def test_list_elem_expr_out_of_range_should_give_error(self):
with self.assertRaises(CompileError) as context:
generate_commands("""
main () {{
list[int] a <- [1, 2];
int b <- a[2];
}}
""".format(type))
self.assertTrue(
"List {} has length {}, but has been assessed with out-of-range index {}"
.format(Expression(Type.list_of(Type.int()), [1, 2], ident="a"), 2,
2) in str(context.exception))
with self.assertRaises(CompileError) as context:
generate_commands("""
main () {{
list[int] a <- [1, 2];
int b <- a[-1];
}}
""".format(type))
self.assertTrue(
"List {} has length {}, but has been assessed with out-of-range index {}"
.format(Expression(Type.list_of(Type.int()), [1, 2], ident="a"), 2,
-1) in str(context.exception))
def test_repeated_declare_and_assign_drone_constant_should_give_error(
self):
types = [
Type.int(),
Type.decimal(),
Type.string(),
Type.boolean(),
Type.vector(),
Type.drone(),
Type.list_of(Type.int()),
Type.list_of(Type.list_of(Type.int()))
]
for type in types:
with self.assertRaises(CompileError) as context:
generate_commands(
"""
main () {{
{} a;
{} DRONE <- a;
}}
""".format(type.type_name, type.type_name),
drone_config_map={"DRONE": DefaultDroneConfig()})
self.assertTrue(
"Identifier DRONE already declared" in str(context.exception))
def test_get_expression(self):
st = SymbolTable()
self.assertRaises(AssertionError, st.get_expression, "a")
st.store("a", Expression(Type.list_of(Type.int()), [1]))
self.assertEqual([1], st.get_expression("a").value)
self.assertEqual(1, st.get_expression("a").value[0])
self.assertEqual(Type.list_of(Type.int()), st.get_expression("a").type)
def test_assess_list_elem_nested_out_of_bound_should_give_error(self):
with self.assertRaises(CompileError) as context:
generate_commands("""
main () {
list[list[list[int]]] a <- [[[1], [2]]];
a[0][2] <- [1];
}
""")
self.assertTrue(
"List {} has length 2, but has been assessed with out-of-range index 2"
.format(
Expression(Type.list_of(Type.list_of(Type.int())), [[1], [2]],
ident="a[0]")) in str(context.exception))
with self.assertRaises(CompileError) as context:
generate_commands("""
main () {
list[list[list[int]]] a <- [[[1], [2]]];
a[0][1][1] <- 1;
}
""")
self.assertTrue(
"List {} has length 1, but has been assessed with out-of-range index 1"
.format(Expression(Type.list_of(Type.int()), [2],
ident="a[0][1]")) in str(context.exception))
def test_assign_list_elem_with_different_type_should_give_error(self):
types = [
Type.int(),
Type.decimal(),
Type.string(),
Type.boolean(),
Type.vector(),
Type.drone(),
Type.list_of(Type.int()),
Type.list_of(Type.list_of(Type.int()))
]
for t1 in types:
for t2 in types:
if t1 == t2:
continue
with self.assertRaises(CompileError) as context:
generate_commands("""
main () {{
{} a;
{} b;
list[{}] c <- [a];
c[0] <- b;
}}
""".format(t1, t2, t1))
self.assertTrue(
"Assigned value {} should have type {}, but is {}".format(
Expression(t2, t2.default_value, ident="b"),
t1.type_name, t2.type_name) in str(context.exception))
def test_to_expression_should_equal_self(self):
expressions = [
Expression(Type.int(), 1),
Expression(Type.decimal(), 1.1),
Expression(Type.boolean(), False),
Expression(Type.vector(), [1.1, 2.2, -1.1]),
Expression(Type.list_of(Type.int()), [1, 2, 3, 4]),
Expression(Type.list_of(Type.int()), []),
Expression(Type.list_of(Type.decimal()), [1.0, 2.0, 3.0, 4.0]),
Expression(Type.list_of(Type.list_of(Type.vector())),
[[[1.1, 2.2, -1.1], [1, 2, -1]]]),
Expression(Type.int(), 1, "a"),
Expression(Type.decimal(), 1.1, "a"),
Expression(Type.boolean(), False, "a"),
Expression(Type.vector(), [1.1, 2.2, -1.1], "a"),
Expression(Type.drone(), Drone("DRONE", DefaultDroneConfig()),
"a"),
Expression(Type.list_of(Type.int()), [1, 2, 3, 4], "a"),
Expression(Type.list_of(Type.int()), [], "a"),
Expression(Type.list_of(Type.decimal()), [1.0, 2.0, 3.0, 4.0],
"a"),
Expression(Type.list_of(Type.list_of(Type.vector())),
[[[1.1, 2.2, -1.1], [1, 2, -1]]], "a")
]
for expression in expressions:
self.assertEqual(expression, expression.to_expression())
def test_declare_and_assign_with_different_type_should_give_error(self):
types = [
Type.int(),
Type.decimal(),
Type.string(),
Type.boolean(),
Type.vector(),
Type.drone(),
Type.list_of(Type.int()),
Type.list_of(Type.list_of(Type.int()))
]
for t1 in types:
for t2 in types:
if t1 == t2:
continue
with self.assertRaises(CompileError) as context:
generate_commands("""
main () {{
{} a;
{} b <- a;
}}
""".format(t1, t2))
self.assertTrue(
"Identifier b has been declared as {}, but assigned as {}".
