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-rw-r--r--src/vlib/parse_builtin.c150
1 files changed, 150 insertions, 0 deletions
diff --git a/src/vlib/parse_builtin.c b/src/vlib/parse_builtin.c
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+++ b/src/vlib/parse_builtin.c
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+/*
+ * Copyright (c) 2015 Cisco and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#include <vlib/parse.h>
+
+always_inline void *
+parse_last_match_value (vlib_parse_main_t * pm)
+{
+ vlib_parse_item_t *i;
+ i = pool_elt_at_index (pm->parse_items,
+ vec_elt (pm->match_items,
+ vec_len (pm->match_items) - 1));
+ return i->value.as_pointer;
+}
+
+vlib_parse_match_t
+eof_match (vlib_parse_main_t * pm, vlib_parse_type_t * type,
+ vlib_lex_token_t * t, vlib_parse_value_t * valuep)
+{
+ return t->token ==
+ VLIB_LEX_eof ? VLIB_PARSE_MATCH_DONE : VLIB_PARSE_MATCH_FAIL;
+}
+
+PARSE_TYPE_INIT (eof, eof_match, 0 /* cleanup value */ ,
+ 0 /* format value */ );
+
+vlib_parse_match_t
+rule_eof_match (vlib_parse_main_t * pm, vlib_parse_type_t * type,
+ vlib_lex_token_t * t, vlib_parse_value_t * valuep)
+{
+ vlib_parse_match_function_t *fp = parse_last_match_value (pm);
+ pm->current_token_index--;
+ return fp ? fp (pm, type, t, valuep) : VLIB_PARSE_MATCH_RULE;
+}
+
+PARSE_TYPE_INIT (rule_eof, rule_eof_match, 0, 0);
+
+vlib_parse_match_t
+word_match (vlib_parse_main_t * pm, vlib_parse_type_t * type,
+ vlib_lex_token_t * t, vlib_parse_value_t * valuep)
+{
+ u8 *tv, *iv;
+ int i;
+
+ if (t->token != VLIB_LEX_word)
+ return VLIB_PARSE_MATCH_FAIL;
+
+ tv = t->value.as_pointer;
+ iv = parse_last_match_value (pm);
+
+ for (i = 0; tv[i]; i++)
+ {
+ if (tv[i] != iv[i])
+ return VLIB_PARSE_MATCH_FAIL;
+ }
+
+ return iv[i] == 0 ? VLIB_PARSE_MATCH_FULL : VLIB_PARSE_MATCH_PARTIAL;
+}
+
+PARSE_TYPE_INIT (word, word_match, 0 /* clnup value */ ,
+ 0 /* format value */ );
+
+vlib_parse_match_t
+number_match (vlib_parse_main_t * pm, vlib_parse_type_t * type,
+ vlib_lex_token_t * t, vlib_parse_value_t * valuep)
+{
+ if (t->token == VLIB_LEX_number)
+ {
+ valuep->value.as_uword = t->value.as_uword;
+ return VLIB_PARSE_MATCH_VALUE;
+ }
+ return VLIB_PARSE_MATCH_FAIL;
+}
+
+static u8 *
+format_value_number (u8 * s, va_list * args)
+{
+ vlib_parse_value_t *v = va_arg (*args, vlib_parse_value_t *);
+ uword a = v->value.as_uword;
+
+ if (BITS (uword) == 64)
+ s = format (s, "%lld(0x%llx)", a, a);
+ else
+ s = format (s, "%ld(0x%lx)", a, a);
+ return s;
+}
+
+PARSE_TYPE_INIT (number, number_match, 0 /* cln value */ ,
+ format_value_number /* fmt value */ );
+
+
+#define foreach_vanilla_lex_match_function \
+ _(plus) \
+ _(minus) \
+ _(star) \
+ _(slash) \
+ _(lpar) \
+ _(rpar)
+
+#define LEX_MATCH_DEBUG 0
+
+#define _(name) \
+vlib_parse_match_t name##_match (vlib_parse_main_t *pm, \
+ vlib_parse_type_t *type, \
+ vlib_lex_token_t *t, \
+ vlib_parse_value_t *valuep) \
+{ \
+ if (LEX_MATCH_DEBUG > 0) \
+ clib_warning ("against %U returns %s", \
+ format_vlib_lex_token, pm->lex_main, t, \
+ (t->token == VLIB_LEX_##name) \
+ ? "VLIB_PARSE_MATCH_FULL" : \
+ "VLIB_PARSE_MATCH_FAIL"); \
+ if (t->token == VLIB_LEX_##name) \
+ return VLIB_PARSE_MATCH_FULL; \
+ return VLIB_PARSE_MATCH_FAIL; \
+} \
+ \
+PARSE_TYPE_INIT (name, name##_match, 0 /* cln value */, \
+ 0 /* fmt val */);
+
+foreach_vanilla_lex_match_function
+#undef _
+/* So we're linked in. */
+static clib_error_t *
+parse_builtin_init (vlib_main_t * vm)
+{
+ return 0;
+}
+
+VLIB_INIT_FUNCTION (parse_builtin_init);
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */