Source/DebuggerController.m

   1 /*
   2  * MacGDBp
   3  * Copyright (c) 2007 - 2008, 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 "DebuggerController.h"
  18 #import "GDBpConnection.h"
  19 #import "NSXMLElementAdditions.h"
  20 #import "AppDelegate.h"
  21 #import "BreakpointManager.h"
  22
  23 @interface DebuggerController (Private)
  24 - (void)updateSourceViewer;
  25 @end
  26
  27 @implementation DebuggerController
  28
  29 @synthesize connection, sourceViewer;
  30
  31 /**
  32  * Initializes the window controller and sets the connection using preference
  33  * values
  34  */
  35 - (id)init
  36 {
  37         if (self = [super initWithWindowNibName:@"Debugger"])
  38         {
  39                 stackController = [[StackController alloc] init];
  40
  41                 NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
  42                 connection = [[GDBpConnection alloc] initWithWindowController:self
  43                                                                                                                                          port:[defaults integerForKey:@"Port"]
  44                                                                                                                                   session:[defaults stringForKey:@"IDEKey"]];
  45                 expandedRegisters = [[NSMutableSet alloc] init];
  46                 [[self window] makeKeyAndOrderFront:nil];
  47                 [[self window] setDelegate:self];
  48         }
  49         return self;
  50 }
  51
  52 /**
  53  * Dealloc
  54  */
  55 - (void)dealloc
  56 {
  57         [connection release];
  58         [expandedRegisters release];
  59         [stackController release];
  60         [super dealloc];
  61 }
  62
  63 /**
  64  * Before the display get's comfortable, set up the NSTextView to scroll horizontally
  65  */
  66 - (void)awakeFromNib
  67 {
  68         [self setStatus:@"Connecting"];
  69         [[self window] setExcludedFromWindowsMenu:YES];
  70         [sourceViewer setDelegate:self];
  71 }
  72
  73 /**
  74  * Called right before the window closes so that we can tell the socket to close down
  75  */
  76 - (void)windowWillClose:(NSNotification *)notif
  77 {
  78         [[connection socket] close];
  79 }
  80
  81 /**
  82  * Validates the menu items for the "Debugger" menu
  83  */
  84 - (BOOL)validateUserInterfaceItem:(id <NSValidatedUserInterfaceItem>)anItem
  85 {
  86         SEL action = [anItem action];
  87
  88         if (action == @selector(stepOut:))
  89                 return ([connection isConnected] && [stack count] > 1);
  90         else if (action == @selector(stepIn:) || action == @selector(stepOver:) || action == @selector(run:))
  91                 return [connection isConnected];
  92
  93         return [[self window] validateUserInterfaceItem:anItem];
  94 }
  95
  96 /**
  97  * Resets all the displays to be empty
  98  */
  99 - (void)resetDisplays
 100 {
 101         [registerController setContent:nil];
 102         [stackController2 setContent:nil];
 103         [[sourceViewer textView] setString:@""];
 104 }
 105
 106 /**
 107  * Sets the status and clears any error message
 108  */
 109 - (void)setStatus:(NSString *)aStatus
 110 {
 111         [errormsg setHidden:YES];
 112         [statusmsg setStringValue:aStatus];
 113         [[self window] setTitle:[NSString stringWithFormat:@"GDBp @ %@:%d/%@", [connection remoteHost], [connection port], [connection session]]];
 114
 115         [stepInButton setEnabled:NO];
 116         [stepOutButton setEnabled:NO];
 117         [stepOverButton setEnabled:NO];
 118         [runButton setEnabled:NO];
 119         [reconnectButton setEnabled:NO];
 120
 121         if ([connection isConnected])
 122         {
 123                 if ([aStatus isEqualToString:@"Starting"])
 124                 {
 125                         [stepInButton setEnabled:YES];
 126                         [runButton setEnabled:YES];
 127                 }
 128         }
 129         else
 130         {
 131                 [reconnectButton setEnabled:YES];
 132         }
 133 }
 134
 135 /**
 136  * Sets the status to be "Error" and then displays the error message
 137  */
 138 - (void)setError:(NSString *)anError
 139 {
 140         [errormsg setStringValue:anError];
 141         [self setStatus:@"Error"];
 142         [errormsg setHidden:NO];
 143 }
 144
 145 /**
 146  * Sets the root node element of the stacktrace
 147  */
 148 - (void)setStack:(NSArray *)node
 149 {
 150         stack = node;
 151
 152         if ([stack count] > 1)
 153         {
 154                 [stepOutButton setEnabled:YES];
 155         }
 156         [stepInButton setEnabled:YES];
 157         [stepOverButton setEnabled:YES];
 158         [runButton setEnabled:YES];
 159
 160         [self updateSourceViewer];
 161 }
 162
 163 /**
 164  * Sets the stack root element so that the NSOutlineView can display it
 165  */
 166 - (void)setRegister:(NSXMLDocument *)elm
 167 {
 168         // XXX: Doing anything short of this will cause bindings to crash spectacularly for no reason whatsoever, and
 169         //              in seemingly arbitrary places. The class that crashes is _NSKeyValueObservationInfoCreateByRemoving.
 170         //              http://boredzo.org/blog/archives/2006-01-29/have-you-seen-this-crash says that this means nothing is
 171         //              being observed, but I doubt that he was using an NSOutlineView which seems to be one f!cking piece of
 172         //              sh!t when used with NSTreeController. http://www.cocoadev.com/index.pl?NSTreeControllerBugOrDeveloperError
 173         //              was the inspiration for this fix (below) but the author says that inserting does not work too well, but
 174         //              that's okay for us as we just need to replace the entire thing.
