Java Code Examples for jdk.nashorn.internal.ir.ForNode#isForIn()

The following examples show how to use jdk.nashorn.internal.ir.ForNode#isForIn() . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.

Example 1

Source File: Attr.java From openjdk-8 with GNU General Public License v2.0

6 votes

@Override
public Node leaveForNode(final ForNode forNode) {
    if (forNode.isForIn()) {
        forNode.setIterator(newInternal(lc.getCurrentFunction().uniqueName(ITERATOR_PREFIX.symbolName()), Type.typeFor(ITERATOR_PREFIX.type()))); //NASHORN-73
        /*
         * Iterators return objects, so we need to widen the scope of the
         * init variable if it, for example, has been assigned double type
         * see NASHORN-50
         */
        newType(forNode.getInit().getSymbol(), Type.OBJECT);
    }

    end(forNode);

    return forNode;
}

Example 2

Source File: Attr.java From openjdk-8-source with GNU General Public License v2.0

6 votes

@Override
public Node leaveForNode(final ForNode forNode) {
    if (forNode.isForIn()) {
        forNode.setIterator(newInternal(lc.getCurrentFunction().uniqueName(ITERATOR_PREFIX.symbolName()), Type.typeFor(ITERATOR_PREFIX.type()))); //NASHORN-73
        /*
         * Iterators return objects, so we need to widen the scope of the
         * init variable if it, for example, has been assigned double type
         * see NASHORN-50
         */
        newType(forNode.getInit().getSymbol(), Type.OBJECT);
    }

    end(forNode);

    return forNode;
}

Example 3

Source File: LocalVariableTypesCalculator.java From TencentKona-8 with GNU General Public License v2.0

6 votes

@Override
public boolean enterForNode(final ForNode forNode) {
    if(!reachable) {
        return false;
    }

    final Expression init = forNode.getInit();
    if(forNode.isForIn()) {
        final JoinPredecessorExpression iterable = forNode.getModify();
        visitExpression(iterable);
        enterTestFirstLoop(forNode, null, init,
                // If we're iterating over property names, and we can discern from the runtime environment
                // of the compilation that the object being iterated over must use strings for property
                // names (e.g., it is a native JS object or array), then we'll not bother trying to treat
                // the property names optimistically.
                !compiler.useOptimisticTypes() || (!forNode.isForEach() && compiler.hasStringPropertyIterator(iterable.getExpression())));
    } else {
        if(init != null) {
            visitExpressionOnEmptyStack(init);
        }
        enterTestFirstLoop(forNode, forNode.getModify(), null, false);
    }
    assertTypeStackIsEmpty();
    return false;
}

Example 4

Source File: Lower.java From jdk8u60 with GNU General Public License v2.0

6 votes

@Override
public Node leaveForNode(final ForNode forNode) {
    ForNode newForNode = forNode;

    final Expression test = forNode.getTest();
    if (!forNode.isForIn() && isAlwaysTrue(test)) {
        newForNode = forNode.setTest(lc, null);
    }

    newForNode = checkEscape(newForNode);
    if(newForNode.isForIn()) {
        // Wrap it in a block so its internally created iterator is restricted in scope
        addStatementEnclosedInBlock(newForNode);
    } else {
        addStatement(newForNode);
    }
    return newForNode;
}

Example 5

Source File: IRTranslator.java From openjdk-jdk9 with GNU General Public License v2.0

