pivotql-parser-expression

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.