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

The following examples show how to use jdk.nashorn.internal.ir.ForNode#getInit() . 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: LocalVariableTypesCalculator.java    From TencentKona-8 with GNU General Public License v2.0 6 votes vote down vote up 
@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 2
Source File: LocalVariableTypesCalculator.java    From jdk8u60 with GNU General Public License v2.0 6 votes vote down vote up 
@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 3
Source File: LocalVariableTypesCalculator.java    From openjdk-jdk8u with GNU General Public License v2.0 6 votes vote down vote up 
@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: LocalVariableTypesCalculator.java    From openjdk-jdk8u-backup with GNU General Public License v2.0 6 votes vote down vote up 
@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 5
Source File: LocalVariableTypesCalculator.java    From openjdk-jdk9 with GNU General Public License v2.0 6 votes vote down vote up 
@Override
public boolean enterForNode(final ForNode forNode) {
    if(!reachable) {
        return false;
    }

    final Expression init = forNode.getInit();
    if(forNode.isForInOrOf()) {
        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 6
Source File: LocalVariableTypesCalculator.java    From hottub with GNU General Public License v2.0 6 votes vote down vote up 
@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 7
Source File: LocalVariableTypesCalculator.java    From jdk8u_nashorn with GNU General Public License v2.0 6 votes vote down vote up 
@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 openjdk-jdk9 with GNU General Public License v2.0 5 votes vote down vote up 
@Override
public boolean enterForNode(final ForNode forNode) {
    if (es6 && (forNode.getInit() instanceof ObjectNode || forNode.getInit() instanceof ArrayLiteralNode)) {
        throwNotImplementedYet("es6.destructuring", forNode);
    }
    return super.enterForNode(forNode);
}
Example 9
Source File: CodeGenerator.java    From openjdk-8-source with GNU General Public License v2.0 5 votes vote down vote up 
private void enterFor(final ForNode forNode) {
    final Expression init   = forNode.getInit();
    final Expression test   = forNode.getTest();
    final Block      body   = forNode.getBody();
    final Expression modify = forNode.getModify();

    if (init != null) {
        init.accept(this);
    }

    final Label loopLabel = new Label("loop");
    final Label testLabel = new Label("test");

    method._goto(testLabel);
    method.label(loopLabel);
    body.accept(this);
    method.label(forNode.getContinueLabel());

    if (!body.isTerminal() && modify != null) {
        load(modify);
    }

    method.label(testLabel);
    if (test != null) {
        new BranchOptimizer(this, method).execute(test, loopLabel, true);
    } else {
        method._goto(loopLabel);
    }

    method.label(forNode.getBreakLabel());
}
Example 10
Source File: CodeGenerator.java    From openjdk-8-source with GNU General Public License v2.0 5 votes vote down vote up 
private void enterForIn(final ForNode forNode) {
    final Block body   = forNode.getBody();
    final Expression  modify = forNode.getModify();

    final Symbol iter      = forNode.getIterator();
    final Label  loopLabel = new Label("loop");

    final Expression init = forNode.getInit();

    load(modify, Type.OBJECT);
    method.invoke(forNode.isForEach() ? ScriptRuntime.TO_VALUE_ITERATOR : ScriptRuntime.TO_PROPERTY_ITERATOR);
    method.store(iter);
    method._goto(forNode.getContinueLabel());
    method.label(loopLabel);

    new Store<Expression>(init) {
        @Override
        protected void storeNonDiscard() {
            return;
        }
        @Override
        protected void evaluate() {
            method.load(iter);
            method.invoke(interfaceCallNoLookup(Iterator.class, "next", Object.class));
        }
    }.store();

    body.accept(this);

    method.label(forNode.getContinueLabel());
    method.load(iter);
    method.invoke(interfaceCallNoLookup(Iterator.class, "hasNext", boolean.class));
    method.ifne(loopLabel);
    method.label(forNode.getBreakLabel());
}
Example 11
Source File: CodeGenerator.java    From openjdk-8 with GNU General Public License v2.0 5 votes vote down vote up 
private void enterFor(final ForNode forNode) {
    final Expression init   = forNode.getInit();
    final Expression test   = forNode.getTest();
    final Block      body   = forNode.getBody();
    final Expression modify = forNode.getModify();

    if (init != null) {
        init.accept(this);
    }

    final Label loopLabel = new Label("loop");
    final Label testLabel = new Label("test");

    method._goto(testLabel);
    method.label(loopLabel);
    body.accept(this);
    method.label(forNode.getContinueLabel());

    if (!body.isTerminal() && modify != null) {
        load(modify);
    }

    method.label(testLabel);
    if (test != null) {
        new BranchOptimizer(this, method).execute(test, loopLabel, true);
    } else {
        method._goto(loopLabel);
    }

    method.label(forNode.getBreakLabel());
}
Example 12
Source File: CodeGenerator.java    From openjdk-8 with GNU General Public License v2.0 5 votes vote down vote up 
private void enterForIn(final ForNode forNode) {
    final Block body   = forNode.getBody();
    final Expression  modify = forNode.getModify();

    final Symbol iter      = forNode.getIterator();
    final Label  loopLabel = new Label("loop");

    final Expression init = forNode.getInit();

    load(modify, Type.OBJECT);
    method.invoke(forNode.isForEach() ? ScriptRuntime.TO_VALUE_ITERATOR : ScriptRuntime.TO_PROPERTY_ITERATOR);
    method.store(iter);
    method._goto(forNode.getContinueLabel());
    method.label(loopLabel);

    new Store<Expression>(init) {
        @Override
        protected void storeNonDiscard() {
            return;
        }
        @Override
        protected void evaluate() {
            method.load(iter);
            method.invoke(interfaceCallNoLookup(Iterator.class, "next", Object.class));
        }
    }.store();

    body.accept(this);

    method.label(forNode.getContinueLabel());
    method.load(iter);
    method.invoke(interfaceCallNoLookup(Iterator.class, "hasNext", boolean.class));
    method.ifne(loopLabel);
    method.label(forNode.getBreakLabel());
}
Example 13
Source File: CodeGenerator.java    From nashorn with GNU General Public License v2.0 5 votes vote down vote up 
private void enterFor(final ForNode forNode) {
    final Expression init   = forNode.getInit();
    final Expression test   = forNode.getTest();
    final Block      body   = forNode.getBody();
    final Expression modify = forNode.getModify();

    if (init != null) {
        init.accept(this);
    }

    final Label loopLabel = new Label("loop");
    final Label testLabel = new Label("test");

    method._goto(testLabel);
    method.label(loopLabel);
    body.accept(this);
    method.label(forNode.getContinueLabel());

    if (!body.isTerminal() && modify != null) {
        load(modify);
    }

    method.label(testLabel);
    if (test != null) {
        new BranchOptimizer(this, method).execute(test, loopLabel, true);
    } else {
        method._goto(loopLabel);
    }

    method.label(forNode.getBreakLabel());
}