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Merge branch 'bytecode2' of ssh://gohorb.ba-horb.de/bahome/projekt/git/JavaCompilerCore into unify-test

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This commit is contained in:
Martin Plümicke 2018-11-21 23:17:17 +01:00
commit 4da4966b86
15 changed files with 528 additions and 90 deletions
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8
pom.xml
View File

@ -38,11 +38,19 @@
<artifactId>reflections</artifactId>
<version>0.9.11</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.ow2.asm/asm -->
<dependency>
<groupId>org.ow2.asm</groupId>
<artifactId>asm</artifactId>
<version>7.0</version>
</dependency>
<!--
<dependency>
<groupId>org.ow2.asm</groupId>
<artifactId>asm-all</artifactId>
<version>[4.0.0,)</version>
</dependency>
-->
<!--
<dependency>
<groupId>org.bitbucket.mstrobel</groupId>

48
src/de/dhbwstuttgart/bytecode/BytecodeGen.java
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@ -125,6 +125,7 @@ public class BytecodeGen implements ASTVisitor {
for(ResultSet rs : listOfResultSets) {
superClass = classOrInterface.getSuperClass().acceptTV(new TypeToDescriptor());
resultSet = rs;
tphExtractor.setResultSet(resultSet);
// Nur einmal ausführen!!
if(!isVisited) {
classOrInterface.accept(tphExtractor);
@ -558,52 +559,5 @@ public class BytecodeGen implements ASTVisitor {
throw new NotImplementedException();
}
public class TPHExtractor extends AbstractASTWalker{
// Alle TPHs der Felder werden iKopf der Klasse definiert
// alle TPHs der Klasse: (TPH, is in Method?)
final HashMap<TypePlaceholder,Boolean> allTPHS = new HashMap<>();
MethodAndTPH methodAndTph;
Boolean inMethod = false;
public final ArrayList<MethodAndTPH> ListOfMethodsAndTph = new ArrayList<>();
final ArrayList<GenericInsertPair> allPairs = new ArrayList<>();
public final ArrayList<TPHConstraint> allCons = new ArrayList<>();
@Override
public void visit(TypePlaceholder tph) {
if(resultSet.resolveType(tph).resolvedType instanceof TypePlaceholder) {
TypePlaceholder resolvedTPH = (TypePlaceholder) resultSet.resolveType(tph).resolvedType;
if(inMethod)
methodAndTph.getTphs().add(resolvedTPH);
allTPHS.put(resolvedTPH,inMethod);
resultSet.resolveType(tph).additionalGenerics.forEach(ag ->{
if(ag.contains(resolvedTPH)&&ag.TA1.equals(resolvedTPH)&&!contains(allPairs,ag)) {
if(inMethod)
methodAndTph.getPairs().add(ag);
allPairs.add(ag);
TPHConstraint con = new ExtendsConstraint(ag.TA1.getName(), ag.TA2.getName(), Relation.EXTENDS);
allCons.add(con);
}
});
}
}
private boolean contains(ArrayList<GenericInsertPair> pairs, GenericInsertPair genPair) {
for(int i=0; i<pairs.size();++i) {
GenericInsertPair p = pairs.get(i);
if(p.TA1.equals(genPair.TA1) && p.TA2.equals(genPair.TA2))
return true;
}
return false;
}
@Override
public void visit(Method method) {
inMethod = true;
methodAndTph = new MethodAndTPH(method.name);
super.visit(method);
inMethod = false;
ListOfMethodsAndTph.add(methodAndTph);
}
}
}

