PromQL: Parse grouping opts with the generated parser (#6472)
* PromQL: Parse grouping opts with the generated parser Signed-off-by: Tobias Guggenmos <tguggenm@redhat.com>
This commit is contained in:
Tobias Guggenmos
Brian Brazil
parent
f174ae1f09
commit
9e34f08ac3
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@ -28,6 +28,7 @@
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matcher *labels.Matcher
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label labels.Label
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labels labels.Labels
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strings []string
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}
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@ -108,15 +109,17 @@
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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 START_GROUPING_LABELS
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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 metric_identifier
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%type <item> match_op metric_identifier grouping_label maybe_label
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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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%type <strings> grouping_labels grouping_label_list
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%start start
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@ -128,6 +131,8 @@ start : START_LABELS label_matchers
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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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| START_GROUPING_LABELS grouping_labels
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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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;
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@ -217,7 +222,63 @@ label_set_item :
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{ yylex.(*parser).errorf("unexpected %v in label set, expected identifier or \"}\"", yylex.(*parser).token.desc()) }
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;
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grouping_labels :
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LEFT_PAREN grouping_label_list RIGHT_PAREN
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{ $$ = $2 }
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| LEFT_PAREN RIGHT_PAREN
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{ $$ = []string{} }
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| error
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{ yylex.(*parser).errorf("unexpected %v in grouping opts, expected \"(\"", yylex.(*parser).token.desc()) }
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;
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grouping_label_list:
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grouping_label_list COMMA grouping_label
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{ $$ = append($1, $3.Val) }
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| grouping_label
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{ $$ = []string{$1.Val} }
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| grouping_label_list error
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{ yylex.(*parser).errorf("unexpected %v in grouping opts, expected \",\" or \"}\"", yylex.(*parser).token.desc()) }
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;
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grouping_label :
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maybe_label
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{
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if !isLabel($1.Val) {
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yylex.(*parser).errorf("unexpected %s in grouping opts, expected label", $1.desc())
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}
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$$ = $1
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}
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| error
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{ yylex.(*parser).errorf("unexpected %s in grouping opts, expected label", yylex.(*parser).token.desc()) }
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;
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/* inside of grouping options label names can be recognized as keywords by the lexer */
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maybe_label :
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IDENTIFIER
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| METRIC_IDENTIFIER
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| LAND
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| LOR
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| LUNLESS
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| AVG
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| COUNT
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| SUM
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| MIN
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| MAX
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| STDDEV
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| STDVAR
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| TOPK
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| BOTTOMK
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| COUNT_VALUES
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| QUANTILE
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| OFFSET
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| BY
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| ON
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| IGNORING
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| GROUP_LEFT
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| GROUP_RIGHT
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| BOOL
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;
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%%
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@ -22,6 +22,7 @@ type yySymType struct {
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matcher *labels.Matcher
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label labels.Label
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labels labels.Labels
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strings []string
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}
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const ERROR = 57346
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@ -91,7 +92,8 @@ 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 START_METRIC = 57412
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const startSymbolsEnd = 57413
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const START_GROUPING_LABELS = 57413
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const startSymbolsEnd = 57414
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var yyToknames = [...]string{
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"$end",
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@ -164,6 +166,7 @@ var yyToknames = [...]string{
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"START_LABELS",
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"START_LABEL_SET",
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"START_METRIC",
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"START_GROUPING_LABELS",
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"startSymbolsEnd",
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}
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var yyStatenames = [...]string{}
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@ -172,7 +175,7 @@ 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:223
