mirror of
https://github.com/prometheus/prometheus.git
synced 2024-11-09 23:24:05 -08:00
PromQL: Parse Metrics using generated parser (#6466)
* Parse Metrics with the generated parser Signed-off-by: Tobias Guggenmos <tguggenm@redhat.com>
This commit is contained in:
Tobias Guggenmos
Brian Brazil
parent
b38b25e9e1
commit
53615412b4
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@ -15,6 +15,8 @@
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package promql
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import (
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"sort"
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"github.com/prometheus/prometheus/pkg/labels"
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)
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%}
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@ -24,7 +26,6 @@
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item Item
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matchers []*labels.Matcher
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matcher *labels.Matcher
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labelSet []labels.Label
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label labels.Label
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labels labels.Labels
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}
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@ -106,15 +107,15 @@
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// Start symbols for the generated parser.
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%token START_LABELS
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%token START_LABEL_SET
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%token START_METRIC
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%token startSymbolsEnd
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%type <matchers> label_matchers label_match_list
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%type <matcher> label_matcher
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%type <item> match_op
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%type <item> match_op metric_identifier
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%type <labels> label_set
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%type <labelSet> label_set_list
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%type <labels> label_set_list label_set metric
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%type <label> label_set_item
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%start start
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@ -123,7 +124,9 @@
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start : START_LABELS label_matchers
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{yylex.(*parser).generatedParserResult.(*VectorSelector).LabelMatchers = $2}
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| START_LABEL_SET label_set
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| START_LABEL_SET label_set
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{ yylex.(*parser).generatedParserResult = $2 }
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| START_METRIC metric
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{ yylex.(*parser).generatedParserResult = $2 }
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| error /* If none of the more detailed error messages are triggered, we fall back to this. */
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{ yylex.(*parser).errorf("unexpected %v", yylex.(*parser).token.desc()) }
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@ -167,6 +170,21 @@ match_op :
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| NEQ_REGEX {$$=$1}
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;
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metric :
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metric_identifier label_set
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{ $$ = append($2, labels.Label{Name: labels.MetricName, Value: $1.Val}); sort.Sort($$) }
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| label_set
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{$$ = $1}
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| error
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{ yylex.(*parser).errorf("missing metric name or metric selector")}
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;
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metric_identifier
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:
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METRIC_IDENTIFIER {$$=$1}
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| IDENTIFIER {$$=$1}
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label_set :
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LEFT_BRACE label_set_list RIGHT_BRACE
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{ $$ = labels.New($2...) }
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@ -174,6 +192,8 @@ label_set :
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{ $$ = labels.New($2...) }
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| LEFT_BRACE RIGHT_BRACE
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{ $$ = labels.New() }
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| /* empty */
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{ $$ = labels.New() }
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;
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label_set_list :
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@ -8,17 +8,18 @@ import __yyfmt__ "fmt"
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//line promql/generated_parser.y:15
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import (
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"sort"
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"github.com/prometheus/prometheus/pkg/labels"
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)
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//line promql/generated_parser.y:22
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//line promql/generated_parser.y:24
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type yySymType struct {
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yys int
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node Node
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item Item
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matchers []*labels.Matcher
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matcher *labels.Matcher
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labelSet []labels.Label
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label labels.Label
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labels labels.Labels
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}
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@ -89,7 +90,8 @@ const keywordsEnd = 57408
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const startSymbolsStart = 57409
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const START_LABELS = 57410
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const START_LABEL_SET = 57411
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const startSymbolsEnd = 57412
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const START_METRIC = 57412
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const startSymbolsEnd = 57413
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var yyToknames = [...]string{
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"$end",
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@ -161,6 +163,7 @@ var yyToknames = [...]string{
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"startSymbolsStart",
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"START_LABELS",
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"START_LABEL_SET",
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"START_METRIC",
