def test_container_not_list_should_give_error(self):
none_list_exprs = [Expression(Type.int(), 1, "a"), Expression(Type.decimal(), 1.0, "a"),
Expression(Type.boolean(), True, "a"), Expression(Type.string(), "abc", "a"),
Expression(Type.vector(), [1.0, 1.0, 1.0], "a")]
for none_list_expr in none_list_exprs:
with self.assertRaises(AssertionError) as context:
ListElem("a", none_list_expr, 0)
def test_to_expression_should_return_correct_value(self):
expression = Expression(Type.vector(), [1.0, 2.0, 3.0], "a")
expected = Expression(Type.decimal(), 1.0)
self.assertEqual(expected, VectorElem("a", expression, 0).to_expression())
expression = Expression(Type.vector(), [1.0, 2.0, 3.0], "b[1]")
expected = Expression(Type.decimal(), 3.0)
self.assertEqual(expected, VectorElem("b[1]", expression, 2).to_expression())
def test_store(self):
st = SymbolTable()
st.store("a", Expression(Type.int(), 1))
self.assertTrue("a" in st)
self.assertEqual(Type.int(), st.get_expression("a").type)
self.assertEqual(1, st.get_expression("a").value)
self.assertRaises(AssertionError, st.store, "a",
Expression(Type.int(), 1))
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 list(self, children) -> Expression:
exprs = children
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(exprs))
return Expression(Type.list_of(exprs[0].type),
[e.value for e in exprs])
def test_eq(self):
st1 = SymbolTable()
st2 = SymbolTable()
self.assertTrue(st1 == st2)
st1.store("a", Expression(Type.int(), 0))
self.assertFalse(st1 == st2)
st2.store("a", Expression(Type.int(), 0))
self.assertTrue(st1 == st2)
self.assertNotEqual(SymbolTable(), None)
def test_update(self):
st = SymbolTable()
self.assertRaises(AssertionError, st.update, "a", 1)
st.store("a", Expression(Type.int(), 1))
st.update("a", 2)
self.assertEqual(Type.int(), st.get_expression("a").type)
self.assertEqual(2, st.get_expression("a").value)
def declare(self, children) -> List[Command]:
type, identifier = children
ident = identifier.ident
if ident in self.symbol_table:
raise CompileError("Identifier {} already declared".format(ident))
self.symbol_table.store(
ident, Expression(type, type.default_value, ident=ident))
return []
def test_declare_int_should_change_symbol_table(self):
actual = SymbolTable()
generate_commands("""
main () { int a; }
""", actual)
expected = SymbolTable()
expected.store("a", Expression(Type.int(), 0, ident="a"))
self.assertEqual(expected, actual)
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.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 update(self, ident: str, value: Union[int, float, str, bool,
list]) -> None:
assert self.__contains__(
ident
), "Expression not in symbol table, please use store() to store it first"
old_expression = self._symbol_table[ident]
self._symbol_table[ident] = Expression(old_expression.type,
value,
ident=ident)
def test_declare_and_assign_decimal_should_change_symbol_table(self):
actual = SymbolTable()
generate_commands(
"""
main () { decimal a <- 1.0; }
""", actual)
expected = SymbolTable()
expected.store("a", Expression(Type.decimal(), 1.0, ident="a"))
self.assertEqual(expected, actual)
def vector(self, children) -> Expression:
expr1, expr2, expr3 = children
for expr in [expr1, expr2, expr3]:
if expr.type != Type.decimal():
raise CompileError(
"Expression {} should have type decimal, but is {}".format(
expr, expr.type))
return Expression(Type.vector(),
[expr1.value, expr2.value, expr3.value])
def test_declare_and_assign_vector_should_change_symbol_table(self):
actual = SymbolTable()
generate_commands(
"""
main () { vector a <- (1.0, 2.0, -3.0); }
""", actual)
expected = SymbolTable()
expected.store("a", Expression(Type.vector(), [1, 2, -3], ident="a"))
self.assertEqual(expected, actual)
def test_declare_and_assign_boolean_should_change_symbol_table(self):
actual = SymbolTable()
generate_commands(
"""
main () { boolean a <- true; }
""", actual)
expected = SymbolTable()
expected.store("a", Expression(Type.boolean(), True, ident="a"))
self.assertEqual(expected, actual)
def test_declare_and_assign_string_should_change_symbol_table(self):
actual = SymbolTable()
generate_commands(
"""
main () { string a <- "\0a"; }
""", actual)
expected = SymbolTable()
expected.store("a", Expression(Type.string(), "\0a", ident="a"))
self.assertEqual(expected, actual)
def test_eq(self):
vector_elems1 = [None,
VectorElem("a", Expression(Type.vector(), [1.0, 2.0, 3.0], "a"), 0),
VectorElem("b", Expression(Type.vector(), [1.0, 2.0, 3.0], "b"), 0),
VectorElem("a", Expression(Type.vector(), [2.0, 2.0, 3.0], "a"), 0),
VectorElem("a", Expression(Type.vector(), [1.0, 2.0, 3.0], "a"), 1),
VectorElem("b[1]", Expression(Type.vector(), [1.0, 2.0, 3.0], "a"), 0)]
vector_elems2 = [None,
VectorElem("a", Expression(Type.vector(), [1.0, 2.0, 3.0], "a"), 0),
VectorElem("b", Expression(Type.vector(), [1.0, 2.0, 3.0], "b"), 0),
