LR1 grammar - meaning and definition. What is LR1 grammar
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What (who) is LR1 grammar - definition

ONE OF THE TWO MAIN NOTATION TECHNIQUES FOR CONTEXT-FREE GRAMMARS IN COMPUTER SCIENCE
W-grammar; VW-grammar

Tagalog grammar         
  • (12a) Syntax tree, made with http://mshang.ca/syntree/
  • (12a), Syntax tree adapted from Sabbagh (2014), example 62, made with http://mshang.ca/syntree/
  • (13a) Syntax tree, adapted from Sabbagh (2014), 70 (55), made with http://mshang.ca/syntree/
GRAMMAR OF THE TAGALOG LANGUAGE
Filipino grammar; Tagalog Grammar; Filipino Grammar
Tagalog grammar (Tagalog: Balarilà ng Tagalog) is the body of rules that describe the structure of expressions in the Tagalog language, the language of the Tagalog region of the Philippines.
Ilocano grammar         
GRAMMAR OF ILOCANO, A NORTHERN PHILIPPINE LANGUAGE
Iloko grammar; Iloco grammar; Ilokano grammar
Ilocano grammar is the study of the morphological and syntactic structures of the Ilocano language, a language spoken in the northern Philippines by ethnic Ilocanos and Ilocano communities in the US, Saudi Arabia and other countries around the globe.
Serbo-Croatian grammar         
  • Frequency of [[relativizer]]s
  • Book cover of [[Snježana Kordić]]'s Grammar book ''Serbo-Croatian'' 1st pub. 1997, 2nd pub. 2006 ([https://www.webcitation.org/6AE3FeWzm Contents])
GRAMMAR OF THE SERBO-CROATIAN LANGUAGE
Serbian grammar; Serbian adjectives; Croatian grammar; Serbo-croatian grammar; SC grammar; Bosnian grammar; Montenegrin grammar; Croatian Grammar; Serbian conjugation; Serbian and Croatian grammar
Serbo-Croatian is a South Slavic language that, like most other Slavic languages, has an extensive system of inflection. This article describes exclusively the grammar of the Shtokavian dialect, which is a part of the South Slavic dialect continuum and the basis for the Bosnian, Croatian, Montenegrin, and Serbian standard variants of Serbo-Croatian..

Wikipedia

Van Wijngaarden grammar

In computer science, Van Wijngaarden grammars (also vW-grammars or W-grammars) are a formalism for defining formal languages invented by Adriaan van Wijngaarden for the purpose of defining the ALGOL 68 programming language. The resulting specification remains its most notable application.

W-grammars are two-level grammars: they are defined by a pair of grammars, that operate on different levels:

  • the hypergrammar is an attribute grammar, i.e. a set of context-free grammar rules in which the nonterminals may have attributes; and
  • the metagrammar is a context-free grammar defining possible values for these attributes.

The set of strings generated by a W-grammar is defined by a two-stage process:

  1. within each hyperrule, for each attribute that occurs in it, pick a value for it generated by the metagrammar; the result is a normal context-free grammar rule; do this in every possible way;
  2. use the resulting (possibly infinite) context-free grammar to generate strings in the normal way.

The consistent substitution used in the first step is the same as substitution in predicate logic, and actually supports logic programming; it corresponds to unification in Prolog, as noted by Alain Colmerauer.

W-grammars are Turing complete; hence, all decision problems regarding the languages they generate, such as

  • whether a W-grammar generates a given string
  • whether a W-grammar generates no strings at all

are undecidable.

Curtailed variants, known as affix grammars, were developed, and applied in compiler construction and to the description of natural languages.

Another curtailed version of W-grammars is Prolog, the logic programming language.