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

Example 36 with ClassDefinition

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

the class PageFunctionCompiler method defineFilterClass.

private ClassDefinition defineFilterClass(SqlFunctionProperties sqlFunctionProperties, Map<SqlFunctionId, SqlInvokedFunction> sessionFunctions, RowExpression filter, InputChannels inputChannels, CallSiteBinder callSiteBinder, boolean isOptimizeCommonSubExpression, Optional<String> classNameSuffix) {
    ClassDefinition classDefinition = new ClassDefinition(a(PUBLIC, FINAL), generateFilterClassName(classNameSuffix), type(Object.class), type(PageFilter.class));
    CachedInstanceBinder cachedInstanceBinder = new CachedInstanceBinder(classDefinition, callSiteBinder);
    Map<LambdaDefinitionExpression, CompiledLambda> compiledLambdaMap = generateMethodsForLambda(classDefinition, callSiteBinder, cachedInstanceBinder, filter, metadata, sqlFunctionProperties, sessionFunctions);
    // cse
    Map<VariableReferenceExpression, CommonSubExpressionFields> cseFields = ImmutableMap.of();
    RowExpressionCompiler compiler = new RowExpressionCompiler(classDefinition, callSiteBinder, cachedInstanceBinder, new FieldAndVariableReferenceCompiler(callSiteBinder, cseFields), metadata, sqlFunctionProperties, sessionFunctions, compiledLambdaMap);
    if (isOptimizeCommonSubExpression) {
        Map<Integer, Map<RowExpression, VariableReferenceExpression>> commonSubExpressionsByLevel = collectCSEByLevel(filter);
        if (!commonSubExpressionsByLevel.isEmpty()) {
            cseFields = declareCommonSubExpressionFields(classDefinition, commonSubExpressionsByLevel);
            compiler = new RowExpressionCompiler(classDefinition, callSiteBinder, cachedInstanceBinder, new FieldAndVariableReferenceCompiler(callSiteBinder, cseFields), metadata, sqlFunctionProperties, sessionFunctions, compiledLambdaMap);
            generateCommonSubExpressionMethods(classDefinition, compiler, commonSubExpressionsByLevel, cseFields);
            Map<RowExpression, VariableReferenceExpression> commonSubExpressions = commonSubExpressionsByLevel.values().stream().flatMap(m -> m.entrySet().stream()).collect(toImmutableMap(Map.Entry::getKey, Map.Entry::getValue));
            filter = rewriteExpressionWithCSE(filter, commonSubExpressions);
            if (log.isDebugEnabled()) {
                log.debug("Extracted %d common sub-expressions", commonSubExpressions.size());
                commonSubExpressions.entrySet().forEach(entry -> log.debug("\t%s = %s", entry.getValue(), entry.getKey()));
                log.debug("Rewrote filter: %s", filter);
            }
        }
    }
    generateFilterMethod(classDefinition, compiler, filter, cseFields);
    FieldDefinition selectedPositions = classDefinition.declareField(a(PRIVATE), "selectedPositions", boolean[].class);
    generatePageFilterMethod(classDefinition, selectedPositions);
    // isDeterministic
    classDefinition.declareMethod(a(PUBLIC), "isDeterministic", type(boolean.class)).getBody().append(constantBoolean(determinismEvaluator.isDeterministic(filter))).retBoolean();
    // getInputChannels
    classDefinition.declareMethod(a(PUBLIC), "getInputChannels", type(InputChannels.class)).getBody().append(invoke(callSiteBinder.bind(inputChannels, InputChannels.class), "getInputChannels")).retObject();
    // toString
    String toStringResult = toStringHelper(classDefinition.getType().getJavaClassName()).add("filter", filter).toString();
    classDefinition.declareMethod(a(PUBLIC), "toString", type(String.class)).getBody().append(invoke(callSiteBinder.bind(toStringResult, String.class), "toString")).retObject();
    // constructor
    MethodDefinition constructorDefinition = classDefinition.declareConstructor(a(PUBLIC));
    BytecodeBlock body = constructorDefinition.getBody();
    Variable thisVariable = constructorDefinition.getThis();
    body.comment("super();").append(thisVariable).invokeConstructor(Object.class).append(thisVariable.setField(selectedPositions, newArray(type(boolean[].class), 0)));
    initializeCommonSubExpressionFields(cseFields.values(), thisVariable, body);
    cachedInstanceBinder.generateInitializations(thisVariable, body);
    body.ret();
    return classDefinition;
}

