css_lex.c

著名的标准C＋＋的html解析器

		switch ( yy_act )
	{ /* beginning of action switch */
case 1:
YY_RULE_SETUP
#line 31 "css_lex.l"
{BEGIN(COMMENT);}
	YY_BREAK
case 2:
YY_RULE_SETUP
#line 32 "css_lex.l"
/* eat anything that's not a '*' */
	YY_BREAK
case 3:
YY_RULE_SETUP
#line 33 "css_lex.l"
/* eat up '*'s not followed by '/'s */
	YY_BREAK
case 4:
YY_RULE_SETUP
#line 34 "css_lex.l"
BEGIN(0);
	YY_BREAK
case 5:
YY_RULE_SETUP
#line 35 "css_lex.l"
{BEGIN(0); return IMPORT_SYM;}
	YY_BREAK
case 6:
YY_RULE_SETUP
#line 36 "css_lex.l"
{BEGIN(0); return IMPORTANT_SYM;}
	YY_BREAK
case 7:
YY_RULE_SETUP
#line 37 "css_lex.l"
{
						BEGIN(AFTER_IDENT);
						lvalp->lexeme = strdup(yytext);
						return IDENT;
					}
	YY_BREAK
case 8:
YY_RULE_SETUP
#line 42 "css_lex.l"
{
						BEGIN(0); 
						lvalp->lexeme = strdup(yytext);
						return STRING;
					}
	YY_BREAK
case 9:
YY_RULE_SETUP
#line 48 "css_lex.l"
{
						BEGIN(0); 
						lvalp->lexeme = strdup(yytext);
						return NUMBER;
					}
	YY_BREAK
case 10:
YY_RULE_SETUP
#line 53 "css_lex.l"
{
						BEGIN(0);
						lvalp->lexeme = strdup(yytext);
						return PERCENTAGE;
					}
	YY_BREAK
case 11:
YY_RULE_SETUP
#line 58 "css_lex.l"
{
							BEGIN(0); 
							lvalp->lexeme = strdup(yytext);
							return LENGTH;
						}
	YY_BREAK
case 12:
YY_RULE_SETUP
#line 63 "css_lex.l"
{
							BEGIN(0); 
							lvalp->lexeme = strdup(yytext);
							return LENGTH;
						}
	YY_BREAK
case 13:
YY_RULE_SETUP
#line 68 "css_lex.l"
{
							BEGIN(0); 
							lvalp->lexeme = strdup(yytext);
							return LENGTH;
						}
	YY_BREAK
case 14:
YY_RULE_SETUP
#line 73 "css_lex.l"
{
							BEGIN(0); 
							lvalp->lexeme = strdup(yytext);
							return LENGTH;
						}
	YY_BREAK
case 15:
YY_RULE_SETUP
#line 78 "css_lex.l"
{
							BEGIN(0); 
							lvalp->lexeme = strdup(yytext);
							return LENGTH;
						}
	YY_BREAK
case 16:
YY_RULE_SETUP
#line 83 "css_lex.l"
{
							BEGIN(0); 
							lvalp->lexeme = strdup(yytext);
							return LENGTH;
						}
	YY_BREAK
case 17:
YY_RULE_SETUP
#line 88 "css_lex.l"
{
							BEGIN(0); 
							lvalp->lexeme = strdup(yytext);
							return EMS;
						}
	YY_BREAK
case 18:
YY_RULE_SETUP
#line 93 "css_lex.l"
{
							BEGIN(0); 
							lvalp->lexeme = strdup(yytext);
							return EXS;
						}
	YY_BREAK
case 19:
YY_RULE_SETUP
#line 99 "css_lex.l"
{return LINK_PSCLASS_AFTER_IDENT;}
	YY_BREAK
case 20:
YY_RULE_SETUP
#line 100 "css_lex.l"
{return VISITED_PSCLASS_AFTER_IDENT;}
	YY_BREAK
case 21:
YY_RULE_SETUP
#line 101 "css_lex.l"
{return ACTIVE_PSCLASS_AFTER_IDENT;}
	YY_BREAK
case 22:
YY_RULE_SETUP
#line 102 "css_lex.l"
{return FIRST_LINE_AFTER_IDENT;}
	YY_BREAK
case 23:
YY_RULE_SETUP
#line 103 "css_lex.l"
{return FIRST_LETTER_AFTER_IDENT;}
	YY_BREAK
case 24:
YY_RULE_SETUP
#line 104 "css_lex.l"
{
								lvalp->lexeme = strdup(yytext+1);
								return HASH_AFTER_IDENT;
							}
	YY_BREAK
case 25:
YY_RULE_SETUP
#line 108 "css_lex.l"
{
								lvalp->lexeme = strdup(yytext+1);
								return CLASS_AFTER_IDENT;
							}
	YY_BREAK
case 26:
YY_RULE_SETUP
#line 113 "css_lex.l"
{BEGIN(AFTER_IDENT); return LINK_PSCLASS;}
	YY_BREAK
case 27:
YY_RULE_SETUP
#line 114 "css_lex.l"
{BEGIN(AFTER_IDENT); return VISITED_PSCLASS;}
	YY_BREAK
case 28:
YY_RULE_SETUP
#line 115 "css_lex.l"
{BEGIN(AFTER_IDENT); return ACTIVE_PSCLASS;}
	YY_BREAK
case 29:
YY_RULE_SETUP
#line 116 "css_lex.l"
{BEGIN(AFTER_IDENT); return FIRST_LINE;}
	YY_BREAK
case 30:
YY_RULE_SETUP
#line 117 "css_lex.l"
{BEGIN(AFTER_IDENT); return FIRST_LETTER;}
	YY_BREAK
case 31:
YY_RULE_SETUP
#line 118 "css_lex.l"
{
						BEGIN(AFTER_IDENT);
						lvalp->lexeme = strdup(yytext+1);
						return HASH;
					}
	YY_BREAK
case 32:
YY_RULE_SETUP
#line 123 "css_lex.l"
{
						BEGIN(AFTER_IDENT);
						lvalp->lexeme = strdup(yytext+1);
						return CLASS;
					}
	YY_BREAK
case 33:
#line 130 "css_lex.l"
case 34:
YY_RULE_SETUP
#line 130 "css_lex.l"
{
														BEGIN(0); 
														lvalp->lexeme = 
															strdup(yytext);
														return URL;
													}
	YY_BREAK
case 35:
YY_RULE_SETUP
#line 136 "css_lex.l"
{
														BEGIN(0);
														lvalp->lexeme = 
															strdup(yytext);
														return RGB;
													}
	YY_BREAK
case 36:
YY_RULE_SETUP
#line 143 "css_lex.l"
{BEGIN(0); return *yytext;}
	YY_BREAK
case 37:
YY_RULE_SETUP
#line 144 "css_lex.l"
{BEGIN(0); /* ignore whitespace */}
	YY_BREAK
case 38:
YY_RULE_SETUP
#line 145 "css_lex.l"
{BEGIN(0); /* ignore whitespace */}
	YY_BREAK
case 39:
YY_RULE_SETUP
#line 146 "css_lex.l"
{BEGIN(0); return CDO;}
	YY_BREAK
case 40:
YY_RULE_SETUP
#line 147 "css_lex.l"
{BEGIN(0); return CDC;}
	YY_BREAK
case 41:
YY_RULE_SETUP
#line 148 "css_lex.l"
{BEGIN(0); return CSL;}
	YY_BREAK
case 42:
YY_RULE_SETUP
#line 149 "css_lex.l"
{fprintf(stderr, "Illegal character (%d)\n", *yytext);}
	YY_BREAK
case 43:
YY_RULE_SETUP
#line 151 "css_lex.l"
ECHO;
	YY_BREAK
#line 1465 "css_lex.c"
			case YY_STATE_EOF(INITIAL):
			case YY_STATE_EOF(COMMENT):
			case YY_STATE_EOF(AFTER_IDENT):
				yyterminate();

