This article can be obsolete: Actual documentation online

Nested functions

There aren't nested functions in C++. The automatic translation of nested Delphi functions replaces the inner functions by new member functions. The parameters and the declared variables of the outer function are passed to these new functions.

function TNested.Test(iOuterParam, 
                      iTwiceParam : Integer): Integer;
var
 iFunctionVar : Integer;

 procedure NestedTest(iInnerParam, iTwiceParam : Integer);
 begin
 result := iFunctionVar + 
           iClassVar + 
           iOuterParam + 
           iInnerParam + 
           iTwiceParam;
 end;

begin
 iClassVar := 1;
 iFunctionVar := 2;
 NestedTest(3, 4);
 result := result + iTwiceParam;
end;

->

void __fastcall TNested::NestedTest ( int iInnerParam, 
                                      int iTwiceParam, 
                                      int& iOuterParam, 
                                      int& result, 
                                      int& iFunctionVar )
{
  result = iFunctionVar + 
           iClassVar + 
           iOuterParam + 
           iInnerParam + 
           iTwiceParam;
}

int __fastcall TNested::Test ( int iOuterParam, 
                               int iTwiceParam )
{
  int result;
  int iFunctionVar;
  iClassVar = 1;
  iFunctionVar = 2;
  NestedTest( 3, 4, iOuterParam, result, iFunctionVar );
  result = result + iTwiceParam;
  return result;
}