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

Example 26 with MethodDefinition

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

the class JoinCompiler method generateHashRowMethod.

private static void generateHashRowMethod(ClassDefinition classDefinition, CallSiteBinder callSiteBinder, List<Type> joinChannelTypes) {
    Parameter position = arg("position", int.class);
    Parameter page = arg("blocks", Page.class);
    MethodDefinition hashRowMethod = classDefinition.declareMethod(a(PUBLIC), "hashRow", type(long.class), position, page);
    Variable resultVariable = hashRowMethod.getScope().declareVariable(long.class, "result");
    hashRowMethod.getBody().push(0L).putVariable(resultVariable);
    for (int index = 0; index < joinChannelTypes.size(); index++) {
        BytecodeExpression type = constantType(callSiteBinder, joinChannelTypes.get(index));
        BytecodeExpression block = page.invoke("getBlock", Block.class, constantInt(index));
        hashRowMethod.getBody().getVariable(resultVariable).push(31L).append(OpCode.LMUL).append(typeHashCode(type, block, position)).append(OpCode.LADD).putVariable(resultVariable);
    }
    hashRowMethod.getBody().getVariable(resultVariable).retLong();
}

Example 27 with MethodDefinition

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

the class JoinCompiler method generatePositionEqualsPositionMethod.

private static void generatePositionEqualsPositionMethod(ClassDefinition classDefinition, CallSiteBinder callSiteBinder, List<Type> joinChannelTypes, List<FieldDefinition> joinChannelFields, boolean ignoreNulls) {
    Parameter leftBlockIndex = arg("leftBlockIndex", int.class);
    Parameter leftBlockPosition = arg("leftBlockPosition", int.class);
    Parameter rightBlockIndex = arg("rightBlockIndex", int.class);
    Parameter rightBlockPosition = arg("rightBlockPosition", int.class);
    MethodDefinition positionEqualsPositionMethod = classDefinition.declareMethod(a(PUBLIC), ignoreNulls ? "positionEqualsPositionIgnoreNulls" : "positionEqualsPosition", type(boolean.class), leftBlockIndex, leftBlockPosition, rightBlockIndex, rightBlockPosition);
    Variable thisVariable = positionEqualsPositionMethod.getThis();
    for (int index = 0; index < joinChannelTypes.size(); index++) {
        BytecodeExpression type = constantType(callSiteBinder, joinChannelTypes.get(index));
        BytecodeExpression leftBlock = thisVariable.getField(joinChannelFields.get(index)).invoke("get", Object.class, leftBlockIndex).cast(Block.class);
        BytecodeExpression rightBlock = thisVariable.getField(joinChannelFields.get(index)).invoke("get", Object.class, rightBlockIndex).cast(Block.class);
        BytecodeNode equalityCondition;
        if (ignoreNulls) {
            equalityCondition = typeEqualsIgnoreNulls(type, leftBlock, leftBlockPosition, rightBlock, rightBlockPosition);
        } else {
            equalityCondition = typeEquals(type, leftBlock, leftBlockPosition, rightBlock, rightBlockPosition);
        }
        LabelNode checkNextField = new LabelNode("checkNextField");
        positionEqualsPositionMethod.getBody().append(equalityCondition).ifTrueGoto(checkNextField).push(false).retBoolean().visitLabel(checkNextField);
    }
    positionEqualsPositionMethod.getBody().push(true).retInt();
}

Example 28 with MethodDefinition

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

the class JoinFilterFunctionCompiler method generateMethodsForLambdaAndTry.

