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|
routines (
prelude postlude mark_regions
RV R1 R2
standard_suffix
verb_suffix
residual_suffix
residual_form
)
externals ( stem )
integers ( pV p1 p2 )
groupings ( v )
stringescapes {}
/* special characters (in ISO Latin I) */
stringdef a' hex 'E1' // a-acute
stringdef a^ hex 'E2' // a-circumflex e.g. 'bota^nico
stringdef e' hex 'E9' // e-acute
stringdef e^ hex 'EA' // e-circumflex
stringdef i' hex 'ED' // i-acute
stringdef o^ hex 'F4' // o-circumflex
stringdef o' hex 'F3' // o-acute
stringdef u' hex 'FA' // u-acute
stringdef c, hex 'E7' // c-cedilla
stringdef a~ hex 'E3' // a-tilde
stringdef o~ hex 'F5' // o-tilde
define v 'aeiou{a'}{e'}{i'}{o'}{u'}{a^}{e^}{o^}'
define prelude as repeat (
[substring] among(
'{a~}' (<- 'a~')
'{o~}' (<- 'o~')
'' (next)
) //or next
)
define mark_regions as (
$pV = limit
$p1 = limit
$p2 = limit // defaults
do (
( v (non-v gopast v) or (v gopast non-v) )
or
( non-v (non-v gopast v) or (v next) )
setmark pV
)
do (
gopast v gopast non-v setmark p1
gopast v gopast non-v setmark p2
)
)
define postlude as repeat (
[substring] among(
'a~' (<- '{a~}')
'o~' (<- '{o~}')
'' (next)
) //or next
)
backwardmode (
define RV as $pV <= cursor
define R1 as $p1 <= cursor
define R2 as $p2 <= cursor
define standard_suffix as (
[substring] among(
'eza' 'ezas'
'ico' 'ica' 'icos' 'icas'
'ismo' 'ismos'
'{a'}vel'
'{i'}vel'
'ista' 'istas'
'oso' 'osa' 'osos' 'osas'
'amento' 'amentos'
'imento' 'imentos'
'adora' 'ador' 'a{c,}a~o'
'adoras' 'adores' 'a{c,}o~es' // no -ic test
'ante' 'antes' '{a^}ncia' // Note 1
(
R2 delete
)
'logia'
'logias'
(
R2 <- 'log'
)
'u{c,}a~o' 'u{c,}o~es'
(
R2 <- 'u'
)
'{e^}ncia' '{e^}ncias'
(
R2 <- 'ente'
)
'amente'
(
R1 delete
try (
[substring] R2 delete among(
'iv' (['at'] R2 delete)
'os'
'ic'
'ad'
)
)
)
'mente'
(
R2 delete
try (
[substring] among(
'ante' // Note 1
'avel'
'{i'}vel' (R2 delete)
)
)
)
'idade'
'idades'
(
R2 delete
try (
[substring] among(
'abil'
'ic'
'iv' (R2 delete)
)
)
)
'iva' 'ivo'
'ivas' 'ivos'
(
R2 delete
try (
['at'] R2 delete // but not a further ['ic'] R2 delete
)
)
'ira' 'iras'
(
RV 'e' // -eira -eiras usually non-verbal
<- 'ir'
)
)
)
define verb_suffix as setlimit tomark pV for (
[substring] among(
'ada' 'ida' 'ia' 'aria' 'eria' 'iria' 'ar{a'}' 'ara' 'er{a'}'
'era' 'ir{a'}' 'ava' 'asse' 'esse' 'isse' 'aste' 'este' 'iste'
'ei' 'arei' 'erei' 'irei' 'am' 'iam' 'ariam' 'eriam' 'iriam'
'aram' 'eram' 'iram' 'avam' 'em' 'arem' 'erem' 'irem' 'assem'
'essem' 'issem' 'ado' 'ido' 'ando' 'endo' 'indo' 'ara~o'
'era~o' 'ira~o' 'ar' 'er' 'ir' 'as' 'adas' 'idas' 'ias'
'arias' 'erias' 'irias' 'ar{a'}s' 'aras' 'er{a'}s' 'eras'
'ir{a'}s' 'avas' 'es' 'ardes' 'erdes' 'irdes' 'ares' 'eres'
'ires' 'asses' 'esses' 'isses' 'astes' 'estes' 'istes' 'is'
'ais' 'eis' '{i'}eis' 'ar{i'}eis' 'er{i'}eis' 'ir{i'}eis'
'{a'}reis' 'areis' '{e'}reis' 'ereis' '{i'}reis' 'ireis'
'{a'}sseis' '{e'}sseis' '{i'}sseis' '{a'}veis' 'ados' 'idos'
'{a'}mos' 'amos' '{i'}amos' 'ar{i'}amos' 'er{i'}amos'
'ir{i'}amos' '{a'}ramos' '{e'}ramos' '{i'}ramos' '{a'}vamos'
'emos' 'aremos' 'eremos' 'iremos' '{a'}ssemos' '{e^}ssemos'
'{i'}ssemos' 'imos' 'armos' 'ermos' 'irmos' 'eu' 'iu' 'ou'
'ira' 'iras'
(delete)
)
)
define residual_suffix as (
[substring] among(
'os'
'a' 'i' 'o' '{a'}' '{i'}' '{o'}'
( RV delete )
)
)
define residual_form as (
[substring] among(
'e' '{e'}' '{e^}'
( RV delete [('u'] test 'g') or
('i'] test 'c') RV delete )
'{c,}' (<-'c')
)
)
)
define stem as (
do prelude
do mark_regions
backwards (
do (
( ( standard_suffix or verb_suffix )
and do ( ['i'] test 'c' RV delete )
)
or residual_suffix
)
do residual_form
)
do postlude
)
/*
Note 1: additions of 15 Jun 2005
*/
|
