scanner.c File Reference

#include <stdio.h>
#include <string.h>
#include "elinks.h"
#include "dom/css/scanner.h"
#include "dom/scanner.h"
#include "dom/string.h"
#include "util/error.h"

Include dependency graph for scanner.c:

Macros
#define	CSS_STRING_MAP(str, type, family)    { STATIC_DOM_STRING(str), CSS_TOKEN_##type, CSS_TOKEN_##family }
#define	check_css_table(c, bit)   (dom_css_scanner_info.scan_table[(unsigned char)(c)] & (bit))
#define	scan_css(scanner, s, bit)    while ((s) < (scanner)->end && check_css_table(*(s), bit)) (s)++;
#define	scan_back_css(scanner, s, bit)    while ((s) >= (scanner)->string && check_css_table(*(s), bit)) (s)--;
#define	is_css_ident_start(c)   check_css_table(c, CSS_CHAR_IDENT_START)
#define	is_css_ident(c)   check_css_table(c, CSS_CHAR_IDENT)
#define	is_css_digit(c)   check_css_table(c, CSS_CHAR_DIGIT)
#define	is_css_hexdigit(c)   check_css_table(c, CSS_CHAR_HEX_DIGIT)
#define	is_css_char_token(c)   check_css_table(c, CSS_CHAR_TOKEN)
#define	is_css_token_start(c)   check_css_table(c, CSS_CHAR_TOKEN_START)
#define	skip_css(scanner, s, skipto)

Enumerations
enum	css_char_group {   CSS_CHAR_ALPHA = (1 << 0) , CSS_CHAR_DIGIT = (1 << 1) , CSS_CHAR_HEX_DIGIT = (1 << 2) , CSS_CHAR_IDENT = (1 << 3) ,   CSS_CHAR_IDENT_START = (1 << 4) , CSS_CHAR_NEWLINE = (1 << 5) , CSS_CHAR_NON_ASCII = (1 << 6) , CSS_CHAR_SGML_MARKUP = (1 << 7) ,   CSS_CHAR_TOKEN = (1 << 8) , CSS_CHAR_TOKEN_START = (1 << 9) , CSS_CHAR_WHITESPACE = (1 << 10) }

Functions
static struct dom_scanner_token *	scan_css_tokens (struct dom_scanner *scanner)
static void	scan_css_token (struct dom_scanner *scanner, struct dom_scanner_token *token)

Variables
static const struct dom_scan_table_info	css_scan_table_info []
static const struct dom_scanner_string_mapping	css_string_mappings []
struct dom_scanner_info	dom_css_scanner_info

Macro Definition Documentation

check_css_table

#define check_css_table	(		c,
			bit
	)		(dom_css_scanner_info.scan_table[(unsigned char)(c)] & (bit))

CSS_STRING_MAP

#define CSS_STRING_MAP	(		str,
			type,
			family
	)		{ STATIC_DOM_STRING(str), CSS_TOKEN_##type, CSS_TOKEN_##family }

is_css_char_token

#define is_css_char_token

(

c

)

check_css_table(c, CSS_CHAR_TOKEN)

is_css_digit

#define is_css_digit

(

c

)

check_css_table(c, CSS_CHAR_DIGIT)

is_css_hexdigit

#define is_css_hexdigit

(

c

)

check_css_table(c, CSS_CHAR_HEX_DIGIT)

is_css_ident

#define is_css_ident

(

c

)

check_css_table(c, CSS_CHAR_IDENT)

is_css_ident_start

#define is_css_ident_start

(

c

)

check_css_table(c, CSS_CHAR_IDENT_START)

is_css_token_start

#define is_css_token_start

(

c

)

check_css_table(c, CSS_CHAR_TOKEN_START)

scan_back_css

#define scan_back_css	(		scanner,
			s,
			bit
	)		while ((s) >= (scanner)->string && check_css_table(*(s), bit)) (s)--;

scan_css

#define scan_css	(		scanner,
			s,
			bit
	)		while ((s) < (scanner)->end && check_css_table(*(s), bit)) (s)++;

skip_css

#define skip_css	(		scanner,
			s,
			skipto
	)

Value:

   while (s < (scanner)->end              \
          && *(s) != (skipto)             \
          && check_css_precedence(*(s), skipto)) {       \
      if (isquote(*(s))) {             \
         int size = (scanner)->end - (s);    \
         char *end = (char *)memchr(s + 1, *(s), size);  \
                           \
         if (end) (s) = end;           \
      }                    \
      (s)++;                     \
   }

