frame.current_node = old
end
+ # Does the same as an usual send, except it will modify the call chain on the first call when injecting code at Runtime using the debugger.
+ # Instead of creating a pristine Frame, it will copy the actual values of the frame, and re-inject them after execution in the current context.
+ fun rt_send(mproperty: MMethod, args: Array[Instance]): nullable Instance
+ do
+ var recv = args.first
+ var mtype = recv.mtype
+ var ret = send_commons(mproperty, args, mtype)
+ if ret != null then return ret
+ var propdef = mproperty.lookup_first_definition(self.mainmodule, mtype)
+ return self.rt_call(propdef, args)
+ end
+
+ # Same as a regular call but for a runtime injected module
+ #
+ fun rt_call(mpropdef: MMethodDef, args: Array[Instance]): nullable Instance
+ do
+ args = call_commons(mpropdef, args)
+ return rt_call_without_varargs(mpropdef, args)
+ end
+
+ # Common code to call and this function
+ #
+ # Call only executes the variadic part, this avoids
+ # double encapsulation of variadic parameters into an Array
+ fun rt_call_without_varargs(mpropdef: MMethodDef, args: Array[Instance]): nullable Instance
+ do
+ if self.modelbuilder.toolcontext.opt_discover_call_trace.value and not self.discover_call_trace.has(mpropdef) then
+ self.discover_call_trace.add mpropdef
+ self.debug("Discovered {mpropdef}")
+ end
+ if args.length < mpropdef.msignature.arity + 1 or args.length > mpropdef.msignature.arity + 1 then
+ fatal("NOT YET IMPLEMENTED: Invalid arity for {mpropdef}. {args.length} arguments given.")
+ end
+ if args.length < mpropdef.msignature.arity + 1 then
+ fatal("NOT YET IMPLEMENTED: default closures")
+ end
+
+ # Look for the AST node that implements the property
+ var mproperty = mpropdef.mproperty
+ if self.modelbuilder.mpropdef2npropdef.has_key(mpropdef) then
+ var npropdef = self.modelbuilder.mpropdef2npropdef[mpropdef]
+ self.parameter_check(npropdef, mpropdef, args)
+ if npropdef isa AConcreteMethPropdef then
+ return npropdef.rt_call(self, mpropdef, args)
+ else
+ print "Error, invalid propdef to call at runtime !"
+ return null
+ end
+ else if mproperty.name == "init" then
+ var nclassdef = self.modelbuilder.mclassdef2nclassdef[mpropdef.mclassdef]
+ self.parameter_check(nclassdef, mpropdef, args)
+ return nclassdef.call(self, mpropdef, args)
+ else
+ fatal("Fatal Error: method {mpropdef} not found in the AST")
+ abort
+ end
+ end
+
+ # Evaluates dynamically a snippet of Nit code
+ # `nit_code` : Nit code to be executed
+ fun eval(nit_code: String)
+ do
+ var local_toolctx = modelbuilder.toolcontext
+ local_toolctx.dbg = self
+ var e = local_toolctx.parse_something(nit_code)
+ if e isa AExpr then
+ nit_code = "print " + nit_code
+ e = local_toolctx.parse_something(nit_code)
+ end
+ if e isa AModule then
+ local_toolctx.had_error = false
+ modelbuilder.load_rt_module(self.mainmodule, e, "rt_module")
+ local_toolctx.run_phases([e])
+ if local_toolctx.had_error then
+ modelbuilder.model.try_remove_module(e.mmodule.as(not null))
+ local_toolctx.dbg = null
+ return
+ end
+ var mmod = e.mmodule
+ if mmod != null then
+ self.mainmodule = mmod
+ var local_classdefs = mmod.mclassdefs
+ var sys_type = mmod.sys_type
+ if sys_type == null then
+ print "Fatal error, cannot find Class Sys !\nAborting"
+ abort
+ end
+ var mobj = new MutableInstance(sys_type)
+ init_instance(mobj)
+ var initprop = mmod.try_get_primitive_method("init", sys_type.mclass)
+ if initprop != null then
+ self.send(initprop, [mobj])
+ end
+ var mainprop = mmod.try_get_primitive_method("main", sys_type.mclass)
+ if mainprop != null then
+ self.rt_send(mainprop, [mobj])
+ end
+ else
+ print "Error while loading_rt_module"
+ end
+ else
+ print "Error when parsing, e = {e.class_name}"
+ end
+ local_toolctx.dbg = null
+ end
+
# Encpasulates the behaviour for step over/out
private fun steps_fun_call(n: AExpr)
do
# continue reading commands from the console input
fun process_debug_command(command:String): Bool
do
- # For lisibility
- print "\n"
-
- # Kills the current program
- if command == "kill" then
- abort
# Step-out command
- else if command == "finish"
+ if command == "finish"
then
return step_out
# Step-in command
# Continues execution until the end
else if command == "c" then
return continue_exec
+ else if command == "nit" then
+ printn "$~> "
+ command = gets
+ var nit_buf = new Buffer
+ while not command == ":q" do
+ nit_buf.append(command)
+ nit_buf.append("\n")
+ printn "$~> "
+ command = gets
+ end
+ step_in
+ eval(nit_buf.to_s)
+ else if command == "quit" then
+ exit(0)
+ else if command == "abort" then
+ print stack_trace
+ exit(0)
else
var parts_of_command = command.split_with(' ')
# Shows the value of a variable in the current frame
# 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
+ print "Unknown command \"{command}\""
end
end
return true
var bp = get_breakpoint_from_command(parts_of_command)
if bp != null then
place_breakpoint(bp)
- else
- list_commands
end
end
remove_breakpoint(self.curr_file, parts_of_command[1].to_i)
else if parts_of_command.length >= 3 and parts_of_command[2].is_numeric then
remove_breakpoint(parts_of_command[1], parts_of_command[2].to_i)
- else
- list_commands
end
end
then
bp.set_max_breaks(1)
place_breakpoint(bp)
- else
- list_commands
end
end
end
end
- #######################################################################
- ## Command listing function ##
- #######################################################################
+end
- # Lists the commands available when using the debugger
- fun list_commands
- do
- print "\nCommand not recognized\n"
- print "Commands accepted : \n"
- print "[break/b] line : Adds a breakpoint on line *line_nb* of the current file\n"
- print "[break/b] file_name line_nb : Adds a breakpoint on line *line_nb* of file *file_name* \n"
- 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 "finish : steps out of the current function\n"
- print "variable as alias : Adds an alias called *alias* for the variable *variable*"
- print "An alias can reference another alias\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
+redef class AConcreteMethPropdef
+ # Same as call except it will copy local variables of the parent frame to the frame defined in this call.
+ # Not supposed to be used by anyone else than the Debugger.
+ private fun rt_call(v: Debugger, mpropdef: MMethodDef, args: Array[Instance]): nullable Instance
+ do
+ var f = new Frame(self, self.mpropdef.as(not null), args)
+ var curr_instances = v.frame.map
+ for i in curr_instances.keys do
+ f.map[i] = curr_instances[i]
+ end
+ call_commons(v,mpropdef,args,f)
+ var currFra = v.frames.shift
+ for i in curr_instances.keys do
+ if currFra.map.keys.has(i) then
+ curr_instances[i] = currFra.map[i]
+ end
+ end
+ if v.returnmark == f then
+ v.returnmark = null
+ var res = v.escapevalue
+ v.escapevalue = null
+ return res
+ end
+ return null
+
+ end
end
# Traces the modifications of an object linked to a certain frame
nitlanguage / nit.git / blobdiff