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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;
import com.github.javaparser.JavaParser;
import com.github.javaparser.ParseException;
import com.github.javaparser.ast.CompilationUnit;
import com.github.javaparser.ast.Node;
import com.github.javaparser.ast.PackageDeclaration;
import com.github.javaparser.ast.body.ClassOrInterfaceDeclaration;
import com.github.javaparser.ast.body.MethodDeclaration;
import com.github.javaparser.ast.body.VariableDeclarator;
import com.github.javaparser.ast.expr.Expression;
import com.github.javaparser.ast.expr.MethodCallExpr;
import com.github.javaparser.ast.ImportDeclaration;
import com.github.javaparser.ast.stmt.Statement;
import com.github.javaparser.symbolsolver.javaparsermodel.JavaParserFacade;
import com.github.javaparser.symbolsolver.model.declarations.TypeDeclaration;
import com.github.javaparser.symbolsolver.model.resolution.SymbolReference;
import com.github.javaparser.symbolsolver.model.resolution.TypeSolver;
import com.github.javaparser.symbolsolver.model.typesystem.ReferenceType;
import com.github.javaparser.symbolsolver.model.typesystem.Type;
import java.io.File;
import java.io.IOException;
import java.io.PrintStream;
import java.util.LinkedList;
import java.util.List;
import static com.github.javaparser.symbolsolver.javaparser.Navigator.getParentNode;
/**
* It prints information extracted from a source file. It is mainly intended as an example usage of JavaSymbolSolver.
*
* @author Federico Tomassetti
*/
public class SourceFileInfoExtractor {
private TypeSolver typeSolver;
private int ok = 0;
private int ko = 0;
private int unsupported = 0;
private boolean printFileName = true;
private PrintStream out = System.out;
private PrintStream err = System.err;
public void setVerbose(boolean verbose) {
this.verbose = verbose;
}
private boolean verbose = false;
public void setPrintFileName(boolean printFileName) {
this.printFileName = printFileName;
}
public void clear() {
ok = 0;
ko = 0;
unsupported = 0;
}
public void setOut(PrintStream out) {
this.out = out;
}
public void setErr(PrintStream err) {
this.err = err;
}
public int getOk() {
return ok;
}
public int getUnsupported() {
return unsupported;
}
public int getKo() {
return ko;
}
private void solveTypeDecl(ClassOrInterfaceDeclaration node) {
TypeDeclaration typeDeclaration = JavaParserFacade.get(typeSolver).getTypeDeclaration(node);
if (typeDeclaration.isClass()) {
out.println("\n[ Class " + typeDeclaration.getQualifiedName() + " ]");
for (ReferenceType sc : typeDeclaration.asClass().getAllSuperClasses()) {
out.println(" superclass: " + sc.getQualifiedName());
}
for (ReferenceType sc : typeDeclaration.asClass().getAllInterfaces()) {
out.println(" interface: " + sc.getQualifiedName());
}
}
}
private void solve(Node node) {
if (node instanceof ClassOrInterfaceDeclaration) {
solveTypeDecl((ClassOrInterfaceDeclaration) node);
} else if (node instanceof Expression) {
if ((getParentNode(node) instanceof ImportDeclaration) || (getParentNode(node) instanceof Expression)
|| (getParentNode(node) instanceof MethodDeclaration)
|| (getParentNode(node) instanceof PackageDeclaration)) {
// skip
} else if ((getParentNode(node) instanceof Statement) || (getParentNode(node) instanceof VariableDeclarator)) {
try {
Type ref = JavaParserFacade.get(typeSolver).getType(node);
out.println(" Line " + node.getRange().get().begin.line + ") " + node + " ==> " + ref.describe());
ok++;
} catch (UnsupportedOperationException upe) {
unsupported++;
err.println(upe.getMessage());
throw upe;
} catch (RuntimeException re) {
ko++;
err.println(re.getMessage());
throw re;
}
}
}
}
private void solveMethodCalls(Node node) {
if (node instanceof MethodCallExpr) {
out.println(" Line " + node.getBegin().get().line + ") " + node + " ==> " + toString((MethodCallExpr) node));
}
for (Node child : node.getChildNodes()) {
solveMethodCalls(child);
}
}
private String toString(MethodCallExpr node) {
try {
return toString(JavaParserFacade.get(typeSolver).solve(node));
} catch (Exception e) {
if (verbose) {
System.err.println("Error resolving call at L" + node.getBegin().get().line + ": " + node);
e.printStackTrace();
}
return "ERROR";
}
}
private String toString(SymbolReference<com.github.javaparser.symbolsolver.model.declarations.MethodDeclaration> methodDeclarationSymbolReference) {
if (methodDeclarationSymbolReference.isSolved()) {
return methodDeclarationSymbolReference.getCorrespondingDeclaration().getQualifiedSignature();
} else {
return "UNSOLVED";
}
}
private List<Node> collectAllNodes(Node node) {
List<Node> nodes = new LinkedList<>();
collectAllNodes(node, nodes);
nodes.sort((n1, n2) -> n1.getBegin().get().compareTo(n2.getBegin().get()));
return nodes;
}
private void collectAllNodes(Node node, List<Node> nodes) {
nodes.add(node);
node.getChildNodes().forEach(c -> collectAllNodes(c, nodes));
}
public void solve(File file) throws IOException, ParseException {
if (file.isDirectory()) {
for (File f : file.listFiles()) {
solve(f);
}
} else {
if (file.getName().endsWith(".java")) {
if (printFileName) {
out.println("- parsing " + file.getAbsolutePath());
}
CompilationUnit cu = JavaParser.parse(file);
List<Node> nodes = collectAllNodes(cu);
nodes.forEach(n -> solve(n));
}
}
}
public void solveMethodCalls(File file) throws IOException, ParseException {
if (file.isDirectory()) {
for (File f : file.listFiles()) {
solveMethodCalls(f);
}
} else {
if (file.getName().endsWith(".java")) {
if (printFileName) {
out.println("- parsing " + file.getAbsolutePath());
}
CompilationUnit cu = JavaParser.parse(file);
solveMethodCalls(cu);
}
}
}
public void setTypeSolver(TypeSolver typeSolver) {
this.typeSolver = typeSolver;
}
}
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