Examples of expr.Parser

Parses strings representing mathematical formulas with variables. The following operators, in descending order of precedence, are defined:

^ (raise to a power)
* /
Unary minus (-x)
+ -
< <= = <> >= >
and
or

^ associates right-to-left; other operators associate left-to-right.

These unary functions are defined: abs, acos, asin, atan, ceil, cos, exp, floor, log, round, sin, sqrt, tan. Each requires one argument enclosed in parentheses.

There are also binary functions: atan2, min, max; and a ternary conditional function: if(test, then, else).

Whitespace outside identifiers is ignored.

Examples:

42
2-3
cos(x^2) + sin(x^2)

  canvas.repaint();
    }


    private Curve parseFofX(String text, Color color) throws SyntaxException {
  Variable x = Variable.make("x");
  Parser parser = new Parser();
  parser.allow(x);
  return new FunctionOfX(canvas, color, x, parser.parseString(text));
    }

Examples of expr.Parser

Related Classes of expr.Parser