Translator – First/Last Operand – Initial Debugging

Initially, all the Translator tests were failing. The source of the crash was the new delete close parentheses routine, which also needed to check if the token type has a table entry. The crash occurred because when token didn't have a table entry as it was trying to access the table entry to check for a close parentheses code.

Next, a very old bug that went undiscovered was occurring in the expression only test mode used for the first four Translator tests. The problem was that the final result was left on the done stack and the Null token was left on the hold stack. The crash occurred  on the first error test when the cleanup routine was called and it tried checking for a close parentheses in the last operand – the token if was checking no longer existed. The End-of-line handler was modified to cleanup the stacks in expression mode and to check to make sure that there is only the result item on the done stack.

A series of problems were then discovered relating to unary operators and parenthetical expressions. Also, a realization was made that the first and last operands need to be saved for operands of arrays and used functions so that the Encoder can report errors correctly for array subscripts and function arguments. More on these problems to follow...