format(t2.type_name, t1.type_name) in str(
context.exception))
def test_list_elem_assign_with_wrong_index_should_give_error(self):
types = [
Type.decimal(),
Type.string(),
Type.boolean(),
Type.vector(),
Type.drone(),
Type.list_of(Type.int()),
Type.list_of(Type.decimal()),
Type.list_of(Type.list_of(Type.int()))
]
for type in types:
with self.assertRaises(CompileError) as context:
generate_commands("""
main () {{
{} a;
list[int] b;
b[a] <- 1;
}}
""".format(type))
self.assertTrue(
"Expression {} should have type int, but is {}".format(
Expression(type, type.default_value, ident="a"),
type.type_name) in str(context.exception))
def test_nested_list(self):
inner = Type.list_of(Type.int())
outer = Type.list_of(inner)
self.assertEqual(ListType(Type.list_of(Type.int())), outer)
self.assertEqual("list[list[int]]", outer.type_name)
self.assertEqual([], outer.default_value)
self.assertEqual(Type.list_of(Type.int()), outer.elem_type)
self.assertEqual("list[list[int]]", str(outer))
def test_list(self):
list_type = Type.list_of(Type.int())
self.assertEqual(Type.list_of(Type.int()), list_type)
self.assertEqual(ListType(Type.int()), list_type)
self.assertEqual("list[int]", list_type.type_name)
self.assertEqual([], list_type.default_value)
self.assertEqual(Type.int(), list_type.elem_type)
self.assertEqual("list[int]", str(list_type))
def test_declare_nested_list_should_change_symbol_table(self):
actual = SymbolTable()
generate_commands("""
main () { list[list[int]] a; }
""",
symbol_table=actual)
expected = SymbolTable()
expected.store(
"a",
Expression(Type.list_of(Type.list_of(Type.int())), [], ident="a"))
self.assertEqual(expected, actual)
def test_return_in_main_should_give_error(self):
types = [Type.int(), Type.decimal(), Type.string(), Type.boolean(), Type.vector(), Type.drone(),
Type.list_of(Type.int()), Type.list_of(Type.decimal()), Type.list_of(Type.list_of(Type.int()))]
for type in types:
with self.assertRaises(CompileError) as context:
generate_commands("""
main () {{
{} a;
return a;
}}
""".format(type))
self.assertTrue("Cannot return in the Main function" in str(context.exception))
def test_define_functions_should_change_function_table(self):
types = [Type.int(), Type.decimal(), Type.string(), Type.boolean(), Type.vector(), Type.drone(),
Type.list_of(Type.int()), Type.list_of(Type.decimal()), Type.list_of(Type.list_of(Type.int()))]
for type in types:
actual = FunctionTable()
generate_commands("""
function func() return {} {{}}
procedure proc() {{}}
main () {{}}
""".format(type), function_table=actual)
expected = FunctionTable()
expected.store("func", Function("func", [], type, []))
expected.store("proc", Function("proc", [], None, []))
self.assertEqual(expected, actual)
def test_return_not_exist_in_function_should_give_error(self):
types = [Type.int(), Type.decimal(), Type.string(), Type.boolean(), Type.vector(), Type.drone(),
Type.list_of(Type.int()), Type.list_of(Type.decimal()), Type.list_of(Type.list_of(Type.int()))]
for type in types:
with self.assertRaises(CompileError) as context:
generate_commands("""
function func() return {} {{
}}
main () {{
{} a <- func();
}}
""".format(type, type))
self.assertTrue("Function func has returned type {}, but nothing is returned"
.format(type)
in str(context.exception))
def test_container_not_vector_should_give_error(self):
none_vector_exprs = [
Expression(Type.int(), 1, "a"),
Expression(Type.decimal(), 1.0, "a"),
Expression(Type.boolean(), True, "a"),
Expression(Type.string(), "abc", "a"),
Expression(Type.drone(), Drone("DRONE", DefaultDroneConfig()),
"a"),
Expression(Type.list_of(Type.decimal()), [1.0, 1.0, 1.0], "a"),
Expression(Type.list_of(Type.list_of(Type.decimal())),
[[1.0, 1.0, 1.0]], "a")
]
for none_vector_expr in none_vector_exprs:
with self.assertRaises(AssertionError) as context:
VectorElem("a", none_vector_expr, 0)
def test_define_functions_with_parameter_should_change_function_table(self):
