Table Class – Summary

The major components for the Table class are:

    TableEntry    – structure for one entry in the Table
    TableErrType  – enumeration of the table errors (duplicate/missing)
    TableError    – structure for a Table error (type, code, index1, index2)
    TableSearch   – enumeration of search types (see Table Class – Searching)
    Table         – main class definition

The TableEntry structure was first shown in Table (Parser), but has had a few changes since then. The string field was replaced with name and name2, where name2 is for the second name of two word commands (NULL otherwise). The two flag was renamed multiple (see Parser – Implementation Notes). And there will be a flags field currently used for immediate commands only (see Parser – Immediate Commands – Implementation) along with a set of constants defined for each flag (where each constant will have one bit set so that multiple constants can be ORed together).

The begin and end codes were not fully explained in Table Class – Data Members. These will be codes (for example BegPlainWord_Code and EndPlainWord_Code) in entries of the table entry array bracketing their associated entries (for example Plain Words). These entries are not actually scanned during searches, but used during initialization to find the begin and end indexes of the entries types to set up the range array in the Table class.

The TableError structure contains constructors for initializing each of the error types. The information for each error type is contained in a structure for the error type and all the structures are within an anonymous union with the error type variable outside. The Table constructor allocates the error list:

    List<TableError> *error_list = new List<TableError>

The intention is that as errors are found in the table, they will be added to the error list by first creating the error using one of the TableError constructors, and then appending it to error_list. At the end of the Table constructor, if error_list is not empty, then the error_list pointer exception will be thrown. In the caller of the Table constructor, the catch will output the errors and terminate the program. However, the above line generates a compiler error...

Updated Wednesday, February 17, 2010; 8:10 pm: Removed details about the error types since there are now four.