exprtree

Reads a c-like expression from standard input and prints a visual depiction of the syntax tree.

How to Build

Build Commands

./autogen.sh
./configure
make

Cleanup

make clean

or

make distclean

Build Dependencies

• gnu make
• autoconf

How to run

Argument

./exprtree -e '6+7*8/2+*a'

File

./exprtree -f example.txt

Output

                                       (+)
                                        |
                    ----------------------------------------
                    |                                      |
                   (+)                                    (*)
                    |                                      |
          --------------------                            (a)
          |                  |
         (6)                (/)
                             |
                        ----------
                        |        |
                       (*)      (2)
                        |
                     ------
                     |    |
                    (7)  (8)

Limitations

• No checking of left operand of assignment operator.
• No checking of left operand of accessor operator
• No checking of operand of increment/decrement operator
• No checking of operand of reference operator
• No type checking of array subscript
• No typecasting
• No sizeof macro