Declaring states, transitioning states

%state TITLE, AUTHOR, DATE, ISBN, PUBLISHER

...

<TITLE> {

{Title} { print_start_tag("Book");

print_start_tag("Title");

print_element_data(yytext());

print_end_tag("Title");

}

{Slash} { yybegin(AUTHOR); }

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

return 0;

}

}

Declare the states

While in the

TITLE state

these are the

rules to be

used.

When a slash is

consumed while

in the TITLE

state, the lexer is

to then transition

to the AUTHOR

state.

TITLE state

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