Example 37 with ClassDefinition

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

the class RowExpressionPredicateCompiler method definePredicateClass.

private ClassDefinition definePredicateClass(SqlFunctionProperties sqlFunctionProperties, Map<SqlFunctionId, SqlInvokedFunction> sessionFunctions, RowExpression predicate, int[] inputChannels, CallSiteBinder callSiteBinder) {
    ClassDefinition classDefinition = new ClassDefinition(a(PUBLIC, FINAL), makeClassName(Predicate.class.getSimpleName(), Optional.empty()), type(Object.class), type(Predicate.class));
    CachedInstanceBinder cachedInstanceBinder = new CachedInstanceBinder(classDefinition, callSiteBinder);
    generatePredicateMethod(sqlFunctionProperties, sessionFunctions, classDefinition, callSiteBinder, cachedInstanceBinder, predicate);
    // getInputChannels
    classDefinition.declareMethod(a(PUBLIC), "getInputChannels", type(int[].class)).getBody().append(invoke(callSiteBinder.bind(inputChannels, int[].class), "getInputChannels")).retObject();
    // constructor
    generateConstructor(classDefinition, cachedInstanceBinder);
    return classDefinition;
}

Example 38 with ClassDefinition

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

the class VarArgsToArrayAdapterGenerator method generateVarArgsToArrayAdapter.

public static VarArgMethodHandle generateVarArgsToArrayAdapter(Class<?> returnType, Class<?> javaType, int argsLength, MethodHandle function) {
    requireNonNull(returnType, "returnType is null");
    requireNonNull(javaType, "javaType is null");
    requireNonNull(function, "function is null");
    checkCondition(argsLength <= 254, NOT_SUPPORTED, "Too many arguments for vararg function");
    MethodType methodType = function.type();
    Class<?> javaArrayType = toArrayClass(javaType);
    checkArgument(methodType.returnType() == returnType, "returnType does not match");
    checkArgument(methodType.parameterList().equals(ImmutableList.of(javaArrayType)), "parameter types do not match");
    CallSiteBinder callSiteBinder = new CallSiteBinder();
    ClassDefinition classDefinition = new ClassDefinition(a(PUBLIC, FINAL), makeClassName("VarArgsToListAdapter"), type(Object.class));
    classDefinition.declareDefaultConstructor(a(PRIVATE));
    // generate adapter method
    ImmutableList.Builder<Parameter> parameterListBuilder = ImmutableList.builder();
    for (int i = 0; i < argsLength; i++) {
        parameterListBuilder.add(arg("input_" + i, javaType));
    }
    ImmutableList<Parameter> parameterList = parameterListBuilder.build();
    MethodDefinition methodDefinition = classDefinition.declareMethod(a(PUBLIC, STATIC), "varArgsToArray", type(returnType), parameterList);
    BytecodeBlock body = methodDefinition.getBody();
    body.append(loadConstant(callSiteBinder, function, MethodHandle.class).invoke("invokeExact", returnType, BytecodeExpressions.newArray(ParameterizedType.type(javaArrayType), parameterList)).ret());
    // define class
    Class<?> generatedClass = defineClass(classDefinition, Object.class, callSiteBinder.getBindings(), VarArgsToArrayAdapterGenerator.class.getClassLoader());
    return new VarArgMethodHandle(Reflection.methodHandle(generatedClass, "varArgsToArray", ImmutableList.builder().addAll(nCopies(argsLength, javaType)).build().toArray(new Class<?>[argsLength])));
}

Example 39 with ClassDefinition

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

the class LambdaBytecodeGenerator method generateMethodsForLambda.

