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Topic: Parsing table


In the News (Thu 17 Dec 09)

  
 LR parser - Wikipedia, the free encyclopedia
Depending on how the parsing table is generated these parsers are called Simple LR parser (SLR), Look-ahead LR parser (LALR), and Canonical LR parser.
The goto table is indexed by a state of the parser and a nonterminal and simply indicates what the next state of the parser will be if it has recognized a certain nonterminal.
The transition table of this automaton is defined by the shift actions in the action table and the goto actions in the goto table.
en.wikipedia.org /wiki/LR(0)_parser   (2533 words)

  
 PCYDB Manual
The parsing table is generated from the context-free grammar of a language by a parser generator.
The parsing table is the key component of a LR parser because it determines the characteristics of the parser.
It is essentially the transition table of a deterministic finite automaton whose input symbols are the terminals and nonterminals of the grammar.
www.abxsoft.com /pcydb.html   (5866 words)

  
 LL parser - Wikipedia, the free encyclopedia
If such a parser exists for a certain grammar and it can parse sentences of this grammar without backtracking then it is called an LL(k) grammar.
If the table contains at most one rule in every one of its cells, then the parser will always know which rule it has to use and can therefore parse strings without backtracking.
Until the mid 1990s, it was widely believed that LL(k) parsing (for k > 1) is impractical, since the size of the parse table would (in general, in the worst case) have to have exponential complexity in k.
en.wikipedia.org /?title=LL_parser   (1341 words)

  
 Adding HTML Table Support   (Site not responding. Last check: 2007-10-20)
Tables are realized by special formatting commands in the HTML code, and allow display of text in tabular form, complete with user-specified rows and columns.
TABLE - This tag is the high-level container for the rest of the table elements; it declares the beginning of a table.
Parsing and lexical analysis code exists already for a number of HTML elements, so implementing these additions merely requires adding the new tags to the element tables and adding small blocks of code that identify the tags, check their usage, and add them to the HTML data stream appropriately.
www.cc.gatech.edu /classes/cs8113d_96_winter/project/change3.html   (1419 words)

  
 Bottom-Up and LR Parsing   (Site not responding. Last check: 2007-10-20)
Shift-reduce parsing will lead us to the study of LR parsing, which is the primary parsing method for many compilers, mainly because of it's speed and that tools exist to automatically generate a parser based on the grammar.
One important fact to keep in mind when constructing LR parsing tables is that the state on the top of the stack provides a wealth of information to the parser.
Table: An example parse using the parsing table and the LR parsing algorithm.
www.csd.uwo.ca /~wozniak/cs447a-fall2001/notes/06_-_bottom-up-LR   (1666 words)

  
 TIME - parsing dates and times.
A date/time parsing table is represented as a vector of structures; in the C programming language, these structures are declared to have the type "_T_parse", a type defined in .
The last entry in a date/time parsing table should be a _T_parse structure with a NULL pointer in its "str" field.
Your date/time parsing table should be declared as an array of _T_parse structures ending in a structure with a NULL "str" as described above.
www.thinkage.on.ca /english/gcos/expl/b/time.html   (1227 words)

  
 Parsing   (Site not responding. Last check: 2007-10-20)
A parser is an algorithm that determines whether a given input string is in a language and, as a side-effect, usually produces a parse tree for the input.
Recursive-descent parsing is one of the simplest parsing techniques that is used in practice.
Since recursive-descent parsing uses an implicit stack of procedure calls, it is possible to replace the parsing procedures and implicit stack with an explicit stack and a single parsing procedure that manipulates the stack.
www.cs.rochester.edu /users/faculty/leblanc/csc173/grammars/parsing.html   (1765 words)

  
 ORBit-0.5.17(1)
The final structure in the table should have all the pointer values set to NULL and all the arithmetic values set to 0, marking the end of the table.
Including other option tables allows a library to provide a standard set of command-line options to every program which uses it (this is often done in graphical programming toolkits, for example).
This is especially usefull when included option tables are being used, as the program which provides the top-level option table doesn't need to be aware of the other options which are provided by the included table.
hpux.connect.org.uk /hppd/hpux/Gnome/ORBit-0.5.17/man.html   (3227 words)

  
 String Parsing, Table Functions and OWB10gR1
Table functions are particularly useful for ETL work as they can optionally take a REF CURSOR as input, meaning that you can pass the results of a SELECT statement to it as input, it then processes it and spits out another table of data as output.
So, the first thing to do then is to define a record type, then a table type based on this record type, for my function to use as it's output datatype.
We've used a table function to parse some comma delimited strings, and embedded it in an OWB mapping to make it a bit more manageable.
www.dba-oracle.com /oracle_news/2006_03_01_String_Parsing_Table_Functions_and_OWB10gR1.htm   (981 words)

