JDOQL BNF E Grammar notation The grammar notation
JDOQL BNF E 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 two right-hand sides, one that omits the optional element and one that includes it. When the words one of follow the colon in a grammar definition, they signify that each of the terminal symbols on the following line or lines is an alternative definition. Parameter declaration This section describes the syntax of the declareParameters() argument. DeclareParameters: Parameters ,opt Parameters: Parameter Parameters , Parameter Parameter: Type Identifier Variable declaration This section describes the syntax of the declareVariables() argument. DeclareVariables: Variables ;opt Variables:
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