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Topic: LALR


In the News (Tue 29 Dec 09)

  
  cocktail-1.1 README
Lalr is a LALR(1) parser generator accepting grammars writ- ten in extended BNF notation which may be augmented by semantic actions expressed by statements of the target language.
In case of LR-conflicts unlike other tools Lalr provides not only informa- tion about an internal state consisting of a set of items but it prints a derivation tree which is much more useful to analyze the problem.
Lalr generated parsers are 2-3 times faster than those of YACC.
hpux.connect.org.uk /hppd/hpux/Development/Tools/cocktail-1.1/readme.html   (1627 words)

  
 GOLD Parsing System - Left-to-Right Parsing   (Site not responding. Last check: 2007-10-14)
LALR Parsing, or "Lookahead LR parsing", is a variant of LR Parsing which most parser generators, such as YACC, implement.
The number of states eliminated by choosing LALR over LR is sometimes huge.
Typically, the LR / LALR parsing algorithms, like deterministic finite automata, are commonly represented by using a graph - albeit a more complex variant.
www.devincook.com /goldparser/concepts/lalr.htm   (697 words)

  
 LALR parser -- Facts, Info, and Encyclopedia article   (Site not responding. Last check: 2007-10-14)
LALR parser -- Facts, Info, and Encyclopedia article
It is a very popular type of (A computer program that divides code up into functional components) parser because it gives a good trade-off between the number of grammars it can deal with and the size of the parsing tables it requires.
Because the LOOKAHEAD set is specific to a particular parsing context, it can be more selective, therefore allowing finer distinctions than the FOLLOW set.
www.absoluteastronomy.com /encyclopedia/l/la/lalr_parser3.htm   (201 words)

  
 Latin American Literary Review Richard Boada   (Site not responding. Last check: 2007-10-14)
The LALR has also published material in the field of creative writing although the journal’s emphasis is predominately to publish scholarly articles and book reviews.
Articles that have been accepted for publication must be resent to the LALR editorial offices proofread and ready for printing according to the journal’s specifications.
The LALR states that since they depend on subscriptions for publication, they expect the contributors to subscribe to the journal.
www.louisville.edu /~raboad01/LALR.htm   (638 words)

  
 com.calitha.goldparser.lalr   (Site not responding. Last check: 2007-10-14)
An AcceptAction is an action in a LALR state which means that the input for the LALR parser is tokenized, parsed and accepted.
All actions in a LALR must be inherited from this class.
ReduceAction is an action that tells the LALR parser to reduce tokens according to a rule.
www.xs4all.nl /~rvanloen/docs/goldparser/com.calitha.goldparser.lalr.html   (78 words)

  
 [No title]
Lalr - A Generator for Efficient Parsers Describes details of the implementation of the parsers generated by lalr and further outstanding features of this tool.
Both, lalr and ell generate a module with the default name Parser which serves as basename for the file name, too.
It is possible to combine several scanners and parsers either generated by lalr or ell into one program as long as different module names are chosen.
www.cs.wichita.edu /~rodney/cocktail/doc/doc.doc/intro.doc   (2862 words)

  
 Glossary of Parsing Terms
LALR, or "lookahead LR" parsing, a slightly less powerful variant of LR parsing, produces much smaller parsing tables.
A "marked rule" is a grammar rule together with a "marked token" that indicates how much of the rule has already been matched and what input should be expected, starting with the marked token, if the remainder of the rule is to be matched.
In a traditional LALR parser, there are only four actions: the shift action, the reduce action, the accept action and the error action.
www.parsifalsoft.com /gloss.html   (7372 words)

  
 [No title]
J. Grosch, `Lalr - a Generator for Efficient Parsers', Software-Practice & Experience, 20, 1115-1135 (Nov. 1990).
To find out in which class your machine is in execute: make endian To convert the binary files from big-endian to little-endian or vice versa execute: make bin.conv Edit the first couple of lines in the Makefile to accomodate your needs.
To compile the programs execute: make To install the programs execute: make install Recent Changes -------------- Version 9208: - The scanner generator 'rex' and the parser generators 'lalr' and 'ell' allow to chose arbitrary names for the generated modules.
wotug.ukc.ac.uk /parallel/occam/compilers/spoc/gmd-tools/README   (1522 words)

