linux/tools/perf/util/parse-events.y
John Garry 864bc8c905 perf parse-events: Support event alias in form foo-bar-baz
Event aliasing for events whose name in the form foo-bar-baz is not
supported, while foo-bar, foo_bar_baz, and other combinations are, i.e.
two hyphens are not supported.

The HiSilicon D06 platform has events in such form:

  $ ./perf list sdir-home-migrate

  List of pre-defined events (to be used in -e):

  uncore hha:
    sdir-home-migrate
   [Unit: hisi_sccl,hha]

  $ sudo ./perf stat -e sdir-home-migrate
  event syntax error: 'sdir-home-migrate'
                          \___ parser error
  Run 'perf list' for a list of valid events

   Usage: perf stat [<options>] [<command>]

   -e, --event <event>event selector. use 'perf list' to list available events

To support, add an extra PMU event symbol type for "baz", and add a new
rule in the bison file.

Signed-off-by: John Garry <john.garry@huawei.com>
Acked-by: Ian Rogers <irogers@google.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Kajol Jain <kjain@linux.ibm.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Qi Liu <liuqi115@huawei.com>
Cc: Shaokun Zhang <zhangshaokun@hisilicon.com>
Cc: linuxarm@huawei.com
Link: https://lore.kernel.org/r/1642432215-234089-2-git-send-email-john.garry@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-01-22 17:20:12 -03:00

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%define api.pure full
%parse-param {void *_parse_state}
%parse-param {void *scanner}
%lex-param {void* scanner}
%locations
%{
#define YYDEBUG 1
#include <fnmatch.h>
#include <stdio.h>
#include <linux/compiler.h>
#include <linux/types.h>
#include <linux/zalloc.h>
#include "pmu.h"
#include "evsel.h"
#include "parse-events.h"
#include "parse-events-bison.h"
void parse_events_error(YYLTYPE *loc, void *parse_state, void *scanner, char const *msg);
#define ABORT_ON(val) \
do { \
if (val) \
YYABORT; \
} while (0)
static struct list_head* alloc_list(void)
{
struct list_head *list;
list = malloc(sizeof(*list));
if (!list)
return NULL;
INIT_LIST_HEAD(list);
return list;
}
static void free_list_evsel(struct list_head* list_evsel)
{
struct evsel *evsel, *tmp;
list_for_each_entry_safe(evsel, tmp, list_evsel, core.node) {
list_del_init(&evsel->core.node);
evsel__delete(evsel);
}
free(list_evsel);
}
static void inc_group_count(struct list_head *list,
struct parse_events_state *parse_state)
{
/* Count groups only have more than 1 members */
if (!list_is_last(list->next, list))
parse_state->nr_groups++;
}
%}
%token PE_START_EVENTS PE_START_TERMS
%token PE_VALUE PE_VALUE_SYM_HW PE_VALUE_SYM_SW PE_RAW PE_TERM
%token PE_VALUE_SYM_TOOL
%token PE_EVENT_NAME
%token PE_NAME
%token PE_BPF_OBJECT PE_BPF_SOURCE
%token PE_MODIFIER_EVENT PE_MODIFIER_BP
%token PE_NAME_CACHE_TYPE PE_NAME_CACHE_OP_RESULT
%token PE_PREFIX_MEM PE_PREFIX_RAW PE_PREFIX_GROUP
%token PE_ERROR
%token PE_PMU_EVENT_PRE PE_PMU_EVENT_SUF PE_PMU_EVENT_SUF2 PE_KERNEL_PMU_EVENT PE_PMU_EVENT_FAKE
%token PE_ARRAY_ALL PE_ARRAY_RANGE
%token PE_DRV_CFG_TERM
%type <num> PE_VALUE
%type <num> PE_VALUE_SYM_HW
%type <num> PE_VALUE_SYM_SW
%type <num> PE_VALUE_SYM_TOOL
%type <num> PE_RAW
%type <num> PE_TERM
%type <num> value_sym
%type <str> PE_NAME
%type <str> PE_BPF_OBJECT
%type <str> PE_BPF_SOURCE
