def test_parse_block_with_no_expression():
stream = (
tokens.LiteralToken("dimension", 1),
tokens.ValueToken(1),
tokens.LiteralToken("dimension_name", 1),
tokens.BlockStartToken(1),
tokens.BlockEndToken(1),
tokens.StreamEndToken(1),
)
parser = lkml.parser.Parser(stream)
result = parser.parse_block()
assert result == {"dimension": {"name": "dimension_name"}}
def test_parse_block_without_closing_curly_brace():
stream = (
tokens.LiteralToken("view", 1),
tokens.ValueToken(1),
tokens.BlockStartToken(1),
tokens.LiteralToken("hidden", 2),
tokens.ValueToken(2),
tokens.LiteralToken("yes", 2),
tokens.StreamEndToken(3),
)
parser = lkml.parser.Parser(stream)
result = parser.parse_block()
assert result is None
def scan(self) -> Tuple[tokens.Token, ...]:
self.tokens.append(tokens.StreamStartToken(self.line_number))
while True:
self.scan_until_token()
ch = self.peek()
if ch == "\0":
self.tokens.append(tokens.StreamEndToken(self.line_number))
break
elif ch == "{":
self.advance()
self.tokens.append(tokens.BlockStartToken(self.line_number))
elif ch == "}":
self.advance()
self.tokens.append(tokens.BlockEndToken(self.line_number))
elif ch == "[":
self.advance()
self.tokens.append(tokens.ListStartToken(self.line_number))
elif ch == "]":
self.advance()
self.tokens.append(tokens.ListEndToken(self.line_number))
elif ch == ",":
self.advance()
self.tokens.append(tokens.CommaToken(self.line_number))
elif ch == ":":
self.advance()
self.tokens.append(tokens.ValueToken(self.line_number))
elif ch == ";":
if self.peek_multiple(2) == ";;":
self.advance(2)
self.tokens.append(tokens.ExpressionBlockEndToken(self.line_number))
elif ch == '"':
self.advance()
self.tokens.append(self.scan_quoted_literal())
elif (
self.peek_multiple(3) == "sql"
or self.peek_multiple(4) == "html"
or self.peek_multiple(24) == "expression_custom_filter"
):
self.tokens.append(self.scan_literal())
self.scan_until_token()
self.advance()
self.tokens.append(tokens.ValueToken(self.line_number))
self.scan_until_token()
self.tokens.append(self.scan_expression_block())
else:
# TODO: This should actually check for valid literals first
# and throw an error if it doesn't match
self.tokens.append(self.scan_literal())
return tuple(self.tokens)
def test_parse_block_with_no_expression():
stream = (
tokens.LiteralToken("dimension", 1),
tokens.ValueToken(1),
tokens.WhitespaceToken(" ", 1),
tokens.LiteralToken("dimension_name", 1),
tokens.WhitespaceToken(" ", 1),
tokens.BlockStartToken(1),
tokens.BlockEndToken(1),
tokens.WhitespaceToken(" ", 1),
tokens.StreamEndToken(1),
)
parser = lkml.parser.Parser(stream)
result = parser.parse_block()
assert result == BlockNode(
type=SyntaxToken("dimension"),
name=SyntaxToken("dimension_name"),
left_brace=LeftCurlyBrace(prefix=" "),
container=ContainerNode(items=tuple()),
right_brace=RightCurlyBrace(suffix=" "),
)
def parser():
stream = (
tokens.StreamStartToken(1),
tokens.LiteralToken("view", 1),
tokens.ValueToken(1),
tokens.LiteralToken("view_name", 1),
tokens.BlockStartToken(1),
tokens.LiteralToken("sql_table_name", 2),
tokens.ValueToken(2),
tokens.ExpressionBlockToken("schema.table_name", 2),
tokens.ExpressionBlockEndToken(2),
tokens.LiteralToken("drill_fields", 3),
tokens.ValueToken(3),
tokens.ListStartToken(3),
tokens.LiteralToken("view_name.field_one", 3),
tokens.CommaToken(3),
tokens.LiteralToken("view_name.field_two", 3),
tokens.ListEndToken(3),
tokens.BlockEndToken(4),
tokens.StreamEndToken(4),
)
return lkml.parser.Parser(stream)
lexer.scan_until_token()
result = lexer.peek()
assert result == "S"
def test_scan_until_token_skips_comments():
text = "# This is a comment\nStart here"
lexer = lkml.Lexer(text)
lexer.scan_until_token()
result = lexer.peek()
assert result == "S"
params = [
("\0", tokens.StreamEndToken(1)),
("{", tokens.BlockStartToken(1)),
("}", tokens.BlockEndToken(1)),
("[", tokens.ListStartToken(1)),
("]", tokens.ListEndToken(1)),
(",", tokens.CommaToken(1)),
(":", tokens.ValueToken(1)),
(";;", tokens.ExpressionBlockEndToken(1)),
]
@pytest.mark.parametrize("text,expected", params)
def test_scan_all_simple_tokens(text, expected):
lexer = lkml.Lexer(text)
result = lexer.scan()
# Skip stream start token appended at the beginning
assert result[1] == expected