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Improve Painless compilation performance for nested conditionals #52056

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Feb 7, 2020
Merged

Improve Painless compilation performance for nested conditionals #52056

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c7c6cef
Improve Painless compilation performance for nested conditionals
probakowski Feb 7, 2020
f76bd64
Merge branch 'master' into painless-ternary-fix
elasticmachine Feb 7, 2020
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40 changes: 22 additions & 18 deletions modules/lang-painless/src/main/antlr/PainlessParser.g4
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Original file line number Diff line number Diff line change
Expand Up @@ -98,25 +98,29 @@ trap
: CATCH LP TYPE ID RP block
;

noncondexpression
: unary # single
| noncondexpression ( MUL | DIV | REM ) noncondexpression # binary
| noncondexpression ( ADD | SUB ) noncondexpression # binary
| noncondexpression ( FIND | MATCH ) noncondexpression # binary
| noncondexpression ( LSH | RSH | USH ) noncondexpression # binary
| noncondexpression ( LT | LTE | GT | GTE ) noncondexpression # comp
| noncondexpression INSTANCEOF decltype # instanceof
| noncondexpression ( EQ | EQR | NE | NER ) noncondexpression # comp
| noncondexpression BWAND noncondexpression # binary
| noncondexpression XOR noncondexpression # binary
| noncondexpression BWOR noncondexpression # binary
| noncondexpression BOOLAND noncondexpression # bool
| noncondexpression BOOLOR noncondexpression # bool
| <assoc=right> noncondexpression ELVIS noncondexpression # elvis
;

expression
: unary # single
| expression ( MUL | DIV | REM ) expression # binary
| expression ( ADD | SUB ) expression # binary
| expression ( FIND | MATCH ) expression # binary
| expression ( LSH | RSH | USH ) expression # binary
| expression ( LT | LTE | GT | GTE ) expression # comp
| expression INSTANCEOF decltype # instanceof
| expression ( EQ | EQR | NE | NER ) expression # comp
| expression BWAND expression # binary
| expression XOR expression # binary
| expression BWOR expression # binary
| expression BOOLAND expression # bool
| expression BOOLOR expression # bool
| <assoc=right> expression COND expression COLON expression # conditional
| <assoc=right> expression ELVIS expression # elvis
| <assoc=right> expression ( ASSIGN | AADD | ASUB | AMUL |
ADIV | AREM | AAND | AXOR |
AOR | ALSH | ARSH | AUSH ) expression # assignment
: noncondexpression # nonconditional
| <assoc=right> noncondexpression COND expression COLON expression # conditional
| <assoc=right> noncondexpression ( ASSIGN | AADD | ASUB | AMUL |
ADIV | AREM | AAND | AXOR |
AOR | ALSH | ARSH | AUSH ) expression # assignment
;

unary
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16 changes: 6 additions & 10 deletions modules/lang-painless/src/main/java/org/elasticsearch/painless/antlr/PainlessLexer.java
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@@ -1,17 +1,13 @@
// ANTLR GENERATED CODE: DO NOT EDIT
package org.elasticsearch.painless.antlr;

import org.antlr.v4.runtime.CharStream;
import org.antlr.v4.runtime.Lexer;
import org.antlr.v4.runtime.RuleContext;
import org.antlr.v4.runtime.RuntimeMetaData;
import org.antlr.v4.runtime.Vocabulary;
import org.antlr.v4.runtime.VocabularyImpl;
import org.antlr.v4.runtime.atn.ATN;
import org.antlr.v4.runtime.atn.ATNDeserializer;
import org.antlr.v4.runtime.atn.LexerATNSimulator;
import org.antlr.v4.runtime.atn.PredictionContextCache;
import org.antlr.v4.runtime.CharStream;
import org.antlr.v4.runtime.Token;
import org.antlr.v4.runtime.TokenStream;
import org.antlr.v4.runtime.*;
import org.antlr.v4.runtime.atn.*;
import org.antlr.v4.runtime.dfa.DFA;
import org.antlr.v4.runtime.misc.*;

@SuppressWarnings({"all", "warnings", "unchecked", "unused", "cast"})
abstract class PainlessLexer extends Lexer {
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