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|
##### LM #####
context generate
def open_item
type: str
num: int
[]
OpenStack: list<open_item>
lex
token stray_close //
token ocurly /'{'+/
{
input.pull( match_length )
cons OI: open_item( '{' match_length ) []
OpenStack.push( OI )
i: int = 0
while ( i < match_length ) {
input.push( make_token( typeid<ocurly> '{' ) )
i = i + 1
}
}
token ccurly1 //
token ccurly2 //
token ccurly3 //
token missing_curly //
token tmp1 /'}'+/
{
if OpenStack.length > 0 && OpenStack.tail.type == '{' {
length: int = 3
if ( length > match_length )
length = match_length
Tail: open_item = OpenStack.pop()
if ( length > Tail.num )
length = Tail.num
if ( length == 1 )
input.push( make_token( typeid<ccurly1> input.pull( 1 ) ) )
else if ( length == 2 )
input.push( make_token( typeid<ccurly2> input.pull( 2 ) ) )
else if ( length == 3 )
input.push( make_token( typeid<ccurly3> input.pull( 3 ) ) )
Tail.num = Tail.num - length
if ( Tail.num > 0 )
OpenStack.push( Tail )
}
else {
input.push( make_token( typeid<stray_close> input.pull( match_length ) ) )
}
}
token osquare /'['+/
{
input.pull( match_length )
OI: open_item = construct open_item( '[' match_length ) []
OpenStack.push( OI )
i: int = 0
while ( i < match_length ) {
input.push( make_token( typeid<osquare> '[' ) )
i = i + 1
}
}
token csquare1 //
token csquare2 //
token missing_square //
token tmp2 /']'+/
{
if OpenStack.length > 0 && OpenStack.tail.type == '[' {
length: int = 2
if ( length > match_length )
length = match_length
Tail: open_item = OpenStack.pop()
if ( length > Tail.num )
length = Tail.num
if ( length == 1 )
input.push( make_token( typeid<csquare1> input.pull( 1 ) ) )
else if ( length == 2 )
input.push( make_token( typeid<csquare2> input.pull( 2 ) ) )
Tail.num = Tail.num - length
if ( Tail.num > 0 )
OpenStack.push( Tail )
}
else {
input.push( make_token( typeid<stray_close> input.pull( match_length ) ) )
}
}
literal `|
token char /any/
preeof {
while ( OpenStack.length > 0 ) {
Tail: open_item = OpenStack.pop()
i: int
if ( Tail.type == '{' ) {
i = 0
while ( i < Tail.num ) {
input.push( make_token( typeid<missing_curly> '}' ) )
i = i + 1
}
}
else if ( Tail.type == '[' ) {
i = 0
while ( i < Tail.num ) {
input.push( make_token( typeid<missing_square> ']' ) )
i = i + 1
}
}
}
}
end
#
# Internal Links
#
lex
literal `http:
literal `ftp:
literal `mailto:
end
def el_prefix
[`http:]
| [`ftp:]
| [`mailto:]
def external_link
[osquare item* csquare1]
def internal_link
[osquare osquare item* csquare2]
def unclosed_square
[osquare item* missing_square]
#
# Templates
#
def sing_template
[ocurly item* ccurly1]
def template
[ocurly ocurly item* ccurly2]
def parameter
[ocurly ocurly ocurly item* ccurly3]
def unclosed_curly
[ocurly item* missing_curly]
#
# Template Parameters
#
def U1 []
def U2 []
def U3 []
def item
[external_link]
| [internal_link]
| [unclosed_curly]
| [sing_template]
| [template]
| [parameter]
| [unclosed_curly]
| [stray_close]
| [osquare]
| [`|]
| [char]
def start
[item*]
end # generate
cons Generate: generate[]
Generate.OpenStack = construct list<generate::open_item> []
Sentinal: generate::open_item = construct generate::open_item( '** SENTINAL **' 1 ) []
Generate.OpenStack.push( Sentinal )
parse S: generate::start(Generate)[stdin]
if S {
for I: generate::external_link in S
print( 'EXTERNAL LINK: ' I '\n' )
for I: generate::internal_link in S
print( 'INTERNAL LINK: ' I '\n' )
}
##### IN #####
[external]
[[internal]]
##### EXP #####
EXTERNAL LINK: [external]
INTERNAL LINK: [[internal]]
|
