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	LR parser - Wikipedia, the free encyclopedia
		LR parsers read their input from Left to right and produce a Rightmost derivation (hence LR, compare with LL parser).
		Of all parsers that scan their input left to right, LR parsers detect syntactic errors (that is, when the input does not conform to the grammar) as soon as possible.
		LR parsers are difficult to produce by hand; they are usually constructed by a parser generator or a compiler-compiler.
	en.wikipedia.org /wiki/LR_parser (2523 words)

	Simple LR parser - Wikipedia, the free encyclopedia
		Such a parser can prevent certain shift-reduce and reduce-reduce conflicts (see LR parser) that occur in LR(0) parsers and it can therefore deal with more grammars.
		However, it still cannot parse all grammars that can be parsed by an LR(1) parser.
		A grammar that can be parsed by an SLR parser is called a SLR grammar.
	en.wikipedia.org /wiki/Simple_LR_parser (179 words)

	[No title]
		LR parser generators are simple and powerful, but they are not tailored toward providing good error messages.
		LR parsing uses a finite automaton plus a stack during parsing as it reads one token at a time from the input.
		Although Merr generates error messages for conventional LR parsers with minimal error recovery mechanisms, more powerful error recovery mechanisms are related in that they can present the repaired program in the error message, as a suggestion as to how the programmer may correct their program [Conway].
	www.cs.nmsu.edu /~jeffery/merr.html (3415 words)

	: Class lr_parser
		In general, LR parsers are a form of bottom up shift-reduce parsers.
		When the parser shifts, it changes to a new state by pushing a new Symbol (containing a new state) onto the stack.
		This table is indexed by state and terminal number indicating what action is to be taken when the parser is in the given state (i.e., the given state is on top of the stack) and the given terminal is next on the input.
	www.ii.uib.no /~olev/java/java_cup/runtime/lr_parser.html (2598 words)

	compilers.net > directory > parser generators
		Whenever a btyacc generated parser runs into a shift-reduce or reduce-reduce error in the parse table, it remembers the current parse point (yacc stack and input stream state), and goes into trial parse mode.
		Happy is a parser generator system for Haskell, similar to the tool `yacc' for C. Like `yacc', it takes a file containing an annotated BNF specification of a grammar and produces a Haskell module containing a parser for the grammar.
		Parser objects are composed through operator overloading and the result is a backtracking LL(inf) parser that is capable of parsing rather ambiguous grammars.
	www.compilers.net /Dir/ParserGens.htm (1124 words)

	[No title]
		During the tree walk, this operator is compared with the operator of the parent expression, and parentheses are inserted based on the precedence, associativity, and fixity (infix, prefix, or postfix) of the two operators.
		The parser handles juxtaposition by inserting an implicit ``juxtaposition operator'' whenever two expressions are juxtaposed in the input.
		When the input is exhausted, the parser reduces first the prefixes, then the stack, until it reaches the result.
	www.eecs.harvard.edu /~nr/toolkit/working/sml/WWW/unparse.html (8134 words)

	[No title]
		An alternative approach to unparsing might begin with a parser and attempt to derive an unparser using the program-transformation techniques known as \emph{program inversion}.\cite{gries:science,chen:inversion,von-wright:inversion}\label{corr:inversion} If successful, this attempt would produce an unparser that would be correct by construction, but it would look substantially different from the one presented here.
		Appendix~\ref{parser} of this paper presents the inverse of the general unparser, i.e., a parser that handles prefix and postfix as well as infix operators, all of dynamically chosen precedence and associativity.
		Otherwise, the parser's behavior depends on the fixity of [[irator]]; it may reduce [[irator]], shift it, or insert [[juxtarator]].
	www.eecs.harvard.edu /~nr/toolkit/working/sml/unparse.nw (9140 words)