Enumeration Type Documentation

css_char_group

enum css_char_group

Enumerator
CSS_CHAR_ALPHA
CSS_CHAR_DIGIT
CSS_CHAR_HEX_DIGIT
CSS_CHAR_IDENT
CSS_CHAR_IDENT_START
CSS_CHAR_NEWLINE
CSS_CHAR_NON_ASCII
CSS_CHAR_SGML_MARKUP
CSS_CHAR_TOKEN
CSS_CHAR_TOKEN_START
CSS_CHAR_WHITESPACE

Function Documentation

scan_css_token()

static void scan_css_token ( struct dom_scanner *  scanner, struct dom_scanner_token *  token  )

inlinestatic

scan_css_tokens()

static struct dom_scanner_token * scan_css_tokens ( struct dom_scanner *  scanner )

static

Variable Documentation

css_scan_table_info

const struct dom_scan_table_info css_scan_table_info[]

static

Initial value:

= {
   DOM_SCAN_TABLE_RANGE("0", '9', CSS_CHAR_DIGIT | CSS_CHAR_HEX_DIGIT | CSS_CHAR_IDENT),
   DOM_SCAN_TABLE_RANGE("A", 'F', CSS_CHAR_HEX_DIGIT),
   DOM_SCAN_TABLE_RANGE("A", 'Z', CSS_CHAR_ALPHA | CSS_CHAR_IDENT | CSS_CHAR_IDENT_START),
   DOM_SCAN_TABLE_RANGE("a", 'f', CSS_CHAR_HEX_DIGIT),
   DOM_SCAN_TABLE_RANGE("a", 'z', CSS_CHAR_ALPHA | CSS_CHAR_IDENT | CSS_CHAR_IDENT_START),
   
   DOM_SCAN_TABLE_RANGE("\241", 255, CSS_CHAR_NON_ASCII | CSS_CHAR_IDENT | CSS_CHAR_IDENT_START),
 
   DOM_SCAN_TABLE_STRING(" \f\n\r\t\v\000", CSS_CHAR_WHITESPACE),
   DOM_SCAN_TABLE_STRING("\f\n\r",   CSS_CHAR_NEWLINE),
   DOM_SCAN_TABLE_STRING("-",     CSS_CHAR_IDENT),
   DOM_SCAN_TABLE_STRING(".#@!\"'<-/|^$*",    CSS_CHAR_TOKEN_START),
   
   DOM_SCAN_TABLE_STRING("\\_",   CSS_CHAR_IDENT | CSS_CHAR_IDENT_START),
   
   DOM_SCAN_TABLE_STRING("[({})];:,.>+~",  CSS_CHAR_TOKEN),
   DOM_SCAN_TABLE_STRING("<![CDATA]->", CSS_CHAR_SGML_MARKUP),
 
   DOM_SCAN_TABLE_END,
}

css_string_mappings

const struct dom_scanner_string_mapping css_string_mappings[]

static

Initial value:

= {
   CSS_STRING_MAP("Hz",    FREQUENCY,  DIMENSION),
   CSS_STRING_MAP("cm",    LENGTH,     DIMENSION),
   CSS_STRING_MAP("deg",      ANGLE,      DIMENSION),
   CSS_STRING_MAP("em",    EM,      DIMENSION),
   CSS_STRING_MAP("ex",    EX,      DIMENSION),
   CSS_STRING_MAP("grad",     ANGLE,      DIMENSION),
   CSS_STRING_MAP("in",    LENGTH,     DIMENSION),
   CSS_STRING_MAP("kHz",      FREQUENCY,  DIMENSION),
   CSS_STRING_MAP("mm",    LENGTH,     DIMENSION),
   CSS_STRING_MAP("ms",    TIME,    DIMENSION),
   CSS_STRING_MAP("pc",    LENGTH,     DIMENSION),
   CSS_STRING_MAP("pt",    LENGTH,     DIMENSION),
   CSS_STRING_MAP("px",    LENGTH,     DIMENSION),
   CSS_STRING_MAP("rad",      ANGLE,      DIMENSION),
   CSS_STRING_MAP("s",     TIME,    DIMENSION),
 
   CSS_STRING_MAP("rgb",      RGB,     FUNCTION),
   CSS_STRING_MAP("url",      URL,     FUNCTION),
 
   CSS_STRING_MAP("charset",  AT_CHARSET, AT_KEYWORD),
   CSS_STRING_MAP("font-face",   AT_FONT_FACE,  AT_KEYWORD),
   CSS_STRING_MAP("import",   AT_IMPORT,  AT_KEYWORD),
   CSS_STRING_MAP("media",    AT_MEDIA,   AT_KEYWORD),
   CSS_STRING_MAP("page",     AT_PAGE, AT_KEYWORD),
 
   DOM_STRING_MAP_END,
}

dom_css_scanner_info

struct dom_scanner_info dom_css_scanner_info

Initial value:

= {
   css_string_mappings,
   css_scan_table_info,
   scan_css_tokens,
}