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[PPL] Create ANTLR grammar files for PPL - Phase0 #421

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Apr 9, 2020
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[PPL] Create ANTLR grammar files for PPL - Phase0 #421

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chloe-zh Apr 6, 2020
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Merge branch 'feature/ppl' of github.com:opendistro-for-elasticsearch…
chloe-zh Apr 9, 2020
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Added antlr files
chloe-zh Apr 9, 2020
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256 changes: 256 additions & 0 deletions ppl/src/main/antlr/OpenDistroPPLLexer.g4
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/*
* Copyright 2019 Amazon.com, Inc. or its affiliates. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License").
* You may not use this file except in compliance with the License.
* A copy of the License is located at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* or in the "license" file accompanying this file. This file is distributed
* on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
* express or implied. See the License for the specific language governing
* permissions and limitations under the License.
*/

lexer grammar OpenDistroPPLLexer;

channels { WHITESPACE, ERRORCHANNEL }


// COMMAND KEYWORDS
SEARCH: 'SEARCH';
FROM: 'FROM';
WHERE: 'WHERE';
FIELDS: 'FIELDS';
RENAME: 'RENAME';
STATS: 'STATS';
DEDUP: 'DEDUP';
SORT: 'SORT';
EVAL: 'EVAL';

// COMMAND ASSIST KEYWORDS
AS: 'AS';
BY: 'BY';
SOURCE: 'SOURCE';
INDEX: 'INDEX';
D: 'D';
DESC: 'DESC';

// CLAUSE KEYWORDS
SORTBY: 'SORTBY';

// FIELD KEYWORDS
AUTO: 'AUTO';
STR: 'STR';
IP: 'IP';
NUM: 'NUM';

// ARGUMENT KEYWORDS
KEEPEVENTS: 'KEEPEVENTS';
KEEPEMPTY: 'KEEPEMPTY';
CONSECUTIVE: 'CONSECUTIVE';
DEDUP_SPLITVALUES: 'DEDUP_SPLITVALUES';
PARTITIONS: 'PARTITIONS';
ALLNUM: 'ALLNUM';
DELIM: 'DELIM';

// COMPARISON FUNCTION KEYWORDS
CASE: 'CASE';
IN: 'IN';

// LOGICAL KEYWORDS
NOT: 'NOT';
OR: 'OR';
AND: 'AND';
TRUE: 'TRUE';
FALSE: 'FALSE';

// DATASET TYPES
DATAMODEL: 'DATAMODEL';
LOOKUP: 'LOOKUP';
SAVEDSEARCH: 'SAVEDSEARCH';

// SPECIAL CHARACTERS AND OPERATORS
PIPE: '|';
COMMA: ',';
DOT: '.';
EQUAL: '=';
GREATER: '>';
LESS: '<';
NOT_GREATER: '<' '=';
NOT_LESS: '>' '=';
NOT_EQUAL: '!' '=';
PLUS: '+';
MINUS: '-';
STAR: '*';
DIVIDE: '/';
MODULE: '%';
EXCLAMATION_SYMBOL: '!';
COLON: ':';
LT_PRTHS: '(';
RT_PRTHS: ')';

// AGGREGATIONS
AVG: 'AVG';
COUNT: 'COUNT';
DISTINCT_COUNT: 'DISTINCT_COUNT';
ESTDC: 'ESTDC';
ESTDC_ERROR: 'ESTDC_ERROR';
MAX: 'MAX';
MEAN: 'MEAN';
MEDIAN: 'MEDIAN';
MIN: 'MIN';
MODE: 'MODE';
RANGE: 'RANGE';
STDEV: 'STDEV';
STDEVP: 'STDEVP';
SUM: 'SUM';
SUMSQ: 'SUMSQ';
VAR: 'VAR';
VARP: 'VARP';
PERCENTILE: 'PERCENTILE';
FIRST: 'FIRST';
LAST: 'LAST';
LIST: 'LIST';
VALUES: 'VALUES';
EARLIEST: 'EARLIEST';
EARLIEST_TIME: 'EARLIEST_TIME';
LATEST: 'LATEST';
LATEST_TIME: 'LATEST_TIME';
PER_DAY: 'PER_DAY';
PER_HOUR: 'PER_HOUR';
PER_MINUTE: 'PER_MINUTE';
PER_SECOND: 'PER_SECOND';
RATE: 'RATE';
SPARKLINE: 'SPARKLINE';
C: 'C';
DC: 'DC';

