computer science, an LL parser (left-to-right, leftmost derivation) is a top-down parser for a restricted context-free language. It parses the input from Left...
31 KB (4,481 words) - 22:37, 23 May 2025
An LL parser has to decide or guess what it is seeing much sooner, when it has only seen the leftmost input symbol of that pattern. An LR parser scans...
62 KB (8,130 words) - 20:10, 28 April 2025
In computer science, an LALR parser (look-ahead, left-to-right, rightmost derivation parser) is part of the compiling process where human readable text...
11 KB (1,470 words) - 12:41, 29 November 2024
article is about the formal properties of LL grammars; for parsing, see LL parser or recursive descent parser. Given a natural number k ≥ 0 {\displaystyle...
14 KB (1,997 words) - 10:49, 7 December 2023
predictive parser is a recursive descent parser that does not require backtracking. Predictive parsing is possible only for the class of LL(k) grammars...
10 KB (1,109 words) - 12:39, 25 October 2024
parser. This leads to an algorithm known as Generalized LL parsing, in which you use a GSS, left-recursion curtailment, and an LL(k) parser to parse input...
11 KB (1,368 words) - 14:32, 2 August 2024
Lexical analysis LL parser: a relatively simple linear time parsing algorithm for a limited class of context-free grammars LR parser: A more complex linear...
37 KB (4,880 words) - 03:36, 30 May 2025
some inputs, the depth of the parse tree can be proportional to the input size, so both an LR parser and a packrat parser will appear to have the same...
47 KB (6,505 words) - 20:06, 19 June 2025
In computer science, the Earley parser is an algorithm for parsing strings that belong to a given context-free language, though (depending on the variant)...
16 KB (1,587 words) - 01:05, 28 April 2025
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...
6 KB (871 words) - 11:35, 11 May 2025
2023-11-30. "The Lezer Parser System". "Building a ShopifyQL Code Editor". Shopify. Retrieved 2023-12-06. "Sponsoring the Lezer parser system | Tines". www...
50 KB (1,133 words) - 03:56, 22 May 2025
systems, as an alternative to ls -l LL parser, in computer science L (New York City Subway service), formerly designated LL LL, the ICAO prefix for airports...
2 KB (301 words) - 22:55, 9 October 2024
lookahead LR parser (LALR) generator is a software tool that reads a context-free grammar (CFG) and creates an LALR parser which is capable of parsing files...
6 KB (789 words) - 12:53, 30 July 2024
History of compiler construction (category Parsing algorithms)
writers, because such a parser is simple and efficient to implement. LL(k) grammars can be parsed by a recursive descent parser which is usually coded...
53 KB (6,447 words) - 13:54, 6 June 2025
A canonical LR parser (also called a LR(1) parser) is a type of bottom-up parsing algorithm used in computer science to analyze and process programming...
15 KB (2,253 words) - 23:14, 6 September 2024
general-purpose parsing algorithms: CYK algorithm (for grammars in Chomsky normal form) Earley parser GLR parser LL parser (only for the proper subclass of LL(k) grammars)...
46 KB (6,141 words) - 18:51, 17 June 2025
The Spirit Parser Framework is an object oriented recursive descent parser generator framework implemented using template metaprogramming techniques....
4 KB (314 words) - 21:41, 22 March 2025
The Packrat parser is a type of parser that shares similarities with the recursive descent parser in its construction. However, it differs because it...
32 KB (1,852 words) - 05:51, 25 May 2025
Compiler-compiler (redirect from Parser generator)
TREE-META Yacc Xtext XPL JavaCC Parsing expression grammar LL parser LR parser Simple LR parser LALR parser GLR parser Domain analysis Domain-specific...
41 KB (5,129 words) - 00:57, 18 May 2025
interest, as they can be parsed in linear time and in fact a parser can be automatically generated from the grammar by a parser generator. They are thus...
4 KB (512 words) - 16:32, 17 July 2024
and scope. Often a subset of grammars is used to make parsing easier, such as by an LL parser. For example, the context-free language L = { a n b n ∣...
12 KB (1,348 words) - 19:34, 7 May 2025
make them easier to parse; while the LR parser can parse any DCFL in linear time, the simple LALR parser and even simpler LL parser are more efficient...
20 KB (2,436 words) - 19:58, 7 June 2025
parser combinator is a higher-order function that accepts several parsers as input and returns a new parser as its output. In this context, a parser is...
13 KB (1,678 words) - 10:15, 11 January 2025
automata) Syntax analysis (including context-free grammars, LL parsers, bottom-up parsers, and LR parsers) Syntax-directed translation Type checking (including...
5 KB (433 words) - 21:44, 26 January 2025
Parse Table may refer to table-driven versions of: An LR parser using tables derived from a grammar by a parser generator An LL parser using tables derived...
202 bytes (63 words) - 17:17, 29 December 2019
List of algorithms (redirect from List of parsing algorithms)
Lexical analysis LL parser: a relatively simple linear time parsing algorithm for a limited class of context-free grammars LR parser: A more complex linear...
72 KB (7,951 words) - 17:13, 5 June 2025
ANTLR (category Parser generators)
or ANother Tool for Language Recognition, is a parser generator that uses a LL(*) algorithm for parsing. ANTLR is the successor to the Purdue Compiler...
12 KB (1,099 words) - 13:58, 11 June 2025
Syntactic predicate (category Parsing)
effective means of dramatically improving the recognition strength of an LL parser by providing arbitrary lookahead. In their original implementation, syntactic...
15 KB (1,813 words) - 15:28, 16 December 2024
grammar into a working parser. Strictly speaking, a generative grammar does not in any way correspond to the algorithm used to parse a language, and various...
24 KB (3,450 words) - 20:46, 12 May 2025
SLR grammar (section Parsing algorithm)
Simple LR parser. SLR grammars are a superset of all LR(0) grammars and a subset of all LALR(1) and LR(1) grammars. When processed by an SLR parser, an SLR...
4 KB (684 words) - 19:47, 9 March 2022