Examples with FieldInsnNode org.mvel2.asm.tree.FieldInsnNode used on opensource projects

Example 1 with FieldInsnNode

use of org.mvel2.asm.tree.FieldInsnNode in project mvel by mvel.

the class BasicVerifier method binaryOperation.

@Override
public BasicValue binaryOperation(final AbstractInsnNode insn, final BasicValue value1, final BasicValue value2) throws AnalyzerException {
    BasicValue expected1;
    BasicValue expected2;
    switch(insn.getOpcode()) {
        case IALOAD:
            expected1 = newValue(Type.getType("[I"));
            expected2 = BasicValue.INT_VALUE;
            break;
        case BALOAD:
            if (isSubTypeOf(value1, newValue(Type.getType("[Z")))) {
                expected1 = newValue(Type.getType("[Z"));
            } else {
                expected1 = newValue(Type.getType("[B"));
            }
            expected2 = BasicValue.INT_VALUE;
            break;
        case CALOAD:
            expected1 = newValue(Type.getType("[C"));
            expected2 = BasicValue.INT_VALUE;
            break;
        case SALOAD:
            expected1 = newValue(Type.getType("[S"));
            expected2 = BasicValue.INT_VALUE;
            break;
        case LALOAD:
            expected1 = newValue(Type.getType("[J"));
            expected2 = BasicValue.INT_VALUE;
            break;
        case FALOAD:
            expected1 = newValue(Type.getType("[F"));
            expected2 = BasicValue.INT_VALUE;
            break;
        case DALOAD:
            expected1 = newValue(Type.getType("[D"));
            expected2 = BasicValue.INT_VALUE;
            break;
        case AALOAD:
            expected1 = newValue(Type.getType("[Ljava/lang/Object;"));
            expected2 = BasicValue.INT_VALUE;
            break;
        case IADD:
        case ISUB:
        case IMUL:
        case IDIV:
        case IREM:
        case ISHL:
        case ISHR:
        case IUSHR:
        case IAND:
        case IOR:
        case IXOR:
        case IF_ICMPEQ:
        case IF_ICMPNE:
        case IF_ICMPLT:
        case IF_ICMPGE:
        case IF_ICMPGT:
        case IF_ICMPLE:
            expected1 = BasicValue.INT_VALUE;
            expected2 = BasicValue.INT_VALUE;
            break;
        case FADD:
        case FSUB:
        case FMUL:
        case FDIV:
        case FREM:
        case FCMPL:
        case FCMPG:
            expected1 = BasicValue.FLOAT_VALUE;
            expected2 = BasicValue.FLOAT_VALUE;
            break;
        case LADD:
        case LSUB:
        case LMUL:
        case LDIV:
        case LREM:
        case LAND:
        case LOR:
        case LXOR:
        case LCMP:
            expected1 = BasicValue.LONG_VALUE;
            expected2 = BasicValue.LONG_VALUE;
            break;
        case LSHL:
        case LSHR:
        case LUSHR:
            expected1 = BasicValue.LONG_VALUE;
            expected2 = BasicValue.INT_VALUE;
            break;
        case DADD:
        case DSUB:
        case DMUL:
        case DDIV:
        case DREM:
        case DCMPL:
        case DCMPG:
            expected1 = BasicValue.DOUBLE_VALUE;
            expected2 = BasicValue.DOUBLE_VALUE;
            break;
        case IF_ACMPEQ:
        case IF_ACMPNE:
            expected1 = BasicValue.REFERENCE_VALUE;
            expected2 = BasicValue.REFERENCE_VALUE;
            break;
        case PUTFIELD:
            FieldInsnNode fin = (FieldInsnNode) insn;
            expected1 = newValue(Type.getObjectType(fin.owner));
            expected2 = newValue(Type.getType(fin.desc));
            break;
        default:
            throw new Error("Internal error.");
    }
    if (!isSubTypeOf(value1, expected1)) {
        throw new AnalyzerException(insn, "First argument", expected1, value1);
    } else if (!isSubTypeOf(value2, expected2)) {
        throw new AnalyzerException(insn, "Second argument", expected2, value2);
    }
    if (insn.getOpcode() == AALOAD) {
        return getElementValue(value1);
    } else {
        return super.binaryOperation(insn, value1, value2);
    }
}