Java 类org.apache.bcel.generic.FSTORE 实例源码

/** Checks if the constraints of operands of the said instruction(s) are satisfied. */
public void visitFSTORE(FSTORE o){
    int idx = o.getIndex();
    if (idx < 0){
        constraintViolated(o, "Index '"+idx+"' must be non-negative.");
    }
    else{
        int maxminus1 =  max_locals()-1;
        if (idx > maxminus1){
            constraintViolated(o, "Index '"+idx+"' must not be greater than max_locals-1 '"+maxminus1+"'.");
        }
    }
}

void initSpawnTargets(InstructionList il) {
    for (int i = 0; i < idTable.size(); i++) {
        InstructionList storeIns = getStoreIns(i);

        if (storeIns == null) {
            continue;
        }

        if (isArrayStore(storeIns.getStart())) {
            continue;
        }

        Instruction store = storeIns.getStart().getInstruction();

        if (store instanceof LSTORE) {
            il.insert(new LCONST(0));
            il.append(il.getStart(), store);
        } else if (store instanceof ISTORE) {
            il.insert(new ICONST(0));
            il.append(il.getStart(), store);
        } else if (store instanceof FSTORE) {
            il.insert(new FCONST((float) 0.0));
            il.append(il.getStart(), store);
        } else if (store instanceof DSTORE) {
            il.insert(new DCONST(0.0));
            il.append(il.getStart(), store);
        } else if (store instanceof ASTORE) {
            il.insert(new ACONST_NULL());
            il.append(il.getStart(), store);
        } else if (store instanceof PUTFIELD) {
            // no need to init.
        } else if (store instanceof PUTSTATIC) {
            // no need to init.
        } else if (store instanceof ALOAD) {
            // no need to init.
        } else {
            System.err.println("WARNING: Unhandled store instruction in "
                + "initSpawnTargets, opcode = " + store.getOpcode()
                + " ins = " + store);
            // System.exit(1);
        }
    }
}

@SuppressWarnings("unused")
// Called using reflection
private Instruction createInstructionFstore(Element inst) throws IllegalXMLVMException {
    int idx = Integer.parseInt(inst.getAttributeValue("index"));
    return new FSTORE(idx);
}