NewParser returns a new instance of Parser.

Quote returns a quoted string.

AND.

EOF token represents end of statement.

=.

false.

>.

>=.

ILLEGAL token represent illegal token found in the statement.

(.

<.

<=.

!=.

NOT.

12345.67.

OR.

).

"abc".

true.

BinaryExpr represents an operation between two expressions.

BooleanLiteral represents a boolean literal.

NumberLiteral represents a numeric literal.

ParenExpr represents a parenthesized expression.

Parser encapsulates the scanner and responsible for returning AST composed of statements read from a given reader.

StringLiteral represents a string literal.

Expr represents an expression that can be evaluated to a value.

Node represents a node in the conditions abstract syntax tree.

Token represents a lexical token.