10
src/de/dhbwstuttgart/bytecode/BytecodeGenMethod.java
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@ -805,10 +805,12 @@ public class BytecodeGenMethod implements StatementVisitor {
if(methodRefl != null && !methodRefl.getReturnType().isPrimitive()) {
if(methodRefl.getReturnType().equals(Object.class)) {
String checkCast = getResolvedType(methodCall.getType());
int pos = checkCast.length();
if(checkCast.contains("<"))
pos = checkCast.indexOf("<");
mv.visitTypeInsn(Opcodes.CHECKCAST,checkCast.substring(0,pos));
if(!checkCast.contains("TPH ")) {
int pos = checkCast.length();
if(checkCast.contains("<"))
pos = checkCast.indexOf("<");
mv.visitTypeInsn(Opcodes.CHECKCAST,checkCast.substring(0,pos));
}
}
if(isBinaryExp)
doUnboxing(getResolvedType(methodCall.getType()));

78
src/de/dhbwstuttgart/bytecode/TPHExtractor.java Normal file
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@ -0,0 +1,78 @@
/**
*
*/
package de.dhbwstuttgart.bytecode;
import java.util.ArrayList;
import java.util.HashMap;
import de.dhbwstuttgart.bytecode.constraint.ExtendsConstraint;
import de.dhbwstuttgart.bytecode.constraint.TPHConstraint;
import de.dhbwstuttgart.bytecode.constraint.TPHConstraint.Relation;
import de.dhbwstuttgart.bytecode.utilities.MethodAndTPH;
import de.dhbwstuttgart.syntaxtree.AbstractASTWalker;
import de.dhbwstuttgart.syntaxtree.Method;
import de.dhbwstuttgart.syntaxtree.type.TypePlaceholder;
import de.dhbwstuttgart.typeinference.result.GenericInsertPair;
import de.dhbwstuttgart.typeinference.result.ResultSet;
/**
* @author Fayez Abu Alia
*
*/
public class TPHExtractor extends AbstractASTWalker{
// Alle TPHs der Felder werden iKopf der Klasse definiert
// alle TPHs der Klasse: (TPH, is in Method?)
final HashMap<TypePlaceholder,Boolean> allTPHS = new HashMap<>();
MethodAndTPH methodAndTph;
Boolean inMethod = false;
public final ArrayList<MethodAndTPH> ListOfMethodsAndTph = new ArrayList<>();
final ArrayList<GenericInsertPair> allPairs = new ArrayList<>();
public final ArrayList<TPHConstraint> allCons = new ArrayList<>();
private ResultSet resultSet;
public TPHExtractor() {
}
public void setResultSet(ResultSet resultSet) {
this.resultSet = resultSet;
}
@Override
public void visit(TypePlaceholder tph) {
if(resultSet.resolveType(tph).resolvedType instanceof TypePlaceholder) {
TypePlaceholder resolvedTPH = (TypePlaceholder) resultSet.resolveType(tph).resolvedType;
if(inMethod)
methodAndTph.getTphs().add(resolvedTPH.getName());
allTPHS.put(resolvedTPH,inMethod);
resultSet.resolveType(tph).additionalGenerics.forEach(ag ->{
if(ag.contains(resolvedTPH)&&ag.TA1.equals(resolvedTPH)&&!contains(allPairs,ag)) {
if(inMethod)
methodAndTph.getPairs().add(ag);
allPairs.add(ag);
TPHConstraint con = new ExtendsConstraint(ag.TA1.getName(), ag.TA2.getName(), Relation.EXTENDS);
allCons.add(con);
}
});
}
}
private boolean contains(ArrayList<GenericInsertPair> pairs, GenericInsertPair genPair) {
for(int i=0; i<pairs.size();++i) {
GenericInsertPair p = pairs.get(i);
if(p.TA1.equals(genPair.TA1) && p.TA2.equals(genPair.TA2))
return true;
}
return false;
}
@Override
public void visit(Method method) {
inMethod = true;
methodAndTph = new MethodAndTPH(method.name);
super.visit(method);
inMethod = false;
ListOfMethodsAndTph.add(methodAndTph);
}
}