  
 Free Compiler Construction Tools: Lexers, Parser Generators, Optimizers (thefreecountry.com)
Bison generates a parser when presented with a LALR (1) context-free grammar that is yacc compatible.
A compiler-compiler that avoids the problems of the LALR parsers (eg, when faced with shift/reduce and reduce/reduce conflicts) and LL parsers (with its restrictions due to left-recursive rules).
Lalr generates table-driven C or Modula-2 LALR parsers from grammars written in extended BNF notation, while Ell does the same for LL(1) parsers.
www.thefreecountry.com /programming/compilerconstruction.shtml   (2323 words)

  
 Parsetec   (Site not responding. Last check: 2007-10-14)
In 1993, LALR 4.3 was used to to create the Lotus Script language interpreter which resides in Lotus Notes.
In 1998, Advanced Micro Devices used LALR 5.0 to build an experimental C compiler to do research with parallel optimizations for the vectorized instructions in the AMD K6-2 chip.
In 1990, Information Builders began using LALR 4.0 for language development projects and eventually recommended that it be used for all language development efforts in the company.
www.parsetec.com /customers.html   (242 words)

  
 : Class lalr_item_set   (Site not responding. Last check: 2007-10-14)
This class provides fairly conventional set oriented operations (union, sub/super-set tests, etc.), as well as an LALR "closure" operation (see compute_closure()).
Compute the closure of the set using the LALR closure rules.
This routine assumes that nullability and first sets have been computed for all productions before it is called.
cag.lcs.mit.edu /~elliotw/sift/java_cup/lalr_item_set.html   (363 words)

  
 LALR - OneLook Dictionary Search
Tip: Click on the first link on a line below to go directly to a page where "LALR" is defined.
LALR : Free On-line Dictionary of Computing [home, info]
Phrases that include LALR: lalr parser, lalr parsers
www.onelook.com /cgi-bin/cgiwrap/bware/dofind.cgi?word=LALR   (85 words)

  
 Dissertation
In principle states that would be constructed by Knuth's method are merged as with LALR, NQLALR and SLR, but Pager avoids the case that the merging introduces a conflict which would be not present in the LR(k) table.
The only difference between Knuth's LR parsing and LALR parsing may be that with LALR an error is detected some reductions later than with an LR(k) table.
Pager [1977 PGM]) they use, and especially in the field between LALR and LR these criteria are quite important.
www.punctum.com /interest/diss/diss.html   (15059 words)

  
 Java CUP Documentation: Index   (Site not responding. Last check: 2007-10-14)
Build an LALR viable prefix recognition machine given a start production.
This class represents a state in the LALR viable prefix recognition machine.
This class represents a transition in an LALR viable prefix recognition machine.
samus.ardvaark.net /~brian/java/java_cup/index-all.html   (1716 words)

  
 Open Directory - Computers: Programming: Compilers: Lexer and Parser Generators   (Site not responding. Last check: 2007-10-14)
AnaGram: LALR Parser Generator - AnaGram provides a powerful grammar notation, special features for maintenance of highly configurable parsers, visual parsing and unique interactive debugging tools, supporting thread-safe parsers.
GNU Bison - A general-purpose parser generator that converts a grammar description for an LALR context-free grammar into a C program to parse that grammar.
LRgen Lexer and Parser Generator from Parsetec - LRgen is an LALR parser generator and LALR lexer generator, featuring TBNF grammar notation and LALR lexers for parser and compiler development.
dmoz.org /Computers/Programming/Compilers/Lexer_and_Parser_Generators   (1715 words)

  
 An LALR Extension for DCGs in Dynamic Programming - Ferro, Pardo (ResearchIndex)   (Site not responding. Last check: 2007-10-14)
Abstract: We propose a parsing model for natural languages based on the concept of definite clause grammar.
Our work embodies in a common frame a dynamic programming construction developed for logical push-down automata, and techniques that restrict the computation to a useful part of the search space inspired by LALR parsing.
An LALR extension for DCGs in dynamic programming.
citeseer.ist.psu.edu /182635.html   (577 words)

