Module: Arrow::Template::Parser::Patterns

Included in:

ExportDirective, ForDirective, ImportDirective, IncludeDirective, Arrow::Template::Parser, State, RenderDirective, SelectListDirective, YieldDirective

Defined in:

lib/arrow/template/parser.rb

Overview

Regexp constants for parsing

Constant Summary

TAGOPEN =

The Regexp that is used to match directive tag openings. Must be at least 2 characters wide.

%r{([<|\[])\?}

TAGMIDDLE =

The Hash that maps tag-closings to tag-middle patterns.

Hash.new {|hsh, key|
	# Extract the first and second characters from the tag-closing
	# pattern to build the tag-middle pattern.
	src = key.is_a?( Regexp ) ? key.source : key.to_s
	mobj = /(\\.|.)(\\.|.)/.match( src ) or
		raise Arrow::ParseError, "couldn't extract first and second "\
		"char from closing tag '%s'" % key
	char1, char2 = mobj[1,2]
	hsh[key] = Regexp.new( /((?:[^#{char1}]|#{char1}(?!#{char2}))+)/ )
}

TAGCLOSE =

The Hash that maps tag openings to matching tag closings with flipped braces.

Hash.new {|hsh, key| 
	compliment = key.reverse.tr('<{([', '>})]')
	hsh[key] = Regexp.new( Regexp.quote(compliment) )
}

CAPTURE =

Paren-group map

Hash.new {|hsh, key|
	Regexp.new( '(' + key.to_s + ')' )
}

ALTERNATION =

Hash.new {|hsh, *keys|
	Regexp.new( '(?:' + keys.join('|') + ')' )
}

DOT =

Constant patterns for parsing

/\./

COMMA =

/,/

WHITESPACE =

/\s*/

EQUALS =

/=/

INFIX =

/\.|::|(?>\[)/

IDENTIFIER =

/[a-z]\w*/i

LBRACKET =

/[\[(]/

RBRACKET =

Hash.new {|hsh, key|
	compliment = key.tr( '<{([', '>})]' )
	hsh[key] = Regexp.new( Regexp.quote(compliment) )
}

NUMBER =

/[-+]?\d+(?:\.\d+)?(?:e-?\d+)?/

TICKQSTRING =

:FIXME: I would do this with something like /([“‘/])((?:[^1]|\.)*)1/, but Ruby apparently doesn’t grok backreferences inside character classes: (ruby 1.8.1 (2003-10-25) [i686-linux]) irb(main):001:0> /([”‘])((?:[^1]|\.)*)1/.match( \

 %{foo "and \"bar\" and baz" and some "other stuff"} )[0]
==> "\"and \"bar\" and baz\" and some \"other stuff\""

/'((?:[^']|\\')*)'/

DBLQSTRING =

/"((?:[^"]|\\")*)"/

SLASHQSTRING =

%r{/((?:[^/]|\\/)*)/}

QUOTEDSTRING =

SYMBOL =

VARIABLE =

/(?:\$|@@?)?_?/ + IDENTIFIER

REGEXP =

%r{/((?:[^/]|\\.)+)/}

REBINDOP =

/\s*(?:=~|matches)(?=\s)/

PATHNAME =

%r{((?:[-\w.,:+@#$\%\(\)/]|\\ |\?(?!>))+)}

ARGUMENT =

/[*&]?/ + IDENTIFIER

ARGDEFAULT =