Cosa (chi) è LR parser - definizione
LR parser
TYPE OF PARSER
LR(0) parser; LR parsers; Lr parser; LR(0); LR parsing; LR Parser; Shift-reduce conflict; LR grammar; LR(1) grammar; LR(k) grammar; LR(k)
In computer science, LR parsers are a type of bottom-up parser that analyse deterministic context-free languages in linear time. There are several variants of LR parsers: SLR parsers, LALR parsers, Canonical LR(1) parsers, Minimal LR(1) parsers, and GLR parsers.
Simple LR parser
TYPE OF LR PARSER WITH SMALL PARSE TABLES AND A RELATIVELY SIMPLE PARSER GENERATOR ALGORITHM
SLR parser; SLR(1)
In computer science, a Simple LR or SLR parser is a type of LR parser with small parse tables and a relatively simple parser generator algorithm. As with other types of LR(1) parser, an SLR parser is quite efficient at finding the single correct bottom-up parse in a single left-to-right scan over the input stream, without guesswork or backtracking.
LALR parser
LOOK-AHEAD LEFT-TO-RIGHT, RIGHTMOST DERIVATION PARSER
LALR; Lookahead LR parser; Look-ahead LR parser; LALR parsers; LALR(1); LALR parsing; LALR(2); Look-Ahead left-to-right; LR(*) parser; User:Paulbmann/sandbox; Draft:LALR(k)
In computer science, an LALR parser or Look-Ahead LR parser is a simplified version of a canonical LR parser, to parse a text according to a set of production rules specified by a formal grammar for a computer language. ("LR" means left-to-right, rightmost derivation.
