Write a BNF grammar describing the syntax of BNF; i.e., define the syntax of BNF itself using BNF. Use a pair of single quotes to use meta symbols like | and -> as terminal symbols, e.g., '|' and '->'. You may assume that non-terminals such as and are already defined.
Write a BNF grammar describing the syntax of BNF; i.e., define the syntax of BNF itself using BNF. Use a pair of single quotes to use meta symbols like | and -> as terminal symbols, e.g., '|' and '->'. You may assume that non-terminals such as <identifier> and <special-symbol> are already defined.
Backus-Naur Form (BNF) is a widely used metasyntax notation for formally describing the syntax of programming languages, file formats, and various other formal languages. To define the syntax of BNF itself, we can use BNF notation. This means creating a BNF grammar that describes the structure and rules governing BNF specifications. In this recursive approach, we will utilize BNF notation to define the syntax of BNF, allowing us to express how BNF rules are written and structured. The resulting BNF grammar for BNF serves as a meta-definition for specifying the syntax of other languages using BNF.
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