def test_parse_var_dec():
parser = MuddParser('tests/bpl_files/test_parse_variable_declaration.bpl')
tree = parser.parse()
assert tree.kind == N_PROGRAM
assert tree.children[0].kind == N_DECLARATION_LIST
assert tree.children[0].children[0].kind == N_DECLARATION_LIST
assert tree.children[0].children[1].kind == N_DECLARATION
declaration1 = tree.children[0].children[1]
assert declaration1.children[0].kind == N_VAR_DEC
assert declaration1.children[0].children[0].kind == N_TYPE_SPECIFIER
assert declaration1.children[0].children[1].kind == T_ID
assert declaration1.children[0].children[2].kind == T_SEMICOL
declaration2 = tree.children[0].children[0].children[1]
assert declaration2.children[0].kind == N_VAR_DEC
assert declaration2.children[0].children[0].kind == N_TYPE_SPECIFIER
assert declaration2.children[0].children[1].kind == T_MUL
assert declaration2.children[0].children[2].kind == T_ID
assert declaration2.children[0].children[3].kind == T_SEMICOL
declaration3 = tree.children[0].children[0].children[0].children[0]
assert declaration3.children[0].kind == N_VAR_DEC
assert declaration3.children[0].children[0].kind == N_TYPE_SPECIFIER
assert declaration3.children[0].children[1].kind == T_ID
assert declaration3.children[0].children[2].kind == T_LBRACK
assert declaration3.children[0].children[3].kind == T_NUM
assert declaration3.children[0].children[4].kind == T_RBRACK
assert declaration3.children[0].children[5].kind == T_SEMICOL
print(declaration1)
print(declaration2)
print(declaration3)
def test_parse_expression():
parser = MuddParser(
'tests/bpl_files/test_parse_expression.bpl'
)
tree = parser.parse()
fun_dec = tree.children[0].children[0].children[0]
statement_list = fun_dec.children[5].children[2]
statement1 = statement_list.children[1]
expression1 = statement1.children[0].children[0]
assert expression1.children[0].kind == N_VAR
assert expression1.children[0].children[0].kind == T_MUL
assert expression1.children[0].children[1].kind == T_ID
assert expression1.children[1].kind == T_ASSIGN
assert expression1.children[2].kind == N_EXPRESSION
statement2 = statement_list.children[0].children[1]
expression2 = statement2.children[0].children[0]
assert expression2.children[0].kind == N_VAR
assert expression2.children[0].children[0].kind == T_ID
assert expression2.children[0].children[2].kind == N_EXPRESSION
assert expression2.children[1].kind == T_ASSIGN
assert expression2.children[2].kind == N_EXPRESSION
statement3 = statement_list.children[0].children[0].children[1]
expression3 = statement3.children[0].children[0]
assert expression3.children[0].kind == N_VAR
assert expression3.children[0].children[0].kind == T_ID
assert expression3.children[1].kind == T_ASSIGN
assert expression3.children[2].kind == N_EXPRESSION
print(expression1)
print(expression2)
print(expression3)
def test_parse_var_dec():
parser = MuddParser(
'tests/bpl_files/test_parse_variable_declaration.bpl'
)
tree = parser.parse()
assert tree.kind == N_PROGRAM
assert tree.children[0].kind == N_DECLARATION_LIST
assert tree.children[0].children[0].kind == N_DECLARATION_LIST
assert tree.children[0].children[1].kind == N_DECLARATION
declaration1 = tree.children[0].children[1]
assert declaration1.children[0].kind == N_VAR_DEC
assert declaration1.children[0].children[0].kind == N_TYPE_SPECIFIER
assert declaration1.children[0].children[1].kind == T_ID
assert declaration1.children[0].children[2].kind == T_SEMICOL
declaration2 = tree.children[0].children[0].children[1]
assert declaration2.children[0].kind == N_VAR_DEC
assert declaration2.children[0].children[0].kind == N_TYPE_SPECIFIER
assert declaration2.children[0].children[1].kind == T_MUL
assert declaration2.children[0].children[2].kind == T_ID
assert declaration2.children[0].children[3].kind == T_SEMICOL