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//line promql/generated_parser.y:284
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//line yacctab:1
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var yyExca = [...]int{
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@ -180,66 +183,89 @@ var yyExca = [...]int{
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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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1, 28,
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-2, 0,
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}
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const yyPrivate = 57344
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const yyLast = 69
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const yyLast = 117
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var yyAct = [...]int{
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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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35, 6, 33, 27, 72, 36, 37, 83, 32, 79,
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22, 29, 75, 24, 10, 8, 28, 29, 23, 1,
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73, 80, 28, 76, 82, 74, 78, 26, 24, 38,
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39, 40, 19, 23, 31, 35, 71, 17, 21, 18,
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36, 37, 11, 41, 42, 43, 44, 45, 46, 47,
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48, 49, 50, 51, 25, 34, 52, 53, 12, 54,
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55, 56, 57, 58, 38, 39, 40, 2, 3, 4,
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5, 77, 63, 81, 62, 20, 7, 84, 41, 42,
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43, 44, 45, 46, 47, 48, 49, 50, 51, 70,
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61, 52, 53, 0, 54, 55, 56, 57, 58, 68,
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59, 9, 69, 60, 64, 65, 13, 14, 0, 0,
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66, 67, 16, 15, 30, 0, 10,
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}
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var yyPact = [...]int{
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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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-1, -1000, 4, 3, 105, 30, -1000, -1000, 26, -1000,
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15, -1000, 3, -1000, -1000, -1000, -1000, -1000, -2, -1000,
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88, -1000, -1000, 70, -1000, 87, -1000, -1000, 2, -1000,
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-1000, 10, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000,
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-1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000,
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-1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000,
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11, -1000, 7, -1000, -1000, -1000, -1000, -1000, -1000, 9,
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-1000, 5, -1000, -1000, 33, -1000, -1000, -1000, -1000, -1000,
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-1000, -1000, -1000, -1000, -1000,
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}
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var yyPgo = [...]int{
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0, 28, 26, 2, 24, 16, 15, 42, 13, 3,
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10,
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0, 76, 75, 10, 74, 58, 2, 55, 54, 101,
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42, 3, 37, 34, 19,
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}
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var yyR1 = [...]int{
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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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0, 14, 14, 14, 14, 14, 1, 1, 1, 2,
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2, 2, 3, 3, 3, 3, 4, 4, 4, 4,
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10, 10, 10, 5, 5, 9, 9, 9, 9, 8,
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8, 8, 11, 11, 11, 11, 12, 12, 12, 13,
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13, 13, 6, 6, 7, 7, 7, 7, 7, 7,
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7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
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7, 7, 7, 7, 7, 7, 7,
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}
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var yyR2 = [...]int{
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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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0, 2, 2, 2, 2, 1, 3, 4, 2, 3,
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1, 2, 3, 3, 2, 1, 1, 1, 1, 1,
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2, 1, 1, 1, 1, 3, 4, 2, 0, 3,
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1, 2, 3, 3, 2, 1, 3, 2, 1, 3,
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1, 2, 1, 1, 1, 1, 1, 1, 1, 1,
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1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
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1, 1, 1, 1, 1, 1, 1,
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}
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var yyChk = [...]int{
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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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-1000, -14, 68, 69, 70, 71, 2, -1, 11, -9,
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11, -10, -5, -9, 2, 8, 7, -12, 9, 2,
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-2, 12, -3, 7, 2, -8, 12, -11, 7, 2,
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-9, -13, 10, -6, -7, 2, 7, 8, 31, 32,
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33, 45, 46, 47, 48, 49, 50, 51, 52, 53,
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54, 55, 58, 59, 61, 62, 63, 64, 65, 12,
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15, 2, -4, 2, 34, 35, 40, 41, 12, 15,
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2, 34, 2, 10, 15, 2, 12, -3, 19, 2,
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12, -11, 19, 2, -6,
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}
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var yyDef = [...]int{
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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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0, -2, 0, 28, -2, 0, 5, 1, 0, 2,
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0, 3, 28, 21, 22, 23, 24, 4, 0, 38,
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0, 8, 10, 0, 15, 0, 27, 30, 0, 35,
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20, 0, 37, 40, 42, 43, 44, 45, 46, 47,
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48, 49, 50, 51, 52, 53, 54, 55, 56, 57,
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58, 59, 60, 61, 62, 63, 64, 65, 66, 6,
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0, 11, 0, 14, 16, 17, 18, 19, 25, 0,
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31, 0, 34, 36, 0, 41, 7, 9, 12, 13,
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26, 29, 32, 33, 39,
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}
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var yyTok1 = [...]int{
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@ -254,6 +280,7 @@ var yyTok2 = [...]int{
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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, 71,
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72,
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}
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var yyTok3 = [...]int{
