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LR parser

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 generalized LR parsers (GLR parsers). LR parsers can be generated by a parser generator from a formal…

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Overview

LR generator analysis

Table construction

Advanced semantic analysis

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Map overview Semantic statistics

LR parser

Nodes59
Edges58
Triples96
Avg. degree1.97
Density0.033898
Components1

How this topic connects Entity context

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LR parser

Top relations

related to External links · 11
LR parser → Algorithm, Ed, GNU Bison, Implementation, LALR, LR, Parser ConstructionThe Honalee LR, Parsing Simulator This, Parsing Techniques, Practical Guide, Reduce-reduce
related to Bottom-up parse stack · 10
LR parser → Every, In, Like, LR, Products, Reductions, So, The, This, Value
related to Lookahead sets · 10
LR parser → Follow, Follows, For, In, In SLR, LL, LR, SLR, Such, The
related to LR parse steps for example A * 2 + 1 · 10
LR parser → At, Besides, For, If, In, In LR, LR, The, These, Users
related to LR parser loop · 9
LR parser → Accept, Error, Look, Lookahead Action, Reduce, Shift, That, The, The LR
related to Bottom-up parse tree for example A * 2 + 1 · 8
LR parser → An LR, At, Nodes, None, Only, The, These, Those
related to Parse table for the example grammar · 6
LR parser → Bison, Entries, LR, Most LR, So, The
related to Theory · 6
LR parser → And, Donald Knuth, In, Knuth, LR, So
related to Shift and reduce actions · 5
LR parser → As, LR, Reduce, Shift, That
related to Syntax error recovery · 5
LR parser → But, If, In, LR, This

Important terminology Word statistics

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Important terminology

parser lr state parse grammar parsers stack symbol input table lookahead rule symbols next reduce states item slr shift action

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
Prolog.GLR Generalized LR parsers use LR bottom-up techniques to find all possible parses of input textinstance ofand harder to hand-modify than recursive descent parsers.Another variation replaces the parse table by pattern-matching rules in non-procedural languages0.80text
not just one correct parseinstance ofand harder to hand-modify than recursive descent parsers.Another variation replaces the parse table by pattern-matching rules in non-procedural languages0.80text
used for human languagesinstance ofThis is essential for ambiguous grammar0.80text
for human languages.While LRinstance ofnotation of LR parsers to the task of generating all possible parses for ambiguous grammars0.80text
LR parserrelated to Bottom-up parse stackLike0.60section
LR parserrelated to Bottom-up parse stackLR0.60section
LR parserrelated to Bottom-up parse stackThe0.60section
LR parserrelated to Bottom-up parse stackIn0.60section
LR parserrelated to Bottom-up parse stackValue0.60section
LR parserrelated to Bottom-up parse stackProducts0.60section
LR parserrelated to Bottom-up parse stackReductions0.60section
LR parserrelated to Bottom-up parse stackSo0.60section

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