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"startSymbolsEnd",
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}
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var yyStatenames = [...]string{}
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@ -169,68 +172,74 @@ const yyEofCode = 1
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const yyErrCode = 2
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const yyInitialStackSize = 16
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//line promql/generated_parser.y:203
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//line promql/generated_parser.y:223
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//line yacctab:1
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var yyExca = [...]int{
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-1, 1,
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1, -1,
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-2, 0,
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-1, 4,
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1, 27,
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-2, 0,
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}
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const yyPrivate = 57344
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const yyLast = 68
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const yyLast = 69
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var yyAct = [...]int{
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4, 23, 16, 32, 11, 40, 36, 30, 21, 18,
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1, 8, 14, 6, 17, 7, 22, 28, 19, 37,
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29, 20, 39, 35, 9, 34, 13, 5, 0, 0,
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0, 12, 38, 24, 25, 31, 33, 18, 13, 26,
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27, 0, 17, 12, 0, 0, 0, 15, 10, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 2, 3,
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5, 31, 18, 23, 40, 48, 44, 38, 29, 25,
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1, 9, 7, 10, 24, 21, 11, 36, 27, 45,
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37, 28, 47, 43, 30, 20, 16, 25, 6, 0,
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19, 42, 24, 32, 33, 41, 39, 22, 20, 34,
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35, 46, 8, 19, 13, 0, 0, 12, 17, 15,
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14, 0, 0, 9, 26, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 2, 3, 4,
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}
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var yyPact = [...]int{
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-2, -1000, 2, 0, -1000, -1000, 36, -1000, 35, 6,
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-1000, -1000, -1, -1000, 5, -1000, -1000, 1, -1000, -1000,
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24, -1000, 4, -1000, -1000, -1000, -1000, -1000, -1000, 7,
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-1000, 3, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000,
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-1000,
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-2, -1000, 1, 0, 42, -1000, -1000, 36, -1000, 25,
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-1000, 0, -1000, -1000, -1000, -1000, 6, -1000, -1000, -1,
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-1000, 5, -1000, -1000, 2, -1000, -1000, -1000, 23, -1000,
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4, -1000, -1000, -1000, -1000, -1000, -1000, 7, -1000, 3,
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-1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000,
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}
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var yyPgo = [...]int{
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0, 27, 24, 4, 16, 15, 12, 2, 10,
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0, 28, 26, 2, 24, 16, 15, 42, 13, 3,
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10,
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}
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var yyR1 = [...]int{
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0, 8, 8, 8, 1, 1, 1, 2, 2, 2,
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3, 3, 3, 3, 4, 4, 4, 4, 5, 5,
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5, 6, 6, 6, 7, 7, 7, 7,
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0, 10, 10, 10, 10, 1, 1, 1, 2, 2,
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2, 3, 3, 3, 3, 4, 4, 4, 4, 8,
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8, 8, 5, 5, 7, 7, 7, 7, 6, 6,
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6, 9, 9, 9, 9,
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}
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var yyR2 = [...]int{
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0, 2, 2, 1, 3, 4, 2, 3, 1, 2,
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3, 3, 2, 1, 1, 1, 1, 1, 3, 4,
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2, 3, 1, 2, 3, 3, 2, 1,
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0, 2, 2, 2, 1, 3, 4, 2, 3, 1,
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2, 3, 3, 2, 1, 1, 1, 1, 1, 2,
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1, 1, 1, 1, 3, 4, 2, 0, 3, 1,
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2, 3, 3, 2, 1,
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}
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var yyChk = [...]int{
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-1000, -8, 68, 69, 2, -1, 11, -5, 11, -2,
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12, -3, 7, 2, -6, 12, -7, 7, 2, 12,
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15, 2, -4, 2, 34, 35, 40, 41, 12, 15,
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2, 34, 2, 12, -3, 19, 2, 12, -7, 19,
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2,
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-1000, -10, 68, 69, 70, 2, -1, 11, -7, 11,
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-8, -5, -7, 2, 8, 7, -2, 12, -3, 7,
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2, -6, 12, -9, 7, 2, -7, 12, 15, 2,
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-4, 2, 34, 35, 40, 41, 12, 15, 2, 34,
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2, 12, -3, 19, 2, 12, -9, 19, 2,
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}
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var yyDef = [...]int{
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0, -2, 0, 0, 3, 1, 0, 2, 0, 0,
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6, 8, 0, 13, 0, 20, 22, 0, 27, 4,
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0, 9, 0, 12, 14, 15, 16, 17, 18, 0,
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23, 0, 26, 5, 7, 10, 11, 19, 21, 24,
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25,
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0, -2, 0, 27, -2, 4, 1, 0, 2, 0,
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3, 27, 20, 21, 22, 23, 0, 7, 9, 0,
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14, 0, 26, 29, 0, 34, 19, 5, 0, 10,
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0, 13, 15, 16, 17, 18, 24, 0, 30, 0,
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33, 6, 8, 11, 12, 25, 28, 31, 32,
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}
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var yyTok1 = [...]int{
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@ -244,7 +253,7 @@ var yyTok2 = [...]int{
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32, 33, 34, 35, 36, 37, 38, 39, 40, 41,
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42, 43, 44, 45, 46, 47, 48, 49, 50, 51,
