(bison.info)Examples
Next: Grammar File Prev: Concepts Up: Top
Examples
********
Now we show and explain three sample programs written using Bison: a
reverse polish notation calculator, an algebraic (infix) notation
calculator, and a multi-function calculator. All three have been tested
under BSD Unix 4.3; each produces a usable, though limited, interactive
desk-top calculator.
These examples are simple, but Bison grammars for real programming
languages are written the same way. You can copy these examples out of
the Info file and into a source file to try them.
RPN Calc- Reverse polish notation calculator;
a first example with no operator precedence.
Infix Calc- Infix (algebraic) notation calculator.
Operator precedence is introduced.
Simple Error Recovery- Continuing after syntax errors.
Multi-function Calc- Calculator with memory and trig functions.
It uses multiple data-types for semantic values.
Exercises- Ideas for improving the multi-function calculator.
automatically generated by info2www