Mercurial > ~dholland > hg > ag > index.cgi
annotate tests/agcl/contrib/parse.syn @ 22:5581ef01f993
Regen all the AG output.
This also fixes the line number output in the tools
(cgbigen/helpgen/help2html), apparently because those files weren't
regenerated last go.
author | David A. Holland |
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date | Mon, 13 Jun 2022 00:06:39 -0400 |
parents | 13d2b8934445 |
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1 { |
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2 /* |
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3 * AnaGram, A System for Syntax Directed Programming |
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4 * Copyright 1993-1994 Steve Holland. All rights reserved. |
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5 * See the file COPYING for license and usage terms. |
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6 */ |
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7 /* Embedded C code */ |
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8 #include <exec/lists.h> |
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9 #include <intuition/classes.h> |
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10 #include <proto/intuition.h> |
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11 #include "OOLib.h" |
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12 #include "Expr.h" |
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13 #include "PushString.h" |
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14 #include "ClassManager.h" |
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15 #include "Driver/VariableClass.h" |
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16 #include "Number.h" |
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17 #include "Util.h" |
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18 |
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19 struct List ExprList; |
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20 |
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21 #define SYNTAX_ERROR fprintf(stderr,"%s, line %d, column %d\n", (PCB).error_message, (PCB).line, (PCB).column) |
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22 #define PARSER_STACK_OVERFLOW {fprintf(stderr, "\nParser stack overflow, line %d, column %d\n", (PCB).line, (PCB).column);} |
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23 #define REDUCTION_TOKEN_ERROR {fprintf(stderr, "\nReduction token error, line %d, column %d\n", (PCB).line, (PCB).column);} |
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24 |
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25 Object *VariableProto=NULL; /* remember to initialize this */ |
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26 |
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27 void Prepare_parse(void) |
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28 { |
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29 VariableProto=NewObject(FindOOClass("numberclass"),NULL,NM_ID,VARIABLECLASS_ID,TAG_END); |
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30 if (!VariableProto) Warning(183,"Unable to create prototype variable object"); |
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31 if (!ExprList.lh_Head) NewList(&ExprList); |
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32 } |
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33 |
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34 void End_parse(void) |
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35 { |
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36 if (VariableProto) DisposeObject(VariableProto); |
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37 VariableProto=NULL; |
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38 } |
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39 |
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40 } /* End of embedded C */ |
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41 EOL = '\n'+'\r' |
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42 DIGIT= '0-9' |
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43 ALPHA='a-z'+'A-Z' |
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44 GREEK=256..308 |
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45 RESERVED=','+';'+'='+'('+')'+'<'+'>'+'*'+'/'+'+'+'-'+0 |
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46 WS=' '+'\t' |
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47 WSDISREGARD=WS+'\r'+'\n' |
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48 /*ALNUM=ALPHA+DIGIT+GREEK*/ |
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49 ANYTHING=1..255+GREEK |
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50 ALNUM=~(RESERVED+WSDISREGARD) |
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51 |
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52 [ |
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53 disregard WhiteSpace |
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54 lexeme {VariNumStr} |
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55 parser stack size = 1000 |
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56 sticky {StringBody} |
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57 ~allow macros |
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58 ~case sensitive |
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59 escape backslashes |
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60 line numbers path = "parse.syn" |
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61 line numbers |
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62 ] |
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63 |
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64 (void)LineParse $ |
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65 -> Terminated Line..., 0 |
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66 |
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67 Terminated Line |
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68 -> Line, ';' |
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69 |
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70 (void)Line |
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71 -> "DEFINE",VariNumStr:n,'(',VariableList:List,')',VariableList:LocList,'(',Group,')' |
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72 -> "PRINT",VariNumStr:func |
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73 -> "VAR", VariableDecl |
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74 -> "QUIT" = PCB.exit_flag=AG_SUCCESS_CODE; |
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75 -> Comparison = { |
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76 Object *Result; |
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77 struct ExprNode *Node; |
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78 char *String=NULL; |
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79 Result=EvalExpr(&ExprList); |
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80 if (Result) { |
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81 GetAttr(NM_NumberString,Result,(ULONG *)&String); |
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82 if (String) printf("%s\n",String); |
