Package com.facebook.presto.byteCode.control

Examples of com.facebook.presto.byteCode.control.IfStatement

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                    .invokeVirtual(BlockBuilder.class, "appendNull", BlockBuilder.class)
                    .pop();

            projectionMethod.getBody()
                    .comment("if the result was null, appendNull; otherwise append the value")
                    .append(new IfStatement(context, new Block(context).getVariable("wasNull"), nullBlock, notNullBlock))
                    .ret();
        }
        else {
            projectionMethod
                    .getBody()
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            }
            else {
                throw new UnsupportedOperationException("not yet implemented: " + type);
            }

            return new IfStatement(context, isNullCheck, isNull, isNotNull);
        }
        else {
            Block isNullCheck = new Block(context)
                    .setDescription(format("block_%d.get%s()", field, type))
                    .getVariable("block_" + field)
                    .getVariable("position")
                    .invokeInterface(com.facebook.presto.spi.block.Block.class, "isNull", boolean.class, int.class);

            Block isNull = new Block(context)
                    .putVariable("wasNull", true)
                    .pushJavaDefault(javaType);
            if (javaType == boolean.class) {
                Block isNotNull = new Block(context)
                        .getVariable("block_" + field)
                        .getVariable("position")
                        .invokeInterface(com.facebook.presto.spi.block.Block.class, "getBoolean", boolean.class, int.class);
                return new IfStatement(context, isNullCheck, isNull, isNotNull);
            }
            else if (javaType == long.class) {
                Block isNotNull = new Block(context)
                        .getVariable("block_" + field)
                        .getVariable("position")
                        .invokeInterface(com.facebook.presto.spi.block.Block.class, "getLong", long.class, int.class);
                return new IfStatement(context, isNullCheck, isNull, isNotNull);
            }
            else if (javaType == double.class) {
                Block isNotNull = new Block(context)
                        .getVariable("block_" + field)
                        .getVariable("position")
                        .invokeInterface(com.facebook.presto.spi.block.Block.class, "getDouble", double.class, int.class);
                return new IfStatement(context, isNullCheck, isNull, isNotNull);
            }
            else if (javaType == Slice.class) {
                Block isNotNull = new Block(context)
                        .getVariable("block_" + field)
                        .getVariable("position")
                        .invokeInterface(com.facebook.presto.spi.block.Block.class, "getSlice", Slice.class, int.class);
                return new IfStatement(context, isNullCheck, isNull, isNotNull);
            }
            else {
                throw new UnsupportedOperationException("not yet implemented: " + type);
            }
        }
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                .putVariable("wasNull", true)
                .pop(first.getType().getJavaType())
                .pushJavaDefault(first.getType().getJavaType());

        // else return first (which is still on the stack
        block.append(new IfStatement(context, conditionBlock, trueBlock, notMatch));

        return block;
    }
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        Block block = new Block(context)
                .comment("IS DISTINCT FROM")
                .comment("left")
                .append(generator.generate(left))
                .append(new IfStatement(context,
                        new Block(context).getVariable("wasNull"),
                        new Block(context)
                                .pop(leftType.getJavaType())
                                .putVariable("wasNull", false)
                                .comment("right is not null")
                                .append(generator.generate(right))
                                .pop(rightType.getJavaType())
                                .getVariable("wasNull")
                                .invokeStatic(CompilerOperations.class, "not", boolean.class, boolean.class),
                        new Block(context)
                                .comment("right")
                                .append(generator.generate(right))
                                .append(new IfStatement(context,
                                        new Block(context).getVariable("wasNull"),
                                        new Block(context)
                                                .pop(leftType.getJavaType())
                                                .pop(rightType.getJavaType())
                                                .push(true),
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            Block nullBlock = new Block(context)
                    .pop(returnType.getJavaType())
                    .putVariable("wasNull", false)
                    .append(nullValue);

            nullValue = new IfStatement(context, condition, nullBlock, NOP);
        }

        return nullValue;
    }
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            // for huge IN lists, use a Set
            FunctionBinding constant = generatorContext.getBootstrapBinder().bindConstant(constantValues, Set.class);

            switchBlock = new Block(context)
                    .comment("inListSet.contains(<stackValue>)")
                    .append(new IfStatement(context,
                            new Block(context)
                                    .comment("value (+boxing if necessary)")
                                    .dup(javaType)
                                    .append(ByteCodeUtils.boxPrimitive(context, javaType))
                                    .comment("set")
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        if (!stackArgsToPop.isEmpty()) {
            popComment = format("pop(%s)", Joiner.on(", ").join(stackArgsToPop));
        }

        String comment = format("if wasNull then %s", Joiner.on(", ").skipNulls().join(clearComment, popComment, loadDefaultComment, "goto " + label.getLabel()));
        return new IfStatement(context, comment, nullCheck, isNull, NOP);
    }
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                .invokeInterface(BlockBuilder.class, "appendNull", BlockBuilder.class)
                .pop();

        projectionMethod.getBody()
                .comment("if the result was null, appendNull; otherwise append the value")
                .append(new IfStatement(context, new Block(context).getVariable("wasNull"), nullBlock, notNullBlock))
                .ret();

        return projectionType.getJavaType();
    }
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        classDefinition.declareMethod(compilerContext,
                a(PUBLIC),
                "getCurrentJoinPosition",
                type(long.class))
                .getBody()
                .append(new IfStatement(
                        compilerContext,
                        new Block(compilerContext).pushThis().invokeVirtual(classDefinition.getType(), "currentRowContainsNull", type(boolean.class)),
                        new Block(compilerContext).push(-1L).retLong(),
                        null
                ))
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            Block condition = new Block(context)
                    .append(equalsCall)
                    .putVariable("wasNull", false);

            elseValue = new IfStatement(context,
                    "when",
                    condition,
                    generatorContext.generate(result),
                    elseValue);
        }
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Related Classes of com.facebook.presto.byteCode.control.IfStatement

  • com.facebook.presto.byteCode.Block
  • com.facebook.presto.sql.gen.ByteCodeExpressionVisitor
  • com.facebook.presto.sql.gen.ByteCodeUtils
  • com.facebook.presto.sql.gen.CoalesceCodeGenerator
  • com.facebook.presto.sql.gen.CursorProcessorCompiler
  • com.facebook.presto.sql.gen.ExpressionCompiler
  • com.facebook.presto.sql.gen.IfCodeGenerator
  • com.facebook.presto.sql.gen.InCodeGenerator
  • com.facebook.presto.sql.gen.IsDistinctFromCodeGenerator
  • com.facebook.presto.sql.gen.JoinProbeCompiler
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