4
src/de/dhbwstuttgart/bytecode/utilities/MethodAndTPH.java
View File

@ -8,14 +8,14 @@ import de.dhbwstuttgart.typeinference.result.GenericInsertPair;
public class MethodAndTPH {
private String name;
private final ArrayList<TypePlaceholder> tphs = new ArrayList<>();
private final ArrayList<String> tphs = new ArrayList<>();
private final ArrayList<GenericInsertPair> pairs = new ArrayList<>();
public MethodAndTPH(String name) {
this.name = name;
}
public ArrayList<TypePlaceholder> getTphs() {
public ArrayList<String> getTphs() {
return tphs;
}

178
src/de/dhbwstuttgart/bytecode/utilities/Simplify.java
View File

@ -7,7 +7,7 @@ import java.util.LinkedList;
import org.objectweb.asm.Type;
import de.dhbwstuttgart.bytecode.BytecodeGen.TPHExtractor;
import de.dhbwstuttgart.bytecode.TPHExtractor;
import de.dhbwstuttgart.bytecode.constraint.ExtendsConstraint;
import de.dhbwstuttgart.bytecode.constraint.TPHConstraint;
import de.dhbwstuttgart.bytecode.constraint.TPHConstraint.Relation;
@ -16,7 +16,7 @@ import de.dhbwstuttgart.syntaxtree.type.TypePlaceholder;
public class Simplify {
public static HashMap<TPHConstraint, HashSet<String>> simplifyConstraints(String name, TPHExtractor tphExtractor) {
// 1. check if there are any cycles like L<R and R<L:
// 1. check if there are any simple cycles like L<R and R<L:
// a) yes => set L=R and:
// * remove both constraints
// * substitute L with R in all constraint
@ -28,8 +28,10 @@ public class Simplify {
// b) no
// 3. is
// all constraints that will be simplified
ArrayList<TPHConstraint> allCons = tphExtractor.allCons;
ArrayList<TPHConstraint> consToRemove = new ArrayList<>();
// step 1:
for(TPHConstraint c : allCons) {
@ -39,12 +41,16 @@ public class Simplify {
TPHConstraint revCon = getReverseConstraint(allCons,left,right);
if(revCon != null) {
revCon.setRel(Relation.EQUAL);
// the reverse constraint is removed because
// otherwise there is twice the same constraint
// (e.g. A<B and B<A => A=B and B=A)
consToRemove.add(revCon);
c.setRel(Relation.EQUAL);
substituteTPH(allCons,left, right);
}
}
}
System.out.println();
System.out.println("NEW ALL CONST: " + allCons.size());
allCons.forEach(c->System.out.println(c.toString()));
@ -59,17 +65,100 @@ public class Simplify {
System.out.println("----------------");
HashMap<TPHConstraint, HashSet<String>> result = new HashMap<>();
// check if there is any long cycle (e.g. A<B<C<A)
// to save all types that are in relation
LinkedList<String> allTypes = new LinkedList<>();
// we will put all constraints which are in the cycle, in this ArrayList.
// Later these contraints will be converted to equal-constraints
ArrayList<TPHConstraint> constraints = new ArrayList<>(size);
int visited = 0;
// contains all constraints
HashMap<String,String> ss1 = new HashMap<>();
for(TPHConstraint constr : allCons) {
ss1.put(constr.getLeft(), constr.getRight());
}
for(TPHConstraint c : allCons) {
if(visited >= size)
break;
// Only extends-constraints will be checked
if(c.getRel() == Relation.EXTENDS) {
++visited;
String left = c.getLeft();
String right = c.getRight();
// put the types in linked list
allTypes.add(left);
allTypes.add(right);
constraints.add(c);
boolean isCycle = false;
