def parse_location(proc, args):
text = proc.current_command[len(args[0]) + 1:].strip()
if text in frozenset(("", ".")):
if text == ".":
location = resolve_location(proc, ".")
return location.path, location.line_number
else:
filename = proc.list_filename
if text == "":
# Continue from where we last left off
first = proc.list_lineno + 1
return filename, first
else:
try:
location = build_location(text)
except LocationError as e:
proc.errmsg("Error in parsing location at or around:")
proc.errmsg(e.text)
proc.errmsg(e.text_cursor)
return INVALID_PARSE_LOCATION
except ScannerError as e:
proc.errmsg("Lexical error in location at or around:")
proc.errmsg(e.text)
proc.errmsg(e.text_cursor)
return INVALID_PARSE_LOCATION
return location
def parse_break_cmd(proc, args):
if proc.current_command is None:
proc.errmsg("Internal error")
return INVALID_PARSE_BREAK
text = proc.current_command[len(args[0])+1:]
if len(args) > 1 and args[1] == 'if':
location = '.'
condition = text[text.find('if ')+3:]
elif text == '':
location = '.'
condition = None
else:
try:
bp_expr = build_bp_expr(text)
except LocationError as e:
proc.errmsg("Error in parsing breakpoint expression at or around:")
proc.errmsg(e.text)
proc.errmsg(e.text_cursor)
return INVALID_PARSE_BREAK
except ScannerError as e:
proc.errmsg("Lexical error in parsing breakpoint expression at or around:")
proc.errmsg(e.text)
proc.errmsg(e.text_cursor)
return INVALID_PARSE_BREAK
location = bp_expr.location
condition = bp_expr.condition
location = resolve_location(proc, location)
if location:
return location.method, location.path, location.line_number, condition
else:
return INVALID_PARSE_BREAK
def parse_break_cmd(proc, args):
if proc.current_command is None:
proc.errmsg("Internal error")
return INVALID_PARSE_BREAK
text = proc.current_command[len(args[0]) + 1:]
if len(args) > 1 and args[1] == 'if':
location = '.'
condition = text[text.find('if ') + 3:]
elif text == '':
location = '.'
condition = None
else:
try:
bp_expr = build_bp_expr(text)
except LocationError as e:
proc.errmsg("Error in parsing breakpoint expression at or around:")
proc.errmsg(e.text)
proc.errmsg(e.text_cursor)
return INVALID_PARSE_BREAK
except ScannerError as e:
proc.errmsg(
"Lexical error in parsing breakpoint expression at or around:")
proc.errmsg(e.text)
proc.errmsg(e.text_cursor)
return INVALID_PARSE_BREAK
location = bp_expr.location
condition = bp_expr.condition
location = resolve_location(proc, location)
if location:
return location.method, location.path, location.line_number, condition
else:
return INVALID_PARSE_BREAK
def parse_list_cmd(proc, args, listsize=10):
"""Parses arguments for the "list" command and returns the tuple:
(filename, first line number, last line number)
or sets these to None if there was some problem."""
text = proc.current_command[len(args[0]) + 1:].strip()
if text in frozenset(('', '.', '+', '-')):
if text == '.':
location = resolve_location(proc, '.')
