Example usage for org.antlr.v4.runtime.tree ParseTree accept

Introduction

In this page you can find the example usage for org.antlr.v4.runtime.tree ParseTree accept.

Prototype

<T> T accept(ParseTreeVisitor<? extends T> visitor);

Source Link

Document

The ParseTreeVisitor needs a double dispatch method.

Usage

From source file:android.databinding.tool.ExpressionVisitor.java

License:Apache License

@Override
public Expr visitMethodInvocation(@NotNull BindingExpressionParser.MethodInvocationContext ctx) {
    try {/*  w w w.j  a  v  a  2  s  . co  m*/
        onEnter(ctx);
        List<Expr> args = new ArrayList<Expr>();
        if (ctx.args != null) {
            for (ParseTree item : ctx.args.children) {
                if (ObjectUtils.equals(item.getText(), ",")) {
                    continue;
                }
                args.add(item.accept(this));
            }
        }
        return mModel.methodCall(ctx.target.accept(this), ctx.Identifier().getText(), args);
    } finally {
        onExit(ctx);
    }
}

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From source file:android.databinding.tool.ExpressionVisitor.java

License:Apache License

@Override
public Expr visitResources(@NotNull BindingExpressionParser.ResourcesContext ctx) {
    try {/*from w  ww .  j  ava 2s . c o m*/
        onEnter(ctx);
        final List<Expr> args = new ArrayList<Expr>();
        if (ctx.resourceParameters() != null) {
            for (ParseTree item : ctx.resourceParameters().expressionList().children) {
                if (ObjectUtils.equals(item.getText(), ",")) {
                    continue;
                }
                args.add(item.accept(this));
            }
        }
        final String resourceReference = ctx.ResourceReference().getText();
        final int colonIndex = resourceReference.indexOf(':');
        final int slashIndex = resourceReference.indexOf('/');
        final String packageName = colonIndex < 0 ? null : resourceReference.substring(1, colonIndex).trim();
        final int startIndex = Math.max(1, colonIndex + 1);
        final String resourceType = resourceReference.substring(startIndex, slashIndex).trim();
        final String resourceName = resourceReference.substring(slashIndex + 1).trim();
        return mModel.resourceExpr(packageName, resourceType, resourceName, args);
    } finally {
        onExit(ctx);
    }
}

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From source file:codemate.Fortran.FortranTemplater.java

License:Open Source License

/**
 * visitChildren//w  ww .ja va  2s.  co m
 * 
 * This method overrides the original one which will be interfered when I
 * make changes to the parse tree (e.g. inserting multiple nodes) by
 * changing the loop style.
 */
public Void visitChildren(RuleNode node) {
    Void result = defaultResult();
    for (int i = 0; i < node.getChildCount(); i++) {
        if (!shouldVisitNextChild(node, result))
            break;
        ParseTree c = node.getChild(i);
        Void childResult = c.accept(this);
        result = aggregateResult(result, childResult);
    }
    return result;
}

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From source file:com.blazebit.persistence.impl.expression.JPQLSelectExpressionVisitorImpl.java

License:Apache License

BinaryExpressionPredicate handleComparison(ParseTree left, ParseTree comparisonOperator, ParseTree right) {
    BinaryExpressionPredicate pred = (BinaryExpressionPredicate) comparisonOperator.accept(this);
    pred.setLeft(left.accept(this));
    pred.setRight(right.accept(this));
    return pred;//ww w.j a  v a2s .c  o m
}

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From source file:com.blazebit.persistence.impl.expression.JPQLSelectExpressionVisitorImpl.java

License:Apache License

private CompositeExpression acceptAndCompose(CompositeExpression composite, ParseTree ruleContext) {
    Expression expr = ruleContext.accept(this);
    if (expr != null) {
        composite.append(expr);//from  www . ja va  2 s  .  c o  m
    }

    return composite;
}

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From source file:com.blazebit.persistence.impl.expression.JPQLSelectExpressionVisitorImpl.java

License:Apache License

private CompositeExpression accept(ParseTree ruleContext) {
    Expression expr = ruleContext.accept(this);
    CompositeExpression composite;/*from  w  ww  .jav  a 2s .com*/
    if (expr instanceof CompositeExpression) {
        composite = (CompositeExpression) expr;
    } else {
        composite = new CompositeExpression(new ArrayList<Expression>(Arrays.asList(expr)));
    }
    return composite;
}

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From source file:com.blazebit.persistence.parser.expression.JPQLSelectExpressionVisitorImpl.java

License:Apache License

BinaryExpressionPredicate handleQuantifiedComparison(ParseTree left, ParseTree comparisonOperator,
        ParseTree right, PredicateQuantifier quantifier) {
    QuantifiableBinaryExpressionPredicate pred = (QuantifiableBinaryExpressionPredicate) comparisonOperator
            .accept(this);
    pred.setLeft(left.accept(this));
    pred.setRight(right.accept(this));
    pred.setQuantifier(quantifier);/*w  ww .  j  a v  a  2  s .co m*/
    return pred;
}

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From source file:com.boothen.jsonedit.outline.JsonLabelProvider.java

License:Open Source License

@Override
public Image getImage(Object element) {
    if (element instanceof ParseTree) {
        ParseTree context = (ParseTree) element;
        return context.accept(contextImageVisitor);
    }//w  w  w .j  a v  a 2s  . co m

    return null;
}

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From source file:com.boothen.jsonedit.quickoutline.QuickOutlinePopup.java

License:Open Source License

@Override
public void setInput(Object input) {
    ParseTree parseTree = (ParseTree) input;
    treeViewer.setInput(new Container<ParseTree>(parseTree));
    filterText.setText("");

    // In theory, it should be possible to derive the parent,
    // but this is not trivial and needs to be reliable
    contentProvider.refreshParents(parseTree);

    final ISelection selection = sourceViewer.getSelectionProvider().getSelection();

    // try to find the element that contains the text cursor in sourceViewer and pre-select it
    if (selection instanceof ITextSelection) {
        ITextSelection textSelection = (ITextSelection) selection;
        int start = textSelection.getOffset();
        int length = textSelection.getLength();

        PositionVisitor positionVisitor = new PositionVisitor();
        Map<ParseTree, Position> positions = parseTree.accept(positionVisitor);

        ParseTree element = parseTree.accept(new JsonContextTokenFinder(start, start + length, positions));
        // similar code exists in JsonContentOutlinePage
        while (element != null && !contentProvider.isKnown(element)) {
            element = element.getParent();
        }//from  ww  w  .  j  a va  2s .com

        if (element != null) {
            treeViewer.reveal(element);
            treeViewer.setSelection(new TreeSelection(new TreePath(new Object[] { element })));
        }
    }

    treeViewer.expandAll();
}

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From source file:com.github.gfx.android.orma.migration.sqliteparser.SQLiteCreateTableStatementCollector.java

License:Apache License

static String combineParseTree(ParseTree node) {
    return node.accept(new AbstractParseTreeVisitor<StringBuilder>() {
        final StringBuilder sb = new StringBuilder();

        @Override//from   w w w .ja v a  2s. c o m
        protected StringBuilder defaultResult() {
            return sb;
        }

        @Override
        public StringBuilder visitTerminal(TerminalNode node) {
            if (sb.length() != 0) {
                sb.append(' ');
            }
            sb.append(node.getText());
            return sb;
        }
    }).toString();
}

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