9 %token STRUCT END METHOD VAR IF THEN ELSE WHILE DO RETURN NOT OR THIS
10 %token IDENT NUM ASSIGN
13 @i xx = @Statement.sin@;
17 @i @Statement.sout@ = @Statement.sin@;
19 *> xxputsin(@Statement.sout@,)
20 * geht nicht, weil verschachtelte macros deaktiviert sind */
24 @attributes { char *name; } IDENT
25 @attributes { struct symbol *f; } FeldID Parms Structdef Program
26 @attributes { struct symbol *s; } Methoddef Statseq Lexpr Expr Minusterm Multerm Orterm Term Exprs Feld
27 @attributes { struct symbol *sin; struct symbol *sout; } Statement
29 @traversal @postorder c
35 @i @Program.f@ = new_tab();
42 @i @Methoddef.s@ = @Program.0.f@;
43 @i @Program.1.f@ = @Program.0.f@;
46 | Structdef ';' Program
48 @i @Program.1.f@ = tab_merge(@Program.0.f@, @Structdef.f@, 1);
54 METHOD IDENT '(' Parms ')' Statseq END
56 @i @Statseq.s@ = tab_merge(@Methoddef.s@, @Parms.f@, 0);
63 @i @Structdef.f@ = @FeldID.f@;
68 /* lokale Vars werden in Statement in die tabelle eingefuegt */
71 @i @Parms.0.f@ = tab_add_symbol(@Parms.1.f@, @IDENT.name@, S_VAR, 1);
76 @i @Parms.f@ = new_tab();
83 @i @FeldID.0.f@ = tab_add_symbol(@FeldID.1.f@, @IDENT.name@, S_FIELD, 1);
88 @i @FeldID.f@ = new_tab();
95 @i @Statement.sin@ = @Statseq.0.s@;
96 @i @Statseq.1.s@ = @Statement.sout@;
110 | VAR IDENT ASSIGN Expr
112 @i @Statement.sout@ = tab_add_symbol(clone_tab(@Statement.sin@), @IDENT.name@, S_VAR, 1);
122 | IF Expr THEN Statseq END
126 xxputsin(@Statseq.s@,)
129 | IF Expr THEN Statseq ELSE Statseq END
133 xxputsin(@Statseq.0.s@,)
134 xxputsin(@Statseq.1.s@,)
137 | WHILE Expr DO Statseq END
141 xxputsin(@Statseq.s@,)
154 @c check(@Lexpr.s@, @IDENT.name@, S_VAR);
162 @c check(@Feld.s@, @IDENT.name@, S_FIELD);
198 @c check(@Term.s@, @IDENT.name@, S_VAR);
202 | IDENT '(' Exprs ')'
203 | Term '.' IDENT '(' Exprs ')'
216 int yyerror(char *error_text)
218 fprintf(stderr,"Zeile %i: %s\n", yylineno, error_text);
222 int main(int argc, char **argv)