Examples with BinaryOperation org.apache.sling.scripting.sightly.compiler.expression.nodes.BinaryOperation used on opensource projects

Example 1 with BinaryOperation

use of org.apache.sling.scripting.sightly.compiler.expression.nodes.BinaryOperation in project sling by apache.

the class RepeatPlugin method invoke.

@Override
public PluginInvoke invoke(final Expression expression, final PluginCallInfo callInfo, final CompilerContext compilerContext) {
    return new DefaultPluginInvoke() {

        private String listVariable = compilerContext.generateVariable("collectionVar");

        private String collectionSizeVar = compilerContext.generateVariable("size");

        @Override
        public void beforeElement(PushStream stream, String tagName) {
            stream.write(new VariableBinding.Start(listVariable, expression.getRoot()));
            stream.write(new VariableBinding.Start(collectionSizeVar, new UnaryOperation(UnaryOperator.LENGTH, new Identifier(listVariable))));
            stream.write(new Conditional.Start(collectionSizeVar, true));
            String itemVariable = decodeItemVariable();
            String loopStatusVar = Syntax.itemLoopStatusVariable(itemVariable);
            String indexVariable = compilerContext.generateVariable("index");
            stream.write(new Loop.Start(listVariable, itemVariable, indexVariable));
            stream.write(new VariableBinding.Start(loopStatusVar, buildStatusObj(indexVariable, collectionSizeVar)));
        }

        @Override
        public void afterTagClose(PushStream stream, boolean isSelfClosing) {
            stream.write(NEW_LINE);
        }

        @Override
        public void afterElement(PushStream stream) {
            stream.write(VariableBinding.END);
            stream.write(Loop.END);
            stream.write(Conditional.END);
            stream.write(VariableBinding.END);
            stream.write(VariableBinding.END);
        }

        private String decodeItemVariable() {
            String[] args = callInfo.getArguments();
            if (args.length > 0) {
                return args[0];
            }
            return Syntax.DEFAULT_LIST_ITEM_VAR_NAME;
        }

        private MapLiteral buildStatusObj(String indexVar, String sizeVar) {
            HashMap<String, ExpressionNode> obj = new HashMap<>();
            Identifier indexId = new Identifier(indexVar);
            BinaryOperation firstExpr = new BinaryOperation(BinaryOperator.EQ, indexId, NumericConstant.ZERO);
            BinaryOperation lastExpr = new BinaryOperation(BinaryOperator.EQ, indexId, new BinaryOperation(BinaryOperator.SUB, new Identifier(sizeVar), NumericConstant.ONE));
            obj.put(INDEX, indexId);
            obj.put(COUNT, new BinaryOperation(BinaryOperator.ADD, indexId, NumericConstant.ONE));
            obj.put(FIRST, firstExpr);
            obj.put(MIDDLE, new UnaryOperation(UnaryOperator.NOT, new BinaryOperation(BinaryOperator.OR, firstExpr, lastExpr)));
            obj.put(LAST, lastExpr);
            obj.put(ODD, parityCheck(indexId, NumericConstant.ZERO));
            obj.put(EVEN, parityCheck(indexId, NumericConstant.ONE));
            return new MapLiteral(obj);
        }

        private ExpressionNode parityCheck(ExpressionNode numericExpression, NumericConstant expected) {
            return new BinaryOperation(BinaryOperator.EQ, new BinaryOperation(BinaryOperator.REM, numericExpression, NumericConstant.TWO), expected);
        }
    };
}

Example 2 with BinaryOperation

use of org.apache.sling.scripting.sightly.compiler.expression.nodes.BinaryOperation in project sling by apache.

the class ExpressionReducer method evaluate.

