New allocates a new parse tree with the given name.

Parse parses the yacc file text with optional name.

TypLiteral is the literal type.

TypToken is the token type.

ExpressionNode hold a single expression.

Item hold an item.

ProductionNode holds is a named production of multiple expressions.

Tree is the representation of a single parsed file.

ItemTyp is the item type.

Pos represents a byte position in the original input text from which this template was parsed.