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Filter: split out dot-notation methods to separate targets

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This is just a preparationary refactoring to allow type-based method
tables.
This commit is contained in:
Maria Matejka 2023-06-12 11:20:49 +02:00
parent 72f3189ca5
commit 3a221a74ef
1 changed files with 63 additions and 36 deletions
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99
filter/config.Y
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@ -19,8 +19,27 @@ static inline u32 pair(u32 a, u32 b) { return (a << 16) | b; }
static inline u32 pair_a(u32 p) { return p >> 16; }
static inline u32 pair_b(u32 p) { return p & 0xFFFF; }
#define f_generate_complex(fi_code, da, arg) \
f_new_inst(FI_EA_SET, f_new_inst(fi_code, f_new_inst(FI_EA_GET, da), arg), da)
static struct f_method_scope {
struct f_inst *object;
} f_method_scope_stack[32];
static int f_method_scope_pos = -1;
#define FM (f_method_scope_stack[f_method_scope_pos])
static inline void f_push_method_scope(struct f_inst *object)
{
if (++f_method_scope_pos >= (int) ARRAY_SIZE(f_method_scope_stack))
cf_error("Too many nested method calls");
FM = (struct f_method_scope) {
.object = object,
};
}
static inline void f_pop_method_scope(void)
{
ASSERT_DIE(f_method_scope_pos >= 0);
f_method_scope_pos--;
}
static int
f_new_var(struct sym_scope *s)
@ -327,7 +346,7 @@ CF_KEYWORDS(FUNCTION, PRINT, PRINTN, UNSET, RETURN,
%nonassoc ELSE
%type <xp> cmds_int cmd_prep
%type <x> term cmd cmd_var cmds cmds_scoped constant constructor print_list var var_init var_list function_call symbol_value bgp_path_expr bgp_path bgp_path_tail
%type <x> term cmd cmd_var cmds cmds_scoped constant constructor print_list var var_init var_list function_call symbol_value bgp_path_expr bgp_path bgp_path_tail method_cmd method_term
%type <fda> dynamic_attr
%type <fsa> static_attr
%type <f> filter where_filter
@ -802,6 +821,35 @@ static_attr:
| ONLINK { $$ = f_new_static_attr(T_BOOL, SA_ONLINK, 0); }
;
method_term:
IS_V4 { $$ = f_new_inst(FI_IS_V4, FM.object); }
| TYPE { $$ = f_new_inst(FI_TYPE, FM.object); }
| IP { $$ = f_new_inst(FI_IP, FM.object); }
| RD { $$ = f_new_inst(FI_ROUTE_DISTINGUISHER, FM.object); }
| LEN { $$ = f_new_inst(FI_LENGTH, FM.object); }
| MAXLEN { $$ = f_new_inst(FI_ROA_MAXLEN, FM.object); }
| ASN { $$ = f_new_inst(FI_ASN, FM.object); }
| SRC { $$ = f_new_inst(FI_NET_SRC, FM.object); }
| DST { $$ = f_new_inst(FI_NET_DST, FM.object); }
| MASK '(' term ')' { $$ = f_new_inst(FI_IP_MASK, FM.object, $3); }
| FIRST { $$ = f_new_inst(FI_AS_PATH_FIRST, FM.object); }
| LAST { $$ = f_new_inst(FI_AS_PATH_LAST, FM.object); }
| LAST_NONAGGREGATED { $$ = f_new_inst(FI_AS_PATH_LAST_NAG, FM.object); }
| DATA { $$ = f_new_inst(FI_PAIR_DATA, FM.object); }
| DATA1 { $$ = f_new_inst(FI_LC_DATA1, FM.object); }
| DATA2 { $$ = f_new_inst(FI_LC_DATA2, FM.object); }
| MIN { $$ = f_new_inst(FI_MIN, FM.object); }
| MAX { $$ = f_new_inst(FI_MAX, FM.object); }
