private static List<? extends TypeMirror> computeConditionalExpression(
Set<ElementKind> types, CompilationInfo info, TreePath parent, Tree error, int offset) {
ConditionalExpressionTree cet = (ConditionalExpressionTree) parent.getLeaf();
if (cet.getCondition() == error) {
types.add(ElementKind.PARAMETER);
types.add(ElementKind.LOCAL_VARIABLE);
types.add(ElementKind.FIELD);
return Collections.singletonList(info.getTypes().getPrimitiveType(TypeKind.BOOLEAN));
}
if (cet.getTrueExpression() == error || cet.getFalseExpression() == error) {
types.add(ElementKind.PARAMETER);
types.add(ElementKind.LOCAL_VARIABLE);
types.add(ElementKind.FIELD);
return resolveType(types, info, parent.getParentPath(), cet, offset, null, null);
}
return null;
}
@Override
@Nullable
public Choice<Unifier> visitConditionalExpression(
ConditionalExpressionTree conditional, Unifier unifier) {
return getCondition()
.unify(conditional.getCondition(), unifier.fork())
.thenChoose(unifications(getTrueExpression(), conditional.getTrueExpression()))
.thenChoose(unifications(getFalseExpression(), conditional.getFalseExpression()))
.or(
getCondition()
.negate()
.unify(conditional.getCondition(), unifier.fork())
.thenChoose(unifications(getFalseExpression(), conditional.getTrueExpression()))
.thenChoose(unifications(getTrueExpression(), conditional.getFalseExpression())));
}
@Override
public Void visitConditionalExpression(ConditionalExpressionTree node, Void p) {
checkForNullability(node.getCondition(), CONDITION_NULLABLE);
return super.visitConditionalExpression(node, p);
}