1 | %option stack |
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2 | %x BOOLEAN_S |
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3 | %x INTEGER_S |
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4 | %x FLOAT_S |
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5 | %x TIME_S |
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6 | %x URN_S |
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7 | %x STRING_S |
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8 | %x KEYID_S |
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9 | %x RANGE_S |
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10 | |
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11 | %top{ |
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12 | #include <stdio.h> |
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13 | #include <string.h> |
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14 | #include "rt2.h" |
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15 | |
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16 | static int debug=0; |
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17 | |
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18 | /* if using canned fixed test string */ |
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19 | char INPUT_LINE[] = "usc.playground <- usc.employee.friend"; |
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20 | char *yyfptr = INPUT_LINE; /* assigned with default */ |
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21 | char *yyfptr_encoded=NULL; |
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22 | |
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23 | /* with yacc */ |
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24 | extern YYSTYPE yylval; |
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25 | extern char* abac_encode_string(char *); |
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26 | |
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27 | #undef YY_INPUT |
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28 | #define YY_INPUT(buf,result,max_size) \ |
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29 | { \ |
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30 | if(yyfptr != NULL) { \ |
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31 | char* c = strncpy(buf,yyfptr,max_size); \ |
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32 | if (max_size > 0) buf[max_size-1] = '\0'; \ |
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33 | if(strlen(yyfptr) > max_size) yyfptr = yyfptr + max_size-1; \ |
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34 | else yyfptr=NULL; \ |
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35 | result = (c == NULL ) ? YY_NULL : strlen(buf); \ |
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36 | } else { \ |
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37 | buf[0] = '\0'; \ |
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38 | result = YY_NULL; \ |
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39 | } \ |
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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 | DIGIT [0-9] |
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45 | %% |
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46 | \. { if(debug) fprintf(yyout, " DOT " ); |
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47 | return DOT; } |
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48 | keyid { yylval.string=strdup(yytext); |
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49 | if(debug) fprintf(yyout," KEYTYPE "); |
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50 | return KEYTYPE; } |
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51 | <KEYID_S>[a-zA-Z0-9]+ { |
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52 | yylval.string=strdup(yytext); |
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53 | if(debug) fprintf(yyout," KEYID_CONSTANT "); |
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54 | return KEYID_CONSTANT; } |
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55 | oset { if(debug) fprintf(yyout," OSET "); |
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56 | return OSET; } |
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57 | role { if(debug) fprintf(yyout," ROLE "); |
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58 | return ROLE; } |
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59 | principal { if(debug) fprintf(yyout," PRINCIPAL "); |
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60 | return PRINCIPAL; } |
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61 | integer { yylval.string=strdup(yytext); |
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62 | if(debug) fprintf(yyout," OTYPE(INTEGER) "); |
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63 | return OTYPE; } |
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64 | <INTEGER_S>{DIGIT}+ { |
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65 | yylval.string=strdup(yytext); |
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66 | if(debug) fprintf(yyout," OTYPE_CONSTANT(INTEGER) "); |
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67 | return OTYPE_CONSTANT; } |
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68 | <INTEGER_S>[-]{DIGIT}+ { |
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69 | yylval.string=strdup(yytext); |
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70 | if(debug) fprintf(yyout," OTYPE_CONSTANT(INTEGER) "); |
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71 | return OTYPE_CONSTANT; } |
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72 | boolean { yylval.string =strdup(yytext); |
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73 | if(debug) fprintf(yyout," OTYPE(BOOLEAN) "); |
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74 | return OTYPE; } |
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75 | <BOOLEAN_S>true|false { |
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76 | yylval.string=strdup(yytext); |
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77 | if(debug) fprintf(yyout," OTYPE_CONSTANT(BOOLEAN) "); |
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78 | return OTYPE_CONSTANT; } |
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79 | <BOOLEAN_S,INTEGER_S,FLOAT_S,URN_S,STRING_S,TIME_S>[?][A-Z][\-_a-zA-Z0-9]* { |
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80 | yylval.string=strdup(yytext+1); |
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81 | if(debug) fprintf(yyout," VARIABLE_CONSTANT(%s) ",yylval.string); |
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82 | return VARIABLE_CONSTANT; } |
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83 | <BOOLEAN_S,INTEGER_S,FLOAT_S,URN_S,STRING_S,TIME_S>[?] { |
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84 | yylval.string=strdup(yytext+1); |
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85 | if(debug) fprintf(yyout," QMARK "); |
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86 | return QMARK; } |
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87 | <BOOLEAN_S,INTEGER_S,FLOAT_S,URN_S,STRING_S,TIME_S>\[ { |
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88 | if(debug) fprintf(yyout," LSQUARE "); |
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89 | return LSQUARE; } |
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90 | <BOOLEAN_S,INTEGER_S,FLOAT_S,URN_S,STRING_S,TIME_S>\] { |
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91 | if(debug) fprintf(yyout," RSQUARE "); |
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92 | return RSQUARE; } |
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93 | <BOOLEAN_S,INTEGER_S,FLOAT_S,URN_S,STRING_S,TIME_S>\: { |
