Examples with IdentifierTree com.sun.source.tree.IdentifierTree used on opensource projects

Example 56 with IdentifierTree

use of com.sun.source.tree.IdentifierTree in project st-js by st-js.

the class LambdaExpressionWriter method accessOuterScope.

private boolean accessOuterScope(LambdaExpressionTree lambda) {
    AtomicBoolean outerScopeAccess = new AtomicBoolean(false);
    lambda.accept(new TreeScanner<Void, Void>() {

        private boolean checkStopped;

        @Override
        public Void visitIdentifier(IdentifierTree tree, Void arg1) {
            if (checkStopped) {
                return super.visitIdentifier(tree, arg1);
            }
            Element fieldElement = TreeUtils.elementFromUse(tree);
            if (IdentifierAccessOuterScopeCheck.isRegularInstanceField(fieldElement, tree) || GeneratorConstants.THIS.equals(tree.getName().toString())) {
                outerScopeAccess.set(true);
            }
            return super.visitIdentifier(tree, arg1);
        }

        @Override
        public Void visitClass(ClassTree arg0, Void arg1) {
            // stop the checks if a new type is encountered
            checkStopped = true;
            return super.visitClass(arg0, arg1);
        }

        @Override
        public Void visitMethodInvocation(MethodInvocationTree tree, Void arg1) {
            if (checkStopped) {
                return super.visitMethodInvocation(tree, arg1);
            }
            Element methodElement = TreeUtils.elementFromUse(tree);
            if (JavaNodes.isStatic(methodElement)) {
                // only instance methods
                return super.visitMethodInvocation(tree, arg1);
            }
            String name = MethodInvocationWriter.buildMethodName(tree);
            if (GeneratorConstants.THIS.equals(name) || GeneratorConstants.SUPER.equals(name)) {
                // this and super call are ok
                return super.visitMethodInvocation(tree, arg1);
            }
            if (!(tree.getMethodSelect() instanceof IdentifierTree)) {
                // check for Outer.this check
                return super.visitMethodInvocation(tree, arg1);
            }
            outerScopeAccess.set(true);
            return super.visitMethodInvocation(tree, arg1);
        }
    }, null);
    return outerScopeAccess.get();
}

Example 57 with IdentifierTree

use of com.sun.source.tree.IdentifierTree in project st-js by st-js.

the class TreeUtils method isSelfAccess.

/**
 * Returns true if the tree is a tree that 'looks like' either an access of a field or an invocation of a method
 * that are owned by the same accessing instance.
 *
 * It would only return true if the access tree is of the form:
 *
 * <pre>
 *   field
 *   this.field
 *
 *   method()
 *   this.method()
 * </pre>
 *
 * It does not perform any semantical check to differentiate between fields and local variables; local methods or
 * imported static methods.
 *
 * @param tree
 *            expression tree representing an access to object member
 * @return {@code true} iff the member is a member of {@code this} instance
 */
public static boolean isSelfAccess(final ExpressionTree tree) {
    ExpressionTree tr = TreeUtils.skipParens(tree);
    // If method invocation check the method select
    if (tr.getKind() == Tree.Kind.ARRAY_ACCESS) {
        return false;
    }
    if (tree.getKind() == Tree.Kind.METHOD_INVOCATION) {
        tr = ((MethodInvocationTree) tree).getMethodSelect();
    }
    tr = TreeUtils.skipParens(tr);
    if (tr.getKind() == Tree.Kind.TYPE_CAST) {
        tr = ((TypeCastTree) tr).getExpression();
    }
    tr = TreeUtils.skipParens(tr);
    if (tr.getKind() == Tree.Kind.IDENTIFIER) {
        return true;
    }
    if (tr.getKind() == Tree.Kind.MEMBER_SELECT) {
        tr = ((MemberSelectTree) tr).getExpression();
        if (tr.getKind() == Tree.Kind.IDENTIFIER) {
            Name ident = ((IdentifierTree) tr).getName();
            return ident.contentEquals("this") || ident.contentEquals("super");
        }
    }
    return false;
}

Example 58 with IdentifierTree

use of com.sun.source.tree.IdentifierTree in project st-js by st-js.

the class MethodInvocationWriter method buildMethodName.

public static String buildMethodName(MethodInvocationTree tree) {
    ExpressionTree select = tree.getMethodSelect();
    if (select instanceof IdentifierTree) {
        // simple call: method(args)
        return ((IdentifierTree) select).getName().toString();
    }
    // calls with target: target.method(args)
    MemberSelectTree memberSelect = (MemberSelectTree) select;
    return memberSelect.getIdentifier().toString();
}

Example 59 with IdentifierTree

use of com.sun.source.tree.IdentifierTree in project st-js by st-js.

the class MethodInvocationWriter method buildTarget.

public static <JS, T extends MethodInvocationTree> JS buildTarget(WriterVisitor<JS> visitor, TreeWrapper<T, JS> tw) {
    ExpressionTree select = tw.getTree().getMethodSelect();
    if (select instanceof IdentifierTree) {
        // simple call: method(args)
        return MemberWriters.buildTarget(tw);
    }
    // calls with target: target.method(args)
    if (TreeUtils.isSuperCall(tw.getTree())) {
        // staticMethod
        return MemberWriters.buildTarget(tw);
    }
    MemberSelectTree memberSelect = (MemberSelectTree) select;
    JS targetJS = visitor.scan(memberSelect.getExpression(), tw.getContext());
    if (tw.isStatic() && !ElementUtils.isTypeKind(tw.child(memberSelect).child(memberSelect.getExpression()).getElement())) {
        // this is static method called from an instances: e.g. x.staticMethod()
        targetJS = tw.getContext().js().property(targetJS, JavascriptKeywords.CONSTRUCTOR);
    }
    return targetJS;
}

Example 60 with IdentifierTree

use of com.sun.source.tree.IdentifierTree in project st-js by st-js.

the class DefaultIdentifierTemplate method visit.

@Override
@SuppressWarnings("PMD.CyclomaticComplexity")
public JS visit(WriterVisitor<JS> visitor, IdentifierTree tree, GenerationContext<JS> context) {
    String name = tree.getName().toString();
    if (GeneratorConstants.THIS.equals(name)) {
        return context.js().keyword(Keyword.THIS);
    }
    TreeWrapper<IdentifierTree, JS> tw = context.getCurrentWrapper();
    Element def = tw.getElement();
    if (def.getKind() == ElementKind.PACKAGE) {
        return null;
    }
    if (def.getKind() == ElementKind.FIELD) {
        return visitField(tree, context);
    }
    if (def.getKind() == ElementKind.ENUM_CONSTANT) {
        return visitEnumConstant(def, tree, context);
    }
    if (ElementUtils.isTypeKind(def)) {
        if (tw.isGlobal()) {
            // use this to register the class name - to build the dependencies
            context.getNames().getTypeName(context, def, DependencyType.STATIC);
            return null;
        }
        name = context.getNames().getTypeName(context, def, DependencyType.STATIC);
    }
    // assume variable
    return context.js().name(name);
}