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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.resolution.typesolvers;
import com.github.javaparser.JavaParser;
import com.github.javaparser.ast.CompilationUnit;
import com.github.javaparser.symbolsolver.javaparser.Navigator;
import com.github.javaparser.symbolsolver.javaparsermodel.JavaParserFacade;
import com.github.javaparser.symbolsolver.model.declarations.ReferenceTypeDeclaration;
import com.github.javaparser.symbolsolver.model.resolution.SymbolReference;
import com.github.javaparser.symbolsolver.model.resolution.TypeSolver;
import java.io.File;
import java.io.FileNotFoundException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Optional;
/**
* @author Federico Tomassetti
*/
public class JavaParserTypeSolver implements TypeSolver {
private File srcDir;
private TypeSolver parent;
private Map<String, CompilationUnit> parsedFiles = new HashMap<String, CompilationUnit>();
private Map<String, List<CompilationUnit>> parsedDirectories = new HashMap<>();
private Map<String, ReferenceTypeDeclaration> foundTypes=new HashMap<>();
public JavaParserTypeSolver(File srcDir) {
this.srcDir = srcDir;
}
@Override
public String toString() {
return "JavaParserTypeSolver{" +
"srcDir=" + srcDir +
", parent=" + parent +
'}';
}
@Override
public TypeSolver getParent() {
return parent;
}
@Override
public void setParent(TypeSolver parent) {
this.parent = parent;
}
private CompilationUnit parse(File srcFile) throws FileNotFoundException {
if (!parsedFiles.containsKey(srcFile.getAbsolutePath())) {
parsedFiles.put(srcFile.getAbsolutePath(), JavaParser.parse(srcFile));
}
return parsedFiles.get(srcFile.getAbsolutePath());
}
private List<CompilationUnit> parseDirectory(File srcDirectory) throws FileNotFoundException {
if (!parsedDirectories.containsKey(srcDirectory.getAbsolutePath())) {
List<CompilationUnit> units = new ArrayList<>();
File[] files = srcDirectory.listFiles();
if (files == null) throw new FileNotFoundException(srcDirectory.getAbsolutePath());
for (File file : files) {
if (file.getName().toLowerCase().endsWith(".java")) {
units.add(parse(file));
}
}
parsedDirectories.put(srcDirectory.getAbsolutePath(), units);
}
return parsedDirectories.get(srcDirectory.getAbsolutePath());
}
@Override
public SymbolReference<ReferenceTypeDeclaration> tryToSolveType(String name) {
if (!srcDir.exists() || !srcDir.isDirectory()) {
throw new IllegalStateException("SrcDir does not exist or is not a directory: " + srcDir.getAbsolutePath());
}
// TODO support enums
// TODO support interfaces
if (foundTypes.containsKey(name))
return SymbolReference.solved(foundTypes.get(name));
SymbolReference<ReferenceTypeDeclaration> result = tryToSolveTypeUncached(name);
if (result.isSolved()) {
foundTypes.put(name, result.getCorrespondingDeclaration());
}
return result;
}
private SymbolReference<ReferenceTypeDeclaration> tryToSolveTypeUncached(String name) {
String[] nameElements = name.split("\\.");
for (int i = nameElements.length; i > 0; i--) {
String filePath = srcDir.getAbsolutePath();
for (int j = 0; j < i; j++) {
filePath += "/" + nameElements[j];
}
filePath += ".java";
String typeName = "";
for (int j = i - 1; j < nameElements.length; j++) {
if (j != i - 1) {
typeName += ".";
}
typeName += nameElements[j];
}
File srcFile = new File(filePath);
try {
CompilationUnit compilationUnit = parse(srcFile);
Optional<com.github.javaparser.ast.body.TypeDeclaration<?>> astTypeDeclaration = Navigator.findType(compilationUnit, typeName);
if (astTypeDeclaration.isPresent()) {
return SymbolReference.solved(JavaParserFacade.get(this).getTypeDeclaration(astTypeDeclaration.get()));
}
} catch (FileNotFoundException e) {
// Ignore
}
try {
List<CompilationUnit> compilationUnits = parseDirectory(srcFile.getParentFile());
for (CompilationUnit compilationUnit : compilationUnits) {
Optional<com.github.javaparser.ast.body.TypeDeclaration<?>> astTypeDeclaration = Navigator.findType(compilationUnit, typeName);
if (astTypeDeclaration.isPresent()) {
return SymbolReference.solved(JavaParserFacade.get(this).getTypeDeclaration(astTypeDeclaration.get()));
}
}
} catch (FileNotFoundException e) {
// Ignore
}
}
return SymbolReference.unsolved(ReferenceTypeDeclaration.class);
}
}
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