JLSP: A Lightweight Linear-Time Java Parser

JLSP is an adaptable and efficient Java parser designed for processing mathematical expressions. With a compact footprint of approximately 40kb, this parser excels in speed and functionality, ensuring linear-time operations for enhanced performance.

Key Features

• Custom Operators & Functions: Easily define and implement custom operators and user-defined functions tailored to specific requirements.
• Variable Handling: Supports replaceable variables, allowing any character that isn't a number or delimiter to be treated as a variable, which can be assigned values dynamically.

Quick Start Example

A straightforward example demonstrates the parser's capabilities:

Parser parser = new Parser();
Formula formula = parser.parse("17.43+((3.5+2.1*(7-4%3))^2.3)/((6+4.2+(8%5)))");
System.out.println(formula.inOperationOrderResult());

For convenience, the StaticParser class can be employed for a global parser setup:

Formula formula = StaticParser.parse("17.43+((3.5+2.1*(7-4%3))^2.3)/((6+4.2+(8%5)))");
System.out.println(formula.inOperationOrderResult());

Custom Variables

The parser allows the creation of custom variables and setting their values as follows:

Formula f = ParserStatic.parse("-4+ab+1.7*(k+a)");
// Assign values to variables in the order they appear
f.setVariables(4, 8, 3);

Extending the Parser

Custom operators and functions can be defined to expand the parser's capabilities. For instance:

addOperator('^', (a, b, extra) -> Math.pow(Math.abs(a), b), 10);
addFunction("sqrt", (caller, inOperationOrder, a) -> Math.sqrt(processEntity(caller, a[0], inOperationOrder)));

Additional Configurations

JLSP supports extensive configuration options to fine-tune parsing behavior:

• Custom Delimiters: Define custom delimiters and comma characters.
• Parsing Logic: Replace default parsing logic with custom implementations suited for unique needs.

For comprehensive documentation and additional capabilities, refer to the Javadocs.

Explore the potential of JLSP to enhance parsing efficiency and customize it according to specific application requirements.