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/*
* Copyright 2016 Federico Tomassetti
*
* 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 com.github.javaparser.symbolsolver.model.resolution;
import com.github.javaparser.symbolsolver.model.declarations.ReferenceTypeDeclaration;
/**
* An element able to find TypeDeclaration from their name.
* TypeSolvers are organized in hierarchies.
*
* @author Federico Tomassetti
*/
public interface TypeSolver {
/**
* Get the root of the hierarchy of type solver.
*/
default TypeSolver getRoot() {
if (getParent() == null) {
return this;
} else {
return getParent().getRoot();
}
}
/**
* Parent of the this TypeSolver. This can return null.
*/
TypeSolver getParent();
/**
* Set the parent of this TypeSolver.
*/
void setParent(TypeSolver parent);
/**
* Try to solve the type with the given name. It always return a SymbolReference which can be solved
* or unsolved.
*/
SymbolReference<ReferenceTypeDeclaration> tryToSolveType(String name);
/**
* Solve the given type. Either the type is found and returned or an UnsolvedSymbolException is thrown.
*/
default ReferenceTypeDeclaration solveType(String name) throws UnsolvedSymbolException {
SymbolReference<ReferenceTypeDeclaration> ref = tryToSolveType(name);
if (ref.isSolved()) {
return ref.getCorrespondingDeclaration();
} else {
throw new UnsolvedSymbolException(name, this);
}
}
}
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