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|
lex
token DEF / 'def' /
token id / ( 'a' .. 'z' ) + /
token SQOPEN /'['/
token SQCLOSE /']'/
token COLON /':'/
token FOIL /'!'/
ignore / ( '\n' | ' ' )+ /
end
def opt_prod_el_name
[id COLON]
| []
def prod_el
[opt_prod_el_name id]
def prod
[SQOPEN prod_el SQCLOSE]
def E []
def item
[DEF] | [id] | [SQOPEN] | [SQCLOSE] | [COLON]
def cfl_def
[E item* FOIL]
| [DEF id prod]
parse Id: id
[stdin]
cons Def: cfl_def
"def x \[[Id]\]"
match Def
"def x \[[id]\]
print [xml(Def) "\n"]
##### IN #####
y
##### EXP ####
<cfl_def><DEF>def</DEF><id>x</id><prod><SQOPEN>[</SQOPEN><prod_el><opt_prod_el_name></opt_prod_el_name><id>y</id></prod_el><SQCLOSE>]</SQCLOSE></prod></cfl_def>
|