declaration3 = tree.children[0].children[0].children[0].children[0]
assert declaration3.children[0].kind == N_VAR_DEC
assert declaration3.children[0].children[0].kind == N_TYPE_SPECIFIER
assert declaration3.children[0].children[1].kind == T_ID
assert declaration3.children[0].children[2].kind == T_LBRACK
assert declaration3.children[0].children[3].kind == T_NUM
assert declaration3.children[0].children[4].kind == T_RBRACK
assert declaration3.children[0].children[5].kind == T_SEMICOL
print(declaration1)
print(declaration2)
print(declaration3)
def test_parse_expression():
parser = MuddParser('tests/bpl_files/test_parse_expression.bpl')
tree = parser.parse()
fun_dec = tree.children[0].children[0].children[0]
statement_list = fun_dec.children[5].children[2]
statement1 = statement_list.children[1]
expression1 = statement1.children[0].children[0]
assert expression1.children[0].kind == N_VAR
assert expression1.children[0].children[0].kind == T_MUL
assert expression1.children[0].children[1].kind == T_ID
assert expression1.children[1].kind == T_ASSIGN
assert expression1.children[2].kind == N_EXPRESSION
statement2 = statement_list.children[0].children[1]
expression2 = statement2.children[0].children[0]
assert expression2.children[0].kind == N_VAR
assert expression2.children[0].children[0].kind == T_ID
assert expression2.children[0].children[2].kind == N_EXPRESSION
assert expression2.children[1].kind == T_ASSIGN
assert expression2.children[2].kind == N_EXPRESSION
statement3 = statement_list.children[0].children[0].children[1]
expression3 = statement3.children[0].children[0]
assert expression3.children[0].kind == N_VAR
assert expression3.children[0].children[0].kind == T_ID
assert expression3.children[1].kind == T_ASSIGN
assert expression3.children[2].kind == N_EXPRESSION
print(expression1)
print(expression2)
print(expression3)
def test_parse_declaration():
parser = MuddParser('tests/bpl_files/test_parse_variable_declaration.bpl')
tree = parser.parse()
assert tree.kind == N_PROGRAM
assert tree.children[0].kind == N_DECLARATION_LIST
assert tree.children[0].children[0].kind == N_DECLARATION_LIST
assert tree.children[0].children[1].kind == N_DECLARATION
print(tree)
def test_parse_comp_exp():
parser = MuddParser('tests/bpl_files/test_parse_expression.bpl')
tree = parser.parse()
fun_dec = tree.children[0].children[0].children[0]
base_statement_list = fun_dec.children[5].children[2]
statement_list = base_statement_list.children[0].children[0].children[0]
statement = statement_list.children[1]
expression = statement.children[0].children[0]
comp_exp = expression.children[0]
assert comp_exp.kind == N_COMP_EXP
def test_parse_declaration():
parser = MuddParser(
'tests/bpl_files/test_parse_variable_declaration.bpl'
)
tree = parser.parse()
assert tree.kind == N_PROGRAM
assert tree.children[0].kind == N_DECLARATION_LIST
assert tree.children[0].children[0].kind == N_DECLARATION_LIST
assert tree.children[0].children[1].kind == N_DECLARATION
print(tree)
def test_parse_comp_exp():
parser = MuddParser(
'tests/bpl_files/test_parse_expression.bpl'
)
tree = parser.parse()
fun_dec = tree.children[0].children[0].children[0]
base_statement_list = fun_dec.children[5].children[2]
statement_list = base_statement_list.children[0].children[0].children[0]
statement = statement_list.children[1]
expression = statement.children[0].children[0]
comp_exp = expression.children[0]
assert comp_exp.kind == N_COMP_EXP
def test_parse_while_statement():
parser = MuddParser(
'tests/bpl_files/test_parse_statement_only_compound_statement.bpl')
tree = parser.parse()
compound_stmt = tree.children[0].children[0].children[0].children[5]
while_statement = compound_stmt.children[2].children[1].children[0]
assert while_statement.children[0].kind == T_WHILE
assert while_statement.children[1].kind == T_LPAREN
