/*
* Copyright 2011 the original author or authors.
*
* Licensed 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 org.gradle.internal.typeconversion;
import org.gradle.internal.exceptions.DiagnosticsVisitor;
import org.gradle.internal.exceptions.FormattingDiagnosticsVisitor;
class ErrorHandlingNotationParser<N, T> implements NotationParser<N, T> {
private final Object targetTypeDisplayName;
private final String invalidNotationMessage;
private final boolean allowNullInput;
private final NotationParser<N, T> delegate;
public ErrorHandlingNotationParser(Object targetTypeDisplayName, String invalidNotationMessage, boolean allowNullInput, NotationParser<N, T> delegate) {
this.targetTypeDisplayName = targetTypeDisplayName;
this.invalidNotationMessage = invalidNotationMessage;
this.allowNullInput = allowNullInput;
this.delegate = delegate;
}
@Override
public void describe(DiagnosticsVisitor visitor) {
delegate.describe(visitor);
}
public T parseNotation(N notation) {
String failure;
//TODO SF add quotes to both formats (there will be *lots* of tests failing so I'm not sure if it is worth it).
if (notation == null && !allowNullInput) {
failure = String.format("Cannot convert a null value to %s.", targetTypeDisplayName);
} else {
try {
return delegate.parseNotation(notation);
} catch (UnsupportedNotationException e) {
failure = String.format("Cannot convert the provided notation to %s: %s.", targetTypeDisplayName, e.getNotation());
}
}
FormattingDiagnosticsVisitor visitor = new FormattingDiagnosticsVisitor();
describe(visitor);
throw new UnsupportedNotationException(notation, failure, invalidNotationMessage, visitor.getCandidates());
}
}