Package de.unkrig.commons.text.expression

A simple expression evaluator which is useful, e.g., for configuration mechanisms.

See:
Description

Interface Summary

Expression

An expression evaluates to a value each time it is evaluated.

Class Summary

AbstractExpression	An implementation of Expression which implements the "evaluateTo*()" convenience methods.
ExpressionEvaluator	Supports two operation modes: Scans, parses and evaluates an expression immediately (see ExpressionEvaluator.evaluate(String, Mapping)) Scans and parses an expression (see ExpressionEvaluator.parse(String)) into an Expression object for repeated evaluation (see Expression.evaluate(Mapping)).
ExpressionUtil	Utility class for Expression.
Parser<T,E extends Exception>	Parses an expression like s == "abc" && (c == 'b' || !
Scanner	The scanner for the ExpressionEvaluator.

Enum Summary

Parser.BinaryOperator	Representation of all binary operators.
Parser.UnaryOperator	Representation of all unary operators.
Scanner.TokenType	Token types for the ExpressionEvaluator scanner.

Exception Summary

EvaluationException

Indicates a problem that has occurred while an expressin was evaluated.

Package de.unkrig.commons.text.expression Description

A simple expression evaluator which is useful, e.g., for configuration mechanisms.