assert while_statement.children[2].kind == N_EXPRESSION
assert while_statement.children[3].kind == T_RPAREN
assert while_statement.children[4].kind == N_STATEMENT
print(while_statement)
def test_parse_while_statement():
parser = MuddParser(
'tests/bpl_files/test_parse_statement_only_compound_statement.bpl'
)
tree = parser.parse()
compound_stmt = tree.children[0].children[0].children[0].children[5]
while_statement = compound_stmt.children[2].children[1].children[0]
assert while_statement.children[0].kind == T_WHILE
assert while_statement.children[1].kind == T_LPAREN
assert while_statement.children[2].kind == N_EXPRESSION
assert while_statement.children[3].kind == T_RPAREN
assert while_statement.children[4].kind == N_STATEMENT
print(while_statement)
def test_parse_tree_constructor():
parser = MuddParser('factorial.bpl')
parser.scanner.get_next_token()
token = parser.scanner.next_token
parse_tree = ParseTree(token, 1)
assert 'children' in parse_tree.__dict__.keys()
assert 'kind' in parse_tree.__dict__.keys()
def test_parse_local_decs():
parser = MuddParser('tests/bpl_files/test_parse_local_decs.bpl')
tree = parser.parse()
fun_dec1 = tree.children[0].children[1].children[0]
assert fun_dec1.children[5].kind == N_COMPOUND_STMT
compound_stmt1 = fun_dec1.children[5]
local_decs1 = compound_stmt1.children[1]
assert not local_decs1.children
fun_dec2 = tree.children[0].children[0].children[0].children[0]
assert fun_dec2.children[5].kind == N_COMPOUND_STMT
compound_stmt2 = fun_dec2.children[5]
local_decs2 = compound_stmt2.children[1]
assert local_decs2.children[1].kind == N_VAR_DEC
assert local_decs2.children[0].children[1].kind == N_VAR_DEC
print(local_decs1)
print(local_decs2)
def test_parse_return_statement():
parser = MuddParser(
'tests/bpl_files/test_parse_statement_only_compound_statement.bpl')
tree = parser.parse()
compound_stmt = tree.children[0].children[0].children[0].children[5]
return_statement = compound_stmt.children[2].children[0].children[
0].children[0].children[1].children[0]
assert return_statement.children[0].kind == T_RETURN
assert return_statement.children[1].kind == T_SEMICOL
return_statement2 = compound_stmt.children[2].children[0].children[
0].children[0].children[0].children[1].children[0]
assert return_statement2.children[0].kind == T_RETURN
assert return_statement2.children[1].kind == N_EXPRESSION
assert return_statement2.children[2].kind == T_SEMICOL
print(return_statement)
print(return_statement2)
def test_parse_statement_only_compound_statement():
parser = MuddParser(
'tests/bpl_files/test_parse_statement_only_compound_statement.bpl')
tree = parser.parse()
assert tree.kind == N_PROGRAM
assert tree.children[0].kind == N_DECLARATION_LIST
assert tree.children[0].children[0].kind == N_DECLARATION
assert tree.children[0].children[0].children[0].kind == N_FUN_DEC
fun_dec = tree.children[0].children[0].children[0]
assert fun_dec.children[5].kind == N_COMPOUND_STMT
compound_stmt = fun_dec.children[5]
assert compound_stmt.children[0].kind == T_LCURLY
assert compound_stmt.children[1].kind == N_LOCAL_DECS
assert compound_stmt.children[2].kind == N_STATEMENT_LIST
assert compound_stmt.children[2].children[0].kind == N_STATEMENT_LIST
assert compound_stmt.children[2].children[1].kind == N_STATEMENT
assert compound_stmt.children[3].kind == T_RCURLY
def test_parse_local_decs():
parser = MuddParser(
'tests/bpl_files/test_parse_local_decs.bpl'
)
tree = parser.parse()
fun_dec1 = tree.children[0].children[1].children[0]
assert fun_dec1.children[5].kind == N_COMPOUND_STMT
compound_stmt1 = fun_dec1.children[5]
local_decs1 = compound_stmt1.children[1]
assert not local_decs1.children
fun_dec2 = tree.children[0].children[0].children[0].children[0]
assert fun_dec2.children[5].kind == N_COMPOUND_STMT
compound_stmt2 = fun_dec2.children[5]
