Remark Dictionary

The remark dictionary is the first dictionary implemented.  This is the simplest dictionary as it only needs to store the string of a comment, so the base dictionary is sufficient for this dictionary.  The ProgramUnit class was added to contain the remark dictionary, which is defined as a pointer and allocated in the ProgramUnit constructor.  A pointer was used since all the other program units will use the same remark dictionary.

Previously, the encoder encode routine just set the operand to zero and was modified to call the encode function for the code with an operand.  For now, if the code does not have an encode function, the operand is still set to zero.  The encode functions contain arguments for the pointer to the current program unit and the pointer to the token being encoded.  Additional arguments will probably be needed, but these are sufficient for now.

The rem encode function was implemented, which simply passes the token to the add function of the remark dictionary and returns the index of the entry to be set as the operand word.  The pointer to an encode function was added to the table entry structure and a table access function was added to return this pointer.  A pointer to the rem encode function was added to the REM command and REM operator code table entries.

For testing, a temporary program unit was added to the main tester run routine and a pointer to it is passed to the encode input routine, which passed to the encode routine.  Additional remarks were added to encoder test #1 including one set of duplicate comments to test that a single entry is stored in the dictionary.  Currently only the index value is output as the string (of the remark) is not yet retrieved, which will be the subject of the next change.  For now, the current output of this test (though incomplete) was copied for the expected results.  Though this makes the test pass, the purpose for changing this file was detect changes as more of the encode routines are implemented.

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