/*
 * 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.javaparsermodel.contexts;

import com.github.javaparser.ast.Node;
import com.github.javaparser.ast.body.VariableDeclarator;
import com.github.javaparser.ast.stmt.BlockStmt;
import com.github.javaparser.ast.stmt.ForEachStmt;
import com.github.javaparser.resolution.declarations.ResolvedMethodDeclaration;
import com.github.javaparser.resolution.declarations.ResolvedValueDeclaration;
import com.github.javaparser.resolution.types.ResolvedType;
import com.github.javaparser.symbolsolver.javaparsermodel.declarations.JavaParserSymbolDeclaration;
import com.github.javaparser.symbolsolver.model.resolution.SymbolReference;
import com.github.javaparser.symbolsolver.model.resolution.TypeSolver;

import java.util.Collections;
import java.util.List;

import static com.github.javaparser.symbolsolver.javaparser.Navigator.requireParentNode;

public class ForEachStatementContext extends AbstractJavaParserContext<ForEachStmt> {

    public ForEachStatementContext(ForEachStmt wrappedNode, TypeSolver typeSolver) {
        super(wrappedNode, typeSolver);
    }

    @Override
    public SymbolReference<? extends ResolvedValueDeclaration> solveSymbol(String name) {
        if (wrappedNode.getVariable().getVariables().size() != 1) {
            throw new IllegalStateException();
        }
        VariableDeclarator variableDeclarator = wrappedNode.getVariable().getVariables().get(0);
        if (variableDeclarator.getName().getId().equals(name)) {
            return SymbolReference.solved(JavaParserSymbolDeclaration.localVar(variableDeclarator, typeSolver));
        } else {
            if (requireParentNode(wrappedNode) instanceof BlockStmt) {
                return StatementContext.solveInBlock(name, typeSolver, wrappedNode);
            } else {
                return getParent().solveSymbol(name);
            }
        }
    }

    @Override
    public SymbolReference<ResolvedMethodDeclaration> solveMethod(String name, List<ResolvedType> argumentsTypes,
                                                                  boolean staticOnly) {
        return getParent().solveMethod(name, argumentsTypes, false);
    }

    @Override
    public List<VariableDeclarator> localVariablesExposedToChild(Node child) {
        if (child == wrappedNode.getBody()) {
            return wrappedNode.getVariable().getVariables();
        }
        return Collections.emptyList();
    }
}