def test_parse_function_expression(self):
self.assertEqual(self.parser.parse('function (x, y) { return x + y; }'),
ast.FunctionDefinition(parameters=[ast.Identifier(name='x'),
ast.Identifier(name='y')],
body=ast.Block(
statements=[ast.ReturnStatement(expression=ast.BinaryOp(op='+',
left_expression=ast.Identifier(name='x'),
right_expression=ast.Identifier(name='y')))])))
def p_function_expression(self, p):
"""function_expression : FUNCTION LPAREN formal_parameter_list_opt RPAREN block"""
p[0] = ast.FunctionDefinition(parameters=p[3], body=p[5])
def p_function_expression_scope(self, p):
"""function_expression_scope : LPAREN formal_parameter_list_opt RPAREN RARROW block"""
p[0] = ast.FunctionDefinition(parameters=p[2], body=p[5])