Mercurial > vba-linux

     1 %{

     2 namespace std {  

     3 #include <stdio.h>

     4 #include <memory.h>

     5 #include <stdlib.h>

     6 #include <string.h>

     7 }

     8 

     9 using namespace std;

    10  

    11 #include "System.h"

    12 #include "elf.h"

    13 #include "exprNode.h" 

    14 

    15 extern int yyerror(char *);

    16 extern int yylex(); 

    17 extern char *yytext;

    18 

    19   

    20 //#define YYERROR_VERBOSE 1

    21 //#define YYDEBUG 1

    22 

    23  Node *result = NULL;

    24 %}

    25 

    26 %token TOKEN_IDENTIFIER TOKEN_DOT TOKEN_STAR TOKEN_ARROW TOKEN_ADDR

    27 %token TOKEN_SIZEOF TOKEN_NUMBER

    28 %left TOKEN_DOT TOKEN_ARROW '['

    29 %expect 6

    30 %%

    31 

    32 final: expression { result = $1; }

    33 ;

    34 

    35 expression:

    36   simple_expression { $$ = $1; } |

    37   '(' expression ')' { $$ = $2; } |

    38   expression TOKEN_DOT ident { $$ = exprNodeDot($1, $3); } |

    39   expression TOKEN_ARROW ident { $$ = exprNodeArrow($1, $3); } |

    40   expression '[' number ']' { $$ = exprNodeArray($1, $3); }

    41 ;

    42 simple_expression:

    43   ident  { $$ = $1; } |

    44   TOKEN_STAR expression { $$ = exprNodeStar($2); } |

    45   TOKEN_ADDR expression { $$ = exprNodeAddr($2); } |

    46   TOKEN_SIZEOF '(' expression ')' { $$ = exprNodeSizeof($3); }

    47 ;

    48 

    49 number:

    50   TOKEN_NUMBER { $$ = exprNodeNumber(); }

    51 ;

    52 

    53 ident:

    54   TOKEN_IDENTIFIER {$$ = exprNodeIdentifier(); }

    55 ;

    56 

    57 %%

    58 

    59 int yyerror(char *s)

    60 {

    61   return 0;

    62 }

    63 

    64 #ifndef SDL

    65 extern FILE *yyin;

    66 int main(int argc, char **argv)

    67 {

    68   //  yydebug = 1;

    69   ++argv, --argc;

    70   if(argc > 0)

    71     yyin = fopen(argv[0], "r");

    72   else

    73     yyin = stdin;

    74   if(!yyparse())

    75     result->print();

    76 }

    77 #endif
author	Robert McIntyre <rlm@mit.edu>
date	Thu, 21 Mar 2013 21:42:44 +0000
parents	f9f4f1b99eed
children