 175         [registerController setContent:nil];
 176         [registerController setContent:[[elm rootElement] children]];
 177
 178         for (int i = 0; i < [registerView numberOfRows]; i++)
 179         {
 180                 NSTreeNode *node = [registerView itemAtRow:i];
 181                 if ([expandedRegisters containsObject:[[node representedObject] fullname]])
 182                 {
 183                         [registerView expandItem:node];
 184                 }
 185         }
 186 }
 187
 188 /**
 189  * Forwards the message to run script execution to the connection
 190  */
 191 - (IBAction)run:(id)sender
 192 {
 193         [connection run];
 194 }
 195
 196 /**
 197  * Tells the connection to ask the server to reconnect
 198  */
 199 - (IBAction)reconnect:(id)sender
 200 {
 201         [connection reconnect];
 202 }
 203
 204 /**
 205  * Forwards the message to "step in" to the connection
 206  */
 207 - (IBAction)stepIn:(id)sender
 208 {
 209         StackFrame *frame = [connection stepIn];
 210         if ([frame isShiftedFrame:[stackController peek]])
 211                 [stackController pop];
 212         [stackController push:frame];
 213         NSLog(@"stack = %@", stackController.stack);
 214 }
 215
 216 /**
 217 * Forwards the message to "step out" to the connection
 218  */
 219 - (IBAction)stepOut:(id)sender
 220 {
 221         StackFrame *frame = [connection stepOut];
 222         [stackController pop]; // frame we were out of
 223         [stackController pop]; // frame we are returning to
 224         [stackController push:frame];
 225         NSLog(@"stack = %@", stackController.stack);
 226 }
 227
 228 /**
 229 * Forwards the message to "step over" to the connection
 230  */
 231 - (IBAction)stepOver:(id)sender
 232 {
 233         StackFrame *frame = [connection stepOver];
 234
 235         [stackController pop];
 236         [stackController push:frame];
 237
 238         NSLog(@"stack = %@", stackController.stack);
 239 }
 240
 241 /**
 242  * NSTableView delegate method that informs the controller that the stack selection did change and that
 243  * we should update the source viewer
 244  */
 245 - (void)tableViewSelectionDidChange:(NSNotification *)notif
 246 {
 247         [self updateSourceViewer];
 248 }
 249
 250 /**
 251  * Does the actual updating of the source viewer by reading in the file
 252  */
 253 - (void)updateSourceViewer
 254 {
 255         id selectedLevel = [[stackController2 selection] valueForKey:@"level"];
 256         if (selectedLevel == NSNoSelectionMarker)
 257         {
 258                 [[sourceViewer textView] setString:@""];
 259                 return;
 260         }
 261         int selection = [selectedLevel intValue];
 262
 263         if ([stack count] < 1)
 264         {
 265                 NSLog(@"huh... we don't have a stack");
 266                 return;
 267         }
 268
 269         // get the filename and then set the text
 270         NSString *filename = [[stack objectAtIndex:selection] valueForKey:@"filename"];
 271         filename = [[NSURL URLWithString:filename] path];
 272         if ([filename isEqualToString:@""])
 273         {
 274                 return;
 275         }
 276
 277         [sourceViewer setFile:filename];
 278
 279         int line = [[[stack objectAtIndex:selection] valueForKey:@"lineno"] intValue];
 280         [sourceViewer setMarkedLine:line];
 281         [sourceViewer scrollToLine:line];
 282
 283         // make sure the font stays Monaco
 284         //[sourceViewer setFont:[NSFont fontWithName:@"Monaco" size:10.0]];
 285 }
 286
 287 /**
 288  * Called whenver an item is expanded. This allows us to determine if we need to fetch deeper
 289  */
 290 - (void)outlineViewItemDidExpand:(NSNotification *)notif
 291 {
 292         NSTreeNode *node = [[notif userInfo] objectForKey:@"NSObject"];
 293         [expandedRegisters addObject:[[node representedObject] fullname]];
 294 }
 295
 296 /**
 297  * Called when an item was collapsed. This allows us to remove it from the list of expanded items
 298  */
 299 - (void)outlineViewItemDidCollapse:(NSNotification *)notif
 300 {
 301         [expandedRegisters removeObject:[[[[notif userInfo] objectForKey:@"NSObject"] representedObject] fullname]];
 302 }
 303
 304 #pragma mark BSSourceView Delegate
 305
 306 /**
 307  * The gutter was clicked, which indicates that a breakpoint needs to be changed
 308  */
 309 - (void)gutterClickedAtLine:(int)line forFile:(NSString *)file
 310 {
 311         BreakpointManager *mngr = [BreakpointManager sharedManager];
 312
 313         if ([mngr hasBreakpointAt:line inFile:file])
 314         {
 315                 [mngr removeBreakpointAt:line inFile:file];
 316         }
 317         else
 318         {
 319                 Breakpoint *bp = [[Breakpoint alloc] initWithLine:line inFile:file];
 320                 [mngr addBreakpoint:bp];
 321                 [bp release];
 322         }
 323
 324         [[sourceViewer numberView] setMarkers:[NSSet setWithArray:[mngr breakpointsForFile:file]]];
 325         [[sourceViewer numberView] setNeedsDisplay:YES];
 326 }
 327
 328 @end