зеркало из https://github.com/mozilla/pjs.git
71 строка
1.4 KiB
C
71 строка
1.4 KiB
C
char rcsid_burs[] = "$Id: burs.c,v 1.1 1998-12-17 06:36:46 fur%netscape.com Exp $";
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#include <stdio.h> /* for printf */
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#include "b.h"
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static void doLeaf ARGS((Operator));
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static void
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doLeaf(leaf) Operator leaf;
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{
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int new;
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List pl;
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Item_Set ts;
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Item_Set tmp;
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assert(leaf->arity == 0);
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ts = newItem_Set(leaf->table->relevant);
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for (pl = rules; pl; pl = pl->next) {
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Rule p = (Rule) pl->x;
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if (p->pat->op == leaf) {
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if (!ts->virgin[p->lhs->num].rule || p->delta < ts->virgin[p->lhs->num].delta) {
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ts->virgin[p->lhs->num].rule = p;
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ASSIGNCOST(ts->virgin[p->lhs->num].delta, p->delta);
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ts->op = leaf;
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}
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}
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}
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trim(ts);
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zero(ts);
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tmp = encode(globalMap, ts, &new);
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if (new) {
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closure(ts);
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leaf->table->transition[0] = ts;
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addQ(globalQ, ts);
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} else {
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leaf->table->transition[0] = tmp;
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freeItem_Set(ts);
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}
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}
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void
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build()
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{
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int new;
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List ol;
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Item_Set ts;
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globalQ = newQ();
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globalMap = newMapping(GLOBAL_MAP_SIZE);
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ts = newItem_Set(0);
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encode(globalMap, ts, &new);
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ts->closed = ts->virgin;
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addQ(globalQ, ts);
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foreachList((ListFn) doLeaf, leaves);
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debug(debugTables, printf("---initial set of states ---\n"));
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debug(debugTables, dumpMapping(globalMap));
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debug(debugTables, foreachList((ListFn) dumpItem_Set, globalQ->head));
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for (ts = popQ(globalQ); ts; ts = popQ(globalQ)) {
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for (ol = operators; ol; ol = ol->next) {
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Operator op = (Operator) ol->x;
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addToTable(op->table, ts);
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}
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}
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}
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