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package soot;
/*-
* #%L
* Soot - a J*va Optimization Framework
* %%
* Copyright (C) 2003 Ondrej Lhotak
* %%
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation, either version 2.1 of the
* License, or (at your option) any later version.
*
* This program 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 General Lesser Public License for more details.
*
* You should have received a copy of the GNU General Lesser Public
* License along with this program. If not, see
* .
* #L%
*/
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.StringTokenizer;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import soot.options.Options;
import soot.tagkit.JimpleLineNumberTag;
import soot.tagkit.Tag;
import soot.toolkits.graph.UnitGraph;
import soot.util.Chain;
import soot.util.DeterministicHashMap;
/**
* Prints out a class and all its methods.
*/
public class Printer {
private static final Logger logger = LoggerFactory.getLogger(Printer.class);
public Printer(Singletons.Global g) {
}
public static Printer v() {
return G.v().soot_Printer();
}
final private static char fileSeparator = System.getProperty("file.separator").charAt(0);
public static final int USE_ABBREVIATIONS = 0x0001, ADD_JIMPLE_LN = 0x0010;
public boolean useAbbreviations() {
return (options & USE_ABBREVIATIONS) != 0;
}
public boolean addJimpleLn() {
return (options & ADD_JIMPLE_LN) != 0;
}
int options = 0;
public void setOption(int opt) {
options |= opt;
}
public void clearOption(int opt) {
options &= ~opt;
}
int jimpleLnNum = 0; // actual line number
public int getJimpleLnNum() {
return jimpleLnNum;
}
public void setJimpleLnNum(int newVal) {
jimpleLnNum = newVal;
}
public void incJimpleLnNum() {
jimpleLnNum++;
// logger.debug("jimple Ln Num: "+jimpleLnNum);
}
public void printTo(SootClass cl, PrintWriter out) {
// add jimple line number tags
setJimpleLnNum(1);
// Print class name + modifiers
{
StringTokenizer st = new StringTokenizer(Modifier.toString(cl.getModifiers()));
while (st.hasMoreTokens()) {
String tok = st.nextToken();
if (cl.isInterface() && tok.equals("abstract")) {
continue;
}
out.print(tok + " ");
}
String classPrefix = "";
if (!cl.isInterface()) {
classPrefix = classPrefix + " class";
classPrefix = classPrefix.trim();
}
out.print(classPrefix + " " + Scene.v().quotedNameOf(cl.getName()) + "");
}
// Print extension
{
if (cl.hasSuperclass()) {
out.print(" extends " + Scene.v().quotedNameOf(cl.getSuperclass().getName()) + "");
}
}
// Print interfaces
{
Iterator interfaceIt = cl.getInterfaces().iterator();
if (interfaceIt.hasNext()) {
out.print(" implements ");
out.print("" + Scene.v().quotedNameOf(interfaceIt.next().getName()) + "");
while (interfaceIt.hasNext()) {
out.print(",");
out.print(" " + Scene.v().quotedNameOf(interfaceIt.next().getName()) + "");
}
}
}
out.println();
incJimpleLnNum();
/*
* if (!addJimpleLn()) { Iterator clTagsIt = cl.getTags().iterator(); while (clTagsIt.hasNext()) { final Tag t =
* (Tag)clTagsIt.next(); out.println(t); } }
*/
out.println("{");
incJimpleLnNum();
if (Options.v().print_tags_in_output()) {
Iterator cTagIterator = cl.getTags().iterator();
while (cTagIterator.hasNext()) {
Tag t = cTagIterator.next();
out.print("/*");
out.print(t.toString());
out.println("*/");
}
}
// Print fields
{
Iterator fieldIt = cl.getFields().iterator();
if (fieldIt.hasNext()) {
