Examples with InputReferenceNode io.prestosql.sql.gen.InputReferenceCompiler.InputReferenceNode used on opensource projects

Example 1 with InputReferenceNode

use of io.prestosql.sql.gen.InputReferenceCompiler.InputReferenceNode in project hetu-core by openlookeng.

the class BytecodeUtils method generateInvocation.

public static BytecodeNode generateInvocation(Scope scope, String name, BuiltInScalarFunctionImplementation function, Optional<BytecodeNode> instance, List<BytecodeNode> arguments, CallSiteBinder binder) {
    LabelNode end = new LabelNode("end");
    BytecodeBlock block = new BytecodeBlock().setDescription("invoke " + name);
    List<Class<?>> stackTypes = new ArrayList<>();
    if (function.getInstanceFactory().isPresent()) {
        checkArgument(instance.isPresent());
    }
    // Index of current parameter in the MethodHandle
    int currentParameterIndex = 0;
    // Index of parameter (without @IsNull) in Presto function
    int realParameterIndex = 0;
    // Go through all the choices in the function and then pick the best one
    List<ScalarImplementationChoice> choices = function.getAllChoices();
    ScalarImplementationChoice bestChoice = null;
    for (ScalarImplementationChoice currentChoice : choices) {
        boolean isValid = true;
        for (int i = 0; i < arguments.size(); i++) {
            if (currentChoice.getArgumentProperty(i).getArgumentType() != VALUE_TYPE) {
                continue;
            }
            if (!(arguments.get(i) instanceof InputReferenceNode) && currentChoice.getArgumentProperty(i).getNullConvention() == NullConvention.BLOCK_AND_POSITION) {
                isValid = false;
                break;
            }
        }
        if (isValid) {
            bestChoice = currentChoice;
        }
    }
    checkState(bestChoice != null, "None of the scalar function implementation choices are valid");
    Binding binding = binder.bind(bestChoice.getMethodHandle());
    MethodType methodType = binding.getType();
    Class<?> returnType = methodType.returnType();
    Class<?> unboxedReturnType = Primitives.unwrap(returnType);
    boolean boundInstance = false;
    while (currentParameterIndex < methodType.parameterArray().length) {
        Class<?> type = methodType.parameterArray()[currentParameterIndex];
        stackTypes.add(type);
        if (bestChoice.getInstanceFactory().isPresent() && !boundInstance) {
            checkState(type.equals(bestChoice.getInstanceFactory().get().type().returnType()), "Mismatched type for instance parameter");
            block.append(instance.get());
            boundInstance = true;
        } else if (type == ConnectorSession.class) {
            block.append(scope.getVariable("session"));
        } else {
            ArgumentProperty argumentProperty = bestChoice.getArgumentProperty(realParameterIndex);
            switch(argumentProperty.getArgumentType()) {
                case VALUE_TYPE:
                    // Apply null convention for value type argument
                    switch(argumentProperty.getNullConvention()) {
                        case RETURN_NULL_ON_NULL:
                            block.append(arguments.get(realParameterIndex));
                            checkArgument(!Primitives.isWrapperType(type), "Non-nullable argument must not be primitive wrapper type");
                            block.append(ifWasNullPopAndGoto(scope, end, unboxedReturnType, Lists.reverse(stackTypes)));
                            break;
                        case USE_NULL_FLAG:
                            block.append(arguments.get(realParameterIndex));
                            block.append(scope.getVariable("wasNull"));
                            block.append(scope.getVariable("wasNull").set(constantFalse()));
                            stackTypes.add(boolean.class);
                            currentParameterIndex++;
                            break;
                        case USE_BOXED_TYPE:
                            block.append(arguments.get(realParameterIndex));
                            block.append(boxPrimitiveIfNecessary(scope, type));
                            block.append(scope.getVariable("wasNull").set(constantFalse()));
                            break;
                        case BLOCK_AND_POSITION:
                            InputReferenceNode inputReferenceNode = (InputReferenceNode) arguments.get(realParameterIndex);
                            block.append(inputReferenceNode.produceBlockAndPosition());
                            stackTypes.add(int.class);
                            currentParameterIndex++;
                            break;
                        default:
                            throw new UnsupportedOperationException(format("Unsupported null convention: %s", argumentProperty.getNullConvention()));
                    }
                    break;
                case FUNCTION_TYPE:
                    block.append(arguments.get(realParameterIndex));
                    break;
                default:
                    throw new UnsupportedOperationException(format("Unsupported argument type: %s", argumentProperty.getArgumentType()));
            }
            realParameterIndex++;
        }
        currentParameterIndex++;
    }
    block.append(invoke(binding, name));
    if (function.isNullable()) {
        block.append(unboxPrimitiveIfNecessary(scope, returnType));
    }
    block.visitLabel(end);
    return block;
}