com.redhat.ceylon.langtools.tools.javac.comp.AttrContext Maven / Gradle / Ivy
/*
* Copyright (c) 1999, 2014, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package com.redhat.ceylon.langtools.tools.javac.comp;
import com.redhat.ceylon.langtools.tools.javac.tree.JCTree;
import com.redhat.ceylon.langtools.tools.javac.util.*;
import com.redhat.ceylon.langtools.tools.javac.code.*;
/** Contains information specific to the attribute and enter
* passes, to be used in place of the generic field in environments.
*
* This is NOT part of any supported API.
* If you write code that depends on this, you do so at your own risk.
* This code and its internal interfaces are subject to change or
* deletion without notice.
*/
public class AttrContext {
/** The scope of local symbols.
*/
Scope scope = null;
/** The number of enclosing `static' modifiers.
*/
int staticLevel = 0;
/** Is this an environment for a this(...) or super(...) call?
*/
boolean isSelfCall = false;
/** Are we evaluating the selector of a `super' or type name?
*/
boolean selectSuper = false;
/** Is the current target of lambda expression or method reference serializable?
*/
boolean isSerializable = false;
/** Are arguments to current function applications boxed into an array for varargs?
*/
Resolve.MethodResolutionPhase pendingResolutionPhase = null;
/** A record of the lint/SuppressWarnings currently in effect
*/
Lint lint;
/** The variable whose initializer is being attributed
* useful for detecting self-references in variable initializers
*/
Symbol enclVar = null;
/** ResultInfo to be used for attributing 'return' statement expressions
* (set by Attr.visitMethod and Attr.visitLambda)
*/
Attr.ResultInfo returnResult = null;
/** Symbol corresponding to the site of a qualified default super call
*/
Type defaultSuperCallSite = null;
/** Tree that when non null, is to be preferentially used in diagnostics.
* Usually Env.tree is the tree to be referred to in messages,
* but this may not be true during the window a method is looked up in enclosing
* contexts (JDK-8145466)
*/
JCTree preferredTreeForDiagnostics;
/** Duplicate this context, replacing scope field and copying all others.
*/
AttrContext dup(Scope scope) {
AttrContext info = new AttrContext();
info.scope = scope;
info.staticLevel = staticLevel;
info.isSelfCall = isSelfCall;
info.selectSuper = selectSuper;
info.pendingResolutionPhase = pendingResolutionPhase;
info.lint = lint;
info.enclVar = enclVar;
info.returnResult = returnResult;
info.defaultSuperCallSite = defaultSuperCallSite;
info.isSerializable = isSerializable;
info.preferredTreeForDiagnostics = preferredTreeForDiagnostics;
return info;
}
/** Duplicate this context, copying all fields.
*/
AttrContext dup() {
return dup(scope);
}
public Iterable getLocalElements() {
if (scope == null)
return List.nil();
return scope.getElements();
}
boolean lastResolveVarargs() {
return pendingResolutionPhase != null &&
pendingResolutionPhase.isVarargsRequired();
}
@Override
public String toString() {
return "AttrContext[" + scope.toString() + "]";
}
}