fit.FitMatcher Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of fitnesse Show documentation

The fully integrated standalone wiki, and acceptance testing framework.

There is a newer version: 20241026

// Modified or written by Object Mentor, Inc. for inclusion with FitNesse.
// Copyright (c) 2002 Cunningham & Cunningham, Inc.
// Released under the terms of the GNU General Public License version 2 or later.
package fit;

import java.util.regex.Matcher;
import java.util.regex.Pattern;

import fit.exception.FitMatcherException;

class FitMatcher {
  private String expression;
  private Object parameter;

  public FitMatcher(String expression, Object parameter) {
    this.expression = expression;
    this.parameter = parameter;
  }

  public boolean matches() throws Exception {
    Pattern p = Pattern.compile("\\s*_?\\s*(<|>|<=|>=)\\s*([-+]?[\\d]*\\.?[\\d]+)");
    Matcher m = p.matcher(expression);
    if (m.matches()) {
      String op = m.group(1);
      String operandString = m.group(2);
      double operand = Double.parseDouble(operandString);
      double n = ((Number) parameter).doubleValue();
      if (op.equals("<")) return (n < operand);
      if (op.equals(">")) return (n > operand);
      if (op.equals("<=")) return (n <= operand);
      if (op.equals(">=")) return (n >= operand);
      return false;
    }

    p = Pattern.compile("\\s*([-+]?[\\d]*\\.?[\\d]+)\\s*(<|>|<=|>=)\\s*_\\s*(<|>|<=|>=)\\s*([-+]?[\\d]*\\.?[\\d]+)");
    m = p.matcher(expression);
    if (m.matches()) {
      double a = Double.parseDouble(m.group(1));
      String aop = m.group(2);
      String bop = m.group(3);
      double b = Double.parseDouble(m.group(4));
      double n = ((Number) parameter).doubleValue();

      boolean an = false;
      if (aop.equals("<")) an = a < n;
      if (aop.equals("<=")) an = a <= n;
      if (aop.equals(">")) an = a > n;
      if (aop.equals(">=")) an = a >= n;

      boolean nb = false;
      if (bop.equals("<")) nb = n < b;
      if (bop.equals("<=")) nb = n <= b;
      if (bop.equals(">")) nb = n > b;
      if (bop.equals(">=")) nb = n >= b;

      return an && nb;
    }
    throw new FitMatcherException("Invalid FitMatcher Expression");
  }

  public String message() {
    String message = null;
    String parmString = "" + parameter.toString() + "";
    if (!expression.contains("_"))
      message = parmString + expression;
    else
      message = expression.replaceFirst("_", parmString);
    return message;
  }
}