local_decs2 = compound_stmt2.children[1]
assert local_decs2.children[1].kind == N_VAR_DEC
assert local_decs2.children[0].children[1].kind == N_VAR_DEC
print(local_decs1)
print(local_decs2)
def test_parse_return_statement():
parser = MuddParser(
'tests/bpl_files/test_parse_statement_only_compound_statement.bpl'
)
tree = parser.parse()
compound_stmt = tree.children[0].children[0].children[0].children[5]
return_statement = compound_stmt.children[
2].children[0].children[0].children[0].children[1].children[0]
assert return_statement.children[0].kind == T_RETURN
assert return_statement.children[1].kind == T_SEMICOL
return_statement2 = compound_stmt.children[
2].children[0].children[0].children[0].children[
0].children[1].children[0]
assert return_statement2.children[0].kind == T_RETURN
assert return_statement2.children[1].kind == N_EXPRESSION
assert return_statement2.children[2].kind == T_SEMICOL
print(return_statement)
print(return_statement2)
def test_parse_fun_call():
parser = MuddParser('tests/bpl_files/test_parse_expression.bpl')
tree = parser.parse()
fun_dec = tree.children[0].children[0].children[0]
base_statement_list = fun_dec.children[5].children[2]
statement_list = base_statement_list.children[0].children[0].children[
0].children[0]
statement = statement_list.children[1]
expression = statement.children[0].children[0]
comp_exp = expression.children[0]
fun_call = comp_exp.children[0].children[0].children[0].children[
0].children[0]
assert fun_call.kind == N_FUN_CALL
assert fun_call.children[0].kind == T_ID
assert fun_call.children[2].kind == N_ARGS
arg_list = fun_call.children[2].children[0]
assert arg_list.children[2].kind == N_EXPRESSION
assert arg_list.children[0].children[0].kind == N_EXPRESSION
print(fun_call)
def test_parse_statement_only_compound_statement():
parser = MuddParser(
'tests/bpl_files/test_parse_statement_only_compound_statement.bpl'
)
tree = parser.parse()
assert tree.kind == N_PROGRAM
assert tree.children[0].kind == N_DECLARATION_LIST
assert tree.children[0].children[0].kind == N_DECLARATION
assert tree.children[0].children[0].children[0].kind == N_FUN_DEC
fun_dec = tree.children[0].children[0].children[0]
assert fun_dec.children[5].kind == N_COMPOUND_STMT
compound_stmt = fun_dec.children[5]
assert compound_stmt.children[0].kind == T_LCURLY
assert compound_stmt.children[1].kind == N_LOCAL_DECS
assert compound_stmt.children[2].kind == N_STATEMENT_LIST
assert compound_stmt.children[2].children[0].kind == N_STATEMENT_LIST
assert compound_stmt.children[2].children[1].kind == N_STATEMENT
assert compound_stmt.children[3].kind == T_RCURLY
def test_parse_fun_call():
parser = MuddParser(
'tests/bpl_files/test_parse_expression.bpl'
)
tree = parser.parse()
fun_dec = tree.children[0].children[0].children[0]
base_statement_list = fun_dec.children[5].children[2]
statement_list = base_statement_list.children[
0].children[0].children[0].children[0]
statement = statement_list.children[1]
expression = statement.children[0].children[0]
comp_exp = expression.children[0]
fun_call = comp_exp.children[
0].children[0].children[0].children[0].children[0]
assert fun_call.kind == N_FUN_CALL
assert fun_call.children[0].kind == T_ID
assert fun_call.children[2].kind == N_ARGS
arg_list = fun_call.children[2].children[0]
assert arg_list.children[2].kind == N_EXPRESSION
assert arg_list.children[0].children[0].kind == N_EXPRESSION
print(fun_call)
def test_parse_write_statement():
parser = MuddParser(
'tests/bpl_files/test_parse_statement_only_compound_statement.bpl')
tree = parser.parse()
compound_stmt = tree.children[0].children[0].children[0].children[5]
write_statement = compound_stmt.children[2].children[0].children[
0].children[0].children[0].children[0].children[1].children[0]
assert write_statement.children[0].kind == T_WRITE
