Examples with BytecodeBlock com.facebook.presto.bytecode.BytecodeBlock used on opensource projects

Example 11 with BytecodeBlock

use of com.facebook.presto.bytecode.BytecodeBlock in project presto by prestodb.

the class AccumulatorCompiler method generateGroupedEvaluateFinal.

private static void generateGroupedEvaluateFinal(ClassDefinition definition, FieldDefinition stateField, MethodHandle outputFunction, CallSiteBinder callSiteBinder) {
    Parameter groupId = arg("groupId", int.class);
    Parameter out = arg("out", BlockBuilder.class);
    MethodDefinition method = definition.declareMethod(a(PUBLIC), "evaluateFinal", type(void.class), groupId, out);
    BytecodeBlock body = method.getBody();
    Variable thisVariable = method.getThis();
    BytecodeExpression state = thisVariable.getField(stateField);
    body.append(state.invoke("setGroupId", void.class, groupId.cast(long.class)));
    body.comment("output(state, out)");
    body.append(state);
    body.append(out);
    body.append(invoke(callSiteBinder.bind(outputFunction), "output"));
    body.ret();
}

Example 12 with BytecodeBlock

use of com.facebook.presto.bytecode.BytecodeBlock in project presto by prestodb.

the class AccumulatorCompiler method generateEvaluateFinal.

private static void generateEvaluateFinal(ClassDefinition definition, FieldDefinition stateField, MethodHandle outputFunction, CallSiteBinder callSiteBinder) {
    Parameter out = arg("out", BlockBuilder.class);
    MethodDefinition method = definition.declareMethod(a(PUBLIC), "evaluateFinal", type(void.class), out);
    BytecodeBlock body = method.getBody();
    Variable thisVariable = method.getThis();
    BytecodeExpression state = thisVariable.getField(stateField);
    body.comment("output(state, out)");
    body.append(state);
    body.append(out);
    body.append(invoke(callSiteBinder.bind(outputFunction), "output"));
    body.ret();
}

Example 13 with BytecodeBlock

use of com.facebook.presto.bytecode.BytecodeBlock in project presto by prestodb.

the class ConcatFunction method generateConcat.

private static Class<?> generateConcat(int arity) {
    ClassDefinition definition = new ClassDefinition(a(PUBLIC, FINAL), CompilerUtils.makeClassName("Concat" + arity + "ScalarFunction"), type(Object.class));
    // Generate constructor
    definition.declareDefaultConstructor(a(PRIVATE));
    // Generate concat()
    List<Parameter> parameters = IntStream.range(0, arity).mapToObj(i -> arg("arg" + i, Slice.class)).collect(toImmutableList());
    MethodDefinition method = definition.declareMethod(a(PUBLIC, STATIC), "concat", type(Slice.class), parameters);
    Scope scope = method.getScope();
    BytecodeBlock body = method.getBody();
    Variable length = scope.declareVariable(int.class, "length");
    body.append(length.set(constantInt(0)));
    for (int i = 0; i < arity; ++i) {
        body.append(length.set(generateCheckedAdd(length, parameters.get(i).invoke("length", int.class))));
    }
    Variable result = scope.declareVariable(Slice.class, "result");
    body.append(result.set(invokeStatic(Slices.class, "allocate", Slice.class, length)));
    Variable position = scope.declareVariable(int.class, "position");
    body.append(position.set(constantInt(0)));
    for (int i = 0; i < arity; ++i) {
        body.append(result.invoke("setBytes", void.class, position, parameters.get(i)));
        body.append(position.set(add(position, parameters.get(i).invoke("length", int.class))));
    }
    body.getVariable(result).retObject();
    return defineClass(definition, Object.class, ImmutableMap.of(), new DynamicClassLoader(ConcatFunction.class.getClassLoader()));
}

Example 14 with BytecodeBlock

use of com.facebook.presto.bytecode.BytecodeBlock in project presto by prestodb.

the class AbstractGreatestLeast method generate.

