KJS - KJS::Debugger Class Reference

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KJS
Debugger

#include <debugger.h>

Inheritance diagram for KJS::Debugger:

Public Member Functions
	Debugger ()

virtual	~Debugger ()

virtual bool	atStatement (ExecState *exec, int sourceId, int firstLine, int lastLine)

virtual void	attach (Interpreter *interp)

virtual void	detach (Interpreter *interp)

virtual bool	enterContext (ExecState exec, int sourceId, int lineno, JSObject function, const List &args)

virtual bool	exception (ExecState exec, int sourceId, int lineno, JSValue exception)

virtual bool	exitContext (ExecState exec, int sourceId, int lineno, JSObject function)

bool	hasHandledException (ExecState , JSValue )

DebuggerImp *	imp () const

void	reportAtStatement (ExecState *exec, int sourceId, int firstLine, int lastLine)

void	reportException (ExecState exec, JSValue exception)

void	reportSourceParsed (ExecState exec, FunctionBodyNode body, int sourceId, UString sourceURL, const UString &source, int startingLineNumber, int errorLine, const UString &errorMsg)

virtual bool	shouldReindentSources () const

virtual bool	shouldReportCaught () const

virtual bool	sourceParsed (ExecState *exec, int sourceId, const UString &sourceURL, const UString &source, int startingLineNumber, int errorLine, const UString &errorMsg)

Static Public Attributes
static int	debuggersPresent = 0

Detailed Description

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 officially 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.

Definition at line 54 of file debugger.h.

Constructor & Destructor Documentation

Debugger::Debugger ( )

Creates a new debugger.

Definition at line 51 of file debugger.cpp.

Debugger::~Debugger ( )

virtual

Destroys the debugger.

If the debugger is attached to any interpreters, it is automatically detached.

Definition at line 58 of file debugger.cpp.

Member Function Documentation

bool Debugger::atStatement	(	ExecState *	exec,
		int	sourceId,
		int	firstLine,
		int	lastLine
	)

virtual

Called when a line of the script is reached (before it is executed)

The default implementation does nothing. Override this method if you want to process this event.

Parameters

exec	The current execution state
sourceId	The ID of the source code being executed
firstLine	The starting line of the statement that is about to be executed
lastLine	The ending line of the statement that is about to be executed (usually the same as firstLine)

Returns: true if execution should be continue, false if it should be aborted

Definition at line 122 of file debugger.cpp.

void Debugger::attach ( Interpreter * interp )

virtual

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.

Parameters

interp The interpreter to attach to

See also: detach()

Definition at line 64 of file debugger.cpp.

void Debugger::detach ( Interpreter * interp )

virtual

Detach the debugger from an interpreter.

Parameters

interp The interpreter to detach from. If 0, the debugger will be detached from all interpreters to which it is attached.

See also: attach()

Definition at line 77 of file debugger.cpp.

bool Debugger::enterContext	(	ExecState *	exec,
		int	sourceId,
		int	lineno,
		JSObject *	function,
		const List &	args
	)

virtual

Called when the interpreter enters a new execution context (stack frame).

This can happen in three situations:

A call to Interpreter::evaluate(). This has a codeType of GlobalCode
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.
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.

enterContext() is not called for functions implemented in the native code, since these do not use an execution context.

Parameters

exec	The current execution state (corresponding to the new stack)
sourceId	The ID of the source code being executed
lineno	The line that is about to be executed
function	The function being called. 0 in non-function context.
args	The arguments that were passed to the function line is being executed. Empty in non-function contexts.

Returns: true if execution should be continued, false if it should be aborted

Definition at line 141 of file debugger.cpp.

bool Debugger::exception	(	ExecState *	exec,
		int	sourceId,
		int	lineno,
		JSValue *	exception
	)

virtual

Called when an exception is thrown during script execution.

The default implementation does nothing. Override this method if you want to process this event.

Parameters

exec	The current execution state
sourceId	The ID of the source code being executed
lineno	The line at which the error occurred
exception	The exception object

Returns: true if execution should be continue, false if it should be aborted

Definition at line 116 of file debugger.cpp.

bool Debugger::exitContext	(	ExecState *	exec,
		int	sourceId,
		int	lineno,
		JSObject *	function
	)

virtual

Called when the interpreter exits an execution context.

This always corresponds to a previous call to enterContext()

The default implementation does nothing. Override this method if you want to process this event.

Parameters

exec	The current execution state
sourceId	The ID of the source code being executed
lineno	The line that is about to be executed
function	The function being returned from, if there is one

Returns: true if execution should be continue, false if it should be aborted

Definition at line 147 of file debugger.cpp.

bool Debugger::sourceParsed	(	ExecState *	exec,
		int	sourceId,
		const UString &	sourceURL,
		const UString &	source,
		int	startingLineNumber,
		int	errorLine,
		const UString &	errorMsg
	)

virtual

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.

Parameters

exec	The current execution state
sourceId	The ID of the source code (corresponds to the sourceId supplied in other functions such as atStatement()
sourceURL	Where the source code that was parsed came from
source	The source code that was parsed
startingLineNumber	The line number at which parsing started
errorLine	The line number at which parsing encountered an error, or -1 if the source code was valid and parsed successfully
errorMsg	The error description, or null if the source code was valid and parsed successfully

Returns: true if execution should be continue, false if it should be aborted

Definition at line 110 of file debugger.cpp.

The documentation for this class was generated from the following files:

KDE's Doxygen guidelines are available online.

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KJS::Debugger

Public Member Functions

Static Public Attributes

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation