Source/StackController.m

   1 /*
   2  * MacGDBp
   3  * Copyright (c) 2007 - 2011, Blue Static <http://www.bluestatic.org>
   4  *
   5  * This program is free software; you can redistribute it and/or modify it under the terms of the GNU
   6  * General Public License as published by the Free Software Foundation; either version 2 of the
   7  * License, or (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without
  10  * even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  11  * General Public License for more details.
  12  *
  13  * You should have received a copy of the GNU General Public License along with this program; if not,
  14  * write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
  15  */
  16
  17 #import "StackController.h"
  18
  19
  20 @implementation StackController
  21
  22 @synthesize stack;
  23
  24 /**
  25  * Constructor
  26  */
  27 - (id)init
  28 {
  29   if (self = [super init])
  30   {
  31     stack = [[NSMutableArray alloc] init];
  32   }
  33   return self;
  34 }
  35
  36 /**
  37  * Destructor
  38  */
  39 - (void)dealloc
  40 {
  41   [stack release];
  42   [super dealloc];
  43 }
  44
  45 /**
  46  * Returns a reference to the top of the stack
  47  */
  48 - (StackFrame*)peek
  49 {
  50   return [stack lastObject];
  51 }
  52
  53 /**
  54  * Pops the current frame off the stack and returns the frame
  55  */
  56 - (StackFrame*)pop
  57 {
  58   StackFrame* frame = [stack lastObject];
  59
  60   if (frame != nil)
  61     [stack removeLastObject];
  62
  63   return frame;
  64 }
  65
  66 /**
  67  * Pushes a frame onto the end of the stack
  68  */
  69 - (void)push:(StackFrame*)frame
  70 {
  71   [stack insertObject:frame atIndex:[stack count]];
  72 }
  73
  74 @end