  
 Comp.compilers: Re: LR Grammars not in LALR(1) or LR(1)
However, given all of this, from the practical point of view, I think
LALR grammar from the ambiguous one for any grammar you are likely to
one could mechanically generate an unambiguous LALR grammar from one
compilers.iecc.com /comparch/article/02-10-015   (823 words)

  
 compilers.net > directory > parser generators
The Java based Constructor of Useful Parsers (CUP for short) is a system for generating LALR parsers from simple specifications.
The grammar may be ambiguous or more general than ELL(1): there are both static and dynamic facilities to resolve the ambiguities.
An LALR parser generator, lexer generator, symbol-table builder, abstract-syntax-tree construction and intermediate code emitter, in short, a compiler front-end generator.
www.compilers.net /Dir/ParserGens.htm   (1124 words)

  
 Package: lang/lisp/code/parsing/lalr/   (Site not responding. Last check: 2007-10-14)
LALR is a parser generator for Common Lisp (a Lisp version of YACC).
Given a CFG grammar, a list of lexical or terminal categories, and an atomic end marker, produces Lisp code for a LALR(1) parser for the grammar.
Cognitive and Linguistic Sciences Brown University, Box 1978 Providence, RI 02912 Tel: 401-863-1670 Fax: 401-863-2255 Keywords: Authors!Johnson, Brown University, Interface Tools, LALR Parser Generator, Lisp!Parsing, Parsing References: ?
www-2.cs.cmu.edu /afs/cs/project/ai-repository/ai/lang/lisp/code/parsing/lalr/0.html   (101 words)

  
 LR Parsing   (Site not responding. Last check: 2007-10-14)
Note that the algorithm for executing the LR parser (and the LALR parser) is the same as the algorithm for executing the SLR parser.
The algorithm we discussed for constructing an LALR parser is based on the LR parser algorithms:
The examples for an LALR parser were the same ones we used for the LR parser:
www.mcs.drexel.edu /~rweaver/COURSES/MCS761/TOPICS/lrp.html   (260 words)

  
 Digital Mars - D - D grammar?
LALR is a lookahead LR LL parsers have problems with e ::= e + t; so you have to rewrite your
JavaCC was LL(n) and Antlr is either LL(n) or LALR
I don't fancy trying to port Bison to D. Antlr also allows tree walkers to be defined which is very useful (LALR and
www.digitalmars.com /d/archives/15038.html   (4265 words)

  
 : Index   (Site not responding. Last check: 2007-10-14)
A class that represents a communication node, which can be a process, input device, or output device.
A class that performs greedy connection scheduling for a given placement and machine model.
Determine if a character is ok for the middle of an id.
cag.lcs.mit.edu /~elliotw/sift/index-all.html   (2538 words)

  
 Companies - Specializing - Lalr Software   (Site not responding. Last check: 2007-10-14)
YACC and Lex for Windows, featuring: project management, project rebuilding, editor with YACC and...
Specializes in: dbcs, bumble bee software, windows, parser, byacc, unicode, lexical analyser, flex, bumble bee software ltd, bison, yacc, java, pargen, lalr, mbcs, alex, parser generator, ayacc
Specializes in: dbcs, windows, bumble bee software, parser, byacc, unicode, lexical analyser, flex, bison, yacc, java, pargen, lalr, mbcs, alex, parser generator, ayacc
www.soft411.org /companies/lalr.html   (174 words)

  
 Topic: lang/lisp/code/parsing/   (Site not responding. Last check: 2007-10-14)
lang/lisp/code/parsing/ lalr/ LALR: A LALR(1) parser-generator for Lisp.
The emphasis is more on code-related parsing, such as LALR parsers, than on natural language parsing.
Last Web update on Mon Feb 13 10:30:39 1995
www-cgi.cs.cmu.edu /afs/cs/project/ai-repository/ai/lang/lisp/code/parsing/0.html   (91 words)

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