0mmk / tokenevaluator Goto Github PK

HashMap<String, Double> variables = new HashMap<>();
variables.put("PI", Math.PI);
variables.put("E", Math.E);
variables.put("abc", 5.0);
TokenList threePlusPI = new TokenList("+", 3, "PI");
TokenList fiveMinusE = new TokenList("-", 5.0, "E");
TokenList multiplyFMTAndTPF = new TokenList("*", fiveMinusE, threePlusPI);
TokenList variableXYZ = new TokenList("=", "xyz", multiplyFMTAndTPF);
TokenList variableAdd = new TokenList("*=", "abc", variableXYZ);
System.out.println(parse(variableAdd, variables) + "\n" + variables);