Parses and evaluates boolean expressions. Usage:

BoolCompiler compiler = new BoolCompiler();
BoolProgram program = compiler.compile("a == b && a != c");

HashMap<String, Boolean> context = new HashMap<String, Boolean>();
context.put("a", true);
context.put("b", true);
context.put("c", false);
boolean result = program.eval(context);
System.out.println("result = "+result);

Features

  • Parses C-like boolean expressions
  • Expressions can contain variables
  • Variables can be assigned and changed
  • Evaluates expressions at a decent pace
  • Can print the AST for debugging purposes
  • Simple example of a recursive descent parser

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Registered

2020-09-27