private Class<?> generate(List<Class<?>> javaTypes, Type type, MethodHandle compareMethod) {
    String javaTypeName = javaTypes.stream().map(Class::getSimpleName).collect(joining());
    ClassDefinition definition = new ClassDefinition(a(PUBLIC, FINAL), CompilerUtils.makeClassName(javaTypeName + "$" + getSignature().getName()), type(Object.class));
    definition.declareDefaultConstructor(a(PRIVATE));
    List<Parameter> parameters = IntStream.range(0, javaTypes.size()).mapToObj(i -> arg("arg" + i, javaTypes.get(i))).collect(toImmutableList());
    MethodDefinition method = definition.declareMethod(a(PUBLIC, STATIC), getSignature().getName(), type(javaTypes.get(0)), parameters);
    Scope scope = method.getScope();
    BytecodeBlock body = method.getBody();
    CallSiteBinder binder = new CallSiteBinder();
    if (type.getTypeSignature().getBase().equals(StandardTypes.DOUBLE)) {
        for (Parameter parameter : parameters) {
            body.append(parameter);
            body.append(invoke(binder.bind(CHECK_NOT_NAN.bindTo(getSignature().getName())), "checkNotNaN"));
        }
    }
    Variable value = scope.declareVariable(javaTypes.get(0), "value");
    body.append(value.set(parameters.get(0)));
    for (int i = 1; i < javaTypes.size(); i++) {
        body.append(new IfStatement().condition(new BytecodeBlock().append(parameters.get(i)).append(value).append(invoke(binder.bind(compareMethod), "compare"))).ifTrue(value.set(parameters.get(i))));
    }
    body.append(value.ret());
    return defineClass(definition, Object.class, binder.getBindings(), new DynamicClassLoader(getClass().getClassLoader()));
}

Example 15 with BytecodeBlock

use of com.facebook.presto.bytecode.BytecodeBlock in project presto by prestodb.

the class ArrayToArrayCast method generateArrayCast.

private static Class<?> generateArrayCast(TypeManager typeManager, Signature elementCastSignature, ScalarFunctionImplementation elementCast) {
    CallSiteBinder binder = new CallSiteBinder();
    ClassDefinition definition = new ClassDefinition(a(PUBLIC, FINAL), CompilerUtils.makeClassName(Joiner.on("$").join("ArrayCast", elementCastSignature.getArgumentTypes().get(0), elementCastSignature.getReturnType())), type(Object.class));
    Parameter session = arg("session", ConnectorSession.class);
    Parameter value = arg("value", Block.class);
    MethodDefinition method = definition.declareMethod(a(PUBLIC, STATIC), "castArray", type(Block.class), session, value);
    Scope scope = method.getScope();
    BytecodeBlock body = method.getBody();
    Variable wasNull = scope.declareVariable(boolean.class, "wasNull");
    body.append(wasNull.set(constantBoolean(false)));
    // cast map elements
    Type fromElementType = typeManager.getType(elementCastSignature.getArgumentTypes().get(0));
    Type toElementType = typeManager.getType(elementCastSignature.getReturnType());
    CachedInstanceBinder cachedInstanceBinder = new CachedInstanceBinder(definition, binder);
    ArrayMapBytecodeExpression newArray = ArrayGeneratorUtils.map(scope, cachedInstanceBinder, fromElementType, toElementType, value, elementCastSignature.getName(), elementCast);
    // return the block
    body.append(newArray.ret());
    MethodDefinition constructorDefinition = definition.declareConstructor(a(PUBLIC));
    BytecodeBlock constructorBody = constructorDefinition.getBody();
    Variable thisVariable = constructorDefinition.getThis();
    constructorBody.comment("super();").append(thisVariable).invokeConstructor(Object.class);
    cachedInstanceBinder.generateInitializations(thisVariable, constructorBody);
    constructorBody.ret();
    return defineClass(definition, Object.class, binder.getBindings(), ArrayToArrayCast.class.getClassLoader());
}