Declaration¶
Source position: fpexprpars.pp line 216
type
TFPOrderingOperation = class(TFPBooleanResultOperation)
public
procedure Check;
end;
Description¶
The TFPOrderingOperation class is the base class for comparison operations that determine the ordering relationship between two values. It extends TFPBooleanResultOperation to provide the foundation for less-than, greater-than, and related comparison operations.
The class handles the common aspects of ordering comparisons such as type checking and ensuring that the operands can be meaningfully compared. It provides the framework for operations that determine relative order rather than equality.
Derived classes implement specific ordering operations like <, >, <=, and >= while leveraging the common ordering infrastructure for validation and type management.
This class is used internally by the TFPExpressionParser class to construct an AST (Abstract Syntax Tree). There is normally no need for you to use or instantiate this class directly.
Methods¶
| Member | Visibility | Description |
|---|---|---|
| Check | public | Validate the ordering operation for correctness |
See also¶
| Name | Description |
|---|---|
| TFPExprNode | Class for representing nodes in expression trees |