while (fieldIt.hasNext()) {
SootField f = fieldIt.next();
if (f.isPhantom()) {
continue;
}
if (Options.v().print_tags_in_output()) {
Iterator fTagIterator = f.getTags().iterator();
while (fTagIterator.hasNext()) {
Tag t = fTagIterator.next();
out.print("/*");
out.print(t.toString());
out.println("*/");
}
}
out.println(" " + f.getDeclaration() + ";");
if (addJimpleLn()) {
setJimpleLnNum(addJimpleLnTags(getJimpleLnNum(), f));
}
// incJimpleLnNum();
}
}
}
// Print methods
{
Iterator methodIt = cl.methodIterator();
if (methodIt.hasNext()) {
if (cl.getMethodCount() != 0) {
out.println();
incJimpleLnNum();
}
while (methodIt.hasNext()) {
SootMethod method = methodIt.next();
if (method.isPhantom()) {
continue;
}
if (!Modifier.isAbstract(method.getModifiers()) && !Modifier.isNative(method.getModifiers())) {
if (!method.hasActiveBody()) {
method.retrieveActiveBody(); // force loading the body
if (!method.hasActiveBody()) {
throw new RuntimeException("method " + method.getName() + " has no active body!");
}
} else if (Options.v().print_tags_in_output()) {
Iterator mTagIterator = method.getTags().iterator();
while (mTagIterator.hasNext()) {
Tag t = mTagIterator.next();
out.print("/*");
out.print(t.toString());
out.println("*/");
}
}
printTo(method.getActiveBody(), out);
if (methodIt.hasNext()) {
out.println();
incJimpleLnNum();
}
} else {
if (Options.v().print_tags_in_output()) {
Iterator mTagIterator = method.getTags().iterator();
while (mTagIterator.hasNext()) {
Tag t = mTagIterator.next();
out.print("/*");
out.print(t.toString());
out.println("*/");
}
}
out.print(" ");
out.print(method.getDeclaration());
out.println(";");
incJimpleLnNum();
if (methodIt.hasNext()) {
out.println();
incJimpleLnNum();
}
}
}
}
}
out.println("}");
incJimpleLnNum();
}
/**
* Prints out the method corresponding to b Body, (declaration and body), in the textual format corresponding to the IR
* used to encode b body.
*
* @param out
* a PrintWriter instance to print to.
*/
public void printTo(Body b, PrintWriter out) {
// b.validate();
boolean isPrecise = !useAbbreviations();
String decl = b.getMethod().getDeclaration();
out.println(" " + decl);
// incJimpleLnNum();
// only print tags if not printing attributes in a file
if (!addJimpleLn()) {
/*
* for( Iterator tIt = b.getMethod().getTags().iterator(); tIt.hasNext(); ) { final Tag t = (Tag) tIt.next();
* out.println(t); incJimpleLnNum();
*
* }
*/
}
if (addJimpleLn()) {
setJimpleLnNum(addJimpleLnTags(getJimpleLnNum(), b.getMethod()));
// logger.debug("added jimple ln tag for method: "+b.getMethod().toString()+"
// "+b.getMethod().getDeclaringClass().getName());
}
out.println(" {");
incJimpleLnNum();
UnitGraph unitGraph = new soot.toolkits.graph.BriefUnitGraph(b);
LabeledUnitPrinter up;
if (isPrecise) {
up = new NormalUnitPrinter(b);
} else {
up = new BriefUnitPrinter(b);
}
if (addJimpleLn()) {
up.setPositionTagger(new AttributesUnitPrinter(getJimpleLnNum()));
}
printLocalsInBody(b, up);
printStatementsInBody(b, out, up, unitGraph);
out.println(" }");
incJimpleLnNum();
}
/** Prints the given JimpleBody to the specified PrintWriter. */
private void printStatementsInBody(Body body, java.io.PrintWriter out, LabeledUnitPrinter up, UnitGraph unitGraph) {
Chain units = body.getUnits();
Unit previousStmt;
for (Unit currentStmt : units) {
previousStmt = currentStmt;
// Print appropriate header.
