diff options
Diffstat (limited to 'filter')
| -rw-r--r-- | filter/config.Y | 45 | ||||
| -rw-r--r-- | filter/filter.c | 4 |
2 files changed, 44 insertions, 5 deletions
diff --git a/filter/config.Y b/filter/config.Y index c7f2014..6aa1285 100644 --- a/filter/config.Y +++ b/filter/config.Y @@ -1,7 +1,7 @@ /* * BIRD - filters * - * Copyright 1998 Pavel Machek + * Copyright 1998,1999 Pavel Machek * * Can be freely distributed and used under the terms of the GNU GPL. */ @@ -29,11 +29,12 @@ CF_KEYWORDS(FUNCTION, PRINT, CONST, FILTER ) -%type <x> term block cmds cmd function_body ifthen constant print_one print_list +%type <x> term block cmds cmd function_body ifthen constant print_one print_list var_list %type <f> filter filter_body %type <i> type break_command %type <e> set_item set_items %type <v> set_atom +%type <s> decls function_params CF_GRAMMAR @@ -63,10 +64,12 @@ type: } ; -decls: /* EMPTY */ +decls: /* EMPTY */ { $$ = NULL; } | type SYM ';' decls { cf_define_symbol($2, SYM_VARIABLE | $1, NULL); printf( "New variable %s type %x\n", $2->name, $1 ); + $2->aux = $4; + $$=$2; } ; @@ -88,7 +91,7 @@ filter: ; function_params: - '(' decls ')' { printf( "Have function parameters\n" ); } + '(' decls ')' { printf( "Have function parameters\n" ); $$=$2; } ; function_body: @@ -104,6 +107,8 @@ function_def: cf_define_symbol($2, SYM_FUNCTION, $4); if (!strcasecmp($2->name, "startup")) startup_func = $4; + $2->aux = $3; + $2->aux2 = $4; printf("Hmm, we've got one function here - %s\n", $2->name); } ; @@ -173,7 +178,7 @@ term: $$->a2.p = &($1->aux); break; default: - cf_error("Can not use this class of symbol as variable" ); + cf_error("Can not use this class of symbol as variable." ); } } | constant { $$ = $1; } @@ -216,6 +221,16 @@ print_list: /* EMPTY */ { $$ = NULL; } } ; +var_list: /* EMPTY */ { $$ = NULL; } + | term ',' var_list { + $$ = f_new_inst(); + $$->code = 's'; + $$->a1.p = NULL; + $$->a2.p = $1; + $$->next = $3; + } + ; + cmd: ifthen { $$ = $1; @@ -237,6 +252,26 @@ cmd: $$->a2.p = $3; } | break_command print_list ';' { $$ = f_new_inst(); $$->code = 'p,'; $$->a1.p = $2; $$->a2.i = $1; } + | SYM '(' var_list ')' ';' { + struct symbol *sym; + struct f_inst *inst = $3; + if ($1->class != SYM_FUNCTION) + cf_error("You can not call something which is not function. Really."); + printf("You are calling function %s\n", $1->name); + $$ = f_new_inst(); + $$->code = 'ca'; + $$->a1.p = inst; + $$->a2.p = $1->aux2; + sym = $1->aux; + while (sym || inst) { + if (!sym || !inst) + cf_error("wrong number of arguments for function %s.", $1->name); + printf( "You should pass parameter called %s\n", sym->name); + inst->a1.p = sym; + sym = sym->aux; + inst = inst->next; + } + } ; CF_END diff --git a/filter/filter.c b/filter/filter.c index 7afae43..c98440c 100644 --- a/filter/filter.c +++ b/filter/filter.c @@ -250,6 +250,10 @@ interpret(struct f_inst *what) default: bug( "Unknown prefix to conversion\n" ); } break; + case 'ca': /* CALL */ + ONEARG; + res = interpret(what->a2.p); + break; default: bug( "Unknown instruction %d (%c)", what->code, what->code & 0xff); } |