Table of ContentsHandles and use counts Expr Interface Problems More problems We can do better... How are we going to use it? Example of usage Declaration of Expr Why no virtuals? The data structure The auxiliary data structure General C++ strategy for such structures Revised data structure What classes do we need? These classes know about each other The class hierarchy Private data in Expr Declaration of ExprBase We can start to define Expr What about the constructors? The ExprBase constructor The Expr destructor Expr copy and assignment Implementing copy and assignment Look familiar? The other two constructors are simple What about those other three classes? Class IntExpr definition IntExpr implementation Class UnaryExpr definition Implementation note UnaryExpr implementation BinaryExpr definition BinaryExpr implementation Compiling the program Typical dependencies An ordering that works An alternative ordering What about garbage collection? Discussion Discussion (continued) |
Author: Andrew Koenig
Email: ark@research.att.com Home Page: http://www.research.att.com/info/ark |