Source/DebuggerController.m

   1 /*
   2  * MacGDBp
   3  * Copyright (c) 2007 - 2010, 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 "NSXMLElementAdditions.h"
  19 #import "AppDelegate.h"
  20 #import "BreakpointManager.h"
  21
  22 @interface DebuggerController (Private)
  23 - (void)updateSourceViewer;
  24 - (void)updateStackViewer;
  25 - (void)expandVariables;
  26 @end
  27
  28 @implementation DebuggerController
  29
  30 @synthesize connection, sourceViewer, inspector;
  31
  32 /**
  33  * Initializes the window controller and sets the connection using preference
  34  * values
  35  */
  36 - (id)init
  37 {
  38   if (self = [super initWithWindowNibName:@"Debugger"])
  39   {
  40     stackController = [[StackController alloc] init];
  41     pendingProperties_ = [[NSMutableDictionary alloc] init];
  42
  43     NSUserDefaults* defaults = [NSUserDefaults standardUserDefaults];
  44
  45     connection = [[DebuggerProcessor alloc] initWithPort:[defaults integerForKey:@"Port"]];
  46     connection.delegate = self;
  47     expandedVariables = [[NSMutableSet alloc] init];
  48     [[self window] makeKeyAndOrderFront:nil];
  49     [[self window] setDelegate:self];
  50
  51     if ([[NSUserDefaults standardUserDefaults] boolForKey:@"InspectorWindowVisible"])
  52       [inspector orderFront:self];
  53   }
  54   return self;
  55 }
  56
  57 /**
  58  * Dealloc
  59  */
  60 - (void)dealloc
  61 {
  62   [connection release];
  63   [expandedVariables release];
  64   [stackController release];
  65   [pendingProperties_ release];
  66   [super dealloc];
  67 }
  68
  69 /**
  70  * Before the display get's comfortable, set up the NSTextView to scroll horizontally
  71  */
  72 - (void)awakeFromNib
  73 {
  74   [[self window] setExcludedFromWindowsMenu:YES];
  75   [[self window] setTitle:[NSString stringWithFormat:@"GDBp @ %@:%d", [connection remoteHost], [connection port]]];
  76   [sourceViewer setDelegate:self];
  77   [stackArrayController setSortDescriptors:[NSArray arrayWithObject:[[[NSSortDescriptor alloc] initWithKey:@"index" ascending:YES] autorelease]]];
  78 }
  79
  80 /**
  81  * Validates the menu items for the "Debugger" menu
  82  */
  83 - (BOOL)validateUserInterfaceItem:(id <NSValidatedUserInterfaceItem>)anItem
  84 {
  85   SEL action = [anItem action];
  86
  87   if (action == @selector(stepOut:))
  88     return ([connection isConnected] && [stackController.stack count] > 1);
  89   else if (action == @selector(stepIn:) || action == @selector(stepOver:) || action == @selector(run:))
  90     return [connection isConnected];
  91   else if (action == @selector(reconnect:))
  92     return ![connection isConnected];
  93
  94   return [[self window] validateUserInterfaceItem:anItem];
  95 }
  96
  97 /**
  98  * Shows the inspector window
  99  */
 100 - (IBAction)showInspectorWindow:(id)sender
 101 {
 102   if (![inspector isVisible])
 103     [inspector makeKeyAndOrderFront:sender];
 104   else
 105     [inspector orderOut:sender];
 106 }
 107
 108 /**
 109  * Resets all the displays to be empty
 110  */
 111 - (void)resetDisplays
 112 {
 113   [variablesTreeController setContent:nil];
 114   [stackController.stack removeAllObjects];
 115   [stackArrayController rearrangeObjects];
 116   [[sourceViewer textView] setString:@""];
 117   sourceViewer.file = nil;
 118 }
 119
 120 /**
 121  * Sets the status to be "Error" and then displays the error message
 122  */
 123 - (void)setError:(NSString*)anError
 124 {
 125   [errormsg setStringValue:anError];
 126   [errormsg setHidden:NO];
 127 }
 128
 129 /**
 130  * Handles a GDBpConnection error
 131  */
 132 - (void)errorEncountered:(NSString*)error
 133 {
 134   [self setError:error];
 135 }
 136
 137 /**
 138  * Delegate function for GDBpConnection for when the debugger connects.