private PreGeneratedExpressions generateMethodsForLambdaAndTry(ClassDefinition containerClassDefinition, CallSiteBinder callSiteBinder, CachedInstanceBinder cachedInstanceBinder, int leftBlocksSize, RowExpression filter) {
    Set<RowExpression> lambdaAndTryExpressions = ImmutableSet.copyOf(extractLambdaAndTryExpressions(filter));
    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 leftPosition = arg("leftPosition", int.class);
            Parameter leftBlocks = arg("leftBlocks", Block[].class);
            Parameter rightPosition = arg("rightPosition", int.class);
            Parameter rightBlocks = arg("rightBlocks", Block[].class);
            BytecodeExpressionVisitor innerExpressionVisitor = new BytecodeExpressionVisitor(callSiteBinder, cachedInstanceBinder, fieldReferenceCompiler(callSiteBinder, leftPosition, leftBlocks, rightPosition, rightBlocks, leftBlocksSize), metadata.getFunctionRegistry(), new PreGeneratedExpressions(tryMethodMap.build(), lambdaFieldMap.build()));
            List<Parameter> inputParameters = ImmutableList.<Parameter>builder().add(session).add(leftPosition).add(leftBlocks).add(rightPosition).add(rightBlocks).build();
            MethodDefinition tryMethod = defineTryMethod(innerExpressionVisitor, containerClassDefinition, "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, "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 29 with MethodDefinition

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

the class JoinFilterFunctionCompiler method generateConstructor.

private static void generateConstructor(ClassDefinition classDefinition, FieldDefinition sessionField, CachedInstanceBinder cachedInstanceBinder) {
    Parameter sessionParameter = arg("session", ConnectorSession.class);
    MethodDefinition constructorDefinition = classDefinition.declareConstructor(a(PUBLIC), sessionParameter);
    BytecodeBlock body = constructorDefinition.getBody();
    Variable thisVariable = constructorDefinition.getThis();
    body.comment("super();").append(thisVariable).invokeConstructor(Object.class);
    body.append(thisVariable.setField(sessionField, sessionParameter));
    cachedInstanceBinder.generateInitializations(thisVariable, body);
    body.ret();
}

Example 30 with MethodDefinition

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

the class JoinFilterFunctionCompiler method generateFilterMethod.

private void generateFilterMethod(ClassDefinition classDefinition, CallSiteBinder callSiteBinder, CachedInstanceBinder cachedInstanceBinder, RowExpression filter, int leftBlocksSize, FieldDefinition sessionField) {
    PreGeneratedExpressions preGeneratedExpressions = generateMethodsForLambdaAndTry(classDefinition, callSiteBinder, cachedInstanceBinder, leftBlocksSize, filter);
    // int leftPosition, Block[] leftBlocks, int rightPosition, Block[] rightBlocks
    Parameter leftPosition = arg("leftPosition", int.class);
    Parameter leftBlocks = arg("leftBlocks", Block[].class);
    Parameter rightPosition = arg("rightPosition", int.class);
    Parameter rightBlocks = arg("rightBlocks", Block[].class);
    MethodDefinition method = classDefinition.declareMethod(a(PUBLIC), "filter", type(boolean.class), ImmutableList.<Parameter>builder().add(leftPosition).add(leftBlocks).add(rightPosition).add(rightBlocks).build());
    method.comment("filter: %s", filter.toString());
    BytecodeBlock body = method.getBody();
    Scope scope = method.getScope();
    Variable wasNullVariable = scope.declareVariable("wasNull", body, constantFalse());
    scope.declareVariable("session", body, method.getThis().getField(sessionField));
    BytecodeExpressionVisitor visitor = new BytecodeExpressionVisitor(callSiteBinder, cachedInstanceBinder, fieldReferenceCompiler(callSiteBinder, leftPosition, leftBlocks, rightPosition, rightBlocks, leftBlocksSize), metadata.getFunctionRegistry(), preGeneratedExpressions);
    BytecodeNode visitorBody = filter.accept(visitor, scope);
    Variable result = scope.declareVariable(boolean.class, "result");
    body.append(visitorBody).putVariable(result).append(new IfStatement().condition(wasNullVariable).ifTrue(constantFalse().ret()).ifFalse(result.ret()));
}