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83 DisposeObject(Result); |
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84 } |
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85 |
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86 while (Node=(struct ExprNode *)RemHead(&ExprList)) { |
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87 if (Node->Op != OP_FUNC && Node->Data) DisposeObject(Node->Data); |
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88 Free(Node); |
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89 } |
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90 } |
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91 |
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92 (void)Group |
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93 -> Comparisons:a = {ReverseTopExprStack(&ExprList,a);Push(&ExprList,OP_GROUP,a,NULL);} |
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94 |
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95 (struct LocaleNode *)VariableList |
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96 -> !{struct Locale *Locale;DoMethod(VariableProto,VCM_NEWLOCALE,&Locale);},VariableListWork = {struct LocaleNode *Locale;DoMethod(VariableProto,VCM_TAKELOCALE,NULL,&Locale);return Locale;} |
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97 |
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98 VariableListWork |
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99 -> |
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100 -> VariListMemb |
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101 -> VariableListWork,',',VariListMemb |
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102 |
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103 VariableDecl |
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104 -> VariNumStr:Str ={ |
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105 if (Str && GetString(Str)) { |
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106 NewObject(FindOOClass("numberclass"),NULL, |
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107 NM_ID,VARIABLECLASS_ID, |
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108 VA_Create,TRUE, |
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109 NM_NumberString,GetString(Str), |
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110 VA_NoObject,TRUE, |
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111 TAG_END); |
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112 DeleteString(Str); |
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113 } |
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114 else ParsePanic(PP_MEM); |
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115 } |
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116 |
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117 -> "const",VariNumStr:Str,'=',VariNum:Num ={ |
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118 Object *Const; |
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119 if (Str && GetString(Str)) { |
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120 Const=NewObject(FindOOClass("numberclass"),NULL, |
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121 NM_ID,VARIABLECLASS_ID, |
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122 NM_NumberString,GetString(Str), |
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123 VA_Constant,TRUE, |
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124 VA_Create,TRUE, |
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125 TAG_END); |
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126 DeleteString(Str); |
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127 if (Const && Num) DoMethod(Const,VCM_ASSIGNFORCE,Num); |
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128 if (Const) DisposeObject(Const); |
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129 } |
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130 else ParsePanic(PP_MEM); |
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131 if (Num) DisposeObject(Num); |
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132 } |
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133 |
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134 |
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135 (void)VariListMemb |
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136 -> VariNumStr:Str ={ |
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137 if (Str && GetString(Str)) { |
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138 NewObject(FindOOClass("numberclass"),NULL, |
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139 NM_ID,VARIABLECLASS_ID, |
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140 VA_Create,TRUE, |
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141 NM_NumberString,GetString(Str), |
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142 VA_NoObject,TRUE, |
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143 TAG_END); |
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144 DeleteString(Str); |
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145 } |
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146 else ParsePanic(PP_MEM); |
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147 } |
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148 |
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149 -> "var",VariNumStr:Str ={ |
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150 if (Str && GetString(Str)) { |
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151 NewObject(FindOOClass("numberclass"),NULL, |
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152 NM_ID,VARIABLECLASS_ID, |
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153 NM_NumberString,GetString(Str), |
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154 VA_ByReference,TRUE, |
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155 VA_Create,TRUE, |
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156 VA_NoObject,TRUE, |
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157 TAG_END); |
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158 DeleteString(Str); |
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159 } |
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160 else ParsePanic(PP_MEM); |
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161 } |
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162 -> "const",VariNumStr:Str,VariNum:Num ={ |
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163 Object *Const; |
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164 if (Str && GetString(Str)) { |
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165 Const=NewObject(FindOOClass("numberclass"),NULL, |
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166 NM_ID,VARIABLECLASS_ID, |
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167 NM_NumberString,GetString(Str), |
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168 VA_Constant,TRUE, |
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169 VA_Create,TRUE, |
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170 TAG_END); |
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171 if (Const && Num) DoMethod(Const,VCM_ASSIGNFORCE,Num); |
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172 if (Const) DisposeObject(Const); |