 139  */
 140 - (void)debuggerConnected
 141 {
 142   [errormsg setHidden:YES];
 143   [self startDebugger];
 144 }
 145
 146 /**
 147  * Called once the socket accepts and MacGDBp is connected to the debugger
 148  */
 149 - (void)startDebugger
 150 {
 151   if ([[NSUserDefaults standardUserDefaults] boolForKey:@"BreakOnFirstLine"])
 152     [self stepIn:self];
 153 }
 154
 155 /**
 156  * Called once the debugger disconnects.
 157  */
 158 - (void)debuggerDisconnected
 159 {
 160   if ([[NSUserDefaults standardUserDefaults] boolForKey:@"AutoReconnect"])
 161     [self reconnect:self];
 162
 163   // Invalidate the marked line so we don't look like we're still running.
 164   sourceViewer.markedLine = -1;
 165   [sourceViewer setNeedsDisplay:YES];
 166 }
 167
 168 /**
 169  * Forwards the message to run script execution to the connection
 170  */
 171 - (IBAction)run:(id)sender
 172 {
 173   [connection run];
 174 }
 175
 176 /**
 177  * Tells the connection to ask the server to reconnect
 178  */
 179 - (IBAction)reconnect:(id)sender
 180 {
 181   [connection reconnect];
 182   [self resetDisplays];
 183 }
 184
 185 /**
 186  * Forwards the message to "step in" to the connection
 187  */
 188 - (IBAction)stepIn:(id)sender
 189 {
 190   if ([[variablesTreeController selectedObjects] count] > 0)
 191     selectedVariable = [[variablesTreeController selectedObjects] objectAtIndex:0];
 192
 193   [connection stepIn];
 194 }
 195
 196 /**
 197  * Forwards the message to "step out" to the connection
 198  */
 199 - (IBAction)stepOut:(id)sender
 200 {
 201   if ([[variablesTreeController selectedObjects] count] > 0)
 202     selectedVariable = [[variablesTreeController selectedObjects] objectAtIndex:0];
 203
 204   [connection stepOut];
 205 }
 206
 207 /**
 208  * Forwards the message to "step over" to the connection
 209  */
 210 - (IBAction)stepOver:(id)sender
 211 {
 212   if ([[variablesTreeController selectedObjects] count] > 0)
 213     selectedVariable = [[variablesTreeController selectedObjects] objectAtIndex:0];
 214
 215   [connection stepOver];
 216 }
 217
 218 - (void)fetchProperty:(NSString*)property forNode:(VariableNode*)node
 219 {
 220   NSInteger txn = [connection getProperty:property];
 221   [pendingProperties_ setObject:node forKey:[NSNumber numberWithInt:txn]];
 222 }
 223
 224 /**
 225  * NSTableView delegate method that informs the controller that the stack selection did change and that
 226  * we should update the source viewer
 227  */
 228 - (void)tableViewSelectionDidChange:(NSNotification*)notif
 229 {
 230   [self updateSourceViewer];
 231   [self expandVariables];
 232 }
 233
 234 /**
 235  * Called whenver an item is expanded. This allows us to determine if we need to fetch deeper
 236  */
 237 - (void)outlineViewItemDidExpand:(NSNotification*)notif
 238 {
 239   NSTreeNode* node = [[notif userInfo] objectForKey:@"NSObject"];
 240   [expandedVariables addObject:[[node representedObject] fullName]];
 241 }
 242
 243 /**
 244  * Called when an item was collapsed. This allows us to remove it from the list of expanded items
 245  */
 246 - (void)outlineViewItemDidCollapse:(NSNotification*)notif
 247 {
 248   [expandedVariables removeObject:[[[[notif userInfo] objectForKey:@"NSObject"] representedObject] fullName]];
 249 }
 250
 251 #pragma mark Private
 252
 253 /**
 254  * Does the actual updating of the source viewer by reading in the file
 255  */
 256 - (void)updateSourceViewer
 257 {
 258   NSArray* selection = [stackArrayController selectedObjects];
 259   if (!selection || [selection count] < 1)
 260     return;
 261   if ([selection count] > 1)
 262     NSLog(@"INVALID SELECTION");
 263   StackFrame* frame = [selection objectAtIndex:0];
 264
 265   if (!frame.loaded) {
 266     [connection loadStackFrame:frame];
 267     return;
 268   }
 269
 270   // Get the filename.
