | empty_element;
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332 |
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333 | optional_base_element:
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334 | property_list base_or_empty { $_[2]->{PROPERTIES} = FlattenHash([$_[1],$_[2]->{PROPERTIES}]); $_[2] }
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335 | ;
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336 |
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337 | union_elements:
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338 | #empty
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339 | |
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340 | union_elements optional_base_element { push(@{$_[1]}, $_[2]); $_[1] }
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341 | ;
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342 |
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343 | union_body:
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344 | '{' union_elements '}' { $_[2] }
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345 | ;
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346 |
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347 | opt_union_body:
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348 | #empty
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349 | |
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350 | union_body
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351 | ;
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352 |
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353 | union:
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354 | property_list 'union' optional_identifier opt_union_body
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355 | {{
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356 | "TYPE" => "UNION",
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357 | "PROPERTIES" => $_[1],
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358 | "NAME" => $_[3],
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359 | "ELEMENTS" => $_[4],
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360 | "FILE" => $_[0]->YYData->{FILE},
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361 | "LINE" => $_[0]->YYData->{LINE},
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362 | }}
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363 | ;
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364 |
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365 | base_element:
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366 | property_list type pointers identifier array_len
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367 | {{
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368 | "NAME" => $_[4],
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369 | "TYPE" => $_[2],
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370 | "PROPERTIES" => $_[1],
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371 | "POINTERS" => $_[3],
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372 | "ARRAY_LEN" => $_[5],
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373 | "FILE" => $_[0]->YYData->{FILE},
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374 | "LINE" => $_[0]->YYData->{LINE},
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375 | }}
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376 | ;
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377 |
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378 | pointers:
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379 | #empty
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380 | { 0 }
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381 | |
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382 | pointers '*' { $_[1]+1 }
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383 | ;
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384 |
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385 | pipe:
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386 | property_list 'pipe' type
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387 | {{
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388 | "TYPE" => "PIPE",
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389 | "PROPERTIES" => $_[1],
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390 | "NAME" => undef,
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391 | "DATA" => {
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392 | "TYPE" => "STRUCT",
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393 | "PROPERTIES" => $_[1],
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394 | "NAME" => undef,
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395 | "ELEMENTS" => [{
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396 | "NAME" => "count",
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397 | "PROPERTIES" => $_[1],
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398 | "POINTERS" => 0,
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399 | "ARRAY_LEN" => [],
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400 | "TYPE" => "uint3264",
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401 | "FILE" => $_[0]->YYData->{FILE},
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402 | "LINE" => $_[0]->YYData->{LINE},
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403 | },{
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404 | "NAME" => "array",
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405 | "PROPERTIES" => $_[1],
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406 | "POINTERS" => 0,
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407 | "ARRAY_LEN" => [ "count" ],
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408 | "TYPE" => $_[3],
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409 | "FILE" => $_[0]->YYData->{FILE},
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410 | "LINE" => $_[0]->YYData->{LINE},
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411 | }],
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412 | "FILE" => $_[0]->YYData->{FILE},
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413 | "LINE" => $_[0]->YYData->{LINE},
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414 | },
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415 | "FILE" => $_[0]->YYData->{FILE},