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0,
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@ -598,209 +625,266 @@ 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:126
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//line promql/generated_parser.y:129
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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:128
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//line promql/generated_parser.y:131
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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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//line promql/generated_parser.y:133
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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-2 : yypt+1]
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//line promql/generated_parser.y:135
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{
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yylex.(*parser).generatedParserResult = yyDollar[2].strings
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}
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case 5:
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yyDollar = yyS[yypt-1 : yypt+1]
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//line promql/generated_parser.y:132
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//line promql/generated_parser.y:137
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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 5:
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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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yyDollar = yyS[yypt-3 : yypt+1]
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//line promql/generated_parser.y:143
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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-4 : yypt+1]
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//line promql/generated_parser.y:145
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{
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yyVAL.matchers = yyDollar[2].matchers
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}
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case 8:
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yyDollar = yyS[yypt-2 : yypt+1]
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//line promql/generated_parser.y:142
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//line promql/generated_parser.y:147
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{
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yyVAL.matchers = []*labels.Matcher{}
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}
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case 8:
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case 9:
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yyDollar = yyS[yypt-3 : yypt+1]
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//line promql/generated_parser.y:148
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//line promql/generated_parser.y:153
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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 9:
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case 10:
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yyDollar = yyS[yypt-1 : yypt+1]
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//line promql/generated_parser.y:150
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//line promql/generated_parser.y:155
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{
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yyVAL.matchers = []*labels.Matcher{yyDollar[1].matcher}
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}
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case 10:
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case 11:
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yyDollar = yyS[yypt-2 : yypt+1]
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//line promql/generated_parser.y:152
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//line promql/generated_parser.y:157
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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 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:157
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//line promql/generated_parser.y:162
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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 12:
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case 13:
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yyDollar = yyS[yypt-3 : yypt+1]
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//line promql/generated_parser.y:159
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//line promql/generated_parser.y:164
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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 13:
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case 14:
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yyDollar = yyS[yypt-2 : yypt+1]
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//line promql/generated_parser.y:161
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//line promql/generated_parser.y:166
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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 14:
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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:163
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//line promql/generated_parser.y:168
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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 15:
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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 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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//line promql/generated_parser.y:172
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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:169
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//line promql/generated_parser.y:173
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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
|
||||
//line promql/generated_parser.y:174
|
||||
{
|
||||
yyVAL.item = yyDollar[1].item
|
||||
}
|
||||
case 19:
|
||||
yyDollar = yyS[yypt-1 : yypt+1]
|
||||
//line promql/generated_parser.y:175
|
||||
{
|
||||
yyVAL.item = yyDollar[1].item
|
||||
}
|
||||
case 20:
|
||||
yyDollar = yyS[yypt-2 : yypt+1]
|
||||
//line promql/generated_parser.y:176
|
||||
//line promql/generated_parser.y:181
|
||||
{
|
||||
yyVAL.labels = append(yyDollar[2].labels, labels.Label{Name: labels.MetricName, Value: yyDollar[1].item.Val})
|
||||
sort.Sort(yyVAL.labels)
|
||||
}
|
||||
case 20:
|
||||
yyDollar = yyS[yypt-1 : yypt+1]
|
||||
//line promql/generated_parser.y:178
|
||||
{
|
||||
yyVAL.labels = yyDollar[1].labels
|
||||
}
|
||||
case 21:
|
||||
yyDollar = yyS[yypt-1 : yypt+1]
|
||||
//line promql/generated_parser.y:180
|
||||
//line promql/generated_parser.y:183
|
||||
{
|
||||
yylex.(*parser).errorf("missing metric name or metric selector")
|
||||
yyVAL.labels = yyDollar[1].labels
|
||||
}
|
||||
case 22:
|
||||
yyDollar = yyS[yypt-1 : yypt+1]
|
||||
//line promql/generated_parser.y:185
|
||||
{
|
||||
yyVAL.item = yyDollar[1].item
|
||||
yylex.(*parser).errorf("missing metric name or metric selector")
|
||||
}
|
||||
case 23:
|
||||
yyDollar = yyS[yypt-1 : yypt+1]
|
||||
//line promql/generated_parser.y:186
|
||||
//line promql/generated_parser.y:190
|
||||
{
|
||||
yyVAL.item = yyDollar[1].item
|
||||
}
|
||||
case 24:
|
||||
yyDollar = yyS[yypt-3 : yypt+1]
|
||||
//line promql/generated_parser.y:190
|
||||
yyDollar = yyS[yypt-1 : yypt+1]
|
||||
//line promql/generated_parser.y:191
|
||||
{
|
||||
yyVAL.labels = labels.New(yyDollar[2].labels...)
