/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package freemarker.ext.beans;
import freemarker.core.
_DelayedOrdinal;
/**
* Describes a failed member lookup. Instances of this must not be cached as instances may store the actual argument
* values.
*/
final class
EmptyMemberAndArguments extends
MaybeEmptyMemberAndArguments {
static final
EmptyMemberAndArguments WRONG_NUMBER_OF_ARGUMENTS
= new
EmptyMemberAndArguments(
"No compatible overloaded variation was found; wrong number of arguments.", true, null);
private final
Object errorDescription;
private final boolean
numberOfArgumentsWrong;
private final
Object[]
unwrappedArguments;
private
EmptyMemberAndArguments(
Object errorDescription, boolean
numberOfArgumentsWrong,
Object[]
unwrappedArguments) {
this.
errorDescription =
errorDescription;
this.
numberOfArgumentsWrong =
numberOfArgumentsWrong;
this.
unwrappedArguments =
unwrappedArguments;
}
static
EmptyMemberAndArguments noCompatibleOverload(int
unwrappableIndex) {
return new
EmptyMemberAndArguments(
new
Object[] { "No compatible overloaded variation was found; can't convert (unwrap) the ",
new
_DelayedOrdinal(
Integer.
valueOf(
unwrappableIndex)), " argument to the desired Java type." },
false,
null);
}
static
EmptyMemberAndArguments noCompatibleOverload(
Object[]
unwrappedArgs) {
return new
EmptyMemberAndArguments(
"No compatible overloaded variation was found; declared parameter types and argument value types mismatch.",
false,
unwrappedArgs);
}
static
EmptyMemberAndArguments ambiguous(
Object[]
unwrappedArgs) {
return new
EmptyMemberAndArguments(
"Multiple compatible overloaded variations were found with the same priority.",
false,
unwrappedArgs);
}
static
MaybeEmptyMemberAndArguments from(
EmptyCallableMemberDescriptor emtpyMemberDesc,
Object[]
unwrappedArgs) {
if (
emtpyMemberDesc ==
EmptyCallableMemberDescriptor.
NO_SUCH_METHOD) {
return
noCompatibleOverload(
unwrappedArgs);
} else if (
emtpyMemberDesc ==
EmptyCallableMemberDescriptor.
AMBIGUOUS_METHOD) {
return
ambiguous(
unwrappedArgs);
} else {
throw new
IllegalArgumentException("Unrecognized constant: " +
emtpyMemberDesc);
}
}
Object getErrorDescription() {
return
errorDescription;
}
/**
* @return {@code null} if the error has occurred earlier than the full argument list was unwrapped.
*/
Object[]
getUnwrappedArguments() {
return
unwrappedArguments;
}
public boolean
isNumberOfArgumentsWrong() {
return
numberOfArgumentsWrong;
}
}