%type <str> PE_NAME_CACHE_TYPE
%type <str> PE_NAME_CACHE_OP_RESULT
%type <str> PE_MODIFIER_EVENT
%type <str> PE_MODIFIER_BP
%type <str> PE_EVENT_NAME
%type <str> PE_PMU_EVENT_PRE PE_PMU_EVENT_SUF PE_PMU_EVENT_SUF2 PE_KERNEL_PMU_EVENT PE_PMU_EVENT_FAKE
%type <str> PE_DRV_CFG_TERM
%type <str> event_pmu_name
%destructor { free ($$); } <str>
%type <term> event_term
%destructor { parse_events_term__delete ($$); } <term>
%type <list_terms> event_config
%type <list_terms> opt_event_config
%type <list_terms> opt_pmu_config
%destructor { parse_events_terms__delete ($$); } <list_terms>
%type <list_evsel> event_pmu
%type <list_evsel> event_legacy_symbol
%type <list_evsel> event_legacy_cache
%type <list_evsel> event_legacy_mem
%type <list_evsel> event_legacy_tracepoint
%type <list_evsel> event_legacy_numeric
%type <list_evsel> event_legacy_raw
%type <list_evsel> event_bpf_file
%type <list_evsel> event_def
%type <list_evsel> event_mod
%type <list_evsel> event_name
%type <list_evsel> event
%type <list_evsel> events
%type <list_evsel> group_def
%type <list_evsel> group
%type <list_evsel> groups
%destructor { free_list_evsel ($$); } <list_evsel>
%type <tracepoint_name> tracepoint_name
%destructor { free ($$.sys); free ($$.event); } <tracepoint_name>
%type <array> array
%type <array> array_term
%type <array> array_terms
%destructor { free ($$.ranges); } <array>
%union
{
char *str;
u64 num;
struct list_head *list_evsel;
struct list_head *list_terms;
struct parse_events_term *term;
struct tracepoint_name {
char *sys;
char *event;
} tracepoint_name;
struct parse_events_array array;
}
%%
start:
PE_START_EVENTS start_events
|
PE_START_TERMS start_terms
start_events: groups
{
struct parse_events_state *parse_state = _parse_state;
/* frees $1 */
parse_events_update_lists($1, &parse_state->list);
}
groups:
groups ',' group
{
struct list_head *list = $1;
struct list_head *group = $3;
/* frees $3 */
parse_events_update_lists(group, list);
$$ = list;
}
|
groups ',' event
{
struct list_head *list = $1;
struct list_head *event = $3;
/* frees $3 */
parse_events_update_lists(event, list);
$$ = list;
}
|
group
|
event
group:
group_def ':' PE_MODIFIER_EVENT
{
struct list_head *list = $1;
int err;
err = parse_events__modifier_group(list, $3);
free($3);
if (err) {
struct parse_events_state *parse_state = _parse_state;
struct parse_events_error *error = parse_state->error;
parse_events_error__handle(error, @3.first_column,
strdup("Bad modifier"), NULL);
free_list_evsel(list);
YYABORT;
}
$$ = list;
}
|
group_def
group_def:
PE_NAME '{' events '}'
{
struct list_head *list = $3;
inc_group_count(list, _parse_state);
parse_events__set_leader($1, list, _parse_state);
free($1);
$$ = list;
}
|
'{' events '}'
{
struct list_head *list = $2;
inc_group_count(list, _parse_state);
parse_events__set_leader(NULL, list, _parse_state);
$$ = list;
}
events:
events ',' event
{
struct list_head *event = $3;
struct list_head *list = $1;
/* frees $3 */
parse_events_update_lists(event, list);
$$ = list;
}
|
event
event: event_mod
event_mod:
event_name PE_MODIFIER_EVENT
{
struct list_head *list = $1;
int err;
/*
* Apply modifier on all events added by single event definition
* (there could be more events added for multiple tracepoint
* definitions via '*?'.