assert write_statement.children[1].kind == T_LPAREN
assert write_statement.children[2].kind == N_EXPRESSION
assert write_statement.children[3].kind == T_RPAREN
assert write_statement.children[4].kind == T_SEMICOL
writeln_statement = compound_stmt.children[2].children[0].children[
0].children[0].children[0].children[0].children[0].children[
1].children[0]
assert writeln_statement.children[0].kind == T_WRITELN
assert writeln_statement.children[1].kind == T_LPAREN
assert writeln_statement.children[2].kind == T_RPAREN
assert writeln_statement.children[3].kind == T_SEMICOL
print(write_statement)
print(writeln_statement)
def test_parse_fun_dec():
parser = MuddParser(
'tests/bpl_files/test_parse_function_declaration.bpl'
)
tree = parser.parse()
assert tree.kind == N_PROGRAM
assert tree.children[0].kind == N_DECLARATION_LIST
assert tree.children[0].children[0].kind == N_DECLARATION_LIST
assert tree.children[0].children[1].kind == N_DECLARATION
declaration1 = tree.children[0].children[1]
assert declaration1.children[0].kind == N_FUN_DEC
assert declaration1.children[0].children[0].kind == N_TYPE_SPECIFIER
assert declaration1.children[0].children[1].kind == T_ID
assert declaration1.children[0].children[2].kind == T_LPAREN
assert declaration1.children[0].children[3].kind == N_PARAMS
assert declaration1.children[0].children[4].kind == T_RPAREN
assert declaration1.children[0].children[5].kind == N_COMPOUND_STMT
void_params = declaration1.children[0].children[3]
assert void_params.children[0].kind == T_VOID
declaration2 = tree.children[0].children[0].children[0]
param_list_params = declaration2.children[0].children[3]
assert param_list_params.children[0].kind == N_PARAM_LIST
array_param = param_list_params.children[0].children[2]
assert array_param.children[0].kind == N_TYPE_SPECIFIER
assert array_param.children[1].kind == T_ID
assert array_param.children[2].kind == T_LBRACK
assert array_param.children[3].kind == T_RBRACK
pointer_param = param_list_params.children[0].children[0].children[2]
assert pointer_param.children[0].kind == N_TYPE_SPECIFIER
assert pointer_param.children[1].kind == T_MUL
assert pointer_param.children[2].kind == T_ID
id_param = param_list_params.children[
0].children[0].children[0].children[0]
assert id_param.children[0].kind == N_TYPE_SPECIFIER
assert id_param.children[1].kind == T_ID
print(void_params)
print(array_param)
print(pointer_param)
print(id_param)
def test_parse_if_statement():
parser = MuddParser(
'tests/bpl_files/test_parse_statement_only_compound_statement.bpl')
tree = parser.parse()
compound_stmt = tree.children[0].children[0].children[0].children[5]
if_statement = compound_stmt.children[2].children[0].children[0].children[
1].children[0]
assert if_statement.children[0].kind == T_IF
assert if_statement.children[1].kind == T_LPAREN
assert if_statement.children[2].kind == N_EXPRESSION
assert if_statement.children[3].kind == T_RPAREN
assert if_statement.children[4].kind == N_STATEMENT
if_else_statement = compound_stmt.children[2].children[0].children[
1].children[0]
assert if_else_statement.children[0].kind == T_IF
assert if_else_statement.children[1].kind == T_LPAREN
assert if_else_statement.children[2].kind == N_EXPRESSION
assert if_else_statement.children[3].kind == T_RPAREN
assert if_else_statement.children[4].kind == N_STATEMENT
assert if_else_statement.children[5].kind == T_ELSE
assert if_else_statement.children[6].kind == N_STATEMENT
print(if_statement)
print(if_else_statement)
def test_parse_write_statement():
parser = MuddParser(
'tests/bpl_files/test_parse_statement_only_compound_statement.bpl'
)
tree = parser.parse()
compound_stmt = tree.children[0].children[0].children[0].children[5]
write_statement = compound_stmt.children[
2].children[0].children[0].children[0].children[
