---input---
package example

# Rego Policy References: https://www.openpolicyagent.org/docs/latest/policy-reference/

# assign variable x to value of field foo.bar.baz in input
x := input.foo.bar.baz

# check if variable x has same value as variable y
x == y

# check if variable x is a set containing "foo" and "bar"
x == {"foo", "bar"}

# OR

{"foo", "bar"} == x

---tokens---
'package'     Keyword
' '           Text.Whitespace
'example'     Name
'\n'          Text.Whitespace

'\n'          Text.Whitespace

'# Rego Policy References: https://www.openpolicyagent.org/docs/latest/policy-reference/' Comment.Single
'\n'          Text.Whitespace

'\n'          Text.Whitespace

'# assign variable x to value of field foo.bar.baz in input' Comment.Single
'\n'          Text.Whitespace

'x'           Name
' '           Text.Whitespace
':='          Operator
' '           Text.Whitespace
'input'       Name.Builtin
'.'           Punctuation
'foo'         Name
'.'           Punctuation
'bar'         Name
'.'           Punctuation
'baz'         Name
'\n'          Text.Whitespace

'\n'          Text.Whitespace

'# check if variable x has same value as variable y' Comment.Single
'\n'          Text.Whitespace

'x'           Name
' '           Text.Whitespace
'=='          Operator
' '           Text.Whitespace
'y'           Name
'\n'          Text.Whitespace

'\n'          Text.Whitespace

'# check if variable x is a set containing "foo" and "bar"' Comment.Single
'\n'          Text.Whitespace

'x'           Name
' '           Text.Whitespace
'=='          Operator
' '           Text.Whitespace
'{'           Punctuation
'"foo"'       Literal.String.Double
','           Punctuation
' '           Text.Whitespace
'"bar"'       Literal.String.Double
'}'           Punctuation
'\n'          Text.Whitespace

'\n'          Text.Whitespace

'# OR'        Comment.Single
'\n'          Text.Whitespace

'\n'          Text.Whitespace

'{'           Punctuation
'"foo"'       Literal.String.Double
','           Punctuation
' '           Text.Whitespace
'"bar"'       Literal.String.Double
'}'           Punctuation
' '           Text.Whitespace
'=='          Operator
' '           Text.Whitespace
'x'           Name
'\n'          Text.Whitespace