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/**
* Name: forth
* Description: Forth Programming Language.
* Author: Brent Fulgham <bfulgham@debian.org>
*/
forth_builtins =
/* builtins */
/\b(abort|bye|c(atch|o(ld|ntext))|d(rop|up)|f(d(rop|up)|nip|o(r(get|th)|ver)|rot\
|s(eal|wap)|tuck)|include|l(ink|oad)|n(ip|eeds)|o(rder|ver)|pick|ro(ll|t)|swap|t(hrow|uck)\
|within|2(drop|nip|dup|over|tuck|swap|rot)|3dup|4dup\
)\b/;
forth_types =
/* types */
/\b(base|c(ell|har)|decimal|float|hex)\b/;
forth_keywords =
/* keywords */
/\b(a(bs|gain|head|lso|nd)|begin|c(ase|onstant)|d(abs|efinitions|m(ax|in)|negate|o(|ne))\
|e(lse|nd(|case|if|of)|xit)|f(a(bs|cos(|h)|log|sin(|h)|tan(|2|h))|cos(|h)|exp(|m1)|l(n(|p1)\
|o(g|or)|s(in(|cos|h)|qrt)|tan(|h))|m(ax|in)|negate|or|round|sqrt)|h(ere|old)|i(f|nvert)\
|l(eave|oop)|m(ax|in|od)|n(e(gate|xt)|ot)|o(f|nly|r)|r(epeat|oot)|s(eal|ign)|then\
|un(til|loop)|v(ariable|oc(abulary|s))|while|xor\
)\b/;
state forth extends HighlightEntry
{
/* Comments. */
/\\\\/ {
comment_face (true);
language_print ($0);
call (eat_one_line);
comment_face (false);
}
/* keywords. */
forth_keywords {
keyword_face (true);
language_print ($0);
keyword_face (false);
}
/* Types. */
forth_types {
type_face (true);
language_print ($0);
type_face (false);
}
/* Builtins support */
forth_builtins {
reference_face (true);
language_print ($0);
reference_face (false);
}
/* String constants. */
/\"/ {
string_face (true);
language_print ($0);
call (c_string);
string_face (false);
}
/* character constants. */
/'.'|'\\\\.'/ {
string_face (true);
language_print ($0);
string_face (false);
}
/* symbols, etc. */
/>|>=|<=|<>|!|\+|\-|\^|\/|\*|\|/ {
reference_face (true);
language_print ($0);
reference_face (false);
}
/*
* function definitions, with args
* fct_name (args...) is
*/
/^(:[ \t]+)([^ ^\t]+)([ \t]*)/ {
keyword_face (true);
language_print ($1);
keyword_face (false);
function_name_face (true);
face_on(face_bold_italic);
language_print ($2);
face_off(face_bold_italic);
function_name_face (false);
language_print ($3);
}
}
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