PPT Slide

boolean at_start = true;

private void print_xml_declaration() {

if (at_start) {

System.out.print("<?xml version='1.0'?>");

}

}

...

%}

%%

{Title} { print_xml_declaration();

print_root_start_tag("BookCatalogue");

print_start_tag("Book");

print_start_tag("Title");

print_element_data(yytext());

print_end_tag("Title");

}

{Field} { print_start_tag("Field");

print_element_data(yytext());

print_end_tag("Field");

}

{Slash} { print_new_line(); }

{LineTerminator} { print_end_tag("Book");

print_new_line();

}

<<EOF>> { print_root_end_tag("BookCatalogue");

return 0;

}

mylexer.flex

See example09

Do Lab8

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