@Override
public EvalResult evaluate(BinaryOperation binaryOperation) {
    EvalResult left = eval(binaryOperation.getLeftOperand());
    EvalResult right = eval(binaryOperation.getRightOperand());
    if (!(left.isConstant() && right.isConstant())) {
        return EvalResult.nonConstant(new BinaryOperation(binaryOperation.getOperator(), left.getNode(), right.getNode()));
    }
    return EvalResult.constant(binaryOperation.getOperator().eval(left.getValue(), right.getValue()));
}

Example 3 with BinaryOperation

use of org.apache.sling.scripting.sightly.compiler.expression.nodes.BinaryOperation in project sling by apache.

the class MarkupHandler method emitMultipleFragment.

private void emitMultipleFragment(String name, Interpolation interpolation, char quoteChar, PluginInvoke invoke) {
    // Simplified algorithm for attribute output, which works when the interpolation is not of size 1. In this
    // case we are certain that the attribute value cannot be the boolean value true, so we can skip this test
    // altogether
    Expression expression = expressionWrapper.transform(interpolation, getAttributeMarkupContext(name), ExpressionContext.ATTRIBUTE);
    String attrContent = symbolGenerator.next("attrContent");
    String shouldDisplayAttr = symbolGenerator.next("shouldDisplayAttr");
    stream.write(new VariableBinding.Start(attrContent, expression.getRoot()));
    stream.write(new VariableBinding.Start(shouldDisplayAttr, new BinaryOperation(BinaryOperator.OR, new Identifier(attrContent), new BinaryOperation(BinaryOperator.EQ, new StringConstant("false"), new Identifier(attrContent)))));
    stream.write(new Conditional.Start(shouldDisplayAttr, true));
    emitAttributeStart(name);
    invoke.beforeAttributeValue(stream, name, expression.getRoot());
    emitAttributeValueStart(quoteChar);
    stream.write(new OutputVariable(attrContent));
    emitAttributeEnd(quoteChar);
    invoke.afterAttributeValue(stream, name);
    stream.write(Conditional.END);
    stream.write(VariableBinding.END);
    stream.write(VariableBinding.END);
}

Example 4 with BinaryOperation

use of org.apache.sling.scripting.sightly.compiler.expression.nodes.BinaryOperation in project sling by apache.

the class ListPlugin method invoke.

@Override
public PluginInvoke invoke(final Expression expression, final PluginCallInfo callInfo, final CompilerContext compilerContext) {
    return new DefaultPluginInvoke() {

        private String listVariable = compilerContext.generateVariable("collectionVar");

        private String collectionSizeVar = compilerContext.generateVariable("size");

        @Override
        public void beforeElement(PushStream stream, String tagName) {
            stream.write(new VariableBinding.Start(listVariable, expression.getRoot()));
            stream.write(new VariableBinding.Start(collectionSizeVar, new UnaryOperation(UnaryOperator.LENGTH, new Identifier(listVariable))));
            stream.write(new Conditional.Start(collectionSizeVar, true));
        }

        @Override
        public void beforeChildren(PushStream stream) {
            String itemVariable = decodeItemVariable();
            String loopStatusVar = Syntax.itemLoopStatusVariable(itemVariable);
            String indexVariable = compilerContext.generateVariable("index");
            stream.write(new Loop.Start(listVariable, itemVariable, indexVariable));
            stream.write(new VariableBinding.Start(loopStatusVar, buildStatusObj(indexVariable, collectionSizeVar)));
        }

        @Override
        public void afterChildren(PushStream stream) {
            stream.write(VariableBinding.END);
            stream.write(Loop.END);
        }

        @Override
        public void afterElement(PushStream stream) {
            stream.write(Conditional.END);
            stream.write(VariableBinding.END);
            stream.write(VariableBinding.END);
        }

        private String decodeItemVariable() {
            String[] args = callInfo.getArguments();
            if (args.length > 0) {
                return args[0];
            }
            return Syntax.DEFAULT_LIST_ITEM_VAR_NAME;
        }

        private MapLiteral buildStatusObj(String indexVar, String sizeVar) {
            HashMap<String, ExpressionNode> obj = new HashMap<>();
            Identifier indexId = new Identifier(indexVar);
            BinaryOperation firstExpr = new BinaryOperation(BinaryOperator.EQ, indexId, NumericConstant.ZERO);
            BinaryOperation lastExpr = new BinaryOperation(BinaryOperator.EQ, indexId, new BinaryOperation(BinaryOperator.SUB, new Identifier(sizeVar), NumericConstant.ONE));
            obj.put(INDEX, indexId);
            obj.put(COUNT, new BinaryOperation(BinaryOperator.ADD, indexId, NumericConstant.ONE));
            obj.put(FIRST, firstExpr);
            obj.put(MIDDLE, new UnaryOperation(UnaryOperator.NOT, new BinaryOperation(BinaryOperator.OR, firstExpr, lastExpr)));
            obj.put(LAST, lastExpr);
            obj.put(ODD, parityCheck(indexId, NumericConstant.ZERO));
            obj.put(EVEN, parityCheck(indexId, NumericConstant.ONE));
            return new MapLiteral(obj);
        }

