public boolean optimizeCharSet(Pchoice p) {
boolean[] map = Cset.newMap(false);
for (int i = 0; i < p.size(); i++) {
Expression e = p.get(i);
if (e instanceof Cbyte) {
map[((Cbyte) e).byteChar] = true;
} else if (e instanceof Cset) {
Cset bmap = (Cset) e;
for (int j = 0; j < bmap.byteMap.length; j++) {
if (bmap.byteMap[j]) {
map[j] = true;
}
}
} else {
return false;
}
}
this.builder.createIcharclass(p, this.builder.jumpFailureJump(), map);
return true;
}
@Override
public Instruction encodePchoice(Pchoice p, Instruction next, Instruction failjump) {
if (!optimizeCharSet(p)) {
BasicBlock fbb = null;
BasicBlock mergebb = new BasicBlock();
this.builder.createIaltstart(p);
this.builder.createIpush(p.get(0));
for (int i = 0; i < p.size(); i++) {
fbb = new BasicBlock();
this.builder.pushFailureJumpPoint(fbb);
this.altInstructionMap.put(p.get(i), this.builder.createIalt(p));
p.get(i).encode(this, next, failjump);
if (i == p.size() - 1) {
this.builder.createIaltend(p, true, i);
} else {
this.builder.createIaltend(p, false, i);
}
this.builder.createIpop(p.get(i));
this.builder.createIjump(p.get(i), mergebb);
this.builder.setInsertPoint(this.builder.popFailureJumpPoint());
if (i != p.size() - 1) {
this.builder.createIsucc(p.get(i + 1));
this.builder.createIpeek(p.get(i + 1));
} else {
this.builder.createIpop(p.get(i));
this.builder.createIaltfin(p);
}
}
this.builder.createIjump(p.get(p.size() - 1), this.builder.jumpFailureJump());
this.builder.setInsertPoint(mergebb);
this.builder.createIaltfin(p);
}
return null;
}