// iterate through the map to check if there is a cycle
while(ss1.containsKey(right)) {
++visited;
String oldRight = right;
right = ss1.get(right);
TPHConstraint toAdd = getConstraint(oldRight, right, allCons);
if(toAdd != null)
constraints.add(toAdd);
if(left.equals(right)) {
isCycle = true;
break;
}
allTypes.add(right);
}
if(isCycle) {
// convert all constraints to equal constraints
setAllEqual(constraints);
// these constraints will be removed from allCons
consToRemove.addAll(constraints);
// all equal types will be substitute with one type
substituteAllTPH(allCons,constraints,left);
HashSet<String> eq = new HashSet<>();
// put all equal types in a set
for(String t:allTypes) {
eq.add(t);
}
// generate a new constraint (left < Object)
TPHConstraint constraint = new ExtendsConstraint(left, Type.getInternalName(Object.class), Relation.EXTENDS);
// put the generated constraint and its equal set into result set
result.put(constraint, eq);
constraints.clear();
allTypes.clear();
}
}
}
// build an equal set that contains all types
// which are equal and for each equal constraint put left side and right side
// in this set Then generate a constraint type < Object and put it
// with the equal set into the result.
for(TPHConstraint c : allCons) {
if(c.getRel()==Relation.EQUAL) {
HashSet<String> equalTPHs = getEqualsTPHs(result, c);
TPHConstraint constraint = getKeyConstraint(result,c);
equalTPHs.add(c.getLeft());
equalTPHs.add(c.getRight());
result.put(constraint, equalTPHs);
if(!isTPHInResEqual(result, c.getLeft())) {
HashSet<String> equalTPHs = getEqualsTPHs(result, c);
TPHConstraint constraint = getKeyConstraint(result,c);
equalTPHs.add(c.getLeft());
equalTPHs.add(c.getRight());
result.put(constraint, equalTPHs);
}
consToRemove.add(c);
size--;
}
}
System.out.println("Step 2 Result: ");
result.forEach((c,hs)->{
System.out.print(c.toString() + " -> ");
@ -79,7 +168,9 @@ public class Simplify {
System.out.println();
});
System.out.println("----------------");
// remove all equal-constraints
allCons.removeAll(consToRemove);
// add all generated constraints to allCons
allCons.addAll(result.keySet());
if(!allCons.isEmpty() && allCons.size()<2) {
@ -91,19 +182,23 @@ public class Simplify {
}
size += result.keySet().size();
// all constraints which have Object on the right side will
// be ignored, because they are simplified and can not be changed.
for(TPHConstraint c : allCons) {
if(c.getRight().equals(Type.getInternalName(Object.class)))
size--;
}
ArrayList<TypePlaceholder> methodTphs = new ArrayList<>();
// get all tph of the method
ArrayList<String> methodTphs = new ArrayList<>();
for(MethodAndTPH m : tphExtractor.ListOfMethodsAndTph) {
if(m.getName().equals(name)) {
methodTphs = m.getTphs();
break;
}
}
// check if there are multiple constraint with the same left side.
// if yes => check if the super type in the method, if not
// then ignore it.
HashMap<String, String> subAndSuper = new HashMap<>();
for(TPHConstraint c : allCons) {
if(subAndSuper.containsKey(c.getLeft())) {
@ -155,6 +250,8 @@ public class Simplify {
// Die größte Supertype
String superTphRes = tphInRel.getLast();
// if there is any constraint X < subTph, then
// add X at the beginning of the list.