 271   NSString* filename = [[NSURL URLWithString:frame.filename] path];
 272   if ([filename isEqualToString:@""])
 273     return;
 274
 275   // Replace the source if necessary.
 276   if (frame.source && ![sourceViewer.file isEqualToString:filename])
 277   {
 278     [sourceViewer setString:frame.source asFile:filename];
 279
 280     NSSet* breakpoints = [NSSet setWithArray:[[BreakpointManager sharedManager] breakpointsForFile:filename]];
 281     [[sourceViewer numberView] setMarkers:breakpoints];
 282   }
 283
 284   [sourceViewer setMarkedLine:frame.lineNumber];
 285   [sourceViewer scrollToLine:frame.lineNumber];
 286
 287   [[sourceViewer textView] display];
 288 }
 289
 290 /**
 291  * Does some house keeping to the stack viewer
 292  */
 293 - (void)updateStackViewer
 294 {
 295   [stackArrayController rearrangeObjects];
 296   [stackArrayController setSelectionIndex:0];
 297   [self expandVariables];
 298 }
 299
 300 /**
 301  * Expands the variables based on the stored set
 302  */
 303 - (void)expandVariables
 304 {
 305   NSString* selection = [selectedVariable fullName];
 306
 307   for (int i = 0; i < [variablesOutlineView numberOfRows]; i++)
 308   {
 309     NSTreeNode* node = [variablesOutlineView itemAtRow:i];
 310     NSString* fullName = [[node representedObject] fullName];
 311
 312     // see if it needs expanding
 313     if ([expandedVariables containsObject:fullName])
 314       [variablesOutlineView expandItem:node];
 315
 316     // select it if we had it selected before
 317     if ([fullName isEqualToString:selection])
 318       [variablesTreeController setSelectionIndexPath:[node indexPath]];
 319   }
 320 }
 321
 322 #pragma mark BSSourceView Delegate
 323
 324 /**
 325  * The gutter was clicked, which indicates that a breakpoint needs to be changed
 326  */
 327 - (void)gutterClickedAtLine:(int)line forFile:(NSString*)file
 328 {
 329   BreakpointManager* mngr = [BreakpointManager sharedManager];
 330
 331   if ([mngr hasBreakpointAt:line inFile:file])
 332   {
 333     [mngr removeBreakpointAt:line inFile:file];
 334   }
 335   else
 336   {
 337     Breakpoint* bp = [[Breakpoint alloc] initWithLine:line inFile:file];
 338     [mngr addBreakpoint:bp];
 339     [bp release];
 340   }
 341
 342   [[sourceViewer numberView] setMarkers:[NSSet setWithArray:[mngr breakpointsForFile:file]]];
 343   [[sourceViewer numberView] setNeedsDisplay:YES];
 344 }
 345
 346 #pragma mark GDBpConnectionDelegate
 347
 348 - (void)clobberStack
 349 {
 350   aboutToClobber_ = YES;
 351   [pendingProperties_ removeAllObjects];
 352 }
 353
 354 - (void)newStackFrame:(StackFrame*)frame
 355 {
 356   if (aboutToClobber_)
 357   {
 358     [stackController.stack removeAllObjects];
 359     aboutToClobber_ = NO;
 360   }
 361   [stackController push:frame];
 362   [self updateStackViewer];
 363   [self updateSourceViewer];
 364 }
 365
 366 - (void)sourceUpdated:(StackFrame*)frame
 367 {
 368   [self updateSourceViewer];
 369 }
 370
 371 - (void)receivedProperties:(NSArray*)properties forTransaction:(NSInteger)transaction
 372 {
 373   NSNumber* key = [NSNumber numberWithInt:transaction];
 374   VariableNode* node = [pendingProperties_ objectForKey:key];
 375   if (node) {
 376     [node setChildrenFromXMLChildren:properties];
 377     [variablesTreeController rearrangeObjects];
 378     [pendingProperties_ removeObjectForKey:key];
 379   }
 380 }
 381
 382 @end