2.3 Identifiers and keywords

Identifiers (also referred to as names) are described by the following lexical definitions:

identifier ::= (letter|"_") (letter | digit | "_")*

letter ::= lowercase | uppercase

lowercase ::= "a"..."z"

uppercase ::= "A"..."Z"

digit ::= "0"..."9"

Download entire grammar as text.

Identifiers are unlimited in length. Case is significant.

• 2.3.1 Keywords
• 2.3.2 Reserved classes of identifiers