private static Map<LambdaDefinitionExpression, CompiledLambda> generateMethodsForLambda(ClassDefinition containerClassDefinition, CallSiteBinder callSiteBinder, CachedInstanceBinder cachedInstanceBinder, List<RowExpression> expressions, Metadata metadata, SqlFunctionProperties sqlFunctionProperties, Map<SqlFunctionId, SqlInvokedFunction> sessionFunctions, String methodNamePrefix, Set<LambdaDefinitionExpression> existingCompiledLambdas) {
    Set<LambdaDefinitionExpression> lambdaExpressions = expressions.stream().map(LambdaExpressionExtractor::extractLambdaExpressions).flatMap(List::stream).filter(lambda -> !existingCompiledLambdas.contains(lambda)).collect(toImmutableSet());
    ImmutableMap.Builder<LambdaDefinitionExpression, CompiledLambda> compiledLambdaMap = ImmutableMap.builder();
    int counter = existingCompiledLambdas.size();
    for (LambdaDefinitionExpression lambdaExpression : lambdaExpressions) {
        CompiledLambda compiledLambda = LambdaBytecodeGenerator.preGenerateLambdaExpression(lambdaExpression, methodNamePrefix + "lambda_" + counter, containerClassDefinition, compiledLambdaMap.build(), callSiteBinder, cachedInstanceBinder, metadata, sqlFunctionProperties, sessionFunctions);
        compiledLambdaMap.put(lambdaExpression, compiledLambda);
        counter++;
    }
    return compiledLambdaMap.build();
}

Example 40 with ClassDefinition

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

the class LambdaBytecodeGenerator method compileLambdaProvider.

public static Class<? extends LambdaProvider> compileLambdaProvider(LambdaDefinitionExpression lambdaExpression, Metadata metadata, SqlFunctionProperties sqlFunctionProperties, Map<SqlFunctionId, SqlInvokedFunction> sessionFunctions, Class lambdaInterface) {
    ClassDefinition lambdaProviderClassDefinition = new ClassDefinition(a(PUBLIC, Access.FINAL), makeClassName("LambdaProvider"), type(Object.class), type(LambdaProvider.class));
    FieldDefinition propertiesField = lambdaProviderClassDefinition.declareField(a(PRIVATE), "properties", SqlFunctionProperties.class);
    CallSiteBinder callSiteBinder = new CallSiteBinder();
    CachedInstanceBinder cachedInstanceBinder = new CachedInstanceBinder(lambdaProviderClassDefinition, callSiteBinder);
    Map<LambdaDefinitionExpression, CompiledLambda> compiledLambdaMap = generateMethodsForLambda(lambdaProviderClassDefinition, callSiteBinder, cachedInstanceBinder, lambdaExpression, metadata, sqlFunctionProperties, sessionFunctions);
    MethodDefinition method = lambdaProviderClassDefinition.declareMethod(a(PUBLIC), "getLambda", type(Object.class), ImmutableList.of());
    Scope scope = method.getScope();
    BytecodeBlock body = method.getBody();
    scope.declareVariable("wasNull", body, constantFalse());
    scope.declareVariable("properties", body, method.getThis().getField(propertiesField));
    RowExpressionCompiler rowExpressionCompiler = new RowExpressionCompiler(lambdaProviderClassDefinition, callSiteBinder, cachedInstanceBinder, variableReferenceCompiler(ImmutableMap.of()), metadata, sqlFunctionProperties, sessionFunctions, compiledLambdaMap);
    BytecodeGeneratorContext generatorContext = new BytecodeGeneratorContext(rowExpressionCompiler, scope, callSiteBinder, cachedInstanceBinder, metadata.getFunctionAndTypeManager());
    body.append(generateLambda(generatorContext, ImmutableList.of(), compiledLambdaMap.get(lambdaExpression), lambdaInterface)).retObject();
    // constructor
    Parameter propertiesParameter = arg("properties", SqlFunctionProperties.class);
    MethodDefinition constructorDefinition = lambdaProviderClassDefinition.declareConstructor(a(PUBLIC), propertiesParameter);
    BytecodeBlock constructorBody = constructorDefinition.getBody();
    Variable constructorThisVariable = constructorDefinition.getThis();
    constructorBody.comment("super();").append(constructorThisVariable).invokeConstructor(Object.class).append(constructorThisVariable.setField(propertiesField, propertiesParameter));
    cachedInstanceBinder.generateInitializations(constructorThisVariable, constructorBody);
    constructorBody.ret();
    return defineClass(lambdaProviderClassDefinition, LambdaProvider.class, callSiteBinder.getBindings(), AccumulatorCompiler.class.getClassLoader());
}