*/
err = parse_events__modifier_event(list, $2, false);
free($2);
if (err) {
struct parse_events_state *parse_state = _parse_state;
struct parse_events_error *error = parse_state->error;
parse_events_error__handle(error, @2.first_column,
strdup("Bad modifier"), NULL);
free_list_evsel(list);
YYABORT;
}
$$ = list;
}
|
event_name
event_name:
PE_EVENT_NAME event_def
{
int err;
err = parse_events_name($2, $1);
free($1);
if (err) {
free_list_evsel($2);
YYABORT;
}
$$ = $2;
}
|
event_def
event_def: event_pmu |
event_legacy_symbol |
event_legacy_cache sep_dc |
event_legacy_mem |
event_legacy_tracepoint sep_dc |
event_legacy_numeric sep_dc |
event_legacy_raw sep_dc |
event_bpf_file
event_pmu_name:
PE_NAME | PE_PMU_EVENT_PRE
event_pmu:
event_pmu_name opt_pmu_config
{
struct parse_events_state *parse_state = _parse_state;
struct parse_events_error *error = parse_state->error;
struct list_head *list = NULL, *orig_terms = NULL, *terms= NULL;
char *pattern = NULL;
#define CLEANUP_YYABORT \
do { \
parse_events_terms__delete($2); \
parse_events_terms__delete(orig_terms); \
free(list); \
free($1); \
free(pattern); \
YYABORT; \
} while(0)
if (parse_events_copy_term_list($2, &orig_terms))
CLEANUP_YYABORT;
if (error)
error->idx = @1.first_column;
list = alloc_list();
if (!list)
CLEANUP_YYABORT;
if (parse_events_add_pmu(_parse_state, list, $1, $2, false, false)) {
struct perf_pmu *pmu = NULL;
int ok = 0;
if (asprintf(&pattern, "%s*", $1) < 0)
CLEANUP_YYABORT;
while ((pmu = perf_pmu__scan(pmu)) != NULL) {
char *name = pmu->name;
if (!strncmp(name, "uncore_", 7) &&
strncmp($1, "uncore_", 7))
name += 7;
if (!perf_pmu__match(pattern, name, $1) ||
!perf_pmu__match(pattern, pmu->alias_name, $1)) {
if (parse_events_copy_term_list(orig_terms, &terms))
CLEANUP_YYABORT;
if (!parse_events_add_pmu(_parse_state, list, pmu->name, terms, true, false))
ok++;
parse_events_terms__delete(terms);
}
}
if (!ok)
CLEANUP_YYABORT;
}
parse_events_terms__delete($2);
parse_events_terms__delete(orig_terms);
free(pattern);
free($1);
$$ = list;
#undef CLEANUP_YYABORT
}
|
PE_KERNEL_PMU_EVENT sep_dc
{
struct list_head *list;
int err;
err = parse_events_multi_pmu_add(_parse_state, $1, NULL, &list);
free($1);
if (err < 0)
YYABORT;
$$ = list;
}
|
PE_KERNEL_PMU_EVENT opt_pmu_config
{
struct list_head *list;
int err;
/* frees $2 */
err = parse_events_multi_pmu_add(_parse_state, $1, $2, &list);
free($1);
if (err < 0)
YYABORT;
$$ = list;
}
|
PE_PMU_EVENT_PRE '-' PE_PMU_EVENT_SUF '-' PE_PMU_EVENT_SUF2 sep_dc
{
struct list_head *list;
char pmu_name[128];
snprintf(pmu_name, sizeof(pmu_name), "%s-%s-%s", $1, $3, $5);
free($1);
free($3);
free($5);
if (parse_events_multi_pmu_add(_parse_state, pmu_name, NULL, &list) < 0)
YYABORT;
$$ = list;
}
|
PE_PMU_EVENT_PRE '-' PE_PMU_EVENT_SUF sep_dc
{
struct list_head *list;
char pmu_name[128];
snprintf(pmu_name, sizeof(pmu_name), "%s-%s", $1, $3);
free($1);
free($3);
if (parse_events_multi_pmu_add(_parse_state, pmu_name, NULL, &list) < 0)
YYABORT;
$$ = list;
}
|
PE_PMU_EVENT_FAKE sep_dc
{
struct list_head *list;
int err;
list = alloc_list();
if (!list)
YYABORT;
err = parse_events_add_pmu(_parse_state, list, $1, NULL, false, false);
free($1);
if (err < 0) {
free(list);
YYABORT;
}