  
 Shift/Reduce Expression Parsing   (Site not responding. Last check: 2007-10-20)
The Sugar expression parser is similar to the class of operator-precedence parsers, but has been extended to support common requirements when parsing expressions, such as function application, confix (grouping) operators, and operator name disambiguation.
The confix and function application operators are essentially split into their component parts, an open symbol and a close symbol, during the parsing phase.
Otherwise, the following table determines the action of the parser depending on the type of the operator on top of the operator stack and on the type of the current operator token.
www.cs.rpi.edu /~gregod/Sugar/doc/design.html   (742 words)

  
 [No title]
We have decided to first generate the Parsing table and then using this table, parse the given input string.
Parsing an input string id * id + id On input id * id + id, the stack and input contents are 0 and the input string concatenated with $ respectively.
From the parsing table, get the value of 0F which is 3 and push this number on to the stack.
www.calstatela.edu /faculty/jmiller6/cs488-spring2003/notes/Notes4-2.doc   (703 words)

  
 Glossary of Parsing Terms
In a traditional parsing engine there are four actions: the shift action, the reduce action, the accept action, and the error action.
Normally when you are parsing a file, this is inconsequential because you are not going to continue performing semantic actions in the presence of errors.
As a parse progresses, token values are shifted onto the stack, so that in a reduction procedure, the values of the tokens that comprise the grammar rule that is being reduced are available for inspection.
www.parsifalsoft.com /gloss.html   (7372 words)

  
 Tirgul #9
As oppose to top-down parsers we construct the parse tree from the leaves, specificly, the leftmost node that was not constructed yet, but all of its children have been constructed, the sequence of children (or right hand side of a rule) is a handle, constructing a node N and connecting children is called reducing.
At the start of the parsing process, the parser is in the state 1 with the first symbol in the input stream as the input table.
Each parsing step will be driven by the table entry identified by the current state and the input symbol.
www.cs.bgu.ac.il /~yoval/comp031/tirgul9.html   (1089 words)

  
 PARSER - parsing routines in the C utility library.
The parsing routines of the C utility library help you parse command lines and input whose structure is comparable to command lines.
Entries in the table are indexed with integers, beginning with zero for the first entry.
To determine whether the option described by Entry 2 was actually present in a parsed command line, you would use an appropriate parsing routine to query Entry 2 of the parsing table.
www.thinkage.on.ca /english/gcos/expl/c/inte/pars/expl.html   (717 words)

  
 GNU Emacs Lisp Reference Manual: Syntax Tables   (Site not responding. Last check: 2007-10-20)
Here is a table of syntax classes, the characters that stand for them, their meanings, and examples of their use.
If the property value is a syntax table, that table is used instead of the current buffer's syntax table to determine the syntax for this occurrence of the character.
The syntax table controls the interpretation of characters, so these functions can be used for Lisp expressions when in Lisp mode and for C expressions when in C mode.
www.ualberta.ca /~neitsch/sunsite.ualberta.ca/Mirror/gnu/Manuals/elisp-manual-21-2.8/html_chapter/elisp_35.html   (3683 words)

  
 Natural Language Processing with ThoughtTreasure: Learning in ThoughtTreasure
Tables are also terminated by separator lines or when all the bits in the first 40 characters of the bitmap would become set if the next line were to be included.
A table parse node is added containing the character position ranges of the sensed fields, and the beginning and ending positions of the table in the input text.
Parsing is accomplished as follows: A vertical slice corresponding to each table field is stripped out of the input text.
www.signiform.com /tt/book/Learn.html   (4587 words)

  
 SMBIOS Library: Smbios Table Overview
This is for efficiency reasons, as the table has a max length of 64k, and each access of the table potentially has to do special OS calls to re-read the data.
The inheritance heirarchy is based around the concept that, no matter which OS or platform you are running on, the actual table data and parsing is going to be exactly the same.
Next, xml parsing implies an additional runtime dependency on xerces, which is the xml library we use to parse xml.
linux.dell.com /files/libsmbios/main/smbios_theory.html   (926 words)

  
 [No title]
USE OF PARSING TABLES More formally, we can attach a state to the root of each tree stored on the stack.
The set Q of states and the goto table is constructed as follows: 1.
Finally, the parsing action table entries for each state q in Q are constructed as follows: 1.
www.cit.gu.edu.au /teaching/3136CIT/Lectures/lec4.txt   (1017 words)

  
 IEBlog : Table Rendering   (Site not responding. Last check: 2007-10-20)
There is actually a solution that should improve the performance of browsers whichever table parsing algorithm they use and that is for web developers to make use of the table-layout attribute in CSS.
Tables have been used to position content on a page for many years but the truth is that they were never originally intended for that purpose.
Positioning of complex data in a tabular format is different from the use of tables we often see where tables are being used to align and position content that is not tabular in nature.
blogs.msdn.com /ie/archive/2005/02/10/370721.aspx   (7206 words)

