======ragel ======
======epxr ======
^                   ^            ^ ^
| expr . expr       | concat     | |
| expr %%|%% expr   | nebo       | |
| expr & expr       | intersect  | |
| expr - expr       | diff       | |
| expr %%--%% expr  | strong diff| |
| expr*             |            | |
| expr+             |            | |
| expr?             |            | |
| expr{n,m}         |            | |
|!expr              |            | |
|%%^expr%%          |            | |
======extra ======
defacto hratky s prioritami
^guarded        ^            ^ ^
| expr :>  expr |main = any* :> 'FIN'                |Finish-Guarded Concatenation|
| expr ::> expr |comment= '/*' (any @comm)* :>> '*/' |Entry-Guarded Concatenation|
| expr ::> expr |main = any* :>> 'FIN'               |catch-all on the last chars of FIN|
| expr <:  expr |main := (' '* >start %fin ) <: (' ' $ws %%|%% [a-z] $alpha)*|Left-Guarded Concatenation|
| expr **  expr | |Left-Guarded Concatenation|
======action ======
action a1 { c-code; }
======transitional ======
^  ^       ^
|> |start  |
|$ |all    |
|% |leave  |
|@ |finish |
<code>
main := (lower* >A $B %C ) . '\n' @N;
</code>
======in state ======
======variable ======
host interface
^       ^  ^  ^
|int    |cs   |current state, lze modifikovat "zvenku"|
|char * |p    | data pointer |
|char * |pe   | data end pointer |
|int    |eof   | end-of-file pointer |
|array  |data  | pouze java,ruby |
|int[]  |stack | |
|int    |top | viz stack |
|int    |act | někdy použito [[#scanner|skenerem]] |
|char * |ts  | pro skener? 6.3|
|char * |te  | pro skener? 6.3|
pomoci [[#variable]] lze p,pe,eof,cs,top,stack,ts,te,act předifovat,
lze také použít [[#getkey]] a/nebo [[#access]]
=====getkey *p=====
způsob, jak získat dato z data pointeru, opakovaně použito!
=====access fsm->=====
definuje prefix, zpravidla pointer na strukturu
=====prepush=====
=====postpop=====
kod pro manipulaci se zásobníkem, pokud je tento dynamický (top,stack)
použíto během [[#fcall]]
======write======
=====write data ?nofinal|noerror|nofinal? =====
konstantní static data, do třídy, funkce i global.
=====write start=====
=====write first_final=====
=====write error=====
alternativa pro přístup ke start/first_final/error statvům
=====write init ?nocs?=====
zpravidla inicializace cs, top/stack, pouze jednou před startem mašiny
=====write exec=====
=====write exports=====