while(subAndSuper.containsValue(subTphRes)) {
for(String tph : subAndSuper.keySet()) {
if(containTPH(methodTphs,tph) && subAndSuper.get(tph).equals(subTphRes)) {
@ -165,12 +262,18 @@ public class Simplify {
if(subTphRes.equals(tphInRel.getFirst())) {
break;
}
if(isTPHInConstraint(result, subTphRes))
break;
tphInRel.addFirst(subTphRes);
numOfVisitedPairs++;
}
subTphRes = tphInRel.getFirst();
// if the last type in the list not a type in method-types
// then find the last type in front of this type, which is
// a type in method-types
int i = 2;
while(!containTPH(methodTphs,superTphRes) && (tphInRel.size()-i) >0) {
superTphRes = tphInRel.get(tphInRel.size()-i);
@ -181,13 +284,14 @@ public class Simplify {
result.put(new ExtendsConstraint(subTphRes, Type.getInternalName(Object.class), Relation.EXTENDS), null);
} else {
result.put(new ExtendsConstraint(subTphRes, superTphRes, Relation.EXTENDS), null);
result.put(new ExtendsConstraint(superTphRes, Type.getInternalName(Object.class), Relation.EXTENDS), null);
if(!isTPHInConstraint(result, superTphRes))
result.put(new ExtendsConstraint(superTphRes, Type.getInternalName(Object.class), Relation.EXTENDS), null);
}
}
for(TypePlaceholder tph : methodTphs) {
if(!isTPHInConstraint(result, tph.getName())) {
result.put(new ExtendsConstraint(tph.getName(), Type.getInternalName(Object.class), Relation.EXTENDS), null);
for(String tph : methodTphs) {
if(!isTPHInConstraint(result, tph)) {
result.put(new ExtendsConstraint(tph, Type.getInternalName(Object.class), Relation.EXTENDS), null);
}
}
@ -211,6 +315,44 @@ public class Simplify {
return result;
}
private static TPHConstraint getConstraint(String oldRight, String right, ArrayList<TPHConstraint> allCons) {
for(TPHConstraint c : allCons) {
if(c.getLeft().equals(oldRight) && c.getRight().equals(right))
return c;
}
return null;
}
private static boolean isTPHInResEqual(HashMap<TPHConstraint, HashSet<String>> result, String left) {
for(HashSet<String> eq : result.values()) {
if(eq.contains(left)) {
return true;
}
}
return false;
}
private static void substituteAllTPH(ArrayList<TPHConstraint> allCons, ArrayList<TPHConstraint> constraints,
String first) {
for(TPHConstraint c : allCons) {
for(TPHConstraint c2 : constraints) {
if(c.getRel() == Relation.EXTENDS) {
if(c2.getLeft().equals(c.getLeft()) || c2.getRight().equals(c.getLeft()))
c.setLeft(first);
if(c2.getLeft().equals(c.getRight()) || c2.getRight().equals(c.getRight()))
c.setRight(first);
}
}
}
}
private static void setAllEqual(ArrayList<TPHConstraint> constraints) {
for(TPHConstraint c:constraints) {
c.setRel(Relation.EQUAL);
}
}
public static HashMap<TPHConstraint, HashSet<String>> simplifyContraints(HashMap<TPHConstraint, HashSet<String>> allConstraints) {
// 1. check if there are any cycles like L<R and R<L:
// a) yes => set L=R and:
@ -406,9 +548,9 @@ public class Simplify {
return false;
}
private static boolean containTPH(ArrayList<TypePlaceholder> methodTphs, String sub) {
for(TypePlaceholder tph : methodTphs) {
if(tph.getName().equals(sub))
private static boolean containTPH(ArrayList<String> methodTphs, String sub) {
for(String tph : methodTphs) {
if(tph.equals(sub))
return true;
}
return false;

