1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
|
// -*- c-basic-offset: 2 -*-
/*
* This file is part of the KDE libraries
* Copyright (C) 1999-2001 Harri Porten ([email protected])
* Copyright (C) 2001 Peter Kelly ([email protected])
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
#ifndef _KJSDEBUGGER_H_
#define _KJSDEBUGGER_H_
#include "interpreter.h"
namespace KJS {
class DebuggerImp;
class Interpreter;
class ExecState;
class Value;
class Object;
class UString;
class List;
class Completion;
/**
* @internal
*
* Provides an interface which receives notification about various
* script-execution related events such as statement execution and function
* calls.
*
* WARNING: This interface is still a work in progress and is not yet
* offically publicly available. It is likely to change in binary incompatible
* (and possibly source incompatible) ways in future versions. It is
* anticipated that at some stage the interface will be frozen and made
* available for general use.
*/
class KJS_EXPORT Debugger {
public:
/**
* Creates a new debugger
*/
Debugger();
/**
* Destroys the debugger. If the debugger is attached to any interpreters,
* it is automatically detached.
*/
virtual ~Debugger();
DebuggerImp *imp() const { return rep; }
/**
* Attaches the debugger to specified interpreter. This will cause this
* object to receive notification of events from the interpreter.
*
* If the interpreter is deleted, the debugger will automatically be
* detached.
*
* Note: only one debugger can be attached to an interpreter at a time.
* Attaching another debugger to the same interpreter will cause the
* original debugger to be detached from that interpreter.
*
* @param interp The interpreter to attach to
*
* @see detach()
*/
void attach(Interpreter *interp);
/**
* Detach the debugger from an interpreter
*
* @param interp The interpreter to detach from. If 0, the debugger will be
* detached from all interpreters to which it is attached.
*
* @see attach()
*/
void detach(Interpreter *interp);
/**
* Called to notify the debugger that some javascript source code has
* been parsed. For calls to Interpreter::evaluate(), this will be called
* with the supplied source code before any other code is parsed.
* Other situations in which this may be called include creation of a
* function using the Function() constructor, or the eval() function.
*
* The default implementation does nothing. Override this method if
* you want to process this event.
*
* @param exec The current execution state
* @param sourceId The ID of the source code (corresponds to the
* sourceId supplied in other functions such as atStatement()
* @param source The source code that was parsed
* @param errorLine The line number at which parsing encountered an
* error, or -1 if the source code was valid and parsed successfully
* @return true if execution should be continue, false if it should
* be aborted
*/
virtual bool sourceParsed(ExecState *exec, int sourceId,
const UString &source, int errorLine);
/**
* Called when all functions/programs associated with a particular
* sourceId have been deleted. After this function has been called for
* a particular sourceId, that sourceId will not be used again.
*
* The default implementation does nothing. Override this method if
* you want to process this event.
*
* @param exec The current execution state
* @param sourceId The ID of the source code (corresponds to the
* sourceId supplied in other functions such as atLine()
* @return true if execution should be continue, false if it should
* be aborted
*/
virtual bool sourceUnused(ExecState *exec, int sourceId);
/**
* Called when an exception is thrown during script execution.
*
* The default implementation does nothing. Override this method if
* you want to process this event.
*
* @param exec The current execution state
* @param value The value of the exception
* @param inTryCatch Whether or not the exception will be caught by the
* script
* @return true if execution should be continue, false if it should
* be aborted
*/
virtual bool exception(ExecState *exec, const Value &value,
bool inTryCatch);
/**
* Called when a line of the script is reached (before it is executed)
*
* The exec pointer's Context object can be inspected to determine
* the line number and sourceId of the statement.
*
* The default implementation does nothing. Override this method if
* you want to process this event.
*
* @param exec The current execution state
* @return true if execution should be continue, false if it should
* be aborted
*/
virtual bool atStatement(ExecState *exec);
/**
* Called when the interpreter enters a new execution context (stack
* frame). This can happen in three situations:
*
* <ul>
* <li>A call to Interpreter::evaluate(). This has a codeType of
* GlobalCode, and the sourceId is the id of the code passed to
* evaluate(). The lineno here is always 0 since execution starts at the
* beginning of the script.</li>
* <li>A call to the builtin eval() function. The sourceId corresponds to
* the code passed in to eval. This has a codeType of EvalCode. The
* lineno here is always 0 since execution starts at the beginning of
* the script.</li>
* <li>A function call. This only occurs for functions defined in
* ECMAScript code, whether via the normal function() { ... } syntax or
* a call to the built-in Function() constructor (anonymous functions).
* In the former case, the sourceId and lineno indicate the location at
* which the function was defined. For anonymous functions, the sourceId
* corresponds to the code passed into the Function() constructor.</li>
* </ul>
*
* enterContext() is not called for functions implemented in the native
* code, since these do not use an execution context.
*
* @param exec The current execution state (corresponding to the new stack
* frame)
*/
virtual bool enterContext(ExecState *exec);
/**
* Called when the inteprreter exits an execution context. This always
* corresponds to a previous call to enterContext()
*
* @param exec The current execution state (corresponding to the stack frame
* being exited from)
* @param completion The result of execution of the context. Can be used to
* inspect exceptions and return values
*/
virtual bool exitContext(ExecState *exec, const Completion &completion);
private:
DebuggerImp *rep;
};
}
#endif
|
