PivotQL expression parser

Parses simple expression to generate PivotQL ASTs.

Install

npm install pivotql-compiler-mongodb

Example

import parse from 'pivotql-parser-expression';
import compile from 'pivotql-compiler-mongodb';

const query = '( height <= 20 or favorites.color == "green" ) and firstname in ["john", "doug"]';

const parsed = parse(query)

// parsed can be consumed by any pivotql compiler

Expression Query Syntax

| Values | Description | | --------------- | -------------------------------------------------------- | | 43, -1.234 | Numbers | | true, false | Booleans | | null, undefined | Primitives | | "hello" | Strings | | foo, a.b.c | Symbols (usually a key or column name in your datastore) |

| Operators | Description | | --------- | ------------------------------ | | x == y | Equality | | x != y | Ineqaulity | | x ~= "y" | Matching evaluated as a RegExp | | x < y | Less than | | x <= y | Less than or equal to | | x > y | Greater than | | x >= y | Greater than or equal to | | x or y | Boolean or | | x and y | Boolean and | | not x | Boolean not | | ( x ) | Expression |

Operator precedence follows that of any sane language.

More information

See main repository for more information.