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*
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* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
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package com.sun.tools.javac.comp;
import com.sun.tools.javac.tree.JCTree;
import com.sun.tools.javac.util.*;
import com.sun.tools.javac.code.*;
import com.sun.tools.javac.code.Scope.WriteableScope;
import com.sun.tools.javac.comp.DeferredAttr.AttributionMode;
/** 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.
*/
WriteableScope 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 or is this a
* serializable class?
*/
boolean isSerializable = false;
/** Is this a serializable lambda?
*/
boolean isSerializableLambda = false;
/** Is this a lambda environment?
*/
boolean isLambda = false;
/** Is this a speculative attribution environment?
*/
AttributionMode attributionMode = AttributionMode.FULL;
/**
* Is this an attribution environment for an anonymous class instantiated using <> ?
*/
boolean isAnonymousDiamond = false;
/**
* Is this an attribution environment for an instance creation expression?
*/
boolean isNewClass = false;
/** Indicate if the type being visited is a service implementation
*/
boolean visitingServiceImplementation = 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;
/** ResultInfo to be used for attributing 'yield' statement expressions
* (set by Attr.visitSwitchExpression)
*/
Attr.ResultInfo yieldResult = 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(WriteableScope 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.yieldResult = yieldResult;
info.defaultSuperCallSite = defaultSuperCallSite;
info.isSerializable = isSerializable;
info.isLambda = isLambda;
info.isSerializableLambda = isSerializableLambda;
info.attributionMode = attributionMode;
info.isAnonymousDiamond = isAnonymousDiamond;
info.isNewClass = isNewClass;
info.preferredTreeForDiagnostics = preferredTreeForDiagnostics;
info.visitingServiceImplementation = visitingServiceImplementation;
return info;
}
/** Duplicate this context, copying all fields.
*/
AttrContext dup() {
return dup(scope);
}
public Iterable getLocalElements() {
if (scope == null)
return List.nil();
return scope.getSymbols();
}
boolean lastResolveVarargs() {
return pendingResolutionPhase != null &&
pendingResolutionPhase.isVarargsRequired();
}
@Override
public String toString() {
return scope != null ? "AttrContext[" + scope.toString() + "]" : "AttrContext[]";
}
}