mrachow

mrachow

The Definitive ANTLR 4 Reference: Build-in types commented ;-) as user-defined types (Page 66)

Section, Pattern: Choice (Alternatives)
This grammar line:

type:   ​'float'​ | ​'int'​ | ​'void'​ ; ​// user-defined types

A user defined type could maybe described by a set of keywords
supporting the definition of a type.
Say roughly in java keywords class, implements, extends.

Upfront sorry if I missed an explication though…

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