def _get_class_constants(msg_class):
from genmsg.base import InvalidMsgSpec
from genmsg.msg_loader import _load_constant_line, _strip_comments
constants = {}
lines = msg_class._full_text.splitlines()
for line in lines:
clean_line = _strip_comments(line)
if not clean_line or not "=" in clean_line:
continue # ignore empty/field lines
try:
constant = _load_constant_line(line)
constants[constant.name] = _make_literal(
constant.val, get_type(constant.type))
except InvalidMsgSpec as e:
pass
return constants
def test__load_constant_line():
from genmsg.msgs import Constant, InvalidMsgSpec
from genmsg.msg_loader import _load_constant_line
try:
_load_constant_line("int8 field=alpha")
assert False, "should have raised"
except InvalidMsgSpec:
pass
try:
_load_constant_line("int8 field=")
assert False, "should have raised"
except InvalidMsgSpec:
pass
try:
_load_constant_line("faketype field=1")
assert False, "should have raised"
except InvalidMsgSpec:
pass
c = _load_constant_line("int8 field=1")
assert c == Constant('int8', 'field', 1, '1')
c = _load_constant_line("string val=hello #world")
assert c == Constant('string', 'val', 'hello #world', 'hello #world')
def test__load_constant_line():
from genmsg.msgs import Constant, InvalidMsgSpec
from genmsg.msg_loader import _load_constant_line
try:
_load_constant_line("int8 field=alpha")
assert False, "should have raised"
except InvalidMsgSpec:
pass
try:
_load_constant_line("int8 field=")
assert False, "should have raised"
except InvalidMsgSpec:
pass
try:
_load_constant_line("faketype field=1")
assert False, "should have raised"
except InvalidMsgSpec:
pass
c = _load_constant_line("int8 field=1")
assert c == Constant('int8', 'field', 1, '1')
c = _load_constant_line("string val=hello #world")
assert c == Constant('string', 'val', 'hello #world', 'hello #world')