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416 | "LINE" => $_[0]->YYData->{LINE},
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417 | }}
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418 | ;
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419 |
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420 | element_list1:
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421 | #empty
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422 | { [] }
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423 | |
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424 | element_list1 base_element ';' { push(@{$_[1]}, $_[2]); $_[1] }
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425 | ;
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426 |
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427 | optional_const:
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428 | #empty
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429 | |
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430 | 'const'
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431 | ;
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432 |
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433 | element_list2:
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434 | #empty
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435 | |
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436 | 'void'
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437 | |
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438 | optional_const base_element { [ $_[2] ] }
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439 | |
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440 | element_list2 ',' optional_const base_element { push(@{$_[1]}, $_[4]); $_[1] }
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441 | ;
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442 |
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443 | array_len:
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444 | #empty { [] }
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445 | |
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446 | '[' ']' array_len { push(@{$_[3]}, "*"); $_[3] }
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447 | |
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448 | '[' anytext ']' array_len { push(@{$_[4]}, "$_[2]"); $_[4] }
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449 | ;
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450 |
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451 | property_list:
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452 | #empty
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453 | |
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454 | property_list '[' properties ']' { FlattenHash([$_[1],$_[3]]); }
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455 | ;
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456 |
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457 | properties:
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458 | property { $_[1] }
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459 | |
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460 | properties ',' property { FlattenHash([$_[1], $_[3]]); }
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461 | ;
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462 |
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463 | property:
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464 | identifier {{ "$_[1]" => "1" }}
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465 | |
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466 | identifier '(' commalisttext ')' {{ "$_[1]" => "$_[3]" }}
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467 | ;
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468 |
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469 | commalisttext:
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470 | anytext
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471 | |
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472 | commalisttext ',' anytext { "$_[1],$_[3]" }
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473 | ;
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474 |
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475 | anytext:
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476 | #empty
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477 | { "" }
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478 | |
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479 | identifier
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480 | |
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481 | constant
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482 | |
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483 | text
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484 | |
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485 | anytext '-' anytext { "$_[1]$_[2]$_[3]" }
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486 | |
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487 | anytext '.' anytext { "$_[1]$_[2]$_[3]" }
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488 | |
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489 | anytext '*' anytext { "$_[1]$_[2]$_[3]" }
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490 | |
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491 | anytext '>' anytext { "$_[1]$_[2]$_[3]" }
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492 | |
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493 | anytext '<' anytext { "$_[1]$_[2]$_[3]" }
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494 | |
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495 | anytext '|' anytext { "$_[1]$_[2]$_[3]" }
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496 | |
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497 | anytext '&' anytext { "$_[1]$_[2]$_[3]" }
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498 | |
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499 | anytext '/' anytext { "$_[1]$_[2]$_[3]" }
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500 | |
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501 | anytext '?' anytext { "$_[1]$_[2]$_[3]" }
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502 | |
