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BS ISO/IEC 14977:1996

Current
Current

The latest, up-to-date edition.

Information technology. Syntactic Metalanguage. Extended BNF
Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

02-15-1998

Foreword
Introduction
1 Scope
2 Normative references
3 Definitions
4 The form of each syntactic element of Extended BNF
    4.1 General
    4.2 Syntax
    4.3 Syntax-rule
    4.4 Definitions-list
    4.5 Single-definition
    4.6 Syntactic-term
    4.7 Syntactic exception
    4.8 Syntactic-factor
    4.9 Integer
    4.10 Syntactic-primary
    4.11 Optional-sequence
    4.12 Repeated-sequence
    4.13 Grouped sequence
    4.14 Meta-identifier
    4.15 Meta-identifier-character
    4.16 Terminal-string
    4.17 First-terminal-character
    4.18 Second-terminal-character
    4.19 Special-sequence
    4.20 Special-sequence-character
    4.21 Empty-sequence
    4.22 Further examples
5 The symbols represented by each syntactic element
    5.1 General
    5.2 Terminal-string
    5.3 Meta-identifier
    5.4 Grouped-sequence
    5.5 Optional-sequence
    5.6 Repeated-sequence
    5.7 Syntactic-factor
    5.8 Syntactic-term
    5.9 Single-definition
    5.10 Definitions-list
    5.11 Special-sequence
    5.12 Empty-sequence
6 Layout and Comments
    6.1 General
    6.2 Terminal-character
    6.3 Gap-free-symbol
    6.4 Gap-separator
    6.5 Commentless-symbol
    6.6 Comment-symbol
    6.7 Bracketed-textual-comment
7 The representation of each terminal-character in
    Extended BNF
    7.1 General
    7.2 Letters and digits
    7.3 Other terminal characters
    7.4 Alternative representations
    7.5 Other-character
    7.6 Gap-separator
    7.7 Terminal-characters represented by a pair of
          characters
    7.8 Invalid character sequences
8 Examples
    8.1 The syntax of Extended BNF
    8.2 Extended BNF used to define itself informally
    8.3 Extended BNF defined informally
Annexes
A Two-level grammars
B Bibliography

Specifies a notation, Extended BNF, for defining the syntax of a linear sequence of symbols. Specifies both the logical structure and its graphical representation.

This International Standard defines a notation, Extended BNF, for specifying the syntax of a linear sequence of symbols. It defines both the logical structure of the notation and its graphical representation.

Extended BNF has applications in the definition of programming and other languages, as well as in other formal definitions, for example the commands to an operating system, or the precise format of data and results.

Examples of Extended BNF are given in clause8.

NOTE— Like many other notations, Extended BNF can still be misused; thus it does not prevent someone from trying to define an unparsable or ambiguous language.

Committee
IST/5
DevelopmentNote
Supersedes 95/645305 DC. (08/2005)
DocumentType
Standard
Pages
24
PublisherName
British Standards Institution
Status
Current

Standards Relationship
ISO/IEC 14977 : 1996(R2018) Identical
ISO/IEC 14977:1996 Identical

10/30237353 DC : 0 BS ISO/IEC 29341-14-12 - INFORMATION TECHNOLOGY - UPNP DEVICE ARCHITECTURE - PART 14-12: AUDIO VIDEO DEVICE CONTROL PROTOCOL - LEVEL 3 - AUDIO VIDEO CONTENT DIRECTORY SERVICE
10/30237350 DC : 0 BS ISO/IEC 29341-14-3 - INFORMATION TECHNOLOGY - UPNP DEVICE ARCHITECTURE - PART 14-3: AUDIO VIDEO DEVICE CONTROL PROTOCOL - LEVEL 3 - MEDIA SERVER DEVICE

ISO/IEC 9945-2:2003 Information technology Portable Operating System Interface (POSIX) Part 2: System Interfaces
ISO/IEC 6429:1992 Information technology Control functions for coded character sets
ISO/IEC 1989:2014 Information technology — Programming languages, their environments and system software interfaces — Programming language COBOL
BS 5905:1980 Specification for computer programming language CORAL 66
ISO 1539:1980 Programming languages FORTRAN
ISO/IEC 2382-15:1999 Information technology Vocabulary Part 15: Programming languages
BS 5904:1980 Specification for computer programming language RTL/2
BS 6154:1981 Method of defining syntactic metalanguage
ISO/IEC 646:1991 Information technology ISO 7-bit coded character set for information interchange

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