LET Command – Single/Multiple Assignments

The design of each command will be reconsidered with the new translator design.  Several designs for the LET command were considered, but in the end, the current design seems to the most efficient at run time with the minor exception of multiple sub-string assignments.  Excluding sub-string assignments, LET statements are translated as follows:

A = 5.0              A<ref> 5.0 Assign
A,B,C = 5.0          A<ref> B<ref> C<ref> 5.0 AssignList

For multiple assignments, all variables being assigned must be the same data type.  The data type of the value being assigned must match the variables being assigned, however, for numeric types, an appropriate hidden conversion code will be added as needed.  If the optional LET keyword was specified, the hidden LET sub-code is set in the final assignment token.

Click Continue... For details of the implementation of the LET translation.  See the commit log for other minor changes made.  Translator tests #1 through #3 (various assignment tests) now pass with the new translator routines.

[commit f965e0f649]