$$ = list;
}
|
PE_PMU_EVENT_FAKE opt_pmu_config
{
struct list_head *list;
int err;
list = alloc_list();
if (!list)
YYABORT;
err = parse_events_add_pmu(_parse_state, list, $1, $2, false, false);
free($1);
parse_events_terms__delete($2);
if (err < 0) {
free(list);
YYABORT;
}
$$ = list;
}
value_sym:
PE_VALUE_SYM_HW
|
PE_VALUE_SYM_SW
event_legacy_symbol:
value_sym '/' event_config '/'
{
struct list_head *list;
int type = $1 >> 16;
int config = $1 & 255;
int err;
list = alloc_list();
ABORT_ON(!list);
err = parse_events_add_numeric(_parse_state, list, type, config, $3);
parse_events_terms__delete($3);
if (err) {
free_list_evsel(list);
YYABORT;
}
$$ = list;
}
|
value_sym sep_slash_slash_dc
{
struct list_head *list;
int type = $1 >> 16;
int config = $1 & 255;
list = alloc_list();
ABORT_ON(!list);
ABORT_ON(parse_events_add_numeric(_parse_state, list, type, config, NULL));
$$ = list;
}
|
PE_VALUE_SYM_TOOL sep_slash_slash_dc
{
struct list_head *list;
list = alloc_list();
ABORT_ON(!list);
ABORT_ON(parse_events_add_tool(_parse_state, list, $1));
$$ = list;
}
event_legacy_cache:
PE_NAME_CACHE_TYPE '-' PE_NAME_CACHE_OP_RESULT '-' PE_NAME_CACHE_OP_RESULT opt_event_config
{
struct parse_events_state *parse_state = _parse_state;
struct parse_events_error *error = parse_state->error;
struct list_head *list;
int err;
list = alloc_list();
ABORT_ON(!list);
err = parse_events_add_cache(list, &parse_state->idx, $1, $3, $5, error, $6,
parse_state);
parse_events_terms__delete($6);
free($1);
free($3);
free($5);
if (err) {
free_list_evsel(list);
YYABORT;
}
$$ = list;
}
|
PE_NAME_CACHE_TYPE '-' PE_NAME_CACHE_OP_RESULT opt_event_config
{
struct parse_events_state *parse_state = _parse_state;
struct parse_events_error *error = parse_state->error;
struct list_head *list;
int err;
list = alloc_list();
ABORT_ON(!list);
err = parse_events_add_cache(list, &parse_state->idx, $1, $3, NULL, error, $4,
parse_state);
parse_events_terms__delete($4);
free($1);
free($3);
if (err) {
free_list_evsel(list);
YYABORT;
}
$$ = list;
}
|
PE_NAME_CACHE_TYPE opt_event_config
{
struct parse_events_state *parse_state = _parse_state;
struct parse_events_error *error = parse_state->error;
struct list_head *list;
int err;
list = alloc_list();
ABORT_ON(!list);
err = parse_events_add_cache(list, &parse_state->idx, $1, NULL, NULL, error, $2,
parse_state);
parse_events_terms__delete($2);
free($1);
if (err) {
free_list_evsel(list);
YYABORT;
}
$$ = list;
}
event_legacy_mem:
PE_PREFIX_MEM PE_VALUE '/' PE_VALUE ':' PE_MODIFIER_BP sep_dc
{
struct parse_events_state *parse_state = _parse_state;
struct list_head *list;
int err;
list = alloc_list();
ABORT_ON(!list);
err = parse_events_add_breakpoint(list, &parse_state->idx,
$2, $6, $4);
free($6);
if (err) {
free(list);
YYABORT;
}
$$ = list;
}
|
PE_PREFIX_MEM PE_VALUE '/' PE_VALUE sep_dc
{
struct parse_events_state *parse_state = _parse_state;
struct list_head *list;
list = alloc_list();
ABORT_ON(!list);
if (parse_events_add_breakpoint(list, &parse_state->idx,
$2, NULL, $4)) {
free(list);
YYABORT;
}
$$ = list;
}
|
PE_PREFIX_MEM PE_VALUE ':' PE_MODIFIER_BP sep_dc
{
struct parse_events_state *parse_state = _parse_state;
struct list_head *list;
int err;
list = alloc_list();