        private ExpressionNode parityCheck(ExpressionNode numericExpression, NumericConstant expected) {
            return new BinaryOperation(BinaryOperator.EQ, new BinaryOperation(BinaryOperator.REM, numericExpression, NumericConstant.TWO), expected);
        }
    };
}

Example 5 with BinaryOperation

use of org.apache.sling.scripting.sightly.compiler.expression.nodes.BinaryOperation in project sling by apache.

the class MarkupHandler method emitSingleFragment.

private void emitSingleFragment(String name, Interpolation interpolation, char quoteChar, PluginInvoke invoke) {
    //raw expression
    Expression valueExpression = expressionWrapper.transform(interpolation, null, ExpressionContext.ATTRIBUTE);
    //holds the raw attribute value
    String attrValue = symbolGenerator.next("attrValue");
    //holds the escaped attribute value
    String attrContent = symbolGenerator.next("attrContent");
    // holds the comparison (attrValue == true)
    String isTrueVar = symbolGenerator.next("isTrueAttr");
    String shouldDisplayAttr = symbolGenerator.next("shouldDisplayAttr");
    MarkupContext markupContext = getAttributeMarkupContext(name);
    boolean alreadyEscaped = false;
    if (valueExpression.getRoot() instanceof RuntimeCall) {
        RuntimeCall rc = (RuntimeCall) valueExpression.getRoot();
        if (RuntimeFunction.XSS.equals(rc.getFunctionName())) {
            alreadyEscaped = true;
        }
    }
    ExpressionNode node = valueExpression.getRoot();
    //attrContent = <expr>
    stream.write(new VariableBinding.Start(attrValue, node));
    if (!alreadyEscaped) {
        Expression contentExpression = valueExpression.withNode(new Identifier(attrValue));
        stream.write(new VariableBinding.Start(attrContent, adjustContext(compilerContext, contentExpression, markupContext, ExpressionContext.ATTRIBUTE).getRoot()));
        stream.write(new VariableBinding.Start(shouldDisplayAttr, new BinaryOperation(BinaryOperator.OR, new Identifier(attrContent), new BinaryOperation(BinaryOperator.EQ, new StringConstant("false"), new Identifier(attrValue)))));
    } else {
        stream.write(new VariableBinding.Start(shouldDisplayAttr, new BinaryOperation(BinaryOperator.OR, new Identifier(attrValue), new BinaryOperation(BinaryOperator.EQ, new StringConstant("false"), new Identifier(attrValue)))));
    }
    // if (attrContent)
    stream.write(new Conditional.Start(shouldDisplayAttr, true));
    //write("attrName");
    emitAttributeStart(name);
    invoke.beforeAttributeValue(stream, name, node);
    stream.write(new //isTrueAttr = (attrValue == true)
    VariableBinding.Start(//isTrueAttr = (attrValue == true)
    isTrueVar, new BinaryOperation(BinaryOperator.EQ, new Identifier(attrValue), BooleanConstant.TRUE)));
    //if (!isTrueAttr)
    stream.write(new Conditional.Start(isTrueVar, false));
    // write("='");
    emitAttributeValueStart(quoteChar);
    if (!alreadyEscaped) {
        //write(attrContent)
        stream.write(new OutputVariable(attrContent));
    } else {
        // write(attrValue)
        stream.write(new OutputVariable(attrValue));
    }
    //write("'");
    emitAttributeEnd(quoteChar);
    //end if isTrueAttr
    stream.write(Conditional.END);
    //end scope for isTrueAttr
    stream.write(VariableBinding.END);
    invoke.afterAttributeValue(stream, name);
    //end if attrContent
    stream.write(Conditional.END);
    //end scope for attrContent
    stream.write(VariableBinding.END);
    if (!alreadyEscaped) {
        stream.write(VariableBinding.END);
    }
    //end scope for attrValue
    stream.write(VariableBinding.END);
}