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52, 53, 54, 55, 56, 57, 58, 59, 60, 61,
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62, 63, 64, 65, 66, 67, 68, 69, 70,
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62, 63, 64, 65, 66, 67, 68, 69, 70, 71,
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}
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var yyTok3 = [...]int{
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0,
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@ -589,163 +598,206 @@ yydefault:
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case 1:
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yyDollar = yyS[yypt-2 : yypt+1]
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//line promql/generated_parser.y:125
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//line promql/generated_parser.y:126
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{
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yylex.(*parser).generatedParserResult.(*VectorSelector).LabelMatchers = yyDollar[2].matchers
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}
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case 2:
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yyDollar = yyS[yypt-2 : yypt+1]
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//line promql/generated_parser.y:127
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//line promql/generated_parser.y:128
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{
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yylex.(*parser).generatedParserResult = yyDollar[2].labels
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}
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case 3:
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yyDollar = yyS[yypt-2 : yypt+1]
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//line promql/generated_parser.y:130
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{
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yylex.(*parser).generatedParserResult = yyDollar[2].labels
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}
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case 4:
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yyDollar = yyS[yypt-1 : yypt+1]
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//line promql/generated_parser.y:129
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//line promql/generated_parser.y:132
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{
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yylex.(*parser).errorf("unexpected %v", yylex.(*parser).token.desc())
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}
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case 4:
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yyDollar = yyS[yypt-3 : yypt+1]
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//line promql/generated_parser.y:135
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{
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yyVAL.matchers = yyDollar[2].matchers
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}
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case 5:
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yyDollar = yyS[yypt-4 : yypt+1]
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//line promql/generated_parser.y:137
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yyDollar = yyS[yypt-3 : yypt+1]
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//line promql/generated_parser.y:138
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{
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yyVAL.matchers = yyDollar[2].matchers
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}
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case 6:
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yyDollar = yyS[yypt-4 : yypt+1]
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//line promql/generated_parser.y:140
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{
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yyVAL.matchers = yyDollar[2].matchers
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}
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case 7:
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yyDollar = yyS[yypt-2 : yypt+1]
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//line promql/generated_parser.y:139
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//line promql/generated_parser.y:142
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{
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yyVAL.matchers = []*labels.Matcher{}
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}
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case 7:
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case 8:
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yyDollar = yyS[yypt-3 : yypt+1]
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//line promql/generated_parser.y:145
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//line promql/generated_parser.y:148
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{
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yyVAL.matchers = append(yyDollar[1].matchers, yyDollar[3].matcher)
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}
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case 8:
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case 9:
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yyDollar = yyS[yypt-1 : yypt+1]
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//line promql/generated_parser.y:147
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//line promql/generated_parser.y:150
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{
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yyVAL.matchers = []*labels.Matcher{yyDollar[1].matcher}
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}
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case 9:
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case 10:
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yyDollar = yyS[yypt-2 : yypt+1]
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//line promql/generated_parser.y:149
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//line promql/generated_parser.y:152
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{
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yylex.(*parser).errorf("unexpected %v in label matching, expected \",\" or \"}\"", yylex.(*parser).token.desc())
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}
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case 10:
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case 11:
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yyDollar = yyS[yypt-3 : yypt+1]
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//line promql/generated_parser.y:154
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//line promql/generated_parser.y:157
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{
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yyVAL.matcher = yylex.(*parser).newLabelMatcher(yyDollar[1].item, yyDollar[2].item, yyDollar[3].item)
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}
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case 11:
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case 12:
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yyDollar = yyS[yypt-3 : yypt+1]
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//line promql/generated_parser.y:156
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//line promql/generated_parser.y:159
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{
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yylex.(*parser).errorf("unexpected %v in label matching, expected string", yylex.(*parser).token.desc())
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}
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case 12:
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case 13:
