├── .gitignore ├── .idea ├── misc.xml ├── runConfigurations.xml ├── uiDesigner.xml └── vcs.xml ├── README.md ├── gradle.properties ├── gradle └── wrapper │ └── gradle-wrapper.properties ├── settings.gradle └── src ├── main ├── antlr │ ├── Sift.g4 │ └── Sift.v1.g4.ignore ├── java │ └── com │ │ └── rchowell │ │ └── sift │ │ └── language │ │ └── v0 │ │ └── antlr │ │ ├── Sift.interp │ │ ├── Sift.tokens │ │ ├── SiftBaseVisitor.java │ │ ├── SiftLexer.interp │ │ ├── SiftLexer.java │ │ ├── SiftLexer.tokens │ │ ├── SiftParser.java │ │ └── SiftVisitor.java └── kotlin │ └── com │ └── rchowell │ └── sift │ ├── execution │ ├── Environment.kt │ ├── Executor.kt │ ├── logical │ │ ├── LogicalExpr.kt │ │ ├── LogicalTransform.kt │ │ ├── expressions │ │ │ ├── LogicalAggregateExpr.kt │ │ │ ├── LogicalBinaryExpr.kt │ │ │ ├── LogicalIdentifierExpr.kt │ │ │ ├── LogicalLiteralExpr.kt │ │ │ └── Ops.kt │ │ ├── functions │ │ │ └── LogicalFunction.kt │ │ └── transforms │ │ │ ├── LogicalAggregation.kt │ │ │ ├── LogicalCross.kt │ │ │ ├── LogicalDiff.kt │ │ │ ├── LogicalDistinct.kt │ │ │ ├── LogicalIntersect.kt │ │ │ ├── LogicalJoin.kt │ │ │ ├── LogicalLimit.kt │ │ │ ├── LogicalProjection.kt │ │ │ ├── LogicalScan.kt │ │ │ ├── LogicalSelection.kt │ │ │ ├── LogicalSort.kt │ │ │ └── LogicalUnion.kt │ ├── physical │ │ ├── aggregations │ │ │ ├── Accumulator.kt │ │ │ └── Key.kt │ │ ├── expressions │ │ │ ├── BinaryExpr.kt │ │ │ ├── ColumnExpr.kt │ │ │ ├── Expression.kt │ │ │ └── LiteralExpr.kt │ │ └── sifterators │ │ │ ├── Aggregation.kt │ │ │ ├── Distinct.kt │ │ │ ├── Limit.kt │ │ │ ├── Projection.kt │ │ │ ├── Scan.kt │ │ │ ├── Selection.kt │ │ │ └── Sifterator.kt │ └── planner │ │ └── Planner.kt │ ├── language │ ├── README.md │ ├── SiftLexer.kt │ ├── SiftParser.kt │ ├── v0 │ │ ├── README.md │ │ ├── Tokens.kt │ │ ├── antlr │ │ │ ├── SiftAntlrVisitor.kt │ │ │ ├── SiftCompiler.kt │ │ │ ├── SiftErrorListener.kt │ │ │ └── SiftVisitorBuildState.kt │ │ ├── lexers │ │ │ └── DirectCodedLexer.kt │ │ └── parsers │ │ │ └── rd │ │ │ ├── NaiveRecursiveDescentParser.kt │ │ │ └── RecursiveDescentParser.kt │ └── v1 │ │ ├── REAMDE.md │ │ └── ast │ │ ├── Expr.kt │ │ └── Node.kt │ ├── shell │ ├── Context.kt │ ├── Main.kt │ ├── ShellModule.kt │ ├── SiftHighlighter.kt │ ├── SiftLineParser.kt │ ├── SiftRunner.kt │ ├── commands │ │ ├── DebugGroup.kt │ │ ├── DescribeCommand.kt │ │ ├── ListCommand.kt │ │ ├── SetCommand.kt │ │ └── SiftRootCommand.kt │ └── kosh │ │ ├── CommandGroup.kt │ │ ├── RootCommand.kt │ │ ├── Runner.kt │ │ └── Shell.kt │ ├── source │ ├── CsvSource.kt │ ├── EmptySource.kt │ ├── MemSource.kt │ └── Source.kt │ └── types │ ├── Batch.kt │ ├── Column.kt │ ├── Field.kt │ ├── Schema.kt │ └── Type.kt └── test └── kotlin └── com └── rchowell └── sift ├── execution ├── ExecutorTest.kt ├── physical │ ├── aggregations │ │ └── KeyTest.kt │ ├── expressions │ │ └── PhysicalAddExprTest.kt │ └── sifterators │ │ ├── AggregationTest.kt │ │ ├── DistinctTest.kt │ │ ├── LimitTest.kt │ │ ├── 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