---input---
label_replace(
    avg by(instance)
        (irate(node_cpu_seconds_total{mode = "idle"}[5m] offset 3s)
    ) * 100,
    "device",
    "cpu",
    "instance",
    ".*"
)

---tokens---
'label_replace' Keyword.Reserved
'('           Operator
'\n'          Text.Whitespace

'    '        Text.Whitespace
'avg'         Keyword
' '           Text.Whitespace
'by'          Keyword
'('           Operator
'instance'    Name.Variable
')'           Operator
'\n'          Text.Whitespace

'        '    Text.Whitespace
'('           Operator
'irate'       Keyword.Reserved
'('           Operator
'node_cpu_seconds_total' Name.Variable
'{'           Punctuation
'mode'        Name.Label
' '           Text.Whitespace
'='           Operator
' '           Text.Whitespace
'"'           Punctuation
'idle'        Literal.String
'"'           Punctuation
'}'           Punctuation
'['           Punctuation
'5m'          Literal.String
']'           Punctuation
' '           Text.Whitespace
'offset'      Keyword
' '           Text.Whitespace
'3s'          Literal.String
')'           Operator
'\n'          Text.Whitespace

'    '        Text.Whitespace
')'           Operator
' '           Text.Whitespace
'*'           Operator
' '           Text.Whitespace
'100'         Literal.Number.Integer
','           Punctuation
'\n'          Text.Whitespace

'    '        Text.Whitespace
'"'           Punctuation
'device'      Literal.String
'"'           Punctuation
','           Punctuation
'\n'          Text.Whitespace

'    '        Text.Whitespace
'"'           Punctuation
'cpu'         Literal.String
'"'           Punctuation
','           Punctuation
'\n'          Text.Whitespace

'    '        Text.Whitespace
'"'           Punctuation
'instance'    Literal.String
'"'           Punctuation
','           Punctuation
'\n'          Text.Whitespace

'    '        Text.Whitespace
'"'           Punctuation
'.*'          Literal.String
'"'           Punctuation
'\n'          Text.Whitespace

')'           Operator
'\n'          Text.Whitespace