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Filter: Shortened method declarations
This commit is contained in:
Maria Matejka
Igor Putovny
parent
4a41bed418
commit
3054e26980
@ -294,6 +294,21 @@ m4_define([[INST_IS_METHOD]])
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m4_define([[INST_METHOD_NAME]],$1)
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FID_INTERPRET_BODY()')
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# Short method constructor
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# $1 = type
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# $2 = name
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# $3 = method inputs
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# method outputs are always 1
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# $4 = code
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m4_define(METHOD, `m4_dnl
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INST([[FI_METHOD__]]$1[[__]]$2, m4_eval($3 + 1), 1) {
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ARG(1, $1);
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$4
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METHOD_CONSTRUCTOR("$2");
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}')
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m4_define(METHOD_R, `METHOD($1, $2, $3, [[ RESULT($4, $5, $6) ]])')
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# 2) Code wrapping
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# The code produced in 1xx temporary diversions is a raw code without
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# any auxiliary commands and syntactical structures around. When the
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143
filter/f-inst.c
143
filter/f-inst.c
@ -101,6 +101,11 @@
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*
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* Other code is just copied into the interpreter part.
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*
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* It's also possible to declare type methods in a short way:
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*
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* m4_dnl METHOD(type, method name, argument count, code)
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* m4_dnl METHOD_R(type, method name, argument count, result type, union-field, value)
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*
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* The filter language uses a simple type system, where values have types
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* (constants T_*) and also terms (instructions) are statically typed. Our
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* static typing is partial (some terms do not declare types of arguments
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@ -491,17 +496,8 @@
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RESULT(T_BOOL, i, (v1.type != T_VOID) && !undef_value(v1));
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}
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INST(FI_NET_TYPE, 1, 1) {
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ARG(1, T_NET);
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METHOD_CONSTRUCTOR("type");
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RESULT(T_ENUM_NETTYPE, i, v1.val.net->type);
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}
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INST(FI_IS_V4, 1, 1) {
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ARG(1, T_IP);
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METHOD_CONSTRUCTOR("is_v4");
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RESULT(T_BOOL, i, ipa_is_ip4(v1.val.ip));
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}
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METHOD_R(T_NET, type, 0, T_ENUM_NETTYPE, i, v1.val.net->type);
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METHOD_R(T_IP, is_v4, 0, T_BOOL, i, ipa_is_ip4(v1.val.ip));
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INST(FI_VAR_INIT, 1, 0) {
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NEVER_CONSTANT;
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@ -545,29 +541,10 @@
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RESULT_VAL(val);
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}
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INST(FI_PATH_EMPTY, 1, 1) {
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ARG(1, T_PATH);
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METHOD_CONSTRUCTOR("empty");
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RESULT(T_PATH, ad, &null_adata);
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}
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INST(FI_CLIST_EMPTY, 1, 1) {
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ARG(1, T_CLIST);
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METHOD_CONSTRUCTOR("empty");
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RESULT(T_CLIST, ad, &null_adata);
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}
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INST(FI_ECLIST_EMPTY, 1, 1) {
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ARG(1, T_ECLIST);
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METHOD_CONSTRUCTOR("empty");
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RESULT(T_ECLIST, ad, &null_adata);
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}
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INST(FI_LCLIST_EMPTY, 1, 1) {
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ARG(1, T_LCLIST);
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METHOD_CONSTRUCTOR("empty");
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RESULT(T_LCLIST, ad, &null_adata);
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}
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METHOD_R(T_PATH, empty, 0, T_PATH, ad, &null_adata);
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METHOD_R(T_CLIST, empty, 0, T_CLIST, ad, &null_adata);
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METHOD_R(T_ECLIST, empty, 0, T_ECLIST, ad, &null_adata);
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METHOD_R(T_LCLIST, empty, 0, T_LCLIST, ad, &null_adata);
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/* Common loop begin instruction, always created by f_for_cycle() */
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INST(FI_FOR_LOOP_START, 0, 3) {
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@ -957,35 +934,12 @@
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ea_unset_attr(fs->eattrs, fs->pool, 1, da.ea_code);
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}
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INST(FI_NET_LENGTH, 1, 1) { /* Get length of */
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ARG(1, T_NET);
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METHOD_CONSTRUCTOR("len");
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RESULT(T_INT, i, net_pxlen(v1.val.net));
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}
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INST(FI_PATH_LENGTH, 1, 1) { /* Get length of */
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ARG(1, T_PATH);
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METHOD_CONSTRUCTOR("len");
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RESULT(T_INT, i, as_path_getlen(v1.val.ad));
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}
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INST(FI_CLIST_LENGTH, 1, 1) { /* Get length of */
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ARG(1, T_CLIST);
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METHOD_CONSTRUCTOR("len");
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RESULT(T_INT, i, int_set_get_size(v1.val.ad));
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}
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INST(FI_ECLIST_LENGTH, 1, 1) { /* Get length of */
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ARG(1, T_ECLIST);
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METHOD_CONSTRUCTOR("len");
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RESULT(T_INT, i, ec_set_get_size(v1.val.ad));
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}
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INST(FI_LCLIST_LENGTH, 1, 1) { /* Get length of */
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ARG(1, T_LCLIST);
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METHOD_CONSTRUCTOR("len");
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RESULT(T_INT, i, lc_set_get_size(v1.val.ad));
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}
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/* Get length of */
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METHOD_R(T_NET, len, 0, T_INT, i, net_pxlen(v1.val.net));
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METHOD_R(T_PATH, len, 0, T_INT, i, as_path_getlen(v1.val.ad));
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METHOD_R(T_CLIST, len, 0, T_INT, i, int_set_get_size(v1.val.ad));
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METHOD_R(T_ECLIST, len, 0, T_INT, i, ec_set_get_size(v1.val.ad));
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METHOD_R(T_LCLIST, len, 0, T_INT, i, lc_set_get_size(v1.val.ad));
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INST(FI_NET_SRC, 1, 1) { /* Get src prefix */
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ARG(1, T_NET);
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@ -1059,45 +1013,32 @@
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RESULT(T_NET, net, dst);
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}
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INST(FI_ROA_MAXLEN, 1, 1) { /* Get ROA max prefix length */
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ARG(1, T_NET);
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METHOD_CONSTRUCTOR("maxlen")
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/* Get ROA max prefix length */
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METHOD(T_NET, maxlen, 0, [[
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if (!net_is_roa(v1.val.net))
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runtime( "ROA expected" );
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RESULT(T_INT, i, (v1.val.net->type == NET_ROA4) ?