types = [Type.int(), Type.decimal(), Type.string(), Type.boolean(), Type.vector(), Type.drone(),
Type.list_of(Type.int()), Type.list_of(Type.decimal()), Type.list_of(Type.list_of(Type.int()))]
for type1 in types:
for type2 in types:
actual = FunctionTable()
generate_commands("""
function func({} a, {} b) return int {{}}
procedure proc({} a, {} b) {{}}
main () {{}}
""".format(type1, type2, type1, type2), function_table=actual)
expected = FunctionTable()
expected.store("func", Function("func", [Parameter("a", type1), Parameter("b", type2)], Type.int(), []))
expected.store("proc", Function("proc", [Parameter("a", type1), Parameter("b", type2)], None, []))
self.assertEqual(expected, actual)
def test_list_remove_from_nested_list_should_update_symbol_table(self):
actual = SymbolTable()
generate_commands("""
main () {
list[list[int]] a <- [[1], [2], [3]];
a[0].remove();
}
""",
symbol_table=actual)
expected = SymbolTable()
expected.store(
"a",
Expression(Type.list_of(Type.list_of(Type.int())), [[], [2], [3]],
ident="a"))
self.assertEqual(expected, actual)
def test_list_should_return_correct_value(self):
actual = SymbolTable()
generate_commands("""
main () {
list[int] a <- [];
list[boolean] b <- [true, false];
}
""",
symbol_table=actual)
expected = SymbolTable()
expected.store("a", Expression(Type.list_of(Type.int()), [],
ident="a"))
expected.store(
"b",
Expression(Type.list_of(Type.boolean()), [True, False], ident="b"))
self.assertEqual(expected, actual)
def test_for_with_wrong_type_ident_should_give_error(self):
types = [Type.decimal(), Type.string(), Type.boolean(), Type.vector(), Type.drone(),
Type.list_of(Type.int()), Type.list_of(Type.decimal()), Type.list_of(Type.list_of(Type.int()))]
for type in types:
with self.assertRaises(CompileError) as context:
generate_commands("""
main () {{
{} i;
for i from 0 to 9 step 2 {{
}}
}}
""".format(type))
self.assertTrue("Identifier i has been declared as {}, but assigned as int"
.format(type)
in str(context.exception))
def test_assign_ident_nested_list_should_update_symbol_table(self):
actual = SymbolTable()
generate_commands("""
main () {
list[list[int]] a;
a <- [[1], [-1], [+1]];
}
""",
symbol_table=actual)
expected = SymbolTable()
expected.store(
"a",
Expression(Type.list_of(Type.list_of(Type.int())),
[[1], [-1], [1]],
ident="a"))
self.assertEqual(expected, actual)
def test_return_correct_type_in_function_should_return_correct_value(self):
types = [Type.int(), Type.decimal(), Type.string(), Type.boolean(), Type.vector(), Type.drone(),
Type.list_of(Type.int()), Type.list_of(Type.decimal()), Type.list_of(Type.list_of(Type.int()))]
for type in types:
actual = SymbolTable()
generate_commands("""
function func() return {} {{
{} a;
return a;
}}
main () {{
{} a <- func();
}}
""".format(type, type, type), symbol_table=actual)
expected = SymbolTable()
expected.store("a", Expression(type, type.default_value, ident="a"))
self.assertEqual(expected, actual)
def test_for_with_wrong_type_step_expr_should_give_error(self):
types = [Type.decimal(), Type.string(), Type.boolean(), Type.vector(), Type.drone(),
Type.list_of(Type.int()), Type.list_of(Type.decimal()), Type.list_of(Type.list_of(Type.int()))]
for type in types:
with self.assertRaises(CompileError) as context:
generate_commands("""
main () {{
int i;
{} a;
for i from 0 to 9 step a {{
}}
}}
""".format(type))
self.assertTrue("Expression {} should have type int, but is {}"
.format(Expression(type, type.default_value, ident="a"), type.type_name)
in str(context.exception))
def test_return_value_in_procedure_should_give_error(self):
types = [Type.int(), Type.decimal(), Type.string(), Type.boolean(), Type.vector(), Type.drone(),
Type.list_of(Type.int()), Type.list_of(Type.decimal()), Type.list_of(Type.list_of(Type.int()))]
for type in types:
with self.assertRaises(CompileError) as context:
generate_commands("""
procedure proc() {{
{} a;
return a;
}}
main () {{