ABORT_ON(!list);
err = parse_events_add_breakpoint(list, &parse_state->idx,
$2, $4, 0);
free($4);
if (err) {
free(list);
YYABORT;
}
$$ = list;
}
|
PE_PREFIX_MEM PE_VALUE sep_dc
{
struct parse_events_state *parse_state = _parse_state;
struct list_head *list;
list = alloc_list();
ABORT_ON(!list);
if (parse_events_add_breakpoint(list, &parse_state->idx,
$2, NULL, 0)) {
free(list);
YYABORT;
}
$$ = list;
}
event_legacy_tracepoint:
tracepoint_name opt_event_config
{
struct parse_events_state *parse_state = _parse_state;
struct parse_events_error *error = parse_state->error;
struct list_head *list;
int err;
list = alloc_list();
ABORT_ON(!list);
if (error)
error->idx = @1.first_column;
err = parse_events_add_tracepoint(list, &parse_state->idx, $1.sys, $1.event,
error, $2);
parse_events_terms__delete($2);
free($1.sys);
free($1.event);
if (err) {
free(list);
YYABORT;
}
$$ = list;
}
tracepoint_name:
PE_NAME '-' PE_NAME ':' PE_NAME
{
struct tracepoint_name tracepoint;
ABORT_ON(asprintf(&tracepoint.sys, "%s-%s", $1, $3) < 0);
tracepoint.event = $5;
free($1);
free($3);
$$ = tracepoint;
}
|
PE_NAME ':' PE_NAME
{
struct tracepoint_name tracepoint = {$1, $3};
$$ = tracepoint;
}
event_legacy_numeric:
PE_VALUE ':' PE_VALUE opt_event_config
{
struct list_head *list;
int err;
list = alloc_list();
ABORT_ON(!list);
err = parse_events_add_numeric(_parse_state, list, (u32)$1, $3, $4);
parse_events_terms__delete($4);
if (err) {
free(list);
YYABORT;
}
$$ = list;
}
event_legacy_raw:
PE_RAW opt_event_config
{
struct list_head *list;
int err;
list = alloc_list();
ABORT_ON(!list);
err = parse_events_add_numeric(_parse_state, list, PERF_TYPE_RAW, $1, $2);
parse_events_terms__delete($2);
if (err) {
free(list);
YYABORT;
}
$$ = list;
}
event_bpf_file:
PE_BPF_OBJECT opt_event_config
{
struct parse_events_state *parse_state = _parse_state;
struct list_head *list;
int err;
list = alloc_list();
ABORT_ON(!list);
err = parse_events_load_bpf(parse_state, list, $1, false, $2);
parse_events_terms__delete($2);
free($1);
if (err) {
free(list);
YYABORT;
}
$$ = list;
}
|
PE_BPF_SOURCE opt_event_config
{
struct list_head *list;
int err;
list = alloc_list();
ABORT_ON(!list);
err = parse_events_load_bpf(_parse_state, list, $1, true, $2);
parse_events_terms__delete($2);
if (err) {
free(list);
YYABORT;
}
$$ = list;
}
opt_event_config:
'/' event_config '/'
{
$$ = $2;
}
|
'/' '/'
{
$$ = NULL;
}
|
{
$$ = NULL;
}
opt_pmu_config:
'/' event_config '/'
{
$$ = $2;
}
|
'/' '/'
{
$$ = NULL;
}
start_terms: event_config
{
struct parse_events_state *parse_state = _parse_state;
if (parse_state->terms) {
parse_events_terms__delete ($1);
YYABORT;
}
parse_state->terms = $1;
}
event_config:
event_config ',' event_term
{
struct list_head *head = $1;
struct parse_events_term *term = $3;
if (!head) {
parse_events_term__delete(term);
YYABORT;
}
list_add_tail(&term->list, head);
$$ = $1;
}
|
event_term
{
struct list_head *head = malloc(sizeof(*head));
struct parse_events_term *term = $1;
ABORT_ON(!head);
INIT_LIST_HEAD(head);
list_add_tail(&term->list, head);
$$ = head;
}
event_term:
PE_RAW
{
struct parse_events_term *term;
ABORT_ON(parse_events_term__num(&term, PARSE_EVENTS__TERM_TYPE_CONFIG,
NULL, $1, false, &@1, NULL));