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94 | if(debug) fprintf(yyout," COLON "); |
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95 | return COLON; } |
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96 | float { yylval.string =strdup(yytext); |
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97 | if(debug) fprintf(yyout," OTYPE(FLOAT) "); |
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98 | return OTYPE; } |
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99 | <FLOAT_S>-{DIGIT}+"."{DIGIT}+ | |
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100 | <FLOAT_S>{DIGIT}+"."{DIGIT}+ | |
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101 | <FLOAT_S>{DIGIT}+ | |
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102 | <FLOAT_S>-{DIGIT}+ { |
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103 | yylval.string=strdup(yytext); |
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104 | if(debug) fprintf(yyout," OTYPE_CONSTANT(FLOAT) "); |
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105 | return OTYPE_CONSTANT; } |
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106 | time { yylval.string=strdup(yytext); |
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107 | if(debug) fprintf(yyout," OTYPE(TIME) "); |
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108 | return OTYPE; } |
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109 | <TIME_S>{DIGIT}{DIGIT}*"T"{DIGIT}* { |
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110 | yylval.string=strdup(yytext); |
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111 | if(debug) fprintf(yyout," OTYPE_CONSTANT(TIME) "); |
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112 | return OTYPE_CONSTANT; } |
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113 | urn { yylval.string=strdup(yytext); |
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114 | if(debug) fprintf(yyout," OTYPE(URN) "); |
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115 | return OTYPE; } |
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116 | <URN_S>[']([^']|\\')*['] | |
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117 | <URN_S>["]([^"]|\")*["] { |
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118 | yylval.string=strdup(yytext); |
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119 | if(debug) fprintf(yyout," OTYPE_CONSTANT(URN)(%s) ",yylval.string); |
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120 | return OTYPE_CONSTANT; } |
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121 | string { yylval.string=strdup(yytext); |
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122 | if(debug) fprintf(yyout," OTYPE(STRING) "); |
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123 | return OTYPE; } |
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124 | <STRING_S>[']([^']|\\')*['] | |
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125 | <STRING_S>["]([^"]|\")*["] { |
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126 | yylval.string=strdup(yytext); |
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127 | if(debug) fprintf(yyout," OTYPE_CONSTANT(STRING)(%s) ", yylval.string); |
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128 | return OTYPE_CONSTANT; } |
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129 | <RANGE_S>\[ { |
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130 | if(debug) fprintf(yyout," LSQUARE "); |
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131 | return LSQUARE; } |
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132 | <RANGE_S>\] { |
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133 | if(debug) fprintf(yyout," RSQUARE "); |
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134 | return RSQUARE; } |
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135 | <RANGE_S>\.\. { |
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136 | if(debug) fprintf(yyout," DOTDOT "); |
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137 | return DOTDOT; } |
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138 | <RANGE_S>, { |
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139 | if(debug) fprintf(yyout," COMMA "); |
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140 | return COMMA; } |
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141 | <RANGE_S>true|false { |
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142 | yylval.string=strdup(yytext); |
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143 | if(debug) fprintf(yyout," VALUE(BOOLEAN)(%s) ", yylval.string); |
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144 | return VALUE; } |
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145 | <RANGE_S>[']([^']|\\')*['] | |
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146 | <RANGE_S>["]([^"]|\")*["] { |
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147 | yylval.string=strdup(yytext); |
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148 | if(debug) fprintf(yyout," VALUE(STRING)(%s) ", yylval.string); |
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149 | return VALUE; } |
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150 | <RANGE_S>{DIGIT}+ | |
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151 | <RANGE_S>-{DIGIT}+ | |
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152 | <RANGE_S>-{DIGIT}.{DIGIT}+ | |
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153 | <RANGE_S>{DIGIT}.{DIGIT}+ | |
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154 | <RANGE_S>{DIGIT}+T{DIGIT}+ { |
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155 | yylval.string=strdup(yytext); |
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156 | if(debug) fprintf(yyout," VALUE(%s) ",yylval.string); |
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157 | return VALUE; } |
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158 | [a-zA-Z0-9][\-_a-zA-Z0-9]* { |
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159 | yylval.string=strdup(yytext); |
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160 | if(debug) fprintf(yyout," IDEN(%s) ", yylval.string); |
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161 | return IDEN; } |
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162 | \<- { if(debug) fprintf(yyout," DERIVE "); |
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163 | return DERIVE; } |
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164 | & { if(debug) fprintf(yyout, " AND " ); |
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165 | return AND; } |
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166 | , { if(debug) fprintf(yyout, " COMMA "); |
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167 | return COMMA; } |
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168 | \( { if(debug) fprintf(yyout, " LPAREN "); |
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169 | return LPAREN; } |
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170 | \) { if(debug) fprintf(yyout, " RPAREN "); |
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171 | return RPAREN; } |
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172 | \[ { if(debug) fprintf(yyout, " LSQUARE "); |
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173 | return LSQUARE; } |
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174 | \] { if(debug) fprintf(yyout, " RSQUARE "); |
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175 | return RSQUARE; } |
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176 | \: { if(debug) fprintf(yyout, " COLON "); |
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177 | return COLON; } |
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178 | \? { if(debug) fprintf(yyout, " QMARK "); |