	case YY_END_OF_BUFFER:
		{
		/* Amount of text matched not including the EOB char. */
		int yy_amount_of_matched_text = (int) (yy_cp - yytext_ptr) - 1;

		/* Undo the effects of YY_DO_BEFORE_ACTION. */
		*yy_cp = yy_hold_char;
		YY_RESTORE_YY_MORE_OFFSET

		if ( yy_current_buffer->yy_buffer_status == YY_BUFFER_NEW )
			{
			/* We're scanning a new file or input source.  It's
			 * possible that this happened because the user
			 * just pointed yyin at a new source and called
			 * yylex().  If so, then we have to assure
			 * consistency between yy_current_buffer and our
			 * globals.  Here is the right place to do so, because
			 * this is the first action (other than possibly a
			 * back-up) that will match for the new input source.
			 */
			yy_n_chars = yy_current_buffer->yy_n_chars;
			yy_current_buffer->yy_input_file = yyin;
			yy_current_buffer->yy_buffer_status = YY_BUFFER_NORMAL;
			}

		/* Note that here we test for yy_c_buf_p "<=" to the position
		 * of the first EOB in the buffer, since yy_c_buf_p will
		 * already have been incremented past the NUL character
		 * (since all states make transitions on EOB to the
		 * end-of-buffer state).  Contrast this with the test
		 * in input().
		 */
		if ( yy_c_buf_p <= &yy_current_buffer->yy_ch_buf[yy_n_chars] )
			{ /* This was really a NUL. */
			yy_state_type yy_next_state;

			yy_c_buf_p = yytext_ptr + yy_amount_of_matched_text;

			yy_current_state = yy_get_previous_state();

			/* Okay, we're now positioned to make the NUL
			 * transition.  We couldn't have
			 * yy_get_previous_state() go ahead and do it
			 * for us because it doesn't know how to deal
			 * with the possibility of jamming (and we don't
			 * want to build jamming into it because then it
			 * will run more slowly).
			 */

			yy_next_state = yy_try_NUL_trans( yy_current_state );

			yy_bp = yytext_ptr + YY_MORE_ADJ;

			if ( yy_next_state )
				{
				/* Consume the NUL. */
				yy_cp = ++yy_c_buf_p;
				yy_current_state = yy_next_state;
				goto yy_match;
				}

			else
				{
				yy_cp = yy_c_buf_p;
				goto yy_find_action;
				}
			}

		else switch ( yy_get_next_buffer() )
			{
			case EOB_ACT_END_OF_FILE:
				{
				yy_did_buffer_switch_on_eof = 0;

				if ( yywrap() )
					{
					/* Note: because we've taken care in
					 * yy_get_next_buffer() to have set up
					 * yytext, we can now set up
					 * yy_c_buf_p so that if some total
					 * hoser (like flex itself) wants to
					 * call the scanner after we return the
					 * YY_NULL, it'll still work - another
					 * YY_NULL will get returned.
					 */
					yy_c_buf_p = yytext_ptr + YY_MORE_ADJ;

					yy_act = YY_STATE_EOF(YY_START);
					goto do_action;
					}

				else
					{
					if ( ! yy_did_buffer_switch_on_eof )
						YY_NEW_FILE;
					}
				break;
				}