def _expression_to_evaluate(expression):
keepends = True
lines = expression.splitlines(keepends)
# find first non-empty line
chars_to_strip = 0
for line in lines:
if line.strip(): # i.e.: check first non-empty line
for c in iter_chars(line):
if c.isspace():
chars_to_strip += 1
else:
break
break
if chars_to_strip:
# I.e.: check that the chars we'll remove are really only whitespaces.
proceed = True
new_lines = []
for line in lines:
if not proceed:
break
for c in iter_chars(line[:chars_to_strip]):
if not c.isspace():
proceed = False
break
new_lines.append(line[chars_to_strip:])
if proceed:
if isinstance(expression, bytes):
expression = b''.join(new_lines)
else:
expression = u''.join(new_lines)
return expression
def _expression_to_evaluate(expression):
keepends = True
lines = expression.splitlines(keepends)
# find first non-empty line
chars_to_strip = 0
for line in lines:
if line.strip(): # i.e.: check first non-empty line
for c in iter_chars(line):
if c.isspace():
chars_to_strip += 1
else:
break
break
if chars_to_strip:
# I.e.: check that the chars we'll remove are really only whitespaces.
proceed = True
new_lines = []
for line in lines:
if not proceed:
break
for c in iter_chars(line[:chars_to_strip]):
if not c.isspace():
proceed = False
break
new_lines.append(line[chars_to_strip:])
if proceed:
if isinstance(expression, bytes):
expression = b''.join(new_lines)
else:
expression = u''.join(new_lines)
if IS_PY2 and isinstance(expression, unicode):
# In Python 2 we need to compile with bytes and not unicode (otherwise it'd use
# the default encoding which could be ascii).
# See https://github.com/microsoft/ptvsd/issues/1864 and https://bugs.python.org/issue18870
# for why we're using the utf-8 bom.
# i.e.: ... if an utf-8 bom is present, it is considered utf-8 in eval/exec.
expression = codecs.BOM_UTF8 + expression.encode('utf-8')
return expression
