LEPL 2.0 (Default branch)


 
Thread Tools Search this Thread
Special Forums News, Links, Events and Announcements Software Releases - RSS News LEPL 2.0 (Default branch)
# 1  
Old 03-05-2009
LEPL 2.0 (Default branch)

LEPL is a recursive descent parser library writtenin Python. It is based on parser combinatorlibraries popular in functional programming, butalso exploits Python language features. Operatorsprovide a friendly syntax, and the consistent useof generators supports full backtracking andresource management. Backtracking implies that awide variety of grammars are supported, but onlyLL(k) are guaranteed to terminate.License: GNU Lesser General Public License (LGPL)Changes:
This release introduces several new features while keeping the same basic syntax for grammars (expressed as Python code). These include: evaluation via trampolining, which avoids any limits on recursion due to the small Python stack; memoisation, allowing both packrat parsing (Norvig 1991) and left-recursive grammars (Frost and Hafiz 2006); matcher graph rewriting, allowing manipulation of the grammar before parsing starts.Image

Image

More...
Login or Register to Ask a Question

Previous Thread | Next Thread
Login or Register to Ask a Question
XML_PARSER_SET_OPTION(3)						 1						  XML_PARSER_SET_OPTION(3)

xml_parser_set_option - Set options in an XML parser

SYNOPSIS
bool xml_parser_set_option (resource $parser, int $option, mixed $value) DESCRIPTION
Sets an option in an XML parser. PARAMETERS
o $parser - A reference to the XML parser to set an option in. o $option - Which option to set. See below. The following options are available: XML parser options +---------------------------+--------------------------------------+---+ | Option constant | | | | | | | | | Data type | | | | | | | | Description | | | | | | +---------------------------+--------------------------------------+---+ | | | | | XML_OPTION_CASE_FOLDING | | | | | | | | | integer | | | | | | | | Controls whether case-folding is | | | | enabled for this XML parser. Enabled | | | | by default. | | | | | | | | | | | XML_OPTION_SKIP_TAGSTART | | | | | | | | | integer | | | | | | | | Specify how many characters should | | | | be skipped in the beginning of a tag | | | | name. | | | | | | | | | | | XML_OPTION_SKIP_WHITE | | | | | | | | | integer | | | | | | | | Whether to skip values consisting | | | | of whitespace characters. | | | | | | | | | | |XML_OPTION_TARGET_ENCODING | | | | | | | | | string | | | | | | | | Sets which target encoding to use | | | | in this XML parser.By default, it is | | | | set to the same as the source encod- | | | | ing used by xml_parser_create(3). | | | | Supported target encodings are | | | | ISO-8859-1, US-ASCII and UTF-8. | | | | | | +---------------------------+--------------------------------------+---+ o $value - The option's new value. RETURN VALUES
This function returns FALSE if $parser does not refer to a valid parser, or if the option could not be set. Else the option is set and TRUE is returned. PHP Documentation Group XML_PARSER_SET_OPTION(3)