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503 | anytext ':' anytext { "$_[1]$_[2]$_[3]" }
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504 | |
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505 | anytext '=' anytext { "$_[1]$_[2]$_[3]" }
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506 | |
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507 | anytext '+' anytext { "$_[1]$_[2]$_[3]" }
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508 | |
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509 | anytext '~' anytext { "$_[1]$_[2]$_[3]" }
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510 | |
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511 | anytext '(' commalisttext ')' anytext { "$_[1]$_[2]$_[3]$_[4]$_[5]" }
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512 | |
|
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513 | anytext '{' commalisttext '}' anytext { "$_[1]$_[2]$_[3]$_[4]$_[5]" }
|
---|
514 | ;
|
---|
515 |
|
---|
516 | identifier:
|
---|
517 | IDENTIFIER
|
---|
518 | ;
|
---|
519 |
|
---|
520 | optional_identifier:
|
---|
521 | #empty { undef }
|
---|
522 | |
|
---|
523 | IDENTIFIER
|
---|
524 | ;
|
---|
525 |
|
---|
526 | constant:
|
---|
527 | CONSTANT
|
---|
528 | ;
|
---|
529 |
|
---|
530 | text:
|
---|
531 | TEXT { "\"$_[1]\"" }
|
---|
532 | ;
|
---|
533 |
|
---|
534 | optional_semicolon:
|
---|
535 | #empty
|
---|
536 | |
|
---|
537 | ';'
|
---|
538 | ;
|
---|
539 |
|
---|
540 |
|
---|
541 | #####################################
|
---|
542 | # start code
|
---|
543 | %%
|
---|
544 |
|
---|
545 | use Parse::Pidl qw(error);
|
---|
546 |
|
---|
547 | #####################################################################
|
---|
548 | # flatten an array of hashes into a single hash
|
---|
549 | sub FlattenHash($)
|
---|
550 | {
|
---|
551 | my $a = shift;
|
---|
552 | my %b;
|
---|
553 | for my $d (@{$a}) {
|
---|
554 | for my $k (keys %{$d}) {
|
---|
555 | $b{$k} = $d->{$k};
|
---|
556 | }
|
---|
557 | }
|
---|
558 | return \%b;
|
---|
559 | }
|
---|
560 |
|
---|
561 | #####################################################################
|
---|
562 | # traverse a perl data structure removing any empty arrays or
|
---|
563 | # hashes and any hash elements that map to undef
|
---|
564 | sub CleanData($)
|
---|
565 | {
|
---|
566 | sub CleanData($);
|
---|
567 | my($v) = shift;
|
---|
568 |
|
---|
569 | return undef if (not defined($v));
|
---|
570 |
|
---|
571 | if (ref($v) eq "ARRAY") {
|
---|
572 | foreach my $i (0 .. $#{$v}) {
|
---|
573 | CleanData($v->[$i]);
|
---|
574 | }
|
---|
575 | # this removes any undefined elements from the array
|
---|
576 | @{$v} = grep { defined $_ } @{$v};
|
---|
577 | } elsif (ref($v) eq "HASH") {
|
---|
578 | foreach my $x (keys %{$v}) {
|
---|
579 | CleanData($v->{$x});
|
---|
580 | if (!defined $v->{$x}) {
|
---|
581 | delete($v->{$x});
|
---|
582 | next;
|
---|
583 | }
|
---|
584 | }
|
---|
585 | }
|
---|
586 |
|
---|
587 | return $v;
|
---|
588 | }
|
---|
589 |
|
---|
590 | sub _Error {
|
---|
591 | if (exists $_[0]->YYData->{ERRMSG}) {
|
---|
592 | error($_[0]->YYData, $_[0]->YYData->{ERRMSG});
|
---|
593 | delete $_[0]->YYData->{ERRMSG};
|
---|
594 | return;
|
---|
595 | }
|
---|
596 |
|
---|
597 | my $last_token = $_[0]->YYData->{LAST_TOKEN};
|
---|
598 |
|
---|
599 | error($_[0]->YYData, "Syntax error near '$last_token'");
|
---|
600 | }
|
---|
601 |
|
---|
602 | sub _Lexer($)
|
---|
603 | {
|
---|
604 | my($parser)=shift;
|
---|
605 |
|
---|
606 | $parser->YYData->{INPUT} or return('',undef);
|
---|
607 |
|
---|
608 | again:
|
---|
609 | $parser->YYData->{INPUT} =~ s/^[ \t]*//;
|
---|
610 |
|
---|
611 | for ($parser->YYData->{INPUT}) {
|
---|
612 | if (/^\#/) {
|
---|
613 | # Linemarker format is described at
|
---|
614 | # http://gcc.gnu.org/onlinedocs/cpp/Preprocessor-Output.html
|
---|
615 | if (s/^\# (\d+) \"(.*?)\"(( \d+){1,4}|)//) {
|
---|
616 | $parser->YYData->{LINE} = $1-1;
|
---|
617 | $parser->YYData->{FILE} = $2;
|
---|
618 | goto again;
|
---|
619 | }
|
---|
620 | if (s/^\#line (\d+) \"(.*?)\"( \d+|)//) {
|
---|
621 | $parser->YYData->{LINE} = $1-1;
|
---|
622 | $parser->YYData->{FILE} = $2;
|
---|
623 | goto again;
|
---|
624 | }
|
---|
625 | if (s/^(\#.*)$//m) {
|
---|
626 | goto again;
|
---|
627 | }
|
---|
628 | }
|
---|
629 | if (s/^(\n)//) {
|
---|
630 | $parser->YYData->{LINE}++;
|
---|
631 | goto again;
|
---|
632 | }
|
---|
633 | if (s/^\"(.*?)\"//) {
|
---|
634 | $parser->YYData->{LAST_TOKEN} = $1;
|
---|
635 | return('TEXT',$1);
|
---|
636 | }
|
---|
637 | if (s/^(\d+)(\W|$)/$2/) {
|
---|
638 | $parser->YYData->{LAST_TOKEN} = $1;
|
---|
639 | return('CONSTANT',$1);
|
---|
640 | }
|
---|
641 | if (s/^([\w_]+)//) {
|
---|
642 | $parser->YYData->{LAST_TOKEN} = $1;
|
---|
643 | if ($1 =~
|
---|
644 | /^(coclass|interface|import|importlib
|
---|
645 | |include|cpp_quote|typedef
|
---|
646 | |union|struct|enum|bitmap|pipe
|
---|
647 | |void|const|unsigned|signed)$/x) {
|
---|
648 | return $1;
|
---|
649 | }
|
---|
650 | return('IDENTIFIER',$1);
|
---|
651 | }
|
---|
652 | if (s/^(.)//s) {
|
---|
653 | $parser->YYData->{LAST_TOKEN} = $1;
|
---|
654 | return($1,$1);
|
---|
655 | }
|
---|
656 | }
|
---|
657 | }
|
---|
658 |
|
---|
659 | sub parse_string
|
---|
660 | {
|
---|
661 | my ($data,$filename) = @_;
|
---|
662 |
|
---|
663 | my $self = new Parse::Pidl::IDL;
|
---|
664 |
|
---|
665 | $self->YYData->{FILE} = $filename;
|
---|
666 | $self->YYData->{INPUT} = $data;
|
---|
667 | $self->YYData->{LINE} = 0;
|
---|
668 | $self->YYData->{LAST_TOKEN} = "NONE";
|
---|
669 |
|
---|
670 | my $idl = $self->YYParse( yylex => \&_Lexer, yyerror => \&_Error );
|
---|
671 |
|
---|
672 | return CleanData($idl);
|
---|
673 | }
|
---|
674 |
|
---|
675 | sub parse_file($$)
|
---|
676 | {
|
---|
677 | my ($filename,$incdirs) = @_;
|
---|
678 |
|
---|
679 | my $saved_delim = $/;
|
---|
680 | undef $/;
|
---|
681 | my $cpp = $ENV{CPP};
|
---|
682 | my $options = "";
|
---|
683 | if (! defined $cpp) {
|
---|
684 | if (defined $ENV{CC}) {
|
---|
685 | $cpp = "$ENV{CC}";
|
---|
686 | $options = "-E";
|
---|
687 | } else {
|
---|
688 | $cpp = "cpp";
|
---|
689 | }
|
---|
690 | }
|
---|
691 | my $includes = join('',map { " -I$_" } @$incdirs);
|
---|
692 | my $data = `$cpp $options -D__PIDL__$includes -xc "$filename"`;
|
---|
693 | $/ = $saved_delim;
|
---|
694 |
|
---|
695 | return parse_string($data, $filename);
|
---|
696 | }
|
---|