0].children[0].children[1].children[0]
assert write_statement.children[0].kind == T_WRITE
assert write_statement.children[1].kind == T_LPAREN
assert write_statement.children[2].kind == N_EXPRESSION
assert write_statement.children[3].kind == T_RPAREN
assert write_statement.children[4].kind == T_SEMICOL
writeln_statement = compound_stmt.children[
2].children[0].children[0].children[0].children[
0].children[0].children[0].children[1].children[0]
assert writeln_statement.children[0].kind == T_WRITELN
assert writeln_statement.children[1].kind == T_LPAREN
assert writeln_statement.children[2].kind == T_RPAREN
assert writeln_statement.children[3].kind == T_SEMICOL
print(write_statement)
print(writeln_statement)
def test_parse_fun_dec():
parser = MuddParser('tests/bpl_files/test_parse_function_declaration.bpl')
tree = parser.parse()
assert tree.kind == N_PROGRAM
assert tree.children[0].kind == N_DECLARATION_LIST
assert tree.children[0].children[0].kind == N_DECLARATION_LIST
assert tree.children[0].children[1].kind == N_DECLARATION
declaration1 = tree.children[0].children[1]
assert declaration1.children[0].kind == N_FUN_DEC
assert declaration1.children[0].children[0].kind == N_TYPE_SPECIFIER
assert declaration1.children[0].children[1].kind == T_ID
assert declaration1.children[0].children[2].kind == T_LPAREN
assert declaration1.children[0].children[3].kind == N_PARAMS
assert declaration1.children[0].children[4].kind == T_RPAREN
assert declaration1.children[0].children[5].kind == N_COMPOUND_STMT
void_params = declaration1.children[0].children[3]
assert void_params.children[0].kind == T_VOID
declaration2 = tree.children[0].children[0].children[0]
param_list_params = declaration2.children[0].children[3]
assert param_list_params.children[0].kind == N_PARAM_LIST
array_param = param_list_params.children[0].children[2]
assert array_param.children[0].kind == N_TYPE_SPECIFIER
assert array_param.children[1].kind == T_ID
assert array_param.children[2].kind == T_LBRACK
assert array_param.children[3].kind == T_RBRACK
pointer_param = param_list_params.children[0].children[0].children[2]
assert pointer_param.children[0].kind == N_TYPE_SPECIFIER
assert pointer_param.children[1].kind == T_MUL
assert pointer_param.children[2].kind == T_ID
id_param = param_list_params.children[0].children[0].children[0].children[
0]
assert id_param.children[0].kind == N_TYPE_SPECIFIER
assert id_param.children[1].kind == T_ID
print(void_params)
print(array_param)
print(pointer_param)
print(id_param)
def test_parse_if_statement():
parser = MuddParser(
'tests/bpl_files/test_parse_statement_only_compound_statement.bpl'
)
tree = parser.parse()
compound_stmt = tree.children[0].children[0].children[0].children[5]
if_statement = compound_stmt.children[
2].children[0].children[0].children[1].children[0]
assert if_statement.children[0].kind == T_IF
assert if_statement.children[1].kind == T_LPAREN
assert if_statement.children[2].kind == N_EXPRESSION
assert if_statement.children[3].kind == T_RPAREN
assert if_statement.children[4].kind == N_STATEMENT
if_else_statement = compound_stmt.children[
2].children[0].children[1].children[0]
assert if_else_statement.children[0].kind == T_IF
assert if_else_statement.children[1].kind == T_LPAREN
assert if_else_statement.children[2].kind == N_EXPRESSION
assert if_else_statement.children[3].kind == T_RPAREN
assert if_else_statement.children[4].kind == N_STATEMENT
assert if_else_statement.children[5].kind == T_ELSE
assert if_else_statement.children[6].kind == N_STATEMENT
print(if_statement)
print(if_else_statement)
def test_parse_constructor():
assert 'parse' in MuddParser.__dict__.keys()
parser = MuddParser('factorial.bpl')
test_parser_attributes = parser.__dict__.keys()
assert 'scanner' in test_parser_attributes
assert 'parse_tree' in test_parser_attributes