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/*
* Copyright (C) 2007-2010 Júlio Vilmar Gesser.
* Copyright (C) 2011, 2013-2018 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.symbolsolver.utils;
import com.github.javaparser.JavaParser;
import com.github.javaparser.ParseProblemException;
import com.github.javaparser.ast.CompilationUnit;
import com.github.javaparser.symbolsolver.javaparsermodel.JavaParserFacade;
import com.github.javaparser.symbolsolver.model.resolution.TypeSolver;
import com.github.javaparser.symbolsolver.resolution.typesolvers.CombinedTypeSolver;
import com.github.javaparser.symbolsolver.resolution.typesolvers.JarTypeSolver;
import com.github.javaparser.symbolsolver.resolution.typesolvers.JavaParserTypeSolver;
import com.github.javaparser.symbolsolver.resolution.typesolvers.ReflectionTypeSolver;
import com.github.javaparser.utils.Log;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.nio.file.*;
import java.nio.file.attribute.BasicFileAttributes;
import java.util.HashSet;
import java.util.Optional;
import java.util.Set;
import java.util.logging.Level;
import static com.github.javaparser.utils.Utils.assertNotNull;
import static java.nio.file.FileVisitResult.CONTINUE;
import static java.nio.file.FileVisitResult.SKIP_SIBLINGS;
public class SymbolSourceRoot {
private static java.util.logging.Logger logger = java.util.logging.Logger.getLogger(JavaParserFacade.class.getCanonicalName());
private final Path root;
private CombinedTypeSolver typeSolver = new CombinedTypeSolver(new ReflectionTypeSolver(false));
public SymbolSourceRoot(Path root) {
assertNotNull(root);
if (!Files.isDirectory(root)) {
throw new IllegalArgumentException("Only directories are allowed as root path!");
}
this.root = root.normalize();
Log.info("New symbol source root at \"%s\"", this.root);
}
public TypeSolver walk() throws IOException {
Files.walkFileTree(root, new JavaSymbolSolverWalker());
Files.walkFileTree(root, new JarVisitor());
return typeSolver;
}
public Optional<TypeSolver> tryToWalk() {
try {
Files.walkFileTree(root, new JavaSymbolSolverWalker());
Files.walkFileTree(root, new JarVisitor());
return Optional.of(typeSolver);
} catch (IOException e) {
return Optional.empty();
}
}
public TypeSolver getTypeSolver() {
return typeSolver;
}
/**
* The path that was passed in the constructor.
*/
public Path getRoot() {
return root;
}
/**
* Walks the directory and adds the roots of the java files to the TypeSolver
*/
private class JavaSymbolSolverWalker extends SimpleFileVisitor<Path> {
private final Set<Path> roots = new HashSet<>();
@Override
public FileVisitResult visitFile(Path file, BasicFileAttributes attr) throws FileNotFoundException {
if (attr.isRegularFile()) {
PathMatcher matcher = FileSystems.getDefault().getPathMatcher("glob:**.java");
if (matcher.matches(file)) {
try {
Optional<Path> root = JavaParser.parse(file.toFile()).getStorage()
.map(CompilationUnit.Storage::getSourceRoot);
if (root.isPresent()) {
typeSolver.add(new JavaParserTypeSolver(root.get().toFile()));
roots.add(root.get());
logger.log(Level.FINE, "Added dir " + root.get() + " to the TypeSolver");
return SKIP_SIBLINGS;
}
} catch (ParseProblemException e) {
logger.log(Level.WARNING, "Unable to parse file " + file, e);
}
}
}
return CONTINUE;
}
@Override
public FileVisitResult preVisitDirectory(Path dir, BasicFileAttributes attrs) throws IOException {
if (Files.isHidden(dir) || roots.stream().anyMatch(dir::startsWith)) {
return SKIP_SIBLINGS;
}
return CONTINUE;
}
}
private class JarVisitor extends SimpleFileVisitor<Path> {
@Override
public FileVisitResult visitFile(Path file, BasicFileAttributes attr) {
if (attr.isRegularFile()) {
PathMatcher matcher = FileSystems.getDefault().getPathMatcher("glob:**.jar");
if (matcher.matches(file)) {
try {
typeSolver.add(new JarTypeSolver(file.toString()));
} catch (IOException e) {
logger.log(Level.WARNING, "IOException for file " + file, e);
}
}
}
return CONTINUE;
}
}
}
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