	Simple LR parser -- Facts, Info, and Encyclopedia article (Site not responding. Last check: 2007-08-08)
		Simple LR parser -- Facts, Info, and Encyclopedia article
		Such a (A computer program that divides code up into functional components) parser can prevent certain shift-reduce and reduce-reduce conflicts (see (Click link for more info and facts about LR parser) LR parser) that occur in LR(0) parsers and it can therefore deal with more grammars.
		However, it still cannot parse all grammars that can be parsed by an (Click link for more info and facts about LR(1) parser) LR(1) parser.
	www.absoluteastronomy.com /encyclopedia/s/si/simple_lr_parser1.htm (181 words)

	Open Directory - Computers: Programming: Compilers: Lexer and Parser Generators (Site not responding. Last check: 2007-08-08)
		IParse - An interpretting parser, meaning that it accept on the input a grammar and a source file which should be parsed according to that grammar, and produces an abstract program tree from this.
		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.
		Toy Parser Generator for Python - TPG is a parser generator for Python.
	dmoz.org /Computers/Programming/Compilers/Lexer_and_Parser_Generators (1715 words)

	SLR Parsing (Site not responding. Last check: 2007-08-08)
		A simple LR (or SLR) parser has an input, a stack, and a parsing table.
		DEFN: A configuration of an LR parser is an ordered pair whose first component is the current stack and whose second component is the remaining input:
		Note that the parser popped r state symbols and r grammar symbols off the top of the stack.
	www.cs.wm.edu /~noonan/cs442/syllabus/lr/slr.html (199 words)

	Tomita's Parser (Site not responding. Last check: 2007-08-08)
		Tomita's Algorithm amounts to a simple generalisation of the standard LR algorithm.
		The LR parse-table is constructed as usual, and we proceed with the parsing algorithm in the normal way.
		In general the effectiveness of this algorithm is proportional to the ``strength'' of the initial parse table; e.g.
	www.cs.may.ie /~jpower/Courses/parsing/node69.html (187 words)

	Tools and Hardware: Best Table Saws
		LR parsing has many benefits: Virtually all programming languages can...
		to produce by hand; they are usually constructed by a parser generator or a compiler-compiler.
		Depending on how the parsing table is generated these parsers are called Simple LR parser (SLR for short), Look-ahead LR parser (LALR), and Canonical LR...
	www.showatoolusa.com /40.html (1160 words)

	Geneseo CSci 331 Implementing LR Parsers 1 (Site not responding. Last check: 2007-08-08)
		Observation 2: All LR parsers work in the same basic manner, i.e.,
		But each LR parser differs in the contents of its parse tables, and in details of reductions (since they depend on the grammar the parser parses)
		So want to separate the general features of LR parsers from the language-specific features of specific ones, so the general features can be reused:
	www.cs.geneseo.edu /~baldwin/csci331/spring2002/lrimpl0311.html (139 words)

	Self paper: "Mango - A Parser Generator for Self" (Site not responding. Last check: 2007-08-08)
		Fourth, Mango and the parsers it generates are completely integrated in the Self object world.
		We show how to generate a Mango parser and how to use it by means of an example: a simple expression language.
		A parser for full ANSI C was built with Mango.
	www.cs.ucsb.edu /labs/oocsb/self/papers/mango.html (203 words)

	[No title] (Site not responding. Last check: 2007-08-08)
		A simple LR(0) parser We fix an augmented grammar G' with start state S' which appears only in the production S' -> S. An _LR(0)_item_ is any expression of the form [A -> alpha.
		Every state is the closure of its kernel items, so only the kernel items need be stored to specify the state, and two states are equal iff their kernel items are equal.
		We build states for the parser as we built states for the DFA, i.e., states reachable from the start state via transitions: states(G): form augmented grammar G' C := { s_0 } // the start state while there is a state s in C and a grammar symbol X s.t.
	www.cse.sc.edu /~fenner/csce531/course-notes (2540 words)

