Package grammar contains generated Go code produced by ANTLR V4.

Package varparse implements a parser to get variable references from strings.

Create a pair variable reference.

Convenience function to create and initialize a type declaration.

Create a variable reference.

Create and initialize a new variable type declaration.

Symbol-creator for symbol table: creates tag symbol.

We're tracing to the InterpreterTracer.

Helper: get a type from a string.

Helper: get a type as string.

Predefined variable types.

Predefined variable types.

Predefined variable types.

Predefined variable types.

Predefined variable types.

Predefined variable types.

Predefined variable types.

Predefined variable types.

Predefined variable types.

Predefined variable types.

Predefined variable types.

Variables of type pair will use two sub-symbols for the x-part and y-part of the pair respectively.

MetaFont declares variables explicitly ("numeric x;") or dynamically ("x=1" ⟹ x is of type numeric).

Variable reference look like "x", "x2", "hello.world" or "a[4.32].b".

VariableType represents the type of a variable (obviously).