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yyDollar = yyS[yypt-2 : yypt+1]
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//line promql/generated_parser.y:158
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//line promql/generated_parser.y:161
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{
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yylex.(*parser).errorf("unexpected %v in label matching, expected label matching operator", yylex.(*parser).token.Val)
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}
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case 13:
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case 14:
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yyDollar = yyS[yypt-1 : yypt+1]
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//line promql/generated_parser.y:160
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//line promql/generated_parser.y:163
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{
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yylex.(*parser).errorf("unexpected %v in label matching, expected identifier or \"}\"", yylex.(*parser).token.desc())
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}
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case 14:
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yyDollar = yyS[yypt-1 : yypt+1]
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//line promql/generated_parser.y:164
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{
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yyVAL.item = yyDollar[1].item
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}
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case 15:
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yyDollar = yyS[yypt-1 : yypt+1]
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//line promql/generated_parser.y:165
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{
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yyVAL.item = yyDollar[1].item
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}
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case 16:
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yyDollar = yyS[yypt-1 : yypt+1]
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//line promql/generated_parser.y:166
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{
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yyVAL.item = yyDollar[1].item
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}
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case 17:
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yyDollar = yyS[yypt-1 : yypt+1]
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//line promql/generated_parser.y:167
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{
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yyVAL.item = yyDollar[1].item
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}
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case 18:
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yyDollar = yyS[yypt-3 : yypt+1]
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//line promql/generated_parser.y:172
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case 16:
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yyDollar = yyS[yypt-1 : yypt+1]
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//line promql/generated_parser.y:168
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{
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yyVAL.labels = labels.New(yyDollar[2].labelSet...)
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yyVAL.item = yyDollar[1].item
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}
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case 17:
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yyDollar = yyS[yypt-1 : yypt+1]
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//line promql/generated_parser.y:169
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{
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yyVAL.item = yyDollar[1].item
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}
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case 18:
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yyDollar = yyS[yypt-1 : yypt+1]
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//line promql/generated_parser.y:170
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{
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yyVAL.item = yyDollar[1].item
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}
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case 19:
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yyDollar = yyS[yypt-4 : yypt+1]
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//line promql/generated_parser.y:174
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{
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yyVAL.labels = labels.New(yyDollar[2].labelSet...)
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}
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case 20:
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yyDollar = yyS[yypt-2 : yypt+1]
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//line promql/generated_parser.y:176
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{
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yyVAL.labels = labels.New()
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yyVAL.labels = append(yyDollar[2].labels, labels.Label{Name: labels.MetricName, Value: yyDollar[1].item.Val})
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sort.Sort(yyVAL.labels)
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}
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case 20:
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yyDollar = yyS[yypt-1 : yypt+1]
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//line promql/generated_parser.y:178
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{
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yyVAL.labels = yyDollar[1].labels
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}
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case 21:
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yyDollar = yyS[yypt-3 : yypt+1]
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//line promql/generated_parser.y:181
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yyDollar = yyS[yypt-1 : yypt+1]
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//line promql/generated_parser.y:180
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{
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yyVAL.labelSet = append(yyDollar[1].labelSet, yyDollar[3].label)
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yylex.(*parser).errorf("missing metric name or metric selector")
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}
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case 22:
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yyDollar = yyS[yypt-1 : yypt+1]
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//line promql/generated_parser.y:183
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{
|
||||
yyVAL.labelSet = []labels.Label{yyDollar[1].label}
|
||||
}
|
||||
case 23:
|
||||
yyDollar = yyS[yypt-2 : yypt+1]
|
||||
//line promql/generated_parser.y:185
|
||||
{
|
||||
yylex.(*parser).errorf("unexpected %v in label set, expected \",\" or \"}\"", yylex.(*parser).token.desc())
|
||||
yyVAL.item = yyDollar[1].item
|
||||
}
|
||||
case 23:
|
||||
yyDollar = yyS[yypt-1 : yypt+1]
|
||||
//line promql/generated_parser.y:186
|
||||
{
|
||||
yyVAL.item = yyDollar[1].item
|
||||
}
|
||||
case 24:
|
||||
yyDollar = yyS[yypt-3 : yypt+1]
|
||||
//line promql/generated_parser.y:191
|
||||
//line promql/generated_parser.y:190
|
||||
{
|
||||
yyVAL.label = labels.Label{Name: yyDollar[1].item.Val, Value: yylex.(*parser).unquoteString(yyDollar[3].item.Val)}
|
||||
yyVAL.labels = labels.New(yyDollar[2].labels...)
