Agent iSolutions - Language

Documentation

Language Specification - Usage

This document defines the modeling language for Brahms. This document is to be used by model builders to create Brahms models. Brahms model builders will have to comply to the language as defined in this document. This document is also used as a requirements specification for the parser that needs to be build to parse these models.

The language element are defined in BNF (Backus Naur Form) grammar rules. The notation used in these grammar rules is given in table 1.

Construct	Interpretation
::= * + {} [] \| .	Symbols part of the BNF formalism
X ::= Y	The syntax of X is defined by Y
{X}	Zero or one occurrence of X
X*	Zero or more occurrences of X
X+	One or more occurrences of X
X \| Y	One of X or Y (exclusive or)
[X]	Grouping construct for specifying scope of operators e.g. [X\|Y] or [X]*
symbol	Predefined terminal symbol of the language
symbol	User-defined terminal symbol of the language
symbol	Non-terminal symbol

Table 1: Synopsis of the notation used in BNF grammar rules