return location.path, location.line_number, listsize
else:
if proc.list_lineno is None:
proc.errmsg("Don't have previous list location")
return INVALID_PARSE_LIST
filename = proc.list_filename
if text == '+':
first = max(1, proc.list_lineno + listsize)
elif text == '-':
if proc.list_lineno == 1 + listsize:
proc.errmsg("Already at start of %s." % proc.list_filename)
return INVALID_PARSE_LIST
first = max(1, proc.list_lineno - (2 * listsize) - 1)
elif text == '':
# Continue from where we last left off
first = proc.list_lineno + 1
last = first + listsize - 1
return filename, first, last
else:
try:
list_range = build_range(text)
except LocationError as e:
proc.errmsg("Error in parsing list range at or around:")
proc.errmsg(e.text)
proc.errmsg(e.text_cursor)
return INVALID_PARSE_LIST
except ScannerError as e:
proc.errmsg("Lexical error in parsing list range at or around:")
proc.errmsg(e.text)
proc.errmsg(e.text_cursor)
return INVALID_PARSE_LIST
if list_range.first is None:
# Last must have been given
assert isinstance(list_range.last, Location)
location = resolve_location(proc, list_range.last)
if not location:
return INVALID_PARSE_LIST
last = location.line_number
first = max(1, last - listsize)
return location.path, first, last
elif isinstance(list_range.first, int):
first = list_range.first
location = resolve_location(proc, list_range.last)
if not location:
return INVALID_PARSE_LIST
filename = location.path
last = location.line_number
if last < first:
# Treat as a count rather than an absolute location
last = first + last
return location.path, first, last
else:
# First is location. Last may be empty or a number
assert isinstance(list_range.first, Location)
location = resolve_location(proc, list_range.first)
if not location:
return INVALID_PARSE_LIST
first = location.line_number
last = list_range.last
if location.method:
first -= listsize // 2
if isinstance(last, str):
# Is an offset +number
assert last[0] == '+'
last = first + int(last[1:])
elif not last:
last = first + listsize
elif last < first:
# Treat as a count rather than an absolute location
last = first + last
return location.path, first, last
pass
return
def parse_list_cmd(proc, args, listsize=10):
"""Parses arguments for the "list" command and returns the tuple:
(filename, first line number, last line number)
or sets these to None if there was some problem."""
text = proc.current_command[len(args[0])+1:].strip()
if text in frozenset(('', '.', '+', '-')):
if text == '.':
location = resolve_location(proc, '.')
return location.path, location.line_number, listsize
else:
if proc.list_lineno is None:
proc.errmsg("Don't have previous list location")
return INVALID_PARSE_LIST
filename = proc.list_filename
if text == '+':
first = max(1, proc.list_lineno + listsize)
elif text == '-':
if proc.list_lineno == 1 + listsize:
proc.errmsg("Already at start of %s." % proc.list_filename)
return INVALID_PARSE_LIST
first = max(1, proc.list_lineno - (2*listsize) - 1)
elif text == '':
# Continue from where we last left off
first = proc.list_lineno + 1
last = first + listsize - 1
return filename, first, last
else:
try:
list_range = build_range(text)
except LocationError as e:
proc.errmsg("Error in parsing list range at or around:")
proc.errmsg(e.text)
proc.errmsg(e.text_cursor)
return INVALID_PARSE_LIST
except ScannerError as e:
proc.errmsg("Lexical error in parsing list range at or around:")
proc.errmsg(e.text)
proc.errmsg(e.text_cursor)
return INVALID_PARSE_LIST
if list_range.first is None:
# Last must have been given
assert isinstance(list_range.last, Location)
location = resolve_location(proc, list_range.last)
if not location:
return INVALID_PARSE_LIST
last = location.line_number
first = max(1, last - listsize)
return location.path, first, last
elif isinstance(list_range.first, int):
first = list_range.first
location = resolve_location(proc, list_range.last)
if not location:
return INVALID_PARSE_LIST
filename = location.path
last = location.line_number
if last < first:
# Treat as a count rather than an absolute location
last = first + last
return location.path, first, last
else:
# First is location. Last may be empty or a number
assert isinstance(list_range.first, Location)
location = resolve_location(proc, list_range.first)
if not location:
return INVALID_PARSE_LIST
first = location.line_number
last = list_range.last
if location.method:
first -= listsize // 2
if isinstance(last, str):
# Is an offset +number
assert last[0] == '+'
last = first + int(last[1:])
elif not last:
last = first + listsize
elif last < first:
# Treat as a count rather than an absolute location
last = first + last
return location.path, first, last
pass
return
