public boolean isAvailable(@NotNull Project project, Editor editor, PsiFile file) {
if (!(file instanceof PsiJavaFile)) return false;
if (myUnresolvedReference.isQualified()) return false;
final String referenceName = myUnresolvedReference.getReferenceName();
if (referenceName == null) return false;
PsiManager manager = file.getManager();
if (!myUnresolvedReference.isValid() || !manager.isInProject(myUnresolvedReference))
return false;
PsiElement container =
PsiTreeUtil.getParentOfType(myUnresolvedReference, PsiCodeBlock.class, PsiClass.class);
if (!(container instanceof PsiCodeBlock)) return false;
myOutOfScopeVariable = null;
while (container.getParent() instanceof PsiStatement
|| container.getParent() instanceof PsiCatchSection) container = container.getParent();
container.accept(
new JavaRecursiveElementWalkingVisitor() {
@Override
public void visitReferenceExpression(PsiReferenceExpression expression) {}
@Override
public void visitExpression(PsiExpression expression) {
// Don't look inside expressions
}
@Override
public void visitLocalVariable(PsiLocalVariable variable) {
if (referenceName.equals(variable.getName())) {
if (myOutOfScopeVariable == null) {
myOutOfScopeVariable = variable;
} else {
myOutOfScopeVariable = null; // 2 conflict variables
}
}
}
});
return myOutOfScopeVariable != null;
}
