Grammar notation
The grammar notation is taken from the Java Language Specification. Terminal symbols are shown in bold in the productions of the lexical and syntactic grammars, and throughout this specification whenever the text is directly referring to such a terminal symbol. These are to appear in a program exactly as written.
Non-terminal symbols are shown in italic type. The definition of a non-terminal is introduced by the name of the non-terminal being defined followed by a colon. One or more alternative right-hand sides for the non-terminal then follow on succeeding lines.
The suffix “opt”, which may appear after a terminal or non-terminal, indicates an optional symbol. The alternative containing the optional symbol actually specifies ...
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