def _parse_value(self, value):
if value == 'y':
return c_ast.CNumber(1)
elif len(value) >= 2 and value[0] == '"' and value[-1] == '"':
return c_ast.CLiteral(value[1:-1])
else:
return c_ast.CNumber(int(value, base=0)) # Throws ValueError.
def test_parse_alignof_with_double_underscores_of_array(self):
source = '__alignof__(unsigned int[42])'
actual = self.parser.parse(source)
expected = c_ast.CFunctionCall(
function_name='__alignof__',
arguments=[c_ast.CLiteral('unsigned int[42]')],
)
self.assertASTEqual(actual, expected)
def test_parse_alignof_with_double_underscores(self):
source = '__alignof__(struct s*)'
actual = self.parser.parse(source)
expected = c_ast.CFunctionCall(
function_name='__alignof__',
arguments=[c_ast.CLiteral('struct s*')],
)
self.assertASTEqual(actual, expected)
def test_parse_sizeof(self):
source = 'sizeof(struct s*)'
actual = self.parser.parse(source)
expected = c_ast.CFunctionCall(
function_name='sizeof',
arguments=[c_ast.CLiteral('struct s*')],
)
self.assertASTEqual(actual, expected)
def test_visit_function_call(self):
function_call = c_ast.CFunctionCall(
function_name='f1',
arguments=[
c_ast.CNumber(24),
c_ast.CLiteral('literal'),
],
)
actual = self.expression_evaluator.evaluate(function_call)
self.assertEqual(actual, 33)
self.assertEqual(self.x, [24])
self.assertEqual(self.y, ['literal'])
def test_parse_sizeof_and_binary_plus_operators_and_additional_parentheses(
self):
source = """
( sizeof(struct ymmh_struct)
+ sizeof(struct lwp_struct)
+ sizeof(struct mpx_struct)
)
"""
actual = self.parser.parse(source)
expected = c_ast.CNestedExpression(
opener='(',
content=c_ast.CFunctionCall(
function_name='+',
arguments=[
c_ast.CFunctionCall(
function_name='+',
arguments=[
c_ast.CFunctionCall(
function_name='sizeof',
arguments=[
c_ast.CLiteral('struct ymmh_struct')
],
),
c_ast.CFunctionCall(
function_name='sizeof',
arguments=[
c_ast.CLiteral('struct lwp_struct')
],
),
],
),
c_ast.CFunctionCall(
function_name='sizeof',
arguments=[c_ast.CLiteral('struct mpx_struct')],
),
],
),
closer=')',
)
self.assertASTEqual(actual, expected)
def XXXX_create_cast_expression(self, tok):
if tok.typeof_arg:
type_expression = self.type_manager.get_type_of(
tok.typeof_arg.first)
else:
type_expression = tok.simple_type
# Check that casting makes sense.
target = self.type_manager.get_type_of(type_expression)
if not target:
raise pyparsing.ParseException("%s is not a type" % target)
return c_ast.CFunctionCall(
function_name='()',
arguments=[
c_ast.CLiteral(target),
tok.expression,
],
)
def _create_sizeof_type(self, sizeof, type_name):
return c_ast.CFunctionCall(
function_name=sizeof,
arguments=[c_ast.CLiteral(type_name)],
)
def test_visit_literal(self):
literal = c_ast.CLiteral('value')
actual = self.expression_evaluator.evaluate(literal)
self.assertEqual(actual, 'value')
def test_parse_with_string_flag(self):
config = 'FLAG="33"'
actual = self.parser.parse(config)
expected = {'FLAG': c_ast.CLiteral('33')}
self.assertEqual(actual, expected)