Source/DebuggerProcessor.h

   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 <Cocoa/Cocoa.h>
  18
  19 #import "Breakpoint.h"
  20 #import "DebuggerConnection.h"
  21 #import "StackFrame.h"
  22
  23 @protocol DebuggerProcessorDelegate;
  24 @class VariableNode;
  25
  26 // The DebuggerProcessor is the communication layer between the application
  27 // and the back-end debugger. Clients issue debugger commands via this class,
  28 // which are sent in an asynchronous manner. Reads are also asynchronous and
  29 // the primary client of this class should set itself as the delegate. The
  30 // primary unit that this class deals with is the StackFrame; clients should
  31 // maintain a stack structure and the Connection will inform the delegate when
  32 // a new frame is created or the stack should be destroyed.
  33 @interface DebuggerProcessor : NSObject <DebuggerConnectionDelegate>
  34 {
  35   // The connection to the debugger engine.
  36   DebuggerConnection* connection_;
  37
  38   // Human-readable status of the connection.
  39   NSString* status;
  40   BOOL active_;
  41
  42   // The connection's delegate.
  43   id <DebuggerProcessorDelegate> delegate;
  44
  45   // A dictionary that maps routingIDs to StackFrame objects.
  46   NSMutableDictionary* stackFrames_;
  47   // The stack depth for the current build of |stackFrames_|.
  48   NSInteger stackDepth_;
  49   // The earliest transaction ID for the current build of |stackFrames_|.
  50   NSInteger stackFirstTransactionID_;
  51
  52   // Callback table. This maps transaction IDs to selectors. When the engine
  53   // returns a response to the debugger, we will dispatch the response XML to
  54   // the selector, based on transaction_id.
  55   NSMutableDictionary* callTable_;
  56
  57   // This stores additional context information for the callback selector.
  58   // This dictionary is keyed by the same transaction IDs in |callTable_|, but
  59   // also stores some other object that can be accessed in the callback.
  60   NSMutableDictionary* callbackContext_;
  61 }
  62
  63 @property (readonly, copy) NSString* status;
  64 @property (assign) id <DebuggerProcessorDelegate> delegate;
  65
  66 // initializer
  67 - (id)initWithPort:(NSUInteger)aPort;
  68
  69 // getter
  70 - (NSUInteger)port;
  71 - (NSString*)remoteHost;
  72 - (BOOL)isConnected;
  73
  74 // communication
  75 - (void)reconnect;
  76 - (void)run;
  77 - (void)stepIn;
  78 - (void)stepOut;
  79 - (void)stepOver;
  80 - (void)addBreakpoint:(Breakpoint*)bp;
  81 - (void)removeBreakpoint:(Breakpoint*)bp;
  82
  83 // Gets a property by name from the debugger engine. Returns a transaction ID
  84 // which used in the delegate callback. Properties must be retrieved at a
  85 // certain stack depth.
  86 - (NSInteger)getChildrenOfProperty:(VariableNode*)property atDepth:(NSInteger)depth;
  87
  88 // Takes a partially loaded stack frame and fetches the rest of the information.
  89 - (void)loadStackFrame:(StackFrame*)frame;
  90
  91 @end
  92
  93 // Delegate ////////////////////////////////////////////////////////////////////
  94
  95 @protocol DebuggerProcessorDelegate <NSObject>
  96
  97 // Passes up errors from SocketWrapper and any other errors generated by the
  98 // GDBpConnection.
  99 - (void)errorEncountered:(NSString*)error;
 100
 101 // Called when the socket connects. Passed up from SocketWrapper.
 102 - (void)debuggerConnected;
 103
 104 // Called when we disconnect.
 105 - (void)debuggerDisconnected;
 106
 107 // Tells the debugger to destroy the current stack display.
 108 - (void)clobberStack;
 109
 110 // Tells the debugger that a new stack frame is avaliable.
 111 - (void)newStackFrame:(StackFrame*)frame;
 112
 113 // Tells the debugger that new source is available for the given frame.
 114 // TODO: rename to |-frameUpdated:|.
 115 - (void)sourceUpdated:(StackFrame*)frame;
 116
 117 // Callback from |-getProperty:|.
 118 - (void)receivedProperties:(NSArray*)properties forTransaction:(NSInteger)transaction;
 119
 120 @end
 121