private Code readEmpty(
int opcode,
boolean wideBase,
boolean wideRest,
int offset,
HashMap<Integer, Code.Label> labels)
throws IOException {
switch (opcode) {
case Code.OPCODE_const:
{
int target = readBase(wideBase);
int idx = readRest(wideRest);
Constant c = constantPool[idx];
return Code.Const(target, c);
}
case Code.OPCODE_goto:
{
int target = readTarget(wideRest, offset);
Code.Label lab = findLabel(target, labels);
return Code.Goto(lab.label);
}
case Code.OPCODE_nop:
return Code.Nop;
case Code.OPCODE_returnv:
return Code.Return();
}
throw new RuntimeException("unknown opcode encountered (" + opcode + ")");
}