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173 DeleteString(Str); |
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174 |
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175 } |
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176 else ParsePanic(PP_MEM); |
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177 if (Num) DisposeObject(Num); |
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178 } |
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179 |
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180 |
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181 Comparison |
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182 -> Assignment |
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183 -> Comparison,'>',Assignment ={ReverseTopExprStack(&ExprList,2);Push(&ExprList,OP_FUNC,2,FUNC_GT);} |
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184 -> Comparison,'<',Assignment ={ReverseTopExprStack(&ExprList,2);Push(&ExprList,OP_FUNC,2,FUNC_LT);} |
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185 -> Comparison,"==",Assignment ={ReverseTopExprStack(&ExprList,2);Push(&ExprList,OP_FUNC,2,FUNC_COMP);} |
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186 -> Comparison,'>','=',Assignment ={ReverseTopExprStack(&ExprList,2);Push(&ExprList,OP_FUNC,2,FUNC_GTEQ);} |
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187 -> Comparison,'<','=',Assignment ={ReverseTopExprStack(&ExprList,2);Push(&ExprList,OP_FUNC,2,FUNC_LTEQ);} |
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188 |
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189 (int) Comparisons |
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190 -> Comparison =1; |
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191 -> Comparison, ';' =1; |
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192 -> Comparison, ';',Comparisons:n =n+1; |
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193 |
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194 Assignment |
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195 -> Expression |
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196 -> VariNum:s,'=',Expression ={Push(&ExprList,OP_ASSIGN,0,s);} |
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197 |
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198 (void)FunctionCall |
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199 -> VariNumStr:f,'(',ArgumentList:n,')' = {ReverseTopExprStack(&ExprList,n);Push(&ExprList,OP_FUNC,n,GetString(f));DeleteString(f);} |
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200 |
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201 (void)Expression |
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202 -> Product |
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203 -> Expression,'+',Product ={ReverseTopExprStack(&ExprList,2);Push(&ExprList,OP_FUNC,2,FUNC_ADD);} |
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204 -> Expression,'-',Product ={ReverseTopExprStack(&ExprList,2);Push(&ExprList,OP_FUNC,2,FUNC_SUB);} |
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205 |
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206 (unsigned)ArgumentList |
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207 -> =0; |
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208 -> Group ={return 1;} |
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209 -> Group,',',ArgumentList:a =a+1; |
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210 |
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211 (void)Product |
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212 -> PowerFactor |
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213 -> Product,'*',Factor = {ReverseTopExprStack(&ExprList,2);Push(&ExprList,OP_FUNC,2,FUNC_MUL);} |
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214 -> Product,'/',Factor = {ReverseTopExprStack(&ExprList,2);Push(&ExprList,OP_FUNC,2,FUNC_DIV);} |
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215 |
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216 (void)PowerFactor |
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217 -> Factor |
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218 -> '-',PowerFactor = Push(&ExprList,OP_FUNC,1,FUNC_OPPOSITE); |
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219 -> PowerFactor,'^',Factor ={ReverseTopExprStack(&ExprList,2);Push(&ExprList,OP_FUNC,2,FUNC_POW);} |
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220 |
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221 (void)Factor |
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222 -> '(',Group,')' |
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223 -> VariNum:Vari = Push(&ExprList,OP_VAR,1,Vari); |
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224 -> FunctionCall |
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225 |
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226 |
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227 (Object *)VariNum |
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228 -> VariNumStr:Str ={ |
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229 Object *Result; |
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230 if (Str && GetString(Str)) { |
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231 DiscardBlanks(Str); |
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232 Result=NewObject(FindOOClass("numberclass"),NULL, |
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233 NM_NumberString,GetString(Str), |
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234 TAG_END); |
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235 DeleteString(Str); |
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236 if (Result) return Result; |
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237 } |
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238 ParsePanic(PP_MEM); |
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239 return NULL; |
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240 } |
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241 |
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242 |
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243 (struct String *)VariNumStr |
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244 -> StringBody:s = s; |
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245 |
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246 (struct String *) StringBody |
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247 -> ALNUM:c ={struct String *String;String=CreateString();StringInsChar(String,strlen(GetString(String)),c);return String;} |
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248 -> StringBody:String,ALNUM:c =StringInsChar(String,strlen(GetString(String)),c); |
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249 -> StringBody:String,WS:c =StringInsChar(String,strlen(GetString(String)),c); |
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250 |
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251 WhiteSpace |
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252 -> WSDISREGARD |
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253 -> "/*",ANYTHING...,"*/" |
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254 |