6 votes

@Override
public boolean enterForNode(final ForNode forNode) {
    if (forNode.isForIn()) {
        curStat = new ForInLoopTreeImpl(forNode,
                translateExpr(forNode.getInit()),
                translateExpr(forNode.getModify()),
                translateBlock(forNode.getBody()));
    } else if (forNode.isForOf()) {
        curStat = new ForOfLoopTreeImpl(forNode,
                translateExpr(forNode.getInit()),
                translateExpr(forNode.getModify()),
                translateBlock(forNode.getBody()));
    } else {
        curStat = new ForLoopTreeImpl(forNode,
                translateExpr(forNode.getInit()),
                translateExpr(forNode.getTest()),
                translateExpr(forNode.getModify()),
                translateBlock(forNode.getBody()));
    }

    return false;
}

Example 6

Source File: Lower.java From openjdk-jdk8u with GNU General Public License v2.0

6 votes

@Override
public Node leaveForNode(final ForNode forNode) {
    ForNode newForNode = forNode;

    final Expression test = forNode.getTest();
    if (!forNode.isForIn() && isAlwaysTrue(test)) {
        newForNode = forNode.setTest(lc, null);
    }

    newForNode = checkEscape(newForNode);
    if(newForNode.isForIn()) {
        // Wrap it in a block so its internally created iterator is restricted in scope
        addStatementEnclosedInBlock(newForNode);
    } else {
        addStatement(newForNode);
    }
    return newForNode;
}

Example 7

Source File: LocalVariableTypesCalculator.java From hottub with GNU General Public License v2.0

6 votes

@Override
public boolean enterForNode(final ForNode forNode) {
    if(!reachable) {
        return false;
    }

    final Expression init = forNode.getInit();
    if(forNode.isForIn()) {
        final JoinPredecessorExpression iterable = forNode.getModify();
        visitExpression(iterable);
        enterTestFirstLoop(forNode, null, init,
                // If we're iterating over property names, and we can discern from the runtime environment
                // of the compilation that the object being iterated over must use strings for property
                // names (e.g., it is a native JS object or array), then we'll not bother trying to treat
                // the property names optimistically.
                !compiler.useOptimisticTypes() || (!forNode.isForEach() && compiler.hasStringPropertyIterator(iterable.getExpression())));
    } else {
        if(init != null) {
            visitExpressionOnEmptyStack(init);
        }
        enterTestFirstLoop(forNode, forNode.getModify(), null, false);
    }
    assertTypeStackIsEmpty();
    return false;
}

Example 8

Source File: Lower.java From jdk8u_nashorn with GNU General Public License v2.0

6 votes

@Override
public Node leaveForNode(final ForNode forNode) {
    ForNode newForNode = forNode;

    final Expression test = forNode.getTest();
    if (!forNode.isForIn() && isAlwaysTrue(test)) {
        newForNode = forNode.setTest(lc, null);
    }

    newForNode = checkEscape(newForNode);
    if(newForNode.isForIn()) {
        // Wrap it in a block so its internally created iterator is restricted in scope
        addStatementEnclosedInBlock(newForNode);
    } else {
        addStatement(newForNode);
    }
    return newForNode;
}

Example 9

Source File: Lower.java From openjdk-jdk8u-backup with GNU General Public License v2.0

6 votes

@Override
public Node leaveForNode(final ForNode forNode) {
    ForNode newForNode = forNode;

    final Expression test = forNode.getTest();
    if (!forNode.isForIn() && isAlwaysTrue(test)) {
        newForNode = forNode.setTest(lc, null);
    }

    newForNode = checkEscape(newForNode);
    if(newForNode.isForIn()) {
        // Wrap it in a block so its internally created iterator is restricted in scope
        addStatementEnclosedInBlock(newForNode);
    } else {
        addStatement(newForNode);
    }
    return newForNode;
}

Example 10

Source File: OptimisticTypesCalculator.java From hottub with GNU General Public License v2.0

5 votes

@Override
public boolean enterForNode(final ForNode forNode) {
    if(forNode.isForIn()) {
        // for..in has the iterable in its "modify"
        tagNeverOptimistic(forNode.getModify());
    } else {
        // Test is never optimistic (always coerced to boolean).
        tagNeverOptimisticLoopTest(forNode);
    }
    return true;
}