	Elkhound Overview
		The parsers it generates use the Generalized LR (GLR) parsing algorithm.
		The parser generator creates the tables, then emittables.cc renders the tables out as code for use by the parser during parsing.
		This parser could be evolved into something useful in its own right, but at this time it's mostly just a test of Elkhound's deterministic parser.
	www.cs.berkeley.edu /~smcpeak/elkhound/sources/elkhound (756 words)

	A Generalized Lr Parser For Text-To-Speech Synthesis (ResearchIndex) (Site not responding. Last check: 2007-08-08)
		Abstract: The development of a parser for a Norwegian text-to-speech system is reported.
		The Generalized Left Right (GLR) algorithm [1] is applied, which is a generalization of the well known LR algorithm for parsing computer languages.
		This paper describes briefly the GLR algorithm, the integration of a probabilistic scoring model, our implementation of the parser in C++, attribute structures, lexical interface, and the application of the parser to part-of-speech (POS) tagging for Norwegian.
	citeseer.ist.psu.edu /505238.html (324 words)

	Geneseo CSci 331 Sample Exam 1 (Site not responding. Last check: 2007-08-08)
		Show, as sets of LR(0) items, the states for a simple LR parser for this grammar.
		Here are some snapshots of the stack and input at various times during the parse, showing the first few handles that the parser reduces (the handles are the underlined parts of the stack; “e” denotes an empty string, which can be a handle for the third production):
		Complete this list, so that it shows every handle the parser reduces, in the order the parser recognizes the handles.
	www.cs.geneseo.edu /~baldwin/csci331/spring2003/sampleexam1.html (329 words)

	Comp.compilers: Semantic actions in LR parser
		Re: Semantic actions in LR parser roy@prism.gatech.edu (1993-04-02)
		Re: Semantic actions in LR parser karsten@tfl.dk (1993-04-03)
		If you model it right, it is fairly simple.
	compilers.iecc.com /comparch/article/93-04-029 (316 words)

	parser
		A LR parser generator, based on Aho and al.
		You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
		Class for LR parser: without shelve and semantic rules(obsolete)
	www.ncc.up.pt /fado/Yappy/api/private/parser-module.html (263 words)

	Lecture 12: February 28, 2005
		Note that an LR parser is a shift-reduce parser that traces out a rightmost derivation in reverse.
		Example: the LR parsing table above is an SLR(1) parsing table for the balanced-parentheses grammar.
		A viable prefix is a prefix of a right sentential form that does not continue past the right end of the rightmost handle of that sentential form.
	www.cs.columbia.edu /~aho/cs4115/lectures/05-02-28.html (581 words)

	[No title] (Site not responding. Last check: 2007-08-08)
		yacc [ -vd ] grammar DESCRIPTION Yacc converts a context-free grammar into a set of tables for a simple automaton which executes an LR(1) parsing algorithm.
		The grammar may be ambiguous; specified prece- dence rules are used to break ambiguities.
		FILES y.output y.tab.c y.tab.h defines for token names yacc.tmp, yacc.acts temporary files /usr/lib/yaccpar parser prototype for C programs /lib/liby.a library with default `main' and `yyer- ror' SEE ALSO lex(1) LR Parsing by A. Aho and S. Johnson, Computing Sur- veys, June, 1974.
	avmp01.mppmu.mpg.de /unix_man_pages/yacc.html (211 words)

	Comp.compilers: Re: A big easy subset of the CFGs
		>try to have a parser which recovers gracefully from single-character
		translator writers, I need to provide a simple and consistent model of
		>parser are more subtle than in a simple LR parser.
	compilers.iecc.com /comparch/article/98-06-133 (496 words)

	agile parsing - OneLook Dictionary Search (Site not responding. Last check: 2007-08-08)
		You can look up the words in the phrase individually using these links: agile parsing
		Reverse dictionary results: parse, simple_lr_parser, xerces, canonical_lr_parser, earley_parser, parser, more...
		You might try using the wildcards * and ?
	www.onelook.com /cgi-bin/cgiwrap/bware/dofind.cgi?word=agile+parsing (87 words)

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