Description

Use the RegExpr.Expression property to set or get the current regular expression.

Declaration

RegExprObj.Expression

Read-Write Property

String

RegExprObj

An expression, variable or parameter that specifies a reference to a RegExpr object

Applies To

The property is applied to the following object:

RegExpr

Property Value

A string that contains the current regular expression.

Regular expression consists of literal characters and regular expression operators. See a list of regular expression tokens in the Regular Expressions Syntax topic.

Remarks

If the Expression property changed, it is automatically converted into the engine’s internal representation when you call Exec, ExecNext, ExecPos, Substitute methods.

Use the RegExpr.Compile method for the enforced expression conversion.

Example

The following example demonstrates how to specify a regular expression pattern.

DelphiScript

procedure Sample;
var
  MyRegExpr : OleVariant;
begin
  MyRegExpr := HISUtils.RegExpr;
  // Initializes the InputString property
  MyRegExpr.InputString := 'Please e-mail us at [email protected] or [email protected]';
  // Initializes the Expression property
  MyRegExpr.Expression := '[\w-]+(\.[\w-]+)*@([\w-]+\.)+[a-zA-Z]{2,7}';
  MyRegExpr.ExecPos;
  // Posts the first matching text to the test log
  Log.Message(MyRegExpr.Match[0]);
end;

Expression Property