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179 | return QMARK; } |
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180 | \n { /* ignore end-of-line */; } |
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181 | [ \t]+ { /* ignore whitespace */; } |
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182 | %% |
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183 | |
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184 | void abac_reset_yyfptr(char *str) { |
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185 | yyfptr=str; |
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186 | yyfptr_encoded=abac_encode_string(str); |
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187 | } |
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188 | |
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189 | char* abac_get_yyfptr() { |
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190 | return yyfptr; |
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191 | } |
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192 | |
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193 | char *abac_get_yyfptr_encoded() { |
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194 | return yyfptr_encoded; |
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195 | } |
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196 | |
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197 | /* if using external file input, output */ |
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198 | void abac_reset_yyin(FILE *new_yyin) { |
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199 | yyin=new_yyin; |
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200 | } |
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201 | |
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202 | void abac_reset_yyout(FILE *new_yyout) { |
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203 | if(yyout) { |
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204 | fflush(yyout); |
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205 | fclose(yyout); |
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206 | } |
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207 | yyout=new_yyout; |
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208 | } |
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209 | |
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210 | void abac_flush_yyout() { |
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211 | if(yyout) |
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212 | fflush(yyout); |
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213 | } |
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214 | |
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215 | FILE *abac_get_yyin() { |
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216 | if(yyin) return yyin; |
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217 | else return stdin; |
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218 | } |
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219 | FILE *abac_get_yyout() { |
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220 | if(yyout) return yyout; |
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221 | else return stdout; |
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222 | } |
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223 | |
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224 | void abac_push_keyid_yystate() |
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225 | { |
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226 | if(debug) fprintf(yyout, "\n push keyid state\n"); |
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227 | yy_push_state(KEYID_S); |
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228 | } |
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229 | |
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230 | void abac_push_range_yystate() |
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231 | { |
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232 | if(debug) fprintf(yyout, "\n push range state\n"); |
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233 | yy_push_state(RANGE_S); |
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234 | } |
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235 | |
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236 | void abac_push_yystate(char *str) |
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237 | { |
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238 | if(strcmp(str,"boolean")==0) { |
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239 | if(debug) fprintf(yyout, "\n push boolean state\n"); |
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240 | yy_push_state(BOOLEAN_S); |
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241 | return; |
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242 | } |
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243 | if(strcmp(str,"integer")==0) { |
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244 | if(debug) fprintf(yyout, "\n push integer state\n"); |
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245 | yy_push_state(INTEGER_S); |
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246 | return; |
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247 | } |
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248 | if(strcmp(str,"float")==0) { |
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249 | if(debug) fprintf(yyout, "\n push float state\n"); |
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250 | yy_push_state(FLOAT_S); |
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251 | return; |
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252 | } |
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253 | if(strcmp(str,"time")==0) { |
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254 | if(debug) fprintf(yyout, "\n push time state\n"); |
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255 | yy_push_state(TIME_S); |
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256 | return; |
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257 | } |
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258 | if(strcmp(str,"urn")==0) { |
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259 | if(debug) fprintf(yyout, "\n push urn state\n"); |
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260 | yy_push_state(URN_S); |
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261 | return; |
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262 | } |
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263 | if(strcmp(str,"string")==0) { |
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264 | if(debug) fprintf(yyout, "\n push string state\n"); |
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265 | yy_push_state(STRING_S); |
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266 | return; |
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267 | } |
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268 | |
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269 | if(debug) fprintf(yyout, "eek.. lost in push_state\n"); |
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270 | } |
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271 | |
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272 | void abac_pop_yystate() |
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273 | { |
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274 | if(debug) fprintf(yyout, " pop a state\n"); |
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275 | yy_pop_state(); |
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276 | } |
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