VectorElem("a", Expression(Type.vector(), [2.0, 2.0, 3.0], "a"), 0),
VectorElem("a", Expression(Type.vector(), [1.0, 2.0, 3.0], "a"), 1),
VectorElem("b[1]", Expression(Type.vector(), [1.0, 2.0, 3.0], "a"), 0)]
for i in range(len(vector_elems1)):
for j in range(len(vector_elems2)):
if i == j:
self.assertEqual(vector_elems1[i], vector_elems2[j])
else:
self.assertNotEqual(vector_elems1[i], vector_elems2[j])
def test_declare_and_assign_list_should_change_symbol_table(self):
actual = SymbolTable()
generate_commands(
"""
main () { list[int] a <- [1, 2, -3]; }
""", actual)
expected = SymbolTable()
expected.store(
"a", Expression(Type.list_of(Type.int()), [1, 2, -3], ident="a"))
self.assertEqual(expected, actual)
def test_assign_ident_vector_should_update_symbol_table(self):
actual = SymbolTable()
generate_commands(
"""
main () {
vector a;
a <- (1.0, -1.0, +1.0);
}
""", actual)
expected = SymbolTable()
expected.store("a", Expression(Type.vector(), [1, -1, 1], ident="a"))
self.assertEqual(expected, actual)
def test_assign_ident_string_should_update_symbol_table(self):
actual = SymbolTable()
generate_commands(
"""
main () {
string a;
a <- "1";
}
""", actual)
expected = SymbolTable()
expected.store("a", Expression(Type.string(), "1", ident="a"))
self.assertEqual(expected, actual)
def declare_assign(self, children) -> List[Command]:
type, identifier, expr = children
ident = identifier.ident
if ident in self.symbol_table:
raise CompileError("Identifier {} already declared".format(ident))
if expr.type != type:
raise CompileError(
"Identifier {} has been declared as {}, but assigned as {}".
format(ident, type, expr.type))
expr_with_ident = Expression(expr.type, expr.value, ident)
self.symbol_table.store(ident, expr_with_ident)
return []
def test_assign_ident_decimal_should_update_symbol_table(self):
actual = SymbolTable()
generate_commands(
"""
main () {
decimal a;
a <- -1.5e10;
}
""", actual)
expected = SymbolTable()
expected.store("a", Expression(Type.decimal(), -1.5e10, ident="a"))
self.assertEqual(expected, actual)
def test_assign_ident_list_should_update_symbol_table(self):
actual = SymbolTable()
generate_commands(
"""
main () {
list[int] a;
a <- [1, -1, +1];
}
""", actual)
expected = SymbolTable()
expected.store(
"a", Expression(Type.list_of(Type.int()), [1, -1, 1], ident="a"))
self.assertEqual(expected, actual)
def test_declare_with_different_variable_name_should_change_symbol_table(
self):
for name in [
"a", "A", "_a", "_1", "_A", "abc", "Abc", "a12", "aA1", "_aA1"
]:
actual = SymbolTable()
generate_commands(
"""
main () {{ int {}; }}
""".format(name), actual)
expected = SymbolTable()
expected.store(name, Expression(Type.int(), 0, ident=name))
self.assertEqual(expected, actual)
def test_eq(self):
identifiers1 = [None, Identifier("a", None), Identifier("a", Expression(Type.int(), 1, "a")),
Identifier("a", Expression(Type.decimal(), 1.1, "a")),
Identifier("b", Expression(Type.int(), 1, "b")),
Identifier("b", Expression(Type.list_of(Type.int()), [], "b"))]
identifiers2 = [None, Identifier("a", None), Identifier("a", Expression(Type.int(), 1, "a")),
Identifier("a", Expression(Type.decimal(), 1.1, "a")),
Identifier("b", Expression(Type.int(), 1, "b")),
Identifier("b", Expression(Type.list_of(Type.int()), [], "b"))]
for i in range(len(identifiers1)):
for j in range(len(identifiers2)):
if i == j:
self.assertEqual(identifiers1[i], identifiers2[j])
else:
self.assertNotEqual(identifiers1[i], identifiers2[j])
def test_assign_list_elem_to_variable_should_update_symbol_table(self):
actual = SymbolTable()
generate_commands(
"""
main () {
list[int] a <- [0, 1, 2];
a[0] <- 1;
a[2] <- a[0];
}
""", actual)
expected = SymbolTable()
expected.store(
"a", Expression(Type.list_of(Type.int()), [1, 1, 1], ident="a"))
self.assertEqual(expected, actual)
def test_assign_vector_elem_to_variable_should_update_symbol_table(self):
for index, vector in zip(["x", "y", "z"],
[[-1.0, 0, 0], [0, -2.0, 0], [0, 0, -3.0]]):
actual = SymbolTable()
generate_commands(
"""
main () {{
vector a;
a.{} <- (-1.0, -2.0, -3.0).{};
}}
""".format(index, index), actual)
expected = SymbolTable()
expected.store("a", Expression(Type.vector(), vector, ident="a"))
self.assertEqual(expected, actual)
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_assign_list_elem_with_vector_should_update_symbol_table(self):
actual = SymbolTable()
generate_commands(
"""
main () {
list[vector] a <- [(1.0, 2.0, 3.0), (4.0, 5.0, 6.0)];
a[0] <- (7.0, 8.0, 9.0);
a[1].x <- 10.0;
a[1].y <- 11.0;
a[1].z <- 12.0;
}
""", actual)
expected = SymbolTable()
expected.store(
"a",
Expression(Type.list_of(Type.vector()), [[7, 8, 9], [10, 11, 12]],
ident="a"))
self.assertEqual(expected, actual)
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;
}
""", 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)