// BASIC FUNCTIONS
ABS: 'ABS';
ACOS: 'ACOS';
ADD: 'ADD';
ADDDATE: 'ADDDATE';
ADDTIME: 'ADDTIME';
ASCII: 'ASCII';
ASIN: 'ASIN';
ATAN: 'ATAN';
ATAN2: 'ATAN2';
CBRT: 'CBRT';
CEIL: 'CEIL';
CONCAT: 'CONCAT';
CONCAT_WS: 'CONCAT_WS';
COS: 'COS';
COSH: 'COSH';
COT: 'COT';
CURDATE: 'CURDATE';
DATE: 'DATE';
DATE_FORMAT: 'DATE_FORMAT';
DAYOFMONTH: 'DAYOFMONTH';
DEGREES: 'DEGREES';
E: 'E';
EXP: 'EXP';
EXPM1: 'EXPM1';
FLOOR: 'FLOOR';
GREATEST: 'GREATEST';
IF: 'IF';
IFNULL: 'IFNULL';
ISNULL: 'ISNULL';
LEAST: 'LEAST';
LEFT: 'LEFT';
LENGTH: 'LENGTH';
LN: 'LN';
LOCATE: 'LOCATE';
LOG: 'LOG';
LOG10: 'LOG10';
LOG2: 'LOG2';
LOWER: 'LOWER';
LTRIM: 'LTRIM';
MAKETIME: 'MAKETIME';
MISSING: 'MISSING';
MODULUS: 'MODULUS';
MONTH: 'MONTH';
MONTHNAME: 'MONTHNAME';
MULTIPLY: 'MULTIPLY';
NOW: 'NOW';
PI: 'PI';
POW: 'POW';
POWER: 'POWER';
RADIANS: 'RADIANS';
RAND: 'RAND';
REPLACE: 'REPLACE';
RIGHT: 'RIGHT';
RINT: 'RINT';
ROUND: 'ROUND';
RTRIM: 'RTRIM';
SIGN: 'SIGN';
SIGNUM: 'SIGNUM';
SIN: 'SIN';
SINH: 'SINH';
SQRT: 'SQRT';
SUBTRACT: 'SUBTRACT';
SUBSTRING: 'SUBSTRING';
TAN: 'TAN';
TIMESTAMP: 'TIMESTAMP';
TRIM: 'TRIM';
UPPER: 'UPPER';
YEAR: 'YEAR';

// ES FUNCTIONS
DATE_HISTOGRAM: 'DATE_HISTOGRAM';
DAY_OF_MONTH: 'DAY_OF_MONTH';
DAY_OF_YEAR: 'DAY_OF_YEAR';
DAY_OF_WEEK: 'DAY_OF_WEEK';
EXCLUDE: 'EXCLUDE';
EXTENDED_STATS: 'EXTENDED_STATS';
FIELD: 'FIELD';
FILTER: 'FILTER';
GEO_BOUNDING_BOX: 'GEO_BOUNDING_BOX';
GEO_CELL: 'GEO_CELL';
GEO_DISTANCE: 'GEO_DISTANCE';
GEO_DISTANCE_RANGE: 'GEO_DISTANCE_RANGE';
GEO_INTERSECTS: 'GEO_INTERSECTS';
GEO_POLYGON: 'GEO_POLYGON';
HISTOGRAM: 'HISTOGRAM';
HOUR_OF_DAY: 'HOUR_OF_DAY';
INCLUDE: 'INCLUDE';
IN_TERMS: 'IN_TERMS';
MATCHPHRASE: 'MATCHPHRASE';
MATCH_PHRASE: 'MATCH_PHRASE';
MATCHQUERY: 'MATCHQUERY';
MATCH_QUERY: 'MATCH_QUERY';
MINUTE_OF_DAY: 'MINUTE_OF_DAY';
MINUTE_OF_HOUR: 'MINUTE_OF_HOUR';
MONTH_OF_YEAR: 'MONTH_OF_YEAR';
MULTIMATCH: 'MULTIMATCH';
MULTI_MATCH: 'MULTI_MATCH';
NESTED: 'NESTED';
PERCENTILES: 'PERCENTILES';
REGEXP_QUERY: 'REGEXP_QUERY';
REVERSE_NESTED: 'REVERSE_NESTED';
QUERY: 'QUERY';
SCORE: 'SCORE';
SECOND_OF_MINUTE: 'SECOND_OF_MINUTE';
TERM: 'TERM';
TERMS: 'TERMS';
TOPHITS: 'TOPHITS';
WEEK_OF_YEAR: 'WEEK_OF_YEAR';
WILDCARDQUERY: 'WILDCARDQUERY';
WILDCARD_QUERY: 'WILDCARD_QUERY';

// LITERALS AND VALUES
STRING_LITERAL: DQUOTA_STRING | SQUOTA_STRING | BQUOTA_STRING;
ID: ID_LITERAL;
DOT_ID: '.' ID;
DECIMAL_LITERAL: DEC_DIGIT+;
// TODO: define WCFIELD

fragment ID_LITERAL: [A-Z_$0-9@]*?[A-Z_$\-]+?[A-Z_$\-0-9]*;
fragment DQUOTA_STRING: '"' ( '\\'. | '""' | ~('"'| '\\') )* '"';
fragment SQUOTA_STRING: '\'' ('\\'. | '\'\'' | ~('\'' | '\\'))* '\'';
fragment BQUOTA_STRING: '`' ( '\\'. | '``' | ~('`'|'\\'))* '`';
fragment DEC_DIGIT: [0-9];


ERROR_RECOGNITION: . -> channel(ERRORCHANNEL);
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