$$ = term;
}
|
PE_NAME '=' PE_NAME
{
struct parse_events_term *term;
if (parse_events_term__str(&term, PARSE_EVENTS__TERM_TYPE_USER,
$1, $3, &@1, &@3)) {
free($1);
free($3);
YYABORT;
}
$$ = term;
}
|
PE_NAME '=' PE_VALUE
{
struct parse_events_term *term;
if (parse_events_term__num(&term, PARSE_EVENTS__TERM_TYPE_USER,
$1, $3, false, &@1, &@3)) {
free($1);
YYABORT;
}
$$ = term;
}
|
PE_NAME '=' PE_VALUE_SYM_HW
{
struct parse_events_term *term;
int config = $3 & 255;
if (parse_events_term__sym_hw(&term, $1, config)) {
free($1);
YYABORT;
}
$$ = term;
}
|
PE_NAME
{
struct parse_events_term *term;
if (parse_events_term__num(&term, PARSE_EVENTS__TERM_TYPE_USER,
$1, 1, true, &@1, NULL)) {
free($1);
YYABORT;
}
$$ = term;
}
|
PE_VALUE_SYM_HW
{
struct parse_events_term *term;
int config = $1 & 255;
ABORT_ON(parse_events_term__sym_hw(&term, NULL, config));
$$ = term;
}
|
PE_TERM '=' PE_NAME
{
struct parse_events_term *term;
if (parse_events_term__str(&term, (int)$1, NULL, $3, &@1, &@3)) {
free($3);
YYABORT;
}
$$ = term;
}
|
PE_TERM '=' PE_VALUE
{
struct parse_events_term *term;
ABORT_ON(parse_events_term__num(&term, (int)$1, NULL, $3, false, &@1, &@3));
$$ = term;
}
|
PE_TERM
{
struct parse_events_term *term;
ABORT_ON(parse_events_term__num(&term, (int)$1, NULL, 1, true, &@1, NULL));
$$ = term;
}
|
PE_NAME array '=' PE_NAME
{
struct parse_events_term *term;
if (parse_events_term__str(&term, PARSE_EVENTS__TERM_TYPE_USER,
$1, $4, &@1, &@4)) {
free($1);
free($4);
free($2.ranges);
YYABORT;
}
term->array = $2;
$$ = term;
}
|
PE_NAME array '=' PE_VALUE
{
struct parse_events_term *term;
if (parse_events_term__num(&term, PARSE_EVENTS__TERM_TYPE_USER,
$1, $4, false, &@1, &@4)) {
free($1);
free($2.ranges);
YYABORT;
}
term->array = $2;
$$ = term;
}
|
PE_DRV_CFG_TERM
{
struct parse_events_term *term;
char *config = strdup($1);
ABORT_ON(!config);
if (parse_events_term__str(&term, PARSE_EVENTS__TERM_TYPE_DRV_CFG,
config, $1, &@1, NULL)) {
free($1);
free(config);
YYABORT;
}
$$ = term;
}
array:
'[' array_terms ']'
{
$$ = $2;
}
|
PE_ARRAY_ALL
{
$$.nr_ranges = 0;
$$.ranges = NULL;
}
array_terms:
array_terms ',' array_term
{
struct parse_events_array new_array;
new_array.nr_ranges = $1.nr_ranges + $3.nr_ranges;
new_array.ranges = realloc($1.ranges,
sizeof(new_array.ranges[0]) *
new_array.nr_ranges);
ABORT_ON(!new_array.ranges);
memcpy(&new_array.ranges[$1.nr_ranges], $3.ranges,
$3.nr_ranges * sizeof(new_array.ranges[0]));
free($3.ranges);
$$ = new_array;
}
|
array_term
array_term:
PE_VALUE
{
struct parse_events_array array;
array.nr_ranges = 1;
array.ranges = malloc(sizeof(array.ranges[0]));
ABORT_ON(!array.ranges);
array.ranges[0].start = $1;
array.ranges[0].length = 1;
$$ = array;
}
|
PE_VALUE PE_ARRAY_RANGE PE_VALUE
{
struct parse_events_array array;
ABORT_ON($3 < $1);
array.nr_ranges = 1;
array.ranges = malloc(sizeof(array.ranges[0]));
ABORT_ON(!array.ranges);
array.ranges[0].start = $1;
array.ranges[0].length = $3 - $1 + 1;
$$ = array;
}
sep_dc: ':' |
sep_slash_slash_dc: '/' '/' | ':' |
%%
void parse_events_error(YYLTYPE *loc, void *parse_state,
void *scanner __maybe_unused,
char const *msg __maybe_unused)
{
parse_events_evlist_error(parse_state, loc->last_column, "parser error");
}