(tag-open-state) ( document n/f string ch/f -- document n'/f string )

Vocabulary

html5

Inputs

document	an object
n/f	an object
string	an object
ch/f	an object

Outputs

document	an object
n'/f	an object
string	an object

Definition

USING: combinators kernel ;

IN: html5

: (tag-open-state)
    ( document n/f string ch/f -- document n'/f string )
    {
        {
            [ dup ascii-alpha? ]
            [ reach new-tag (tag-name-state) ]
        }
        { [ dup 33 = ] [ drop markup-declaration-open-state ] }
        { [ dup 47 = ] [ drop end-tag-open-state ] }
        {
            [ dup 63 = ]
            [ unexpected-question-mark-instead-of-tag-name ]
        }
        { [ dup f = ] [ eof-before-tag-name ] }
        [ invalid-first-character-of-tag-name ]
    } cond ;