redef class ToolContext
# -d
var opt_debugger_mode: OptionBool = new OptionBool("Launches the target program with the debugger attached to it", "-d")
+ # -c
+ var opt_debugger_autorun: OptionBool = new OptionBool("Launches the target program with the interpreter, such as when the program fails, the debugging prompt is summoned", "-c")
redef init
do
super
self.option_context.add_option(self.opt_debugger_mode)
+ self.option_context.add_option(self.opt_debugger_autorun)
end
end
var time1 = get_time
self.toolcontext.info("*** END INTERPRETING: {time1-time0} ***", 2)
end
+
+ fun run_debugger_autorun(mainmodule: MModule, arguments: Array[String])
+ do
+ var time0 = get_time
+ self.toolcontext.info("*** START INTERPRETING ***", 1)
+
+ var interpreter = new Debugger(self, mainmodule, arguments)
+ interpreter.autocontinue = true
+
+ init_naive_interpreter(interpreter, mainmodule)
+
+ var time1 = get_time
+ self.toolcontext.info("*** END INTERPRETING: {time1-time0} ***", 2)
+ end
end
# The class extending NaiveInterpreter by adding debugging methods
# Set containing all the traced variables and their related frame
private var traces = new HashSet[TraceObject]
+ # Map containing all the positions for the positions of the arguments traced
+ # In a function call
+ private var fun_call_arguments_positions = new HashMap[Int, TraceObject]
+
+ # Triggers the remapping of a trace object in the local context after a function call
+ var aftermath = false
+
+ # Used to prevent the case when the body of the function called is empty
+ # If it is not, then, the remapping won't be happening
+ var frame_count_aftermath = 1
+
+ # Auto continues the execution until the end or until an error is encountered
+ var autocontinue = false
+
#######################################################################
## Execution of statement function ##
#######################################################################
var old = frame.current_node
frame.current_node = n
- if not n isa ABlockExpr then
- steps_fun_call(n)
+ if not self.autocontinue then
+ if not n isa ABlockExpr then
+ steps_fun_call(n)
- breakpoint_check(n)
+ breakpoint_check(n)
+
+ check_funcall_and_traced_args(n)
+
+ remap(n)
+
+ check_if_vars_are_traced(n)
+ end
end
n.stmt(self)
end
end
+ # Check if a variable of current expression is traced
+ # Then prints and/or breaks for command prompt
+ private fun check_if_vars_are_traced(n: AExpr)
+ do
+ var identifiers_in_instruction = get_identifiers_in_current_instruction(n.location.text)
+
+ for i in identifiers_in_instruction do
+ var variable = seek_variable(i, frame)
+ for j in self.traces do
+ if j.is_variable_traced_in_frame(i, frame) then
+ n.debug("Traced variable {i} used")
+ if j.break_on_encounter then while process_debug_command(gets) do end
+ break
+ end
+ end
+ end
+ end
+
+ # Function remapping all the traced objects to match their name in the local context
+ private fun remap(n: AExpr)
+ do
+ if self.aftermath then
+
+ # Trace every argument variable pre-specified
+ if self.frame_count_aftermath < frames.length and fun_call_arguments_positions.length > 0 then
+
+ var ids_in_fun_def = get_identifiers_in_current_instruction(get_function_arguments(frame.mpropdef.location.text))
+
+ for i in fun_call_arguments_positions.keys do
+ self.fun_call_arguments_positions[i].add_frame_variable(frame, ids_in_fun_def[i])
+ end
+ end
+
+ self.aftermath = false
+ end
+ end
+
+ # If the current instruction is a function call
+ # We analyse its signature and the position of traced arguments if the call
+ # For future remapping when inside the function
+ private fun check_funcall_and_traced_args(n: AExpr) do
+ # If we have a function call, we need to see if any of the arguments is traced (including the caller)
+ # if it is, next time we face an instruction, we'll trace the local version on the traced variable in the next frame
+ if n isa ACallExpr then
+ self.aftermath = true
+ self.frame_count_aftermath = frames.length
+ fun_call_arguments_positions.clear
+ var fun_arguments = get_identifiers_in_current_instruction(get_function_arguments(n.location.text))
+