|
||||
yyVAL.item = yyDollar[1].item
|
||||
}
|
||||
case 25:
|
||||
yyDollar = yyS[yypt-4 : yypt+1]
|
||||
//line promql/generated_parser.y:192
|
||||
yyDollar = yyS[yypt-3 : yypt+1]
|
||||
//line promql/generated_parser.y:195
|
||||
{
|
||||
yyVAL.labels = labels.New(yyDollar[2].labels...)
|
||||
}
|
||||
case 26:
|
||||
yyDollar = yyS[yypt-2 : yypt+1]
|
||||
//line promql/generated_parser.y:194
|
||||
yyDollar = yyS[yypt-4 : yypt+1]
|
||||
//line promql/generated_parser.y:197
|
||||
{
|
||||
yyVAL.labels = labels.New()
|
||||
yyVAL.labels = labels.New(yyDollar[2].labels...)
|
||||
}
|
||||
case 27:
|
||||
yyDollar = yyS[yypt-0 : yypt+1]
|
||||
//line promql/generated_parser.y:196
|
||||
yyDollar = yyS[yypt-2 : yypt+1]
|
||||
//line promql/generated_parser.y:199
|
||||
{
|
||||
yyVAL.labels = labels.New()
|
||||
}
|
||||
case 28:
|
||||
yyDollar = yyS[yypt-3 : yypt+1]
|
||||
yyDollar = yyS[yypt-0 : yypt+1]
|
||||
//line promql/generated_parser.y:201
|
||||
{
|
||||
yyVAL.labels = labels.New()
|
||||
}
|
||||
case 29:
|
||||
yyDollar = yyS[yypt-3 : yypt+1]
|
||||
//line promql/generated_parser.y:206
|
||||
{
|
||||
yyVAL.labels = append(yyDollar[1].labels, yyDollar[3].label)
|
||||
}
|
||||
case 29:
|
||||
case 30:
|
||||
yyDollar = yyS[yypt-1 : yypt+1]
|
||||
//line promql/generated_parser.y:203
|
||||
//line promql/generated_parser.y:208
|
||||
{
|
||||
yyVAL.labels = []labels.Label{yyDollar[1].label}
|
||||
}
|
||||
case 30:
|
||||
case 31:
|
||||
yyDollar = yyS[yypt-2 : yypt+1]
|
||||
//line promql/generated_parser.y:205
|
||||
//line promql/generated_parser.y:210
|
||||
{
|
||||
yylex.(*parser).errorf("unexpected %v in label set, expected \",\" or \"}\"", yylex.(*parser).token.desc())
|
||||
}
|
||||
case 31:
|
||||
case 32:
|
||||
yyDollar = yyS[yypt-3 : yypt+1]
|
||||
//line promql/generated_parser.y:211
|
||||
//line promql/generated_parser.y:216
|
||||
{
|
||||
yyVAL.label = labels.Label{Name: yyDollar[1].item.Val, Value: yylex.(*parser).unquoteString(yyDollar[3].item.Val)}
|
||||
}
|
||||
case 32:
|
||||
case 33:
|
||||
yyDollar = yyS[yypt-3 : yypt+1]
|
||||
//line promql/generated_parser.y:213
|
||||
//line promql/generated_parser.y:218
|
||||
{
|
||||
yylex.(*parser).errorf("unexpected %v in label set, expected string", yylex.(*parser).token.desc())
|
||||
}
|
||||
case 33:
|
||||
case 34:
|
||||
yyDollar = yyS[yypt-2 : yypt+1]
|
||||
//line promql/generated_parser.y:215
|
||||
//line promql/generated_parser.y:220
|
||||
{
|
||||
yylex.(*parser).errorf("unexpected %v in label set, expected \"=\"", yylex.(*parser).token.desc())
|
||||
}
|
||||
case 34:
|
||||
case 35:
|
||||
yyDollar = yyS[yypt-1 : yypt+1]
|
||||
//line promql/generated_parser.y:217
|
||||
//line promql/generated_parser.y:222
|
||||
{
|
||||
yylex.(*parser).errorf("unexpected %v in label set, expected identifier or \"}\"", yylex.(*parser).token.desc())
|
||||
}
|
||||
case 36:
|
||||
yyDollar = yyS[yypt-3 : yypt+1]
|
||||
//line promql/generated_parser.y:227
