Unit 'fpexprpars'	Package
[Overview][Constants][Types][Classes][Procedures and functions][Index]	[#fcl]

Reference for unit 'fpexprpars'

Provides expression parsing with support for variables, functions, and mathematical operations

`uses`
`System,`
`Classes,`
`sysutils,`
`Contnrs;`		Various general purpose classes: stack, queue, objectlists.

Overview

This unit implements an expression parser and evaluator that supports a wide variety of data types, mathematical operations, and built-in functions. It provides the infrastructure for parsing and evaluating mathematical expressions with support for variables, functions, and complex data types.

The parser supports the following features:

Multiple data types: integers, floats, strings, booleans, dates, and currency
Standard mathematical operators: +, -, *, /, mod, power
Comparison operators: =, <>, <, >, <=, >=
Logical operators: and, or, xor, not
Built-in mathematical, string, and date/time functions comparable to what exists in the SysUtils unit.
Variable and function definitions
Conditional expressions (if-then-else)
Aggregate functions for data processing

The unit is designed to be extensible, allowing custom functions and variables to be registered with the parser for specialized applications.