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View File Name : cdesc-StringScanner.ri

U:RDoc::NormalClass[iI"StringScanner:ET@I"Object;To:RDoc::Markup::Document:@parts[o;;[&o:RDoc::Markup::Paragraph;[I"RStringScanner provides for lexical scanning operations on a String.  Here is ;TI"an example of its usage:;To:RDoc::Markup::BlankLine�o:RDoc::Markup::Verbatim;[I"8s = StringScanner.new('This is an example string')
;TI"%s.eos?               # -> false
;TI"
;TI"&p s.scan(/\w+/)      # -> "This"
;TI"#p s.scan(/\w+/)      # -> nil
;TI"#p s.scan(/\s+/)      # -> " "
;TI"#p s.scan(/\s+/)      # -> nil
;TI"$p s.scan(/\w+/)      # -> "is"
;TI"%s.eos?               # -> false
;TI"
;TI"#p s.scan(/\s+/)      # -> " "
;TI"$p s.scan(/\w+/)      # -> "an"
;TI"#p s.scan(/\s+/)      # -> " "
;TI")p s.scan(/\w+/)      # -> "example"
;TI"#p s.scan(/\s+/)      # -> " "
;TI"(p s.scan(/\w+/)      # -> "string"
;TI"$s.eos?               # -> true
;TI"
;TI"#p s.scan(/\s+/)      # -> nil
;TI"#p s.scan(/\w+/)      # -> nil
;T:@format0o;	;[	I"PScanning a string means remembering the position of a <i>scan pointer</i>, ;TI"Pwhich is just an index.  The point of scanning is to move forward a bit at ;TI"Oa time, so matches are sought after the scan pointer; usually immediately ;TI"after it.;T@o;	;[I"IGiven the string "test string", here are the pertinent scan pointer ;TI"positions:;T@o;;[I"  t e s t   s t r i n g
;TI"0 1 2 ...             1
;TI"                      0
;T;0o;	;[I"OWhen you #scan for a pattern (a regular expression), the match must occur ;TI"Pat the character after the scan pointer.  If you use #scan_until, then the ;TI"Omatch can occur anywhere after the scan pointer.  In both cases, the scan ;TI"Ppointer moves <i>just beyond</i> the last character of the match, ready to ;TI"Nscan again from the next character onwards.  This is demonstrated by the ;TI"example above.;T@S:RDoc::Markup::Heading:
leveli:	textI"Method Categories;T@o;	;[	I"PThere are other methods besides the plain scanners.  You can look ahead in ;TI"Rthe string without actually scanning.  You can access the most recent match. ;TI"NYou can modify the string being scanned, reset or terminate the scanner, ;TI"Pfind out or change the position of the scan pointer, skip ahead, and so on.;T@S;
;i;I"Advancing the Scan Pointer;T@o:RDoc::Markup::List:
@type:BULLET:@items[o:RDoc::Markup::ListItem:@label0;[o;	;[I"#getch;To;;0;[o;	;[I"#get_byte;To;;0;[o;	;[I"
#scan;To;;0;[o;	;[I"#scan_until;To;;0;[o;	;[I"
#skip;To;;0;[o;	;[I"#skip_until;T@S;
;i;I"Looking Ahead;T@o;;;;[
o;;0;[o;	;[I"#check;To;;0;[o;	;[I"#check_until;To;;0;[o;	;[I"#exist?;To;;0;[o;	;[I"#match?;To;;0;[o;	;[I"
#peek;T@S;
;i;I"Finding Where we Are;T@o;;;;[
o;;0;[o;	;[I" #beginning_of_line? (#bol?);To;;0;[o;	;[I"
#eos?;To;;0;[o;	;[I"#rest?;To;;0;[o;	;[I"#rest_size;To;;0;[o;	;[I"	#pos;T@S;
;i;I"Setting Where we Are;T@o;;;;[o;;0;[o;	;[I"#reset;To;;0;[o;	;[I"#terminate;To;;0;[o;	;[I"
#pos=;T@S;
;i;I"Match Data;T@o;;;;[o;;0;[o;	;[I"
#matched;To;;0;[o;	;[I"#matched?;To;;0;[o;	;[I"#matched_size;To;;0;[o;;:
LABEL;[o;;[I"�;T;[@o;;0;[o;	;[I"#pre_match;To;;0;[o;	;[I"#post_match;T@S;
;i;I"Miscellaneous;T@o;;;;[
o;;0;[o;	;[I"<<;To;;0;[o;	;[I"#concat;To;;0;[o;	;[I"#string;To;;0;[o;	;[I"
#string=;To;;0;[o;	;[I"#unscan;T@o;	;[I"1There are aliases to several of the methods.;T:
@fileI"ext/strscan/strscan.c;T:0@omit_headings_from_table_of_contents_below0;0;0[�[�[�[[I"
class;T[[:public[[I"must_C_version;TI"ext/strscan/strscan.c;T[I"new;T@[:protected[�[:private[�[I"
instance;T[[;[3[I"<<;T@[I"[];T@[I"beginning_of_line?;T@[I"
captures;T@[I"charpos;T@[I"
check;T@[I"check_until;T@[I"
clear;T@[I"concat;T@[I"empty?;T@[I"	eos?;T@[I"exist?;T@[I"fixed_anchor?;T@[I"
get_byte;T@[I"getbyte;T@[I"
getch;T@[I"inspect;T@[I"match?;T@[I"matched;T@[I"
matched?;T@[I"matched_size;T@[I"	peek;T@[I"	peep;T@[I"pointer;T@[I"
pointer=;T@[I"pos;T@[I"	pos=;T@[I"post_match;T@[I"pre_match;T@[I"
reset;T@[I"	rest;T@[I"
rest?;T@[I"rest_size;T@[I"
restsize;T@[I"	scan;T@[I"scan_full;T@[I"scan_until;T@[I"search_full;T@[I"	size;T@[I"	skip;T@[I"skip_until;T@[I"string;T@[I"string=;T@[I"terminate;T@[I"unscan;T@[I"values_at;T@[;[�[;[[I"initialize_copy;T@[�[U:RDoc::Context::Section[i�0o;;[�;0;0[@�@�cRDoc::TopLevel