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

Example 6 with FieldDefinition

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

the class PageProcessorCompiler method generateMethodsForLambdaAndTry.

private PreGeneratedExpressions generateMethodsForLambdaAndTry(ClassDefinition containerClassDefinition, CallSiteBinder callSiteBinder, CachedInstanceBinder cachedInstanceBinder, RowExpression projection, String methodPrefix) {
    Set<RowExpression> lambdaAndTryExpressions = ImmutableSet.copyOf(extractLambdaAndTryExpressions(projection));
    ImmutableMap.Builder<CallExpression, MethodDefinition> tryMethodMap = ImmutableMap.builder();
    ImmutableMap.Builder<LambdaDefinitionExpression, FieldDefinition> lambdaFieldMap = ImmutableMap.builder();
    int counter = 0;
    for (RowExpression expression : lambdaAndTryExpressions) {
        if (expression instanceof CallExpression) {
            CallExpression tryExpression = (CallExpression) expression;
            verify(!Signatures.TRY.equals(tryExpression.getSignature().getName()));
            Parameter session = arg("session", ConnectorSession.class);
            List<Parameter> blocks = toBlockParameters(getInputChannels(tryExpression.getArguments()));
            Parameter position = arg("position", int.class);
            BytecodeExpressionVisitor innerExpressionVisitor = new BytecodeExpressionVisitor(callSiteBinder, cachedInstanceBinder, fieldReferenceCompiler(callSiteBinder), metadata.getFunctionRegistry(), new PreGeneratedExpressions(tryMethodMap.build(), lambdaFieldMap.build()));
            List<Parameter> inputParameters = ImmutableList.<Parameter>builder().add(session).addAll(blocks).add(position).build();
            MethodDefinition tryMethod = defineTryMethod(innerExpressionVisitor, containerClassDefinition, methodPrefix + "_try_" + counter, inputParameters, Primitives.wrap(tryExpression.getType().getJavaType()), tryExpression, callSiteBinder);
            tryMethodMap.put(tryExpression, tryMethod);
        } else if (expression instanceof LambdaDefinitionExpression) {
            LambdaDefinitionExpression lambdaExpression = (LambdaDefinitionExpression) expression;
            PreGeneratedExpressions preGeneratedExpressions = new PreGeneratedExpressions(tryMethodMap.build(), lambdaFieldMap.build());
            FieldDefinition methodHandleField = LambdaBytecodeGenerator.preGenerateLambdaExpression(lambdaExpression, methodPrefix + "_lambda_" + counter, containerClassDefinition, preGeneratedExpressions, callSiteBinder, cachedInstanceBinder, metadata.getFunctionRegistry());
            lambdaFieldMap.put(lambdaExpression, methodHandleField);
        } else {
            throw new VerifyException(format("unexpected expression: %s", expression.toString()));
        }
        counter++;
    }
    return new PreGeneratedExpressions(tryMethodMap.build(), lambdaFieldMap.build());
}

Example 7 with FieldDefinition

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

the class LambdaBytecodeGenerator method defineLambdaMethodAndField.

private static FieldDefinition defineLambdaMethodAndField(BytecodeExpressionVisitor innerExpressionVisitor, ClassDefinition classDefinition, String fieldAndMethodName, List<Parameter> inputParameters, LambdaDefinitionExpression lambda) {
    Class<?> returnType = Primitives.wrap(lambda.getBody().getType().getJavaType());
    MethodDefinition method = classDefinition.declareMethod(a(PUBLIC), fieldAndMethodName, type(returnType), inputParameters);
    Scope scope = method.getScope();
    Variable wasNull = scope.declareVariable(boolean.class, "wasNull");
    BytecodeNode compiledBody = lambda.getBody().accept(innerExpressionVisitor, scope);
    method.getBody().putVariable(wasNull, false).append(compiledBody).append(boxPrimitiveIfNecessary(scope, returnType)).ret(returnType);
    FieldDefinition methodHandleField = classDefinition.declareField(a(PRIVATE, STATIC, FINAL), fieldAndMethodName, type(MethodHandle.class));
    classDefinition.getClassInitializer().getBody().append(setStatic(methodHandleField, invokeStatic(Reflection.class, "methodHandle", MethodHandle.class, constantClass(classDefinition.getType()), constantString(fieldAndMethodName), newArray(type(Class[].class), inputParameters.stream().map(Parameter::getType).map(BytecodeExpressions::constantClass).collect(toImmutableList())))));
    return methodHandleField;
}

Example 8 with FieldDefinition

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

the class PageProcessorCompiler method generateConstructor.