|
||||
}
|
||||
case 25:
|
||||
yyDollar = yyS[yypt-3 : yypt+1]
|
||||
//line promql/generated_parser.y:193
|
||||
yyDollar = yyS[yypt-4 : yypt+1]
|
||||
//line promql/generated_parser.y:192
|
||||
{
|
||||
yylex.(*parser).errorf("unexpected %v in label set, expected string", yylex.(*parser).token.desc())
|
||||
yyVAL.labels = labels.New(yyDollar[2].labels...)
|
||||
}
|
||||
case 26:
|
||||
yyDollar = yyS[yypt-2 : yypt+1]
|
||||
//line promql/generated_parser.y:195
|
||||
//line promql/generated_parser.y:194
|
||||
{
|
||||
yyVAL.labels = labels.New()
|
||||
}
|
||||
case 27:
|
||||
yyDollar = yyS[yypt-0 : yypt+1]
|
||||
//line promql/generated_parser.y:196
|
||||
{
|
||||
yyVAL.labels = labels.New()
|
||||
}
|
||||
case 28:
|
||||
yyDollar = yyS[yypt-3 : yypt+1]
|
||||
//line promql/generated_parser.y:201
|
||||
{
|
||||
yyVAL.labels = append(yyDollar[1].labels, yyDollar[3].label)
|
||||
}
|
||||
case 29:
|
||||
yyDollar = yyS[yypt-1 : yypt+1]
|
||||
//line promql/generated_parser.y:203
|
||||
{
|
||||
yyVAL.labels = []labels.Label{yyDollar[1].label}
|
||||
}
|
||||
case 30:
|
||||
yyDollar = yyS[yypt-2 : yypt+1]
|
||||
//line promql/generated_parser.y:205
|
||||
{
|
||||
yylex.(*parser).errorf("unexpected %v in label set, expected \",\" or \"}\"", yylex.(*parser).token.desc())
|
||||
}
|
||||
case 31:
|
||||
yyDollar = yyS[yypt-3 : yypt+1]
|
||||
//line promql/generated_parser.y:211
|
||||
{
|
||||
yyVAL.label = labels.Label{Name: yyDollar[1].item.Val, Value: yylex.(*parser).unquoteString(yyDollar[3].item.Val)}
|
||||
}
|
||||
case 32:
|
||||
yyDollar = yyS[yypt-3 : yypt+1]
|
||||
//line promql/generated_parser.y:213
|
||||
{
|
||||
yylex.(*parser).errorf("unexpected %v in label set, expected string", yylex.(*parser).token.desc())
|
||||
}
|
||||
case 33:
|
||||
yyDollar = yyS[yypt-2 : yypt+1]
|
||||
//line promql/generated_parser.y:215
|
||||
{
|
||||
yylex.(*parser).errorf("unexpected %v in label set, expected \"=\"", yylex.(*parser).token.desc())
|
||||
}
|
||||
case 27:
|
||||
case 34:
|
||||
yyDollar = yyS[yypt-1 : yypt+1]
|
||||
//line promql/generated_parser.y:197
|
||||
//line promql/generated_parser.y:217
|
||||
{
|
||||
yylex.(*parser).errorf("unexpected %v in label set, expected identifier or \"}\"", yylex.(*parser).token.desc())
|
||||
}
|
||||
|
|
|
|||
|
|
@ -73,11 +73,7 @@ func ParseMetric(input string) (m labels.Labels, err error) {
|
|||
p := newParser(input)
|
||||
defer p.recover(&err)
|
||||
|
||||
m = p.metric()
|
||||
if p.peek().Typ != EOF {
|
||||
p.errorf("could not parse remaining input %.15q...", p.lex.input[p.lex.lastPos:])
|
||||
}
|
||||
return m, nil
|
||||
return p.parseGenerated(START_METRIC, []ItemType{RIGHT_BRACE, EOF}).(labels.Labels), nil
|
||||
}
|
||||
|
||||
// ParseMetricSelector parses the provided textual metric selector into a list of
|
||||
|
|
|
|||
Loading…
Reference in a new issue