266 lines
7.4 KiB
Python
266 lines
7.4 KiB
Python
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#
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# Errors
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#
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from __future__ import absolute_import
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try:
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from __builtin__ import basestring as any_string_type
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except ImportError:
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any_string_type = (bytes, str)
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import sys
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from contextlib import contextmanager
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from ..Utils import open_new_file
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from . import DebugFlags
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from . import Options
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class PyrexError(Exception):
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pass
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class PyrexWarning(Exception):
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pass
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def context(position):
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source = position[0]
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assert not (isinstance(source, any_string_type)), (
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"Please replace filename strings with Scanning.FileSourceDescriptor instances %r" % source)
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try:
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F = source.get_lines()
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except UnicodeDecodeError:
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# file has an encoding problem
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s = u"[unprintable code]\n"
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else:
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s = u''.join(F[max(0, position[1]-6):position[1]])
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s = u'...\n%s%s^\n' % (s, u' '*(position[2]-1))
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s = u'%s\n%s%s\n' % (u'-'*60, s, u'-'*60)
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return s
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def format_position(position):
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if position:
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return u"%s:%d:%d: " % (position[0].get_error_description(),
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position[1], position[2])
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return u''
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def format_error(message, position):
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if position:
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pos_str = format_position(position)
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cont = context(position)
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message = u'\nError compiling Cython file:\n%s\n%s%s' % (cont, pos_str, message or u'')
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return message
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class CompileError(PyrexError):
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def __init__(self, position = None, message = u""):
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self.position = position
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self.message_only = message
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self.formatted_message = format_error(message, position)
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self.reported = False
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# Deprecated and withdrawn in 2.6:
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# self.message = message
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Exception.__init__(self, self.formatted_message)
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# Python Exception subclass pickling is broken,
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# see http://bugs.python.org/issue1692335
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self.args = (position, message)
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def __str__(self):
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return self.formatted_message
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class CompileWarning(PyrexWarning):
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def __init__(self, position = None, message = ""):
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self.position = position
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# Deprecated and withdrawn in 2.6:
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# self.message = message
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Exception.__init__(self, format_position(position) + message)
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class InternalError(Exception):
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# If this is ever raised, there is a bug in the compiler.
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def __init__(self, message):
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self.message_only = message
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Exception.__init__(self, u"Internal compiler error: %s"
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% message)
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class AbortError(Exception):
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# Throw this to stop the compilation immediately.
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def __init__(self, message):
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self.message_only = message
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Exception.__init__(self, u"Abort error: %s" % message)
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class CompilerCrash(CompileError):
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# raised when an unexpected exception occurs in a transform
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def __init__(self, pos, context, message, cause, stacktrace=None):
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if message:
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message = u'\n' + message
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else:
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message = u'\n'
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self.message_only = message
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if context:
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message = u"Compiler crash in %s%s" % (context, message)
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if stacktrace:
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import traceback
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message += (
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u'\n\nCompiler crash traceback from this point on:\n' +
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u''.join(traceback.format_tb(stacktrace)))
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if cause:
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if not stacktrace:
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message += u'\n'
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message += u'%s: %s' % (cause.__class__.__name__, cause)
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CompileError.__init__(self, pos, message)
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# Python Exception subclass pickling is broken,
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# see http://bugs.python.org/issue1692335
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self.args = (pos, context, message, cause, stacktrace)
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class NoElementTreeInstalledException(PyrexError):
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"""raised when the user enabled options.gdb_debug but no ElementTree
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implementation was found
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"""
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listing_file = None
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num_errors = 0
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echo_file = None
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def open_listing_file(path, echo_to_stderr = 1):
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# Begin a new error listing. If path is None, no file
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# is opened, the error counter is just reset.
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global listing_file, num_errors, echo_file
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if path is not None:
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listing_file = open_new_file(path)
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else:
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listing_file = None
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if echo_to_stderr:
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echo_file = sys.stderr
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else:
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echo_file = None
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num_errors = 0
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def close_listing_file():
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global listing_file
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if listing_file:
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listing_file.close()
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listing_file = None
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def report_error(err, use_stack=True):
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if error_stack and use_stack:
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error_stack[-1].append(err)
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else:
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global num_errors
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# See Main.py for why dual reporting occurs. Quick fix for now.
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if err.reported: return
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err.reported = True
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try: line = u"%s\n" % err
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except UnicodeEncodeError:
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# Python <= 2.5 does this for non-ASCII Unicode exceptions
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line = format_error(getattr(err, 'message_only', "[unprintable exception message]"),
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getattr(err, 'position', None)) + u'\n'
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if listing_file:
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try: listing_file.write(line)
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except UnicodeEncodeError:
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listing_file.write(line.encode('ASCII', 'replace'))
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if echo_file:
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try: echo_file.write(line)
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except UnicodeEncodeError:
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echo_file.write(line.encode('ASCII', 'replace'))
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num_errors += 1
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if Options.fast_fail:
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raise AbortError("fatal errors")
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def error(position, message):
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#print("Errors.error:", repr(position), repr(message)) ###
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if position is None:
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raise InternalError(message)
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err = CompileError(position, message)
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if DebugFlags.debug_exception_on_error: raise Exception(err) # debug
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report_error(err)
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return err
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LEVEL = 1 # warn about all errors level 1 or higher
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def message(position, message, level=1):
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if level < LEVEL:
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return
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warn = CompileWarning(position, message)
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line = "note: %s\n" % warn
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if listing_file:
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listing_file.write(line)
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if echo_file:
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echo_file.write(line)
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return warn
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def warning(position, message, level=0):
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if level < LEVEL:
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return
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if Options.warning_errors and position:
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return error(position, message)
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warn = CompileWarning(position, message)
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line = "warning: %s\n" % warn
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if listing_file:
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listing_file.write(line)
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if echo_file:
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echo_file.write(line)
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return warn
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_warn_once_seen = {}
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def warn_once(position, message, level=0):
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if level < LEVEL or message in _warn_once_seen:
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return
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warn = CompileWarning(position, message)
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line = "warning: %s\n" % warn
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if listing_file:
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listing_file.write(line)
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if echo_file:
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echo_file.write(line)
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_warn_once_seen[message] = True
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return warn
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# These functions can be used to momentarily suppress errors.
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error_stack = []
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def hold_errors():
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error_stack.append([])
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def release_errors(ignore=False):
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held_errors = error_stack.pop()
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if not ignore:
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for err in held_errors:
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report_error(err)
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def held_errors():
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return error_stack[-1]
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# same as context manager:
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@contextmanager
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def local_errors(ignore=False):
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errors = []
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error_stack.append(errors)
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try:
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yield errors
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finally:
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release_errors(ignore=ignore)
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# this module needs a redesign to support parallel cythonisation, but
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# for now, the following works at least in sequential compiler runs
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def reset():
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_warn_once_seen.clear()
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del error_stack[:]
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