private ConstantValue evaluateBinaryExpr(
Expression lhs, Expression rhs, Type resultType, ArithmeticBinaryOperation operation) {
// Evaluate subexpressions
ConstantValue valueLhs = lhs.accept(this, null);
ConstantValue valueRhs = rhs.accept(this, null);
// Convert to type implied by usual arithmetic conversions
final ArithmeticType commonType =
TypeUtils.doUsualArithmeticConversions(
(ArithmeticType) lhs.getType().get(), (ArithmeticType) rhs.getType().get());
final ConstantType commonConstantType = typeFactory.newConstantType(commonType);
final ConstantType resultConstantType = typeFactory.newConstantType(resultType);
valueLhs = valueLhs.castTo(commonConstantType);
valueRhs = valueRhs.castTo(commonConstantType);
// Perform the operation
switch (operation) {
case ADDITION:
return valueLhs.add(valueRhs);
case SUBTRACTION:
return valueLhs.subtract(valueRhs);
case MULTIPLICATION:
return valueLhs.multiply(valueRhs);
case DIVISION:
return valueLhs.divide(valueRhs);
case REMAINDER:
return valueLhs.remainder(valueRhs);
case BITWISE_AND:
return valueLhs.bitwiseAnd(valueRhs);
case BITWISE_OR:
return valueLhs.bitwiseOr(valueRhs);
case BITWISE_XOR:
return valueLhs.bitwiseXor(valueRhs);
case LESS:
return valueLhs.less(valueRhs).castTo(resultConstantType);
case LESS_OR_EQUAL:
return valueLhs.lessOrEqual(valueRhs).castTo(resultConstantType);
case GREATER:
return valueLhs.greater(valueRhs).castTo(resultConstantType);
case GREATER_OR_EQUAL:
return valueLhs.greaterOrEqual(valueRhs).castTo(resultConstantType);
case EQUAL:
return valueLhs.equalTo(valueRhs).castTo(resultConstantType);
case NOT_EQUAL:
return valueLhs.notEqualTo(valueRhs).castTo(resultConstantType);
default:
throw new RuntimeException("unexpected arithmetic binary operation '" + operation + "'");
}
}
