bool-expr-generator

A simple generator of boolean expressions.

Installation

NPM

npm install --save bool-expr-generator

Usage

importBoolExprfrom'bool-expr-generator';constboolGenerator=newBoolExpr();constexpr=boolGenerator.generate();// 'true && false'// You may pass an option object to the constructorconstboolGenerator=newBoolExpr({complexity: 3,operators: ["||","&&","^"],operatorsDisplayed: {"^": "XOR","&&": "AND","||": "OR"},logicalValues: [true,false,0,1],invertedValue: true,});constexpr=boolGenerator.generate();// 'false XOR 1 OR true'// If cou customised the operatorsDisplayed option you can use the convert method to convert the expression into an evaluable oneconsole.log(boolGenerator.convert(expr));// 'false ^ 1 || true'// Update options:boolGenerator.options({complexity: 4});console.log(boolGenerator.generate());// true XOR 1 AND !0 OR !0// You can also use a nested expression with or without its own optionsconstboolGenerator=newBoolExpr({logicalValues: [true,false,BoolExpr.nestedExpr({complexity: 2,logicalValues: [0,1]})],// Note that it is advised to specify the logicalValues});constexpr=boolGenerator.generate();// 'false && (0 || 1)'

Option object

Key	Type	Default	Example	Description
complexity	integer | Array<integer>	2	3 | [2, 4]	Length of the expression, if an array is supplied the complexity will be a random value of it
operators	Array<string>	['||', '&&']	['||', '&&', '^']	The logical operators to be used
operatorsDisplayed	Object	{}	{'^': 'XOR'}	How the operators will be displayed in the expresssion
logicalValues	Array	[true, false]	[0, 1, true, false]	The logical values that can be included into the expression
invertedValue	boolean | float	false	true | .3	Whether to add the inverted logical values or probability to have an inverted value for each logical values