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/*
* Copyright (C) 2007-2010 JĂșlio Vilmar Gesser.
* Copyright (C) 2011, 2013-2016 The JavaParser Team.
*
* This file is part of JavaParser.
*
* JavaParser can be used either under the terms of
* a) the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
* b) the terms of the Apache License
*
* You should have received a copy of both licenses in LICENCE.LGPL and
* LICENCE.APACHE. Please refer to those files for details.
*
* JavaParser is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*/
package com.github.javaparser.resolution.types.parametrization;
import com.github.javaparser.resolution.declarations.ResolvedTypeParameterDeclaration;
import com.github.javaparser.resolution.types.ResolvedType;
import com.github.javaparser.resolution.types.ResolvedWildcard;
import java.util.Optional;
/**
* @author Federico Tomassetti
*/
public interface ResolvedTypeParameterValueProvider {
/**
* Calculate the value for the given type parameter.
* It could be inherited.
*/
Optional<ResolvedType> typeParamValue(ResolvedTypeParameterDeclaration typeParameterDeclaration);
/**
* Replace the type typeParametersValues present in the given type with the ones for which this type
* has a value.
*/
default ResolvedType useThisTypeParametersOnTheGivenType(ResolvedType type) {
if (type.isTypeVariable()) {
ResolvedTypeParameterDeclaration typeParameter = type.asTypeParameter();
if (typeParameter.declaredOnType()) {
Optional<ResolvedType> typeParam = typeParamValue(typeParameter);
if (typeParam.isPresent()) {
type = typeParam.get();
}
}
}
if (type.isWildcard() && type.asWildcard().isBounded()) {
if (type.asWildcard().isExtends()) {
return ResolvedWildcard.extendsBound(useThisTypeParametersOnTheGivenType(type.asWildcard().getBoundedType()));
} else {
return ResolvedWildcard.superBound(useThisTypeParametersOnTheGivenType(type.asWildcard().getBoundedType()));
}
}
if (type.isReferenceType()) {
type = type.asReferenceType().transformTypeParameters(this::useThisTypeParametersOnTheGivenType);
}
return type;
}
Optional<ResolvedType> getGenericParameterByName(String name);
}