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'''An helper file for the pydev debugger (REPL) console
'''
from code import InteractiveConsole
import sys
import traceback
import _pydev_completer
from pydevd_tracing import GetExceptionTracebackStr
from pydevd_vars import makeValidXmlValue
from pydev_imports import Exec
from pydevd_io import IOBuf
from pydev_console_utils import BaseInterpreterInterface, BaseStdIn
from pydev_override import overrides
import pydevd_save_locals
CONSOLE_OUTPUT = "output"
CONSOLE_ERROR = "error"
#=======================================================================================================================
# ConsoleMessage
#=======================================================================================================================
class ConsoleMessage:
"""Console Messages
"""
def __init__(self):
self.more = False
# List of tuple [('error', 'error_message'), ('message_list', 'output_message')]
self.console_messages = []
def add_console_message(self, message_type, message):
"""add messages in the console_messages list
"""
for m in message.split("\n"):
if m.strip():
self.console_messages.append((message_type, m))
def update_more(self, more):
"""more is set to true if further input is required from the user
else more is set to false
"""
self.more = more
def toXML(self):
"""Create an XML for console message_list, error and more (true/false)
<xml>
<message_list>console message_list</message_list>
<error>console error</error>
<more>true/false</more>
</xml>
"""
makeValid = makeValidXmlValue
xml = '<xml><more>%s</more>' % (self.more)
for message_type, message in self.console_messages:
xml += '<%s message="%s"></%s>' % (message_type, makeValid(message), message_type)
xml += '</xml>'
return xml
#=======================================================================================================================
# DebugConsoleStdIn
#=======================================================================================================================
class DebugConsoleStdIn(BaseStdIn):
overrides(BaseStdIn.readline)
def readline(self, *args, **kwargs):
sys.stderr.write('Warning: Reading from stdin is still not supported in this console.\n')
return '\n'
#=======================================================================================================================
# DebugConsole
#=======================================================================================================================
class DebugConsole(InteractiveConsole, BaseInterpreterInterface):
"""Wrapper around code.InteractiveConsole, in order to send
errors and outputs to the debug console
"""
overrides(BaseInterpreterInterface.createStdIn)
def createStdIn(self):
return DebugConsoleStdIn() #For now, raw_input is not supported in this console.
overrides(InteractiveConsole.push)
def push(self, line, frame):
"""Change built-in stdout and stderr methods by the
new custom StdMessage.
execute the InteractiveConsole.push.
Change the stdout and stderr back be the original built-ins
Return boolean (True if more input is required else False),
output_messages and input_messages
"""
more = False
original_stdout = sys.stdout
original_stderr = sys.stderr
try:
try:
self.frame = frame
out = sys.stdout = IOBuf()
err = sys.stderr = IOBuf()
more = self.addExec(line)
except Exception:
exc = GetExceptionTracebackStr()
err.buflist.append("Internal Error: %s" % (exc,))
finally:
#Remove frame references.
self.frame = None
frame = None
sys.stdout = original_stdout
sys.stderr = original_stderr
return more, out.buflist, err.buflist
overrides(BaseInterpreterInterface.doAddExec)
def doAddExec(self, line):
return InteractiveConsole.push(self, line)
overrides(InteractiveConsole.runcode)
def runcode(self, code):
"""Execute a code object.
When an exception occurs, self.showtraceback() is called to
display a traceback. All exceptions are caught except
SystemExit, which is reraised.
A note about KeyboardInterrupt: this exception may occur
elsewhere in this code, and may not always be caught. The
caller should be prepared to deal with it.
"""
try:
Exec(code, self.frame.f_globals, self.frame.f_locals)
pydevd_save_locals.save_locals(self.frame)
except SystemExit:
raise
except:
self.showtraceback()
#=======================================================================================================================
# InteractiveConsoleCache
#=======================================================================================================================
class InteractiveConsoleCache:
thread_id = None
frame_id = None
interactive_console_instance = None
#Note: On Jython 2.1 we can't use classmethod or staticmethod, so, just make the functions below free-functions.
def get_interactive_console(thread_id, frame_id, frame, console_message):
"""returns the global interactive console.
interactive console should have been initialized by this time
"""
if InteractiveConsoleCache.thread_id == thread_id and InteractiveConsoleCache.frame_id == frame_id:
return InteractiveConsoleCache.interactive_console_instance
InteractiveConsoleCache.interactive_console_instance = DebugConsole()
InteractiveConsoleCache.thread_id = thread_id
InteractiveConsoleCache.frame_id = frame_id
console_stacktrace = traceback.extract_stack(frame, limit=1)
if console_stacktrace:
current_context = console_stacktrace[0] # top entry from stacktrace
context_message = 'File "%s", line %s, in %s' % (current_context[0], current_context[1], current_context[2])
console_message.add_console_message(CONSOLE_OUTPUT, "[Current context]: %s" % (context_message,))
return InteractiveConsoleCache.interactive_console_instance
def clear_interactive_console():
InteractiveConsoleCache.thread_id = None
InteractiveConsoleCache.frame_id = None
InteractiveConsoleCache.interactive_console_instance = None
def execute_console_command(frame, thread_id, frame_id, line):
"""fetch an interactive console instance from the cache and
push the received command to the console.
create and return an instance of console_message
"""
console_message = ConsoleMessage()
interpreter = get_interactive_console(thread_id, frame_id, frame, console_message)
more, output_messages, error_messages = interpreter.push(line, frame)
console_message.update_more(more)
for message in output_messages:
console_message.add_console_message(CONSOLE_OUTPUT, message)
for message in error_messages:
console_message.add_console_message(CONSOLE_ERROR, message)
return console_message
def get_completions(frame, act_tok):
""" fetch all completions, create xml for the same
return the completions xml
"""
return _pydev_completer.GenerateCompletionsAsXML(frame, act_tok)
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