Translator – Parentheses (Release)

The problem with some parentheses expressions was that the last precedence was set at the open parentheses token, but this caused a problem when another open parentheses is processed before the next operand because the last precedence would be reset to the highest precedence before the last last precedence value could be used.  The solution was to set the last precedence value at a close parentheses token just before the stack is emptied up to the open parentheses.

Also discovered that the code needed to check if there was pending parentheses token at an open parentheses and a closing parentheses in addition to when added an operand or operator to the output list. These additional locations were discovered when more test expressions were added.  Since the code for checking and adding a dummy token was needed in four locations, this code was replaced with a function call to the new function do_pending_paren() where the code was located. This function does last precedence is higher than current operator check and the same precedence only when the state is Operand (for operands and open parentheses). Since this check is also done for the EOL operator, the function call was added there also and because the top of the stack contain a Null operator (lowest precedence), the dummy token is always added.

One other problem wes found. At the EOL, the token popped off the stack (which should be the Null token at the bottom of the stack, but could be something else if there is an error), was not deleted if the token wasn't the Null token.

The code now appears to be handling parentheses correctly and ibcp_0.1.5-src.zip has been uploaded at Sourceforge IBCP Project along with the binary for the program. Next array and function handling needs to be added to the Translator...