proc();
}}
""".format(type))
self.assertTrue("Procedure proc should not return anything, but {} is returned"
.format(Expression(type, type.default_value, ident=None))
in str(context.exception))
def test_define_functions_with_duplicated_parameter_should_give_error(self):
types = [Type.int(), Type.decimal(), Type.string(), Type.boolean(), Type.vector(), Type.drone(),
Type.list_of(Type.int()), Type.list_of(Type.decimal()), Type.list_of(Type.list_of(Type.int()))]
for type1 in types:
for type2 in types:
with self.assertRaises(CompileError) as context:
generate_commands("""
function func({} a, {} a) return int {{}}
main () {{}}
""".format(type1, type2, type1, type2))
self.assertTrue("Parameter names are duplicated in ['a', 'a']" in str(context.exception))
with self.assertRaises(CompileError) as context:
generate_commands("""
procedure proc({} a, {} a) {{}}
main () {{}}
""".format(type1, type2, type1, type2))
self.assertTrue("Parameter names are duplicated in ['a', 'a']" in str(context.exception))
def test_str(self):
st = SymbolTable()
st.store("a", Expression(Type.int(), 0))
st.store("b", Expression(Type.list_of(Type.boolean()), [True]))
expected = "SymbolTable: {\n" + \
" a -> Expression: { type: int, value: 0, ident: None }\n" + \
" b -> Expression: { type: list[boolean], value: [True], ident: None }\n" + \
"}"
self.assertEqual(expected, str(st))
def test_to_expression_should_return_correct_value(self):
expressions = [
None,
Expression(Type.int(), 1, "a"),
Expression(Type.decimal(), 1.1, "a"),
Expression(Type.boolean(), False, "a"),
Expression(Type.vector(), [1.1, 2.2, -1.1], "a"),
Expression(Type.drone(), Drone("DRONE", DefaultDroneConfig()),
"a"),
Expression(Type.list_of(Type.int()), [1, 2, 3, 4], "a"),
Expression(Type.list_of(Type.int()), [], "a"),
Expression(Type.list_of(Type.decimal()), [1.0, 2.0, 3.0, 4.0],
"a"),
Expression(Type.list_of(Type.list_of(Type.vector())),
[[[1.1, 2.2, -1.1], [1, 2, -1]]], "a")
]
for expression in expressions:
self.assertEqual(expression,
Identifier("a", expression).to_expression())
def test_to_expression_should_return_correct_value(self):
expression = Expression(Type.list_of(Type.decimal()),
[1.0, 2.0, 3.0, 4.0], "a")
expected = Expression(Type.decimal(), 1.0, "a[0]")
self.assertEqual(expected,
ListElem("a", expression, 0).to_expression())
expression = Expression(Type.list_of(Type.list_of(Type.vector())),
[[[1.1, 2.2, -1.1], [1, 2, -1]]], "a")
expected = Expression(Type.list_of(Type.vector()),
[[1.1, 2.2, -1.1], [1, 2, -1]], "a[0]")
self.assertEqual(expected,
ListElem("a", expression, 0).to_expression())
expression = Expression(Type.list_of(Type.boolean()), [True, False],
"b[1]")
expected = Expression(Type.boolean(), False, "b[1][1]")
self.assertEqual(expected,
ListElem("b[1]", expression, 1).to_expression())
def test_str(self):
self.assertEqual(
"ListElem: { ident: a, " +
"container: Expression: { type: list[int], value: [1, 2, 3, 4], ident: a }, "
+
"index: 0, expression: Expression: { type: int, value: 1, ident: a[0] } }",
str(
ListElem(
"a", Expression(Type.list_of(Type.int()), [1, 2, 3, 4],
"a"), 0)))
def test_assign_list_elem_to_variable_nested_should_update_symbol_table(
self):
actual = SymbolTable()
generate_commands("""
main () {
list[list[int]] a <- [[0, 1], [2, 3]];
a[0] <- [4, 5];
a[1][0] <- 6;
a[1][1] <- 7;
}
""",
symbol_table=actual)
expected = SymbolTable()
expected.store(
"a",
Expression(Type.list_of(Type.list_of(Type.int())),
[[4, 5], [6, 7]],
ident="a"))
self.assertEqual(expected, actual)
def visitList(self, ctx: xDroneParser.ListContext) -> Expression:
exprs = [self.visit(expr) for expr in ctx.expr()]
if len(exprs) == 0:
return Expression(Type.empty_list(), [])
if not all(e.type == exprs[0].type for e in exprs):
raise CompileError(
"Elements in list {} should have the same type".format(
[str(e) for e in exprs]))
return Expression(Type.list_of(exprs[0].type),
[e.value for e in exprs])