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((net_addr_roa4 *) v1.val.net)->max_pxlen :
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((net_addr_roa6 *) v1.val.net)->max_pxlen);
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}
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]]);
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INST(FI_NET_ASN, 1, 1) { /* Get ROA ASN or community ASN part */
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ARG(1, T_NET);
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METHOD_CONSTRUCTOR("asn");
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/* Get ROA ASN or community ASN part */
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METHOD_R(T_PAIR, asn, 0, T_INT, i, v1.val.i >> 16);
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METHOD_R(T_LC, asn, 0, T_INT, i, v1.val.lc.asn);
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METHOD(T_NET, asn, 0, [[
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if (!net_is_roa(v1.val.net))
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runtime( "ROA expected" );
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RESULT(T_INT, i, (v1.val.net->type == NET_ROA4) ?
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((net_addr_roa4 *) v1.val.net)->asn :
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((net_addr_roa6 *) v1.val.net)->asn);
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}
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]]);
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INST(FI_PAIR_ASN, 1, 1) { /* Get ROA ASN or community ASN part */
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ARG(1, T_PAIR);
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METHOD_CONSTRUCTOR("asn");
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RESULT(T_INT, i, v1.val.i >> 16);
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}
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INST(FI_LC_ASN, 1, 1) { /* Get ROA ASN or community ASN part */
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ARG(1, T_LC);
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METHOD_CONSTRUCTOR("asn");
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RESULT(T_INT, i, v1.val.lc.asn);
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}
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INST(FI_NET_IP, 1, 1) { /* Convert prefix to ... */
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ARG(1, T_NET);
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METHOD_CONSTRUCTOR("ip");
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RESULT(T_IP, ip, net_prefix(v1.val.net));
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}
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/* Convert prefix to IP */
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METHOD_R(T_NET, ip, 0, T_IP, ip, net_prefix(v1.val.net));
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INST(FI_ROUTE_DISTINGUISHER, 1, 1) {
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ARG(1, T_NET);
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@ -1123,29 +1064,17 @@
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RESULT(T_INT, i, as);
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}
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INST(FI_AS_PATH_LAST_NAG, 1, 1) { /* Get last ASN from non-aggregated part of AS PATH */
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ARG(1, T_PATH);
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METHOD_CONSTRUCTOR("last_nonaggregated");
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RESULT(T_INT, i, as_path_get_last_nonaggregated(v1.val.ad));
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}
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/* Get last ASN from non-aggregated part of AS PATH */
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METHOD_R(T_PATH, last_nonaggregated, 0, T_INT, i, as_path_get_last_nonaggregated(v1.val.ad));
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INST(FI_PAIR_DATA, 1, 1) { /* Get data part from the standard community */
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ARG(1, T_PAIR);
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METHOD_CONSTRUCTOR("data");
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RESULT(T_INT, i, v1.val.i & 0xFFFF);
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}
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/* Get data part from the standard community */
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METHOD_R(T_PAIR, data, 0, T_INT, i, v1.val.i & 0xFFFF);
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INST(FI_LC_DATA1, 1, 1) { /* Get data1 part from the large community */
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ARG(1, T_LC);
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METHOD_CONSTRUCTOR("data1");
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RESULT(T_INT, i, v1.val.lc.ldp1);
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}
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/* Get data1 part from the large community */
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METHOD_R(T_LC, data1, 0, T_INT, i, v1.val.lc.ldp1);
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INST(FI_LC_DATA2, 1, 1) { /* Get data2 part from the large community */
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ARG(1, T_LC);
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METHOD_CONSTRUCTOR("data2");
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RESULT(T_INT, i, v1.val.lc.ldp2);
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}
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/* Get data2 part from the large community */
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METHOD_R(T_LC, data2, 0, T_INT, i, v1.val.lc.ldp2);
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INST(FI_CLIST_MIN, 1, 1) { /* Get minimum element from list */
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ARG(1, T_CLIST);
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