ref: 9f76a7f6819ac04552b4fb6588156f3e4089d1d7
dir: /appl/charon/lex.m/
Lex: module
{
PATH: con "/dis/charon/lex.dis";
# HTML 4.0 tags (blink, nobr)
# sorted in lexical order; used as array indices
Notfound, Comment,
Ta, Tabbr, Tacronym, Taddress, Tapplet, Tarea, Tb,
Tbase, Tbasefont, Tbdo, Tbig, Tblink, Tblockquote, Tbody,
Tbq, Tbr, Tbutton, Tcaption, Tcenter, Tcite, Tcode, Tcol, Tcolgroup,
Tdd, Tdel, Tdfn, Tdir, Tdiv, Tdl, Tdt, Tem,
Tfieldset, Tfont, Tform, Tframe, Tframeset,
Th1, Th2, Th3, Th4, Th5, Th6, Thead, Thr, Thtml, Ti, Tiframe, Timage,
Timg, Tinput, Tins, Tisindex, Tkbd, Tlabel, Tlegend, Tli, Tlink, Tmap,
Tmenu, Tmeta, Tnobr, Tnoframes, Tnoscript,
Tobject, Tol, Toptgroup, Toption, Tp, Tparam, Tpre,
Tq, Ts, Tsamp, Tscript, Tselect, Tsmall, Tspan, Tstrike, Tstrong,
Tstyle, Tsub, Tsup, Ttable, Ttbody, Ttd, Ttextarea, Ttfoot, Tth,
Tthead, Ttitle, Ttr, Ttt, Tu, Tul, Tvar, Txmp,
Numtags
: con iota;
RBRA : con Numtags;
Data: con Numtags+RBRA;
tagnames: array of string;
# HTML 4.0 tag attributes
# Keep sorted in lexical order
Aabbr, Aaccept, Aaccept_charset, Aaccesskey, Aaction,
Aalign, Aalink, Aalt, Aarchive, Aaxis,
Abackground, Abgcolor, Aborder,
Acellpadding, Acellspacing, Achar, Acharoff,
Acharset, Achecked, Acite, Aclass, Aclassid, Aclear,
Acode, Acodebase, Acodetype,
Acolor, Acols, Acolspan, Acompact, Acontent, Acoords,
Adata, Adatafld, Adataformatas, Adatapagesize, Adatasrc,
Adatetime, Adeclare, Adefer, Adir, Adisabled,
Aenctype, Aevent,
Aface, Afor, Aframe, Aframeborder,
Aheaders, Aheight, Ahref, Ahreflang, Ahspace, Ahttp_equiv,
Aid, Aismap, Alabel, Alang, Alanguage, Alink, Alongdesc, Alowsrc,
Amarginheight, Amarginwidth, Amaxlength, Amedia, Amethod, Amultiple,
Aname, Anohref, Anoresize, Anoshade, Anowrap, Aobject,
Aonabort, Aonblur, Aonchange, Aonclick, Aondblclick,
Aonerror, Aonfocus, Aonkeydown, Aonkeypress, Aonkeyup, Aonload,
Aonmousedown, Aonmousemove, Aonmouseout, Aonmouseover,
Aonmouseup, Aonreset, Aonresize, Aonselect, Aonsubmit, Aonunload,
Aprofile, Aprompt, Areadonly, Arel, Arev, Arows, Arowspan, Arules,
Ascheme, Ascope, Ascrolling, Aselected, Ashape, Asize,
Aspan, Asrc, Astandby, Astart, Astyle, Asummary,
Atabindex, Atarget, Atext, Atitle, Atype, Ausemap,
Avalign, Avalue, Avaluetype, Aversion, Avlink, Avspace, Awidth,
Numattrs
: con iota;
attrnames: array of string;
Token: adt
{
tag: int;
text: string; # text in Data, attribute text in tag
attr: list of Attr;
aval: fn(t: self ref Token, attid: int) : (int, string);
tostring: fn(t: self ref Token) : string;
};
Attr: adt
{
attid: int;
value: string;
};
# A source of HTML tokens.
# After calling new with a ByteSource (which is past 'gethdr' stage),
# call gettoks repeatedly until get nil. Errors are signalled by exceptions.
# Possible exceptions raised:
# EXInternal (start, gettoks)
# exGeterror (gettoks)
# exAbort (gettoks)
TokenSource: adt
{
b: ref CharonUtils->ByteSource;
chset: Btos; # charset converter
state : ref TSstate;
mtype: int; # CU->TextHtml or CU->TextPlain
inxmp: int;
new: fn(b: ref CharonUtils->ByteSource, chset : Btos, mtype: int) : ref TokenSource;
gettoks: fn(ts: self ref TokenSource) : array of ref Token;
setchset: fn(ts: self ref TokenSource, conv : Btos);
};
TSstate : adt {
bi : int;
prevbi : int;
s : string;
si : int;
csstate : Convcs->State;
prevcsstate : Convcs->State;
};
init: fn(cu: CharonUtils);
};