Browsable BNF Grammar

Grammar extracted by Vadim Zaytsev, see the Grammar Zoo entry for details: §wip/metasyntax/bnf-sdf/extracted
Source used for this grammar: Tijs van der Storm, BNF.sdf, 28 March 2003

Summary

• Total 6 production rules with 19 top alternatives and 60 symbols.
• Vocabulary: 15 = 6 nonterminals + 9 terminals + 0 labels + 0 markers.
• Total 6 nonterminal symbols: 6 defined (Rules, Rule, NonTerminal, Elements, Element, Terminal), 1 root (Rules), 0 top (—), 0 bottom (—).
• Total 9 terminal symbols: 0 keywords (—), 0 letters (—), 0 numerics (—), 9 signs ("::=" ², "<" ², ">" ², "|" ⁴, "[" ², "]" ², "{" ², "}" ², "...").

Syntax

Rules ::=
	Rule*

Rule ::=
	NonTerminal "::=" Elements

NonTerminal ::=
	"<" string ">"

Elements ::=
	Element ("|" Element)*

Element ::=
	NonTerminal
	Terminal
	"[" Element ("|" Element)* "]"
	"{" Element ("|" Element)* "}"
	"|"
	"["
	"]"
	"{"
	"}"
	"<"
	">"
	"..."
	"::="
	Element Element

Terminal ::=
	string

Maintained by Dr. Vadim Zaytsev a.k.a. @grammarware. Last updated in September 2015. [↑]