;
method_cmd:
EMPTY { $$ = f_const_empty(FM.object->i_FI_EA_GET.da); }
| PREPEND '(' term ')' { $$ = f_new_inst(FI_PATH_PREPEND, FM.object, $3 ); }
| ADD '(' term ')' { $$ = f_new_inst(FI_CLIST_ADD, FM.object, $3 ); }
| DELETE '(' term ')' { $$ = f_new_inst(FI_CLIST_DEL, FM.object, $3 ); }
| FILTER '(' term ')' { $$ = f_new_inst(FI_CLIST_FILTER, FM.object, $3 ); }
;
term:
'(' term ')' { $$ = $2; }
| term '+' term { $$ = f_new_inst(FI_ADD, $1, $3); }
@ -829,32 +877,12 @@ term:
| dynamic_attr { $$ = f_new_inst(FI_EA_GET, $1); }
| term '.' IS_V4 { $$ = f_new_inst(FI_IS_V4, $1); }
| term '.' TYPE { $$ = f_new_inst(FI_TYPE, $1); }
| term '.' IP { $$ = f_new_inst(FI_IP, $1); }
| term '.' RD { $$ = f_new_inst(FI_ROUTE_DISTINGUISHER, $1); }
| term '.' LEN { $$ = f_new_inst(FI_LENGTH, $1); }
| term '.' MAXLEN { $$ = f_new_inst(FI_ROA_MAXLEN, $1); }
| term '.' ASN { $$ = f_new_inst(FI_ASN, $1); }
| term '.' SRC { $$ = f_new_inst(FI_NET_SRC, $1); }
| term '.' DST { $$ = f_new_inst(FI_NET_DST, $1); }
| term '.' MASK '(' term ')' { $$ = f_new_inst(FI_IP_MASK, $1, $5); }
| term '.' FIRST { $$ = f_new_inst(FI_AS_PATH_FIRST, $1); }
| term '.' LAST { $$ = f_new_inst(FI_AS_PATH_LAST, $1); }
| term '.' LAST_NONAGGREGATED { $$ = f_new_inst(FI_AS_PATH_LAST_NAG, $1); }
| term '.' DATA { $$ = f_new_inst(FI_PAIR_DATA, $1); }
| term '.' DATA1 { $$ = f_new_inst(FI_LC_DATA1, $1); }
| term '.' DATA2 { $$ = f_new_inst(FI_LC_DATA2, $1); }
| term '.' MIN { $$ = f_new_inst(FI_MIN, $1); }
| term '.' MAX { $$ = f_new_inst(FI_MAX, $1); }
/* Communities */
/* This causes one shift/reduce conflict
| dynamic_attr '.' ADD '(' term ')' { }
| dynamic_attr '.' DELETE '(' term ')' { }
| dynamic_attr '.' CONTAINS '(' term ')' { }
| dynamic_attr '.' RESET{ }
*/
| term '.' {
f_push_method_scope($1);
} method_term {
f_pop_method_scope();
$$ = $4;
}
| '+' EMPTY '+' { $$ = f_const_empty_path; }
| '-' EMPTY '-' { $$ = f_const_empty_clist; }
@ -870,8 +898,6 @@ term:
| FORMAT '(' term ')' { $$ = f_new_inst(FI_FORMAT, $3); }
/* | term '.' LEN { $$->code = P('P','l'); } */
| function_call
;
@ -979,11 +1005,12 @@ cmd:
$$ = f_new_inst(FI_SWITCH, $2, $4);
}
| dynamic_attr '.' EMPTY ';' { $$ = f_new_inst(FI_EA_SET, f_const_empty($1), $1); }
| dynamic_attr '.' PREPEND '(' term ')' ';' { $$ = f_generate_complex( FI_PATH_PREPEND, $1, $5 ); }
| dynamic_attr '.' ADD '(' term ')' ';' { $$ = f_generate_complex( FI_CLIST_ADD, $1, $5 ); }
| dynamic_attr '.' DELETE '(' term ')' ';' { $$ = f_generate_complex( FI_CLIST_DEL, $1, $5 ); }
| dynamic_attr '.' FILTER '(' term ')' ';' { $$ = f_generate_complex( FI_CLIST_FILTER, $1, $5 ); }
| dynamic_attr '.' {
f_push_method_scope(f_new_inst(FI_EA_GET, $1));
} method_cmd ';' {
f_pop_method_scope();
$$ = f_new_inst(FI_EA_SET, $4, $1);
}
| BT_ASSERT '(' get_cf_position term get_cf_position ')' ';' { $$ = assert_done($4, $3 + 1, $5 - 1); }
| BT_CHECK_ASSIGN '(' get_cf_position lvalue get_cf_position ',' term ')' ';' { $$ = assert_assign(&$4, $7, $3 + 1, $5 - 1); }
;