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Interpreter for non-negative arithmetic

This interpreter allows you to write code that performs addition, multiplication, order of operations, parenthesis, function definition and function calling with arguments for non-negative integers

Syntax

Every program must:

  • Must define MAIN()
  • DEF MAIN { A(1) } ; //valid main function
  • DEF A x { x+1 } ; //valid function with parameter
  • FUNCTION NAMES ARE UPPER CASE
  • parameters are lower case
  • 1.0,2.1,-3 are invalid numbers
  • minus, division are invalid operations
  • Functions being called must be defined
  • Interpreter can detect infinite left and right recursion and prints DIVERGENCE to stdout

How do I run it?

Dependencies

  • Javacc (Put in same file as Interpreter.jj)
  • Java

Steps

  1. Create interpreter: javacc-6.0/bin/javacc Interpreter.jj
  2. Compile java classes: javac *.java
  3. Run test files: java Interpreter < tests/validFiles.txt
  4. Your code just got interpreted and if its valid, the result will be displayed!