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/*
* ʸζФ롣
*
* metawordˤϥӥӥ르ꥺȤ
*
* anthy_eval_border() ǻꤵ줿ΰʸʬ䤹
*
* Funded by IPA̤Ƨեȥ¤ 2001 10/29
* Copyright (C) 2000-2003 TABATA Yusuke, UGAWA Tomoharu
*/
#include <stdio.h>
#include <stdlib.h>
#include <anthy/alloc.h>
#include <anthy/splitter.h>
#include "wordborder.h"
static int
border_check(struct meta_word* mw,
int from,
int border)
{
if (mw->from < border) {
/* Ƭʸ椫ϤޤmwʸڤˤԤäꤢäƤʤȥ */
if (mw->from == from && mw->from + mw->len == border) {
return 1;
} else {
return 0;
}
} else {
/* ʸ̵˻Ѳǽ */
return 1;
}
}
/*
* ƵŪmetawordѲǽå
*/
static void
metaword_constraint_check(struct splitter_context *sc,
struct meta_word *mw,
int from,
int border)
{
if (!mw) return;
if (mw->can_use != unchecked) return;
switch(anthy_metaword_type_tab[mw->type].check){
case MW_CHECK_SINGLE:
mw->can_use = border_check(mw, from, border) ? ok : ng;
break;
case MW_CHECK_BORDER:
{
struct meta_word* mw1 = mw->mw1;
struct meta_word* mw2 = mw->mw2;
if (mw1&&mw2&&mw1->from + mw1->len == border) {
/* 礦ɶܤ˥ޡäƤ */
mw->can_use = ng;
break;
}
if (mw1)
metaword_constraint_check(sc, mw1, from, border);
if (mw2)
metaword_constraint_check(sc, mw2, mw2->from, border);
if ((!mw1 || mw1->can_use == ok) && (!mw2 || mw2->can_use == ok)) {
mw->can_use = ok;
} else {
mw->can_use = ng;
}
}
break;
case MW_CHECK_WRAP:
metaword_constraint_check(sc, mw->mw1, from, border);
mw->can_use = mw->mw1->can_use;
break;
case MW_CHECK_NUMBER:
{
struct meta_word* itr = mw;
mw->can_use = ok;
/* ġʸΰĤǤʸڤޤäƤСʣϻȤʤ */
for (; itr && itr->type == MW_NUMBER; itr = itr->mw2) {
struct meta_word* mw1 = itr->mw1;
if (!border_check(mw1, from, border)) {
mw->can_use = ng;
break;
}
}
}
break;
case MW_CHECK_COMPOUND:
{
struct meta_word* itr = mw;
mw->can_use = ok;
/* ġʸΰĤǤʸڤޤäƤСʣϻȤʤ */
for (; itr && (itr->type == MW_COMPOUND_HEAD || itr->type == MW_COMPOUND); itr = itr->mw2) {
struct meta_word* mw1 = itr->mw1;
if (!border_check(mw1, from, border)) {
mw->can_use = ng;
break;
}
}
}
break;
case MW_CHECK_OCHAIRE:
{
struct meta_word* mw1;
if (border_check(mw, from, border)) {
for (mw1 = mw; mw1; mw1 = mw1->mw1) {
mw1->can_use = ok;
}
} else {
for (mw1 = mw; mw1; mw1 = mw1->mw1) {
mw1->can_use = ng;
}
}
}
break;
case MW_CHECK_NONE:
break;
default:
printf("try to check unknown type of metaword (%d).\n", mw->type);
}
}
/*
* ƤmetawordˤĤƻѤǤ뤫ɤå
*/
static void
metaword_constraint_check_all(struct splitter_context *sc,
int from, int to,
int border)
{
int i;
struct word_split_info_cache *info;
info = sc->word_split_info;
/* ޤuncheckedˤ */
for (i = from; i < to; i ++) {
struct meta_word *mw;
for (mw = info->cnode[i].mw;
mw; mw = mw->next) {
mw->can_use = unchecked;
}
}
/* ˹줿metawordˤĤƥå */
for (i = from; i < to; i ++) {
struct meta_word *mw;
for (mw = info->cnode[i].mw; mw; mw = mw->next) {
metaword_constraint_check(sc, mw, from, border);
}
}
}
/*
* ʸᶭޡ
*/
void
anthy_eval_border(struct splitter_context *sc, int from, int from2, int to)
{
struct meta_word *mw;
int nr;
/* ʸΤȤΤΤ */
metaword_constraint_check_all(sc, from, to, from2);
/* fromfrom2δ֤Сmeta_word뤫ɤõ
* СfromϤԤʤfrom2Ϥ롣
*/
nr = 0;
for (mw = sc->word_split_info->cnode[from].mw; mw; mw = mw->next) {
if (mw->can_use == ok) {
nr ++;
break;
}
}
if (nr == 0) {
from = from2;
}
/* ʸζꤹ */
anthy_mark_borders(sc, from, to);
}
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