  
 [No title]
This is most often useful for mutually-exclusive arguments in cases where it is not an error for multiple arguments to occur and where you want the last argument specified to win; for example, "rm -i -f".
If it is 0, the parsing function does not return a value, instead parsing the next command-line argument.
After finding the next argument in the option table, the function fills in the object pointed to by the option.RI "table entry's " arg.RB "pointer if it is not " NULL ".
web.mit.edu /SOURCE/third/ORBit/popt/popt.3   (3280 words)

  
 Ensure DB populated before parsing table :: Visual Basic Web Magazine Forums
After the call has been made to download the data, a function is called that parses the new data from the table into a text file.
The problem is that there is a short delay in the data appearing in the table, so when the function attempts to parse the table there is nothing there.
Waiting for a while and calling the parse function by itself, it works perfectly, (but the whole process needs to be automated).
www.vbwm.com /forums/topic.asp?TOPIC_ID=3174   (492 words)

  
 CSCI 4627, Spring 2005
The basis for predictive parsing is a predictive parsing table.
Unfortunately, you cannot implement a recursive descent parser until you have created the parsing table, and you cannot define what an LL(1) grammar is until you have a definition of the parsing table.
We defined an LL(1) grammar, which is a grammar that has at most one entry per slot in the predictive parsing table.
www.cs.ecu.edu /~karl/4627/spr05   (982 words)

  
 [No title]
The PDA in that proof is an idealized and abstract model of top-down parsing in general.
The more information the parser uses in making parsing decisions, the larger the family of grammars that can be parsed deterministically, and, in some cases, the larger the family of languages defined by those grammars.
The parsing table and rule table are reproduced for convenience.
longwood.cs.ucf.edu /~workman/cot5310/Notes-SecH1.doc   (2917 words)

  
 250 notes RTF   (Site not responding. Last check: 2007-10-20)
Each entry in the symbol table is for the declaration of an identifier.
The symbol table is updated if the identifier is new or if there is new information about the indentifier.
The parse table should be similar to the table found on page 134.
www.ecst.csuchico.edu /~osm/250.notes.html   (4983 words)

  
 Quick Review of LR(k) and LALR(k) Parsing Theory
An item with nothing after the dot indicates a reduction by a production is OK at this stage, but an item with a symbol after the dot indicates we should shift more symbols before making any reductions.
Then, starting from a state consisting of a parse stack on the left, and an input stack on the right of remaining tokens to be parsed,
There are no reduce/reduce conflicts, and the parse tables become much smaller.
www.seanerikoconnor.freeservers.com /ComputerScience/Compiler/ParserGeneratorAndParser/QuickReviewOfLRandLALRParsingTheory.html   (1633 words)

  
 Tablin: an HTML Table linearizer   (Site not responding. Last check: 2007-10-20)
HTML Tables, whether used for layout or for real data, can create problems for people reading the Web line-by-line (e.g.
This usually happens when there is a mismatch between the rendering engine parsing the Table and the needs of the presentation engine interacting with the end-user.
WAI Evaluation and Repair (ER) group that can linearize HTML tables and render them accordingly to preferences set by the presentation layer (e.g.
www.w3.org /WAI/Resources/Tablin   (250 words)

  
 POPT(3 ) Manual Page   (Site not responding. Last check: 2007-10-20)
It is found superior in many ways when compared to parsing the argv array by hand or using the getopt functions getopt() and getopt_long() [see getopt(3)].
Each member of the table defines a single option that may be passed to the program.
Although popt is usually used for parsing arguments already divided into an argv-style array, some programs need to parse strings that are formatted identically to command lines.
h30097.www3.hp.com /demos/ossc/man-html/man3/popt.3.html   (2870 words)

  
 Diary for nymia
The idea that seem to jump at me was the static nature of the parsing table.
I tried several paper-and-pencil experiments on which the parser table can be modified, nothing came out of it though.
Even though it is very comfortable to state that the staticness and rigidness of the LR parser table is inherently good in terms of security and maintainability.
www.advogato.org /person/nymia/diary.html?start=441   (1381 words)

  
 [No title]
Advantages of LR parsing: LR parsers can recognize almost all programming language constructs expressed in context-free grammars.
The state at the top of the stack and the current input symbol are used to index the parsing table and decide what to do.¡$úúóŸª Ÿ¨The parsing table has two parts: action table and goto table.
There are two kinds of operations in the parsing: shift or reduce.
www.cs.fsu.edu /~xyuan/cot5300/lecture10.ppt   (271 words)

  
 Designing a Parser using a LR parsing table - Dev Shed   (Site not responding. Last check: 2007-10-20)
Discuss Designing a Parser using a LR parsing table in the Java Help forum on Dev Shed.
Designing a Parser using a LR parsing table Java Help forum discussing all Java platforms - J2ME, J2SE and J2EE - as well as relevant standards, APIs and frameworks such as Swing, Servlets, JSPs, Applets, Struts, Spring, Hibernate, ANT, EJB, and other Java-related topics.
I have already built a scanner and now need to design a parser using a LR parsing table.
forums.devshed.com /java-help-9/designing-a-parser-using-a-lr-parsing-table-94099.html   (232 words)

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