+ for i in self.traces do
+ for j in [0 .. fun_arguments.length - 1] do
+ if i.is_variable_traced_in_frame(fun_arguments[j],frame) then
+ fun_call_arguments_positions[j] = i
+ end
+ end
+ end
+ end
+ end
+
#######################################################################
## Processing commands functions ##
#######################################################################
# Traces the modifications on a variable
else if parts_of_command.length >= 2 and parts_of_command[0] == "trace" then
process_trace_command(parts_of_command)
+ # Untraces the modifications on a variable
+ else if parts_of_command.length == 2 and parts_of_command[0] == "untrace" then
+ process_untrace_command(parts_of_command)
# Lists all the commands available
else
list_commands
end
print "\nEnd of current instruction \n"
+ else if parts_of_command[1] == "stack" then
+ print self.stack_trace
else if parts_of_command[1].has('[') and parts_of_command[1].has(']') then
process_array_command(parts_of_command)
else
end
end
+ # Processes the untrace variable command
+ #
+ # Command pattern : "untrace variable"
+ fun process_untrace_command(parts_of_command: Array[String])
+ do
+ var variable_name = get_real_variable_name(parts_of_command[1])
+ if untrace_variable(variable_name) then
+ print "Untraced variable {parts_of_command[1]}"
+ else
+ print "{parts_of_command[1]} is not traced"
+ end
+ end
+
# Processes the trace variable command
#
# Command pattern : "trace variable [break/print]"
## Trace Management functions ##
#######################################################################
+ # Effectively untraces the variable called *variable_name*
+ #
+ # Returns true if the variable exists, false otherwise
+ private fun untrace_variable(variable_name: String): Bool
+ do
+ var to_remove: nullable TraceObject = null
+ for i in self.traces do
+ if i.is_variable_traced_in_frame(variable_name, frame) then
+ to_remove = i
+ end
+ end
+
+ if to_remove != null then
+ self.traces.remove(to_remove)
+ return true
+ else
+ return false
+ end
+ end
+
+ # Effectively traces the variable *variable_name* either in print or break mode depending on the value of breaker (break if true, print if false)
+ #
private fun trace_variable(variable_name: String, breaker: Bool)
do
for i in self.traces do
# If it is a primitive type, its value is directly printed
fun print_instance(instance: Instance)
do
+ print "Printing innards of a variable"
+
if instance isa MutableInstance then
var attributes = instance.attributes
print "Object : {instance}"
else
print "Found variable {instance}"
end
+
+ print "Stopping printing innards of a variable"
end
# Prints the attributes demanded in a SequenceRead
print "[p/print] variable : [p/print] * shows the status of all the variables\n"
print "[p/print] variable[i] : Prints the value of the variable contained at position *i* in SequenceRead collection *variable*\n"
print "[p/print] variable[i..j]: Prints the value of all the variables contained between positions *i* and *j* in SequenceRead collection *variable*\n"
+ print "[p/print] stack: Prints a stack trace at current instruction\n"
print "Note : The arrays can be multi-dimensional (Ex : variable[i..j][k] will print all the values at position *k* of all the SequenceRead collections contained between positions *i* and *j* in SequenceRead collection *variable*)\n"
print "s : steps in on the current function\n"
print "n : steps-over the current instruction\n"
print "variable = value : Sets the value of *variable* to *value*\n"
print "[d/delete] line_nb : Removes a breakpoint on line *line_nb* of the current file \n"
print "[d/delete] file_name line_nb : Removes a breakpoint on line *line_nb* of file *file_name* \n"
+ print "trace variable_name [break/print] : Traces the uses of the variable you chose to trace by printing the statement it appears in or by breaking on each use."
+ print "untrace variable_name : Removes the trace on the variable you chose to trace earlier in the program"
print "kill : kills the current program (Exits with an error and stack trace)\n"
end
nitlanguage / nit.git / blobdiff