private static void generateConstructor(ClassDefinition classDefinition, CachedInstanceBinder cachedInstanceBinder, int projectionCount) {
    MethodDefinition constructorDefinition = classDefinition.declareConstructor(a(PUBLIC));
    FieldDefinition inputDictionaries = classDefinition.declareField(a(PRIVATE, FINAL), "inputDictionaries", Block[].class);
    FieldDefinition outputDictionaries = classDefinition.declareField(a(PRIVATE, FINAL), "outputDictionaries", Block[].class);
    FieldDefinition inputFilterDictionary = classDefinition.declareField(a(PRIVATE), "inputFilterDictionary", Block.class);
    FieldDefinition filterResult = classDefinition.declareField(a(PRIVATE), "filterResult", boolean[].class);
    BytecodeBlock body = constructorDefinition.getBody();
    Variable thisVariable = constructorDefinition.getThis();
    body.comment("super();").append(thisVariable).invokeConstructor(Object.class);
    body.append(thisVariable.setField(inputDictionaries, newArray(type(Block[].class), projectionCount)));
    body.append(thisVariable.setField(outputDictionaries, newArray(type(Block[].class), projectionCount)));
    body.append(thisVariable.setField(inputFilterDictionary, constantNull(Block.class)));
    body.append(thisVariable.setField(filterResult, constantNull(boolean[].class)));
    cachedInstanceBinder.generateInitializations(thisVariable, body);
    body.ret();
}

Example 9 with FieldDefinition

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

the class CursorProcessorCompiler method generateMethodsForLambdaAndTry.

private PreGeneratedExpressions generateMethodsForLambdaAndTry(ClassDefinition containerClassDefinition, CallSiteBinder callSiteBinder, CachedInstanceBinder cachedInstanceBinder, RowExpression projection, String methodPrefix) {
    Set<RowExpression> lambdaAndTryExpressions = ImmutableSet.copyOf(extractLambdaAndTryExpressions(projection));
    ImmutableMap.Builder<CallExpression, MethodDefinition> tryMethodMap = ImmutableMap.builder();
    ImmutableMap.Builder<LambdaDefinitionExpression, FieldDefinition> lambdaFieldMap = ImmutableMap.builder();
    int counter = 0;
    for (RowExpression expression : lambdaAndTryExpressions) {
        if (expression instanceof CallExpression) {
            CallExpression tryExpression = (CallExpression) expression;
            verify(!Signatures.TRY.equals(tryExpression.getSignature().getName()));
            Parameter session = arg("session", ConnectorSession.class);
            Parameter cursor = arg("cursor", RecordCursor.class);
            List<Parameter> inputParameters = ImmutableList.<Parameter>builder().add(session).add(cursor).build();
            BytecodeExpressionVisitor innerExpressionVisitor = new BytecodeExpressionVisitor(callSiteBinder, cachedInstanceBinder, fieldReferenceCompiler(cursor), metadata.getFunctionRegistry(), new PreGeneratedExpressions(tryMethodMap.build(), lambdaFieldMap.build()));
            MethodDefinition tryMethod = defineTryMethod(innerExpressionVisitor, containerClassDefinition, methodPrefix + "_try_" + counter, inputParameters, Primitives.wrap(tryExpression.getType().getJavaType()), tryExpression, callSiteBinder);
            tryMethodMap.put(tryExpression, tryMethod);
        } else if (expression instanceof LambdaDefinitionExpression) {
            LambdaDefinitionExpression lambdaExpression = (LambdaDefinitionExpression) expression;
            String fieldName = methodPrefix + "_lambda_" + counter;
            PreGeneratedExpressions preGeneratedExpressions = new PreGeneratedExpressions(tryMethodMap.build(), lambdaFieldMap.build());
            FieldDefinition methodHandleField = LambdaBytecodeGenerator.preGenerateLambdaExpression(lambdaExpression, fieldName, containerClassDefinition, preGeneratedExpressions, callSiteBinder, cachedInstanceBinder, metadata.getFunctionRegistry());
            lambdaFieldMap.put(lambdaExpression, methodHandleField);
        } else {
            throw new VerifyException(format("unexpected expression: %s", expression.toString()));
        }
        counter++;
    }
    return new PreGeneratedExpressions(tryMethodMap.build(), lambdaFieldMap.build());
}

Example 10 with FieldDefinition

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

the class BytecodeGeneratorContext method generateCall.

/**
     * Generates a function call with null handling, automatic binding of session parameter, etc.
     */
public BytecodeNode generateCall(String name, ScalarFunctionImplementation function, List<BytecodeNode> arguments) {
    Binding binding = callSiteBinder.bind(function.getMethodHandle());
    Optional<BytecodeNode> instance = Optional.empty();
    if (function.getInstanceFactory().isPresent()) {
        FieldDefinition field = cachedInstanceBinder.getCachedInstance(function.getInstanceFactory().get());
        instance = Optional.of(scope.getThis().getField(field));
    }
    return generateInvocation(scope, name, function, instance, arguments, binding);
}