Browsable AWK Grammar

Grammar extracted by Vadim Zaytsev, see the Grammar Zoo entry for details: awk/bruneliere/extracted
Source used for this grammar: Hugo Brunelière, AWKPrograms.ecore, 2005/08/09

Summary

• Total 16 production rules with 17 top alternatives and 102 symbols.
• Vocabulary: 32 = 14 nonterminals + 2 terminals + 16 labels + 0 markers.
• Total 14 nonterminal symbols: 14 defined (Integer, String, Boolean, AWKProgram, File, Record, Field, Script, Rule, Pattern, Action, Instruction, InitialRule, FinalRule), 0 root (—), 3 top (Integer, Boolean, AWKProgram), 0 bottom (—).
• Total 2 terminal symbols: 2 keywords ("true", "false"), 0 letters (—), 0 numerics (—), 0 signs (—).
• Total 16 labels: [name] ³, [input], [output], [script], [records], [r_file], [fields], [value] ², [f_record], [rules], [r_script] ³, [pattern] ³, [action] ³, [regularExpression], [instructions], [i_action].

Syntax

Integer ::=
	integer

String ::=
	string

Boolean ::=
	"true"
	"false"

AWKProgram ::=
	[name]::String [input]::File [output]::File [script]::Script

File ::=
	[name]::String [records]::Record+

Record ::=
	[r_file]::File [fields]::Field+

Field ::=
	[value]::String [f_record]::Record

Script ::=
	[name]::String [rules]::Rule+

Rule ::=
	InitialRule

Rule ::=
	FinalRule

Rule ::=
	[r_script]::Script [pattern]::Pattern [action]::Action

Pattern ::=
	[regularExpression]::String

Action ::=
	[instructions]::Instruction+

Instruction ::=
	[value]::String [i_action]::Action

InitialRule ::=
	[r_script]::Script [pattern]::Pattern [action]::Action

FinalRule ::=
	[r_script]::Script [pattern]::Pattern [action]::Action

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