Example 11

Source File: Lower.java From openjdk-8 with GNU General Public License v2.0

5 votes

@Override
public Node leaveForNode(final ForNode forNode) {
    ForNode newForNode = forNode;

    final Node  test = forNode.getTest();
    if (!forNode.isForIn() && conservativeAlwaysTrue(test)) {
        newForNode = forNode.setTest(lc, null);
    }

    return addStatement(checkEscape(newForNode));
}

Example 12

Source File: OptimisticTypesCalculator.java From jdk8u_nashorn with GNU General Public License v2.0

5 votes

@Override
public boolean enterForNode(final ForNode forNode) {
    if(forNode.isForIn()) {
        // for..in has the iterable in its "modify"
        tagNeverOptimistic(forNode.getModify());
    } else {
        // Test is never optimistic (always coerced to boolean).
        tagNeverOptimisticLoopTest(forNode);
    }
    return true;
}

Example 13

Source File: Lower.java From nashorn with GNU General Public License v2.0

5 votes

@Override
public Node leaveForNode(final ForNode forNode) {
    ForNode newForNode = forNode;

    final Node  test = forNode.getTest();
    if (!forNode.isForIn() && conservativeAlwaysTrue(test)) {
        newForNode = forNode.setTest(lc, null);
    }

    return addStatement(checkEscape(newForNode));
}

Example 14

Source File: OptimisticTypesCalculator.java From openjdk-jdk8u-backup with GNU General Public License v2.0

5 votes

@Override
public boolean enterForNode(final ForNode forNode) {
    if(forNode.isForIn()) {
        // for..in has the iterable in its "modify"
        tagNeverOptimistic(forNode.getModify());
    } else {
        // Test is never optimistic (always coerced to boolean).
        tagNeverOptimisticLoopTest(forNode);
    }
    return true;
}

Example 15

Source File: AssignSymbols.java From jdk8u_nashorn with GNU General Public License v2.0

5 votes

@Override
public Node leaveForNode(final ForNode forNode) {
    if (forNode.isForIn()) {
        return forNode.setIterator(lc, newObjectInternal(ITERATOR_PREFIX)); //NASHORN-73
    }

    return end(forNode);
}

Example 16

Source File: AssignSymbols.java From openjdk-jdk8u with GNU General Public License v2.0

5 votes

@Override
public Node leaveForNode(final ForNode forNode) {
    if (forNode.isForIn()) {
        return forNode.setIterator(lc, newObjectInternal(ITERATOR_PREFIX)); //NASHORN-73
    }

    return end(forNode);
}

Example 17

Source File: CodeGenerator.java From openjdk-8-source with GNU General Public License v2.0

5 votes

@Override
public boolean enterForNode(final ForNode forNode) {
    lineNumber(forNode);

    if (forNode.isForIn()) {
        enterForIn(forNode);
    } else {
        enterFor(forNode);
    }

    return false;
}

Example 18

Source File: OptimisticTypesCalculator.java From jdk8u60 with GNU General Public License v2.0

5 votes

@Override
public boolean enterForNode(final ForNode forNode) {
    if(forNode.isForIn()) {
        // for..in has the iterable in its "modify"
        tagNeverOptimistic(forNode.getModify());
    } else {
        // Test is never optimistic (always coerced to boolean).
        tagNeverOptimisticLoopTest(forNode);
    }
    return true;
}

Example 19

Source File: AssignSymbols.java From jdk8u60 with GNU General Public License v2.0

5 votes

@Override
public Node leaveForNode(final ForNode forNode) {
    if (forNode.isForIn()) {
        forNode.setIterator(newObjectInternal(ITERATOR_PREFIX)); //NASHORN-73
    }

    return end(forNode);
}

Example 20

Source File: CodeGenerator.java From openjdk-8 with GNU General Public License v2.0

5 votes

@Override
public boolean enterForNode(final ForNode forNode) {
    lineNumber(forNode);

    if (forNode.isForIn()) {
        enterForIn(forNode);
    } else {
        enterFor(forNode);
    }

    return false;
}