def _parse_ctl_line(self, line, entry_addresses):
ctl = start = end = text = asm_directive = None
lengths = ()
first_char = line[0]
content = line[1:].lstrip()
if first_char in '.:':
ctl = first_char
text = line[2:].rstrip()
elif content:
if first_char in ' >bBcCDEgiLMNRsStTuwW':
fields = split_unquoted(content, ' ', 1)
params = split_unquoted(fields[0], ',')
try:
start = get_int_param(params[0])
except ValueError:
raise CtlParserError("invalid address")
ctl = first_char
if ctl == ' ':
index = bisect.bisect_right(entry_addresses, start) - 1
if index < 0:
raise CtlParserError(
"blank directive with no containing block")
entry_ctl = self._ctls[entry_addresses[index]]
if entry_ctl in 'cstw':
ctl = entry_ctl.upper()
else:
ctl = 'B'
try:
int_params = parse_params(ctl, params[1:])
except ValueError:
raise CtlParserError("invalid integer")
if int_params:
if ctl not in '>BCLMSTW':
raise CtlParserError("extra parameters after address")
length = int_params[0]
if length:
end = start + length
lengths = int_params[1:]
if ctl == 'L':
if end is None:
raise CtlParserError("loop length not specified")
if not lengths[0][0]:
raise CtlParserError("loop count not specified")
if len(fields) > 1:
text = fields[1]
elif first_char == '@':
asm_directive = self._parse_asm_directive(content)
elif first_char not in '#%;':
raise CtlParserError("invalid directive")
return ctl, start, end, text, lengths, asm_directive
def _parse_ctl_line(self, line, entry_addresses):
ctl = start = end = text = asm_directive = None
lengths = ()
first_char = line[0]
content = line[1:].lstrip()
if first_char in '.:':
ctl = first_char
text = line[2:].rstrip()
elif content:
if first_char in ' >bBcCDEgiLMNRsStTuwW':
fields = split_unquoted(content, ' ', 1)
params = split_unquoted(fields[0], ',')
try:
start = get_int_param(params[0])
except ValueError:
raise CtlParserError("invalid address")
ctl = first_char
if ctl == ' ':
index = bisect.bisect_right(entry_addresses, start) - 1
if index < 0:
raise CtlParserError("blank directive with no containing block")
entry_ctl = self._ctls[entry_addresses[index]]
if entry_ctl in 'cstw':
ctl = entry_ctl.upper()
else:
ctl = 'B'
try:
int_params = parse_params(ctl, params[1:])
except ValueError:
raise CtlParserError("invalid integer")
if int_params:
if ctl not in '>BCLMSTW':
raise CtlParserError("extra parameters after address")
length = int_params[0]
if length is not None:
end = start + length
lengths = int_params[1:]
if ctl == 'L':
if end is None:
raise CtlParserError("loop length not specified")
if not lengths:
raise CtlParserError("loop count not specified")
if len(fields) > 1:
text = fields[1]
elif first_char == '@':
asm_directive = self._parse_asm_directive(content)
elif first_char not in '#%;':
raise CtlParserError("invalid directive")
return ctl, start, end, text, lengths, asm_directive
def _parse_instruction(self, line):
ctl = line[0]
lengths = []
if line[1] == ';':
inst_ctl = None
start = None
i = line.find(' ', 2)
if i < 0:
i = len(line.rstrip())
comment_index = get_int_param(line[2:i])
else:
inst_ctl = line[1]
if inst_ctl == 'I':
i = find_unquoted(line.rstrip(), ' ', 2)
address_end = j = find_unquoted(line, ';', 2, i)
else:
address_end = line.index(',', 2)
i = find_unquoted(line.rstrip(), ' ', address_end + 1)
j = find_unquoted(line, ';', address_end + 1, i)
start = get_int_param(line[2:address_end])
if j == i:
comment_index = -1
else:
comment_index = get_int_param(line[j + 1:i])
if j > address_end + 1:
params = split_unquoted(line[address_end + 1:j], ',')
lengths = parse_params(inst_ctl, params, 0)
elif inst_ctl != 'I':
raise ValueError
comment = line[i:].strip()
return ctl, inst_ctl, start, lengths, comment_index, comment
def split_operands(text):
"""Split a comma-separated list of operands.
:param text: The operands.
:return: A list of individual operands.
"""
return [e.strip() for e in split_unquoted(text, ',')]
def _parse_instruction(self, line):
ctl = line[0]
lengths = []
if line[1] == ';':
inst_ctl = None
start = None
i = line.find(' ', 2)
if i < 0:
i = len(line.rstrip())
comment_index = get_int_param(line[2:i])
else:
inst_ctl = line[1]
if inst_ctl == 'I':
i = find_unquoted(line.rstrip(), ' ', 2)
address_end = j = find_unquoted(line, ';', 2, i)
else:
address_end = line.index(',', 2)
i = find_unquoted(line.rstrip(), ' ', address_end + 1)
j = find_unquoted(line, ';', address_end + 1, i)
start = get_int_param(line[2:address_end])
if j == i:
comment_index = -1
else:
comment_index = get_int_param(line[j + 1:i])
if j > address_end + 1:
params = split_unquoted(line[address_end + 1:j], ',')
lengths = parse_params(inst_ctl, params, 0)
elif inst_ctl != 'I':
raise ValueError
comment = line[i:].strip()
return ctl, inst_ctl, start, lengths, comment_index, comment
def split_operation(operation, tidy=False):
if tidy:
operation = convert_case(operation, False, True)
elements = operation.split(None, 1)
if len(elements) < 2:
return elements
elements[1:] = split_unquoted(elements[1], ',')
return [e.strip() for e in elements]
def split_operation(operation, tidy=False):
if tidy:
operation = convert_case(operation, False, True)
elements = operation.split(None, 1)
if len(elements) < 2:
return elements
elements[1:] = split_unquoted(elements[1], ',')
return [e.strip() for e in elements]
def _parse_sublengths(spec, subctl, default_prefix):
length = 0
lengths = []
if subctl == 'C':
sublengths = [spec]
else:
sublengths = split_unquoted(spec, ':')
for num in sublengths:
sublength, prefix = _parse_length(num, subctl, default_prefix)
lengths.append((sublength, prefix))
length += sublength
if len(lengths) == 1 and prefix is None:
return (length, ((length, None),))
if subctl == 'S':
length = lengths[0][0]
return (length, tuple(lengths))
def _parse_sublengths(spec, subctl, default_prefix):
length = 0
lengths = []
if subctl == 'C':
sublengths = [spec]
else:
sublengths = split_unquoted(spec, ':')
for num in sublengths:
sublength, prefix = _parse_length(num, subctl, default_prefix)
lengths.append((sublength, prefix))
length += sublength
if len(lengths) == 1 and prefix is None:
return (length, ((length, None), ))
if subctl == 'S':
length = lengths[0][0]
return (length, tuple(lengths))
def _parse_sublengths(spec, subctl, default_base):
length = 0
lengths = []
if subctl == 'C':
sublengths = [spec]
else:
sublengths = split_unquoted(spec, ':')
required = True
for num in sublengths:
sublength, base = _parse_length(num, default_base, required)
lengths.append((sublength, base))
if required or sublength:
length += sublength
required = subctl != 'S'
if subctl == 'S':
length = lengths[0][0]
return (length, tuple(lengths))