{
// Put an empty line if the previous node was a branch node, the current node is a join node
// or the previous statement does not have body statement as a successor, or if
// body statement has a label on it
if (currentStmt != units.getFirst()) {
if (unitGraph.getSuccsOf(previousStmt).size() != 1 || unitGraph.getPredsOf(currentStmt).size() != 1
|| up.labels().containsKey(currentStmt)) {
up.newline();
} else {
// Or if the previous node does not have body statement as a successor.
List succs = unitGraph.getSuccsOf(previousStmt);
if (succs.get(0) != currentStmt) {
up.newline();
}
}
}
if (up.labels().containsKey(currentStmt)) {
up.unitRef(currentStmt, true);
up.literal(":");
up.newline();
}
if (up.references().containsKey(currentStmt)) {
up.unitRef(currentStmt, false);
}
}
up.startUnit(currentStmt);
currentStmt.toString(up);
up.endUnit(currentStmt);
up.literal(";");
up.newline();
// only print them if not generating attributes files
// because they mess up line number
// if (!addJimpleLn()) {
if (Options.v().print_tags_in_output()) {
Iterator tagIterator = currentStmt.getTags().iterator();
while (tagIterator.hasNext()) {
Tag t = tagIterator.next();
up.noIndent();
up.literal("/*");
up.literal(t.toString());
up.literal("*/");
up.newline();
}
/*
* Iterator udIt = currentStmt.getUseAndDefBoxes().iterator(); while (udIt.hasNext()) { ValueBox temp =
* (ValueBox)udIt.next(); Iterator vbtags = temp.getTags().iterator(); while (vbtags.hasNext()) { Tag t = (Tag)
* vbtags.next(); up.noIndent(); up.literal("VB Tag: "+t.toString()); up.newline(); } }
*/
}
}
out.print(up.toString());
if (addJimpleLn()) {
setJimpleLnNum(up.getPositionTagger().getEndLn());
}
// Print out exceptions
{
Iterator trapIt = body.getTraps().iterator();
if (trapIt.hasNext()) {
out.println();
incJimpleLnNum();
}
while (trapIt.hasNext()) {
Trap trap = trapIt.next();
out.println(" catch " + Scene.v().quotedNameOf(trap.getException().getName()) + " from "
+ up.labels().get(trap.getBeginUnit()) + " to " + up.labels().get(trap.getEndUnit()) + " with "
+ up.labels().get(trap.getHandlerUnit()) + ";");
incJimpleLnNum();
}
}
}
private int addJimpleLnTags(int lnNum, SootMethod meth) {
meth.addTag(new JimpleLineNumberTag(lnNum));
lnNum++;
return lnNum;
}
private int addJimpleLnTags(int lnNum, SootField f) {
f.addTag(new JimpleLineNumberTag(lnNum));
lnNum++;
return lnNum;
}
/** Prints the given JimpleBody to the specified PrintWriter. */
private void printLocalsInBody(Body body, UnitPrinter up) {
// Print out local variables
{
Map> typeToLocals = new DeterministicHashMap>(body.getLocalCount() * 2 + 1, 0.7f);
// Collect locals
{
Iterator localIt = body.getLocals().iterator();
while (localIt.hasNext()) {
Local local = localIt.next();
List localList;
Type t = local.getType();
if (typeToLocals.containsKey(t)) {
localList = typeToLocals.get(t);
} else {
localList = new ArrayList();
typeToLocals.put(t, localList);
}
localList.add(local);
}
}
// Print locals
{
Iterator typeIt = typeToLocals.keySet().iterator();
while (typeIt.hasNext()) {
Type type = typeIt.next();
List localList = typeToLocals.get(type);
Object[] locals = localList.toArray();
up.type(type);
up.literal(" ");
for (int k = 0; k < locals.length; k++) {
if (k != 0) {
up.literal(", ");
}
up.local((Local) locals[k]);
}
up.literal(";");
up.newline();
}
}
if (!typeToLocals.isEmpty()) {
up.newline();
}
}
}
}
