/* 
    P/P   *  Method: com.dmdirc.config.prefs.validator.ConditionRuleValidator__static_init
          */
     1  /*
     2   * Copyright (c) 2006-2009 Chris Smith, Shane Mc Cormack, Gregory Holmes
     3   * 
     4   * Permission is hereby granted, free of charge, to any person obtaining a copy
     5   * of this software and associated documentation files (the "Software"), to deal
     6   * in the Software without restriction, including without limitation the rights
     7   * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
     8   * copies of the Software, and to permit persons to whom the Software is
     9   * furnished to do so, subject to the following conditions:
    10   * 
    11   * The above copyright notice and this permission notice shall be included in
    12   * all copies or substantial portions of the Software.
    13   * 
    14   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
    15   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
    16   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
    17   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
    18   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
    19   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
    20   * SOFTWARE.
    21   */
    22  
    23  package com.dmdirc.config.prefs.validator;
    24  
    25  import com.dmdirc.actions.ConditionTree;
    26  
    27  /**
    28   * Validates a condition tree.
    29   */
         /* 
    P/P   *  Method: ValidationResponse validate(Object)
          * 
          *  Preconditions:
          *    (soft) init'ed(this.args)
          * 
          *  Postconditions:
          *    java.lang.StringBuilder:toString(...)._tainted == 0
          *    return_value == One-of{&new ValidationResponse(validate#1*), &new ValidationResponse(validate#2*), &new ValidationResponse(validate#4*)}
          *    return_value in Addr_Set{&new ValidationResponse(validate#1*),&new ValidationResponse(validate#2*),&new ValidationResponse(validate#4*)}
          *    new ValidationResponse(validate#1*) num objects <= 1
          *    new ValidationResponse(validate#1*).failure == &amp;"Invalid rule."
          *    new ValidationResponse(validate#2*) num objects <= 1
          *    new ValidationResponse(validate#2*).failure == &amp;java.lang.StringBuilder:toString(...)
          *    new ValidationResponse(validate#4*) num objects <= 1
          *    new ValidationResponse(validate#4*).failure == null
          */
    30  public class ConditionRuleValidator implements Validator<String> {
    31  
    32      /** The number of arguments to the tree. */
    33      private int args = 0;
    34  
    35      /**
    36       * Creates a new ConditionRuleValidator.
    37       *
    38       * @param args The number of arguments allowed in the ConditionTree (i.e.,
    39       * the number of ActionConditions)
    40       */
             /* 
    P/P       *  Method: void com.dmdirc.config.prefs.validator.ConditionRuleValidator(int)
              * 
              *  Postconditions:
              *    this.args == args
              *    init'ed(this.args)
              */
    41      public ConditionRuleValidator(final int args) {
    42          this.args = args;
    43      }
    44      
    45      /**
    46       * Updates the number of arguments used to validate the condition tree.
    47       * 
    48       * @param args New number of arguments
    49       */
    50      public void setArgs(final int args) {
                 /* 
    P/P           *  Method: void setArgs(int)
                  * 
                  *  Postconditions:
                  *    this.args == args
                  *    init'ed(this.args)
                  */
    51          this.args = args;
    52      }
    53  
    54      /** {@inheritDoc} */
    55      @Override
    56      public ValidationResponse validate(final String object) {
                 /* 
    P/P           *  Method: ValidationResponse validate(String)
                  * 
                  *  Preconditions:
                  *    (soft) init'ed(this.args)
                  * 
                  *  Postconditions:
                  *    java.lang.StringBuilder:toString(...)._tainted == 0
                  *    return_value in Addr_Set{&amp;new ValidationResponse(validate#4),&amp;new ValidationResponse(validate#2),&amp;new ValidationResponse(validate#1)}
                  *    new ValidationResponse(validate#1) num objects <= 1
                  *    new ValidationResponse(validate#1).failure == &amp;"Invalid rule."
                  *    new ValidationResponse(validate#2) num objects <= 1
                  *    new ValidationResponse(validate#2).failure == &amp;java.lang.StringBuilder:toString(...)
                  *    new ValidationResponse(validate#4) num objects <= 1
                  *    new ValidationResponse(validate#4).failure == null
                  * 
                  *  Test Vectors:
                  *    com.dmdirc.actions.ConditionTree:parseString(...)@57: Inverse{null}, Addr_Set{null}
                  */
    57          final ConditionTree tree = ConditionTree.parseString(object);
    58  
    59          if (tree == null) {
    60              return new ValidationResponse("Invalid rule.");
    61          } else if (tree.getMaximumArgument() >= args) {
    62              return new ValidationResponse("Condition "
    63                      + tree.getMaximumArgument() + " does not exist");
    64          } else {
    65              return new ValidationResponse();
    66          }
    67      }
    68  
    69  }