Description
TPSCExprEval class implements methods for parsing and evaluating advanced expressions. You can compose expressions using variety of arithmetic operations, string functions, date-time functions and additional SQL clauses ( IN, LIKE clauses ). TPSCExprEval supports ANSII SQL-92 standard for LIKE clauses. Using methods of the class you can process comparisons with complex text mask. You can include '%', '_', '^' wildcards and variety of char sets (including/excluding). TPSCExprEval class allow you to compose restrictions using data from memo fields. In such case you can treat memo fields as long string variables and apply any string functions and operations for them.