|
||||
{
|
||||
yyVAL.strings = yyDollar[2].strings
|
||||
}
|
||||
case 37:
|
||||
yyDollar = yyS[yypt-2 : yypt+1]
|
||||
//line promql/generated_parser.y:229
|
||||
{
|
||||
yyVAL.strings = []string{}
|
||||
}
|
||||
case 38:
|
||||
yyDollar = yyS[yypt-1 : yypt+1]
|
||||
//line promql/generated_parser.y:231
|
||||
{
|
||||
yylex.(*parser).errorf("unexpected %v in grouping opts, expected \"(\"", yylex.(*parser).token.desc())
|
||||
}
|
||||
case 39:
|
||||
yyDollar = yyS[yypt-3 : yypt+1]
|
||||
//line promql/generated_parser.y:237
|
||||
{
|
||||
yyVAL.strings = append(yyDollar[1].strings, yyDollar[3].item.Val)
|
||||
}
|
||||
case 40:
|
||||
yyDollar = yyS[yypt-1 : yypt+1]
|
||||
//line promql/generated_parser.y:239
|
||||
{
|
||||
yyVAL.strings = []string{yyDollar[1].item.Val}
|
||||
}
|
||||
case 41:
|
||||
yyDollar = yyS[yypt-2 : yypt+1]
|
||||
//line promql/generated_parser.y:241
|
||||
{
|
||||
yylex.(*parser).errorf("unexpected %v in grouping opts, expected \",\" or \"}\"", yylex.(*parser).token.desc())
|
||||
}
|
||||
case 42:
|
||||
yyDollar = yyS[yypt-1 : yypt+1]
|
||||
//line promql/generated_parser.y:246
|
||||
{
|
||||
if !isLabel(yyDollar[1].item.Val) {
|
||||
yylex.(*parser).errorf("unexpected %s in grouping opts, expected label", yyDollar[1].item.desc())
|
||||
}
|
||||
yyVAL.item = yyDollar[1].item
|
||||
}
|
||||
case 43:
|
||||
yyDollar = yyS[yypt-1 : yypt+1]
|
||||
//line promql/generated_parser.y:253
|
||||
{
|
||||
yylex.(*parser).errorf("unexpected %s in grouping opts, expected label", yylex.(*parser).token.desc())
|
||||
}
|
||||
}
|
||||
goto yystack /* stack new state and value */
|
||||
}
|
||||
|
|
|
|||
|
|
@ -123,6 +123,10 @@ func (i ItemType) isRightAssociative() bool {
|
|||
|
||||
type ItemType int
|
||||
|
||||
// This is a list of all keywords in PromQL.
|
||||
// When changing this list, make sure to also change
|
||||
// the maybe_label grammar rule in the generated parser
|
||||
// to avoid misinterpretation of labels as keywords.
|
||||
var key = map[string]ItemType{
|
||||
// Operators.
|
||||
"and": LAND,
|
||||
|
|
|
|||
|
|
@ -674,28 +674,7 @@ func (p *parser) primaryExpr() Expr {
|
|||
// '(' <label_name>, ... ')'
|
||||
//
|
||||
func (p *parser) labels() []string {
|
||||
const ctx = "grouping opts"
|
||||
|
||||
p.expect(LEFT_PAREN, ctx)
|
||||
|
||||
labels := []string{}
|
||||
if p.peek().Typ != RIGHT_PAREN {
|
||||
for {
|
||||
id := p.next()
|
||||
if !isLabel(id.Val) {
|
||||
p.errorf("unexpected %s in %s, expected label", id.desc(), ctx)
|
||||
}
|
||||
labels = append(labels, id.Val)
|
||||
|
||||
if p.peek().Typ != COMMA {
|
||||
break
|
||||
}
|
||||
p.next()
|
||||
}
|
||||
}
|
||||
p.expect(RIGHT_PAREN, ctx)
|
||||
|
||||
return labels
|
||||
return p.parseGenerated(START_GROUPING_LABELS, []ItemType{RIGHT_PAREN, EOF}).([]string)
|
||||
}
|
||||
|
||||
// aggrExpr parses an aggregation expression.
|
||||
|
|
|
|||
Loading…
Reference in New Issue