BIN
target/JavaTXcompiler-0.1-jar-with-dependencies.jar
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Binary file not shown.

4
target/repository/.gitignore vendored
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@ -1,4 +0,0 @@
# Ignore everything in this directory
*
# Except this file
!.gitignore

26
test/bytecode/FacultyTest.java
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@ -32,22 +32,24 @@ public class FacultyTest {
loader = new URLClassLoader(new URL[] {new URL("file://"+pathToClassFile)});
classToTest = loader.loadClass("Faculty");
instanceOfClass = classToTest.getDeclaredConstructor().newInstance();
// Method m = classToTest.getDeclaredMethod("m", Integer.class);
Field fact = classToTest.getDeclaredField("fact");
Method getFact = classToTest.getDeclaredMethod("getFact", Integer.class);
// Field fact = classToTest.getDeclaredField("fact");
// Class<?> lambda = m.invoke(instanceOfClass).getClass();
Class<?> lambda = fact.getType();
Method apply = lambda.getMethod("apply", Object.class);
//
// Class<?> lambda = fact.getType();
// System.out.println(fact.getType().getName());
// Method apply = lambda.getMethod("apply", Object.class);
// System.out.println(lambda.getMethods()[0]);
// System.out.println(instanceOfClass.toString());
// // Damit man auf die Methode zugreifen kann
apply.setAccessible(true);
// apply.setAccessible(true);
// Field value
Object fieldVal = fact.get(instanceOfClass);
// Object fieldVal = fact.get(instanceOfClass);
Integer i = 3;
Method applyFromField = fieldVal.getClass().getDeclaredMethod("apply", Object.class);
applyFromField.setAccessible(true);
Integer result = (Integer) applyFromField.invoke(instanceOfClass, i);
// Integer result = (Integer) m.invoke(instanceOfClass,i);
// Method applyFromField = fieldVal.getClass().getDeclaredMethod("apply", Object.class);
// applyFromField.setAccessible(true);
// Integer result = (Integer) apply.invoke(lambda,i);
Integer result = (Integer) getFact.invoke(instanceOfClass,i);
assertEquals(6, result);
}

2
test/bytecode/LambdaTest.java
View File

@ -40,7 +40,7 @@ public class LambdaTest {
apply.setAccessible(true);
Integer i = 77;
System.out.println(m.invoke(instanceOfClass).toString());
Integer result = (Integer) apply.invoke(m.invoke(instanceOfClass), i);
assertEquals(77, result);

4
test/bytecode/javFiles/Faculty.jav
View File

@ -13,6 +13,10 @@ public class Faculty {
};
}
public getFact(x) {
return fact.apply(x);
}
// m (x) {
//
//// var fact = (x) -> {

4
test/bytecode/javFiles/Tph.jav
View File

@ -2,8 +2,8 @@ public class Tph {
m(a,b){
var c = m2(b);
return a;
// return m2(b);
// return a;
return m2(b);
}
m2(b){

76
test/bytecode/simplifyalgo/CycleTest.java Normal file
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@ -0,0 +1,76 @@
/**
*
*/
package bytecode.simplifyalgo;
import static org.junit.Assert.*;
import java.util.HashMap;
import java.util.HashSet;
import org.junit.BeforeClass;
import org.junit.Test;
import org.objectweb.asm.Type;
import de.dhbwstuttgart.bytecode.TPHExtractor;
import de.dhbwstuttgart.bytecode.constraint.ExtendsConstraint;
import de.dhbwstuttgart.bytecode.constraint.TPHConstraint;
import de.dhbwstuttgart.bytecode.constraint.TPHConstraint.Relation;
import de.dhbwstuttgart.bytecode.utilities.MethodAndTPH;
import de.dhbwstuttgart.bytecode.utilities.Simplify;
/**
* @author Fayez Abu Alia
*
*/
public class CycleTest {
private static TPHExtractor tphExtractor;
private static String methName;
/**
* @throws java.lang.Exception
*/
@BeforeClass
public static void setUpBeforeClass() throws Exception {
tphExtractor = new TPHExtractor();
// A < B
TPHConstraint c1 = new ExtendsConstraint("A", "B", Relation.EXTENDS);
// B < C
TPHConstraint c2 = new ExtendsConstraint("B", "C", Relation.EXTENDS);
// C < D
TPHConstraint c3 = new ExtendsConstraint("C", "D", Relation.EXTENDS);
// D < A
TPHConstraint c4 = new ExtendsConstraint("D", "A", Relation.EXTENDS);
// name
methName = "m";
MethodAndTPH mtph = new MethodAndTPH("m");
mtph.getTphs().add("A");
mtph.getTphs().add("B");
mtph.getTphs().add("C");
mtph.getTphs().add("D");
tphExtractor.ListOfMethodsAndTph.add(mtph);
tphExtractor.allCons.add(c1);
tphExtractor.allCons.add(c2);
tphExtractor.allCons.add(c3);
tphExtractor.allCons.add(c4);
}
@Test
public void test() {
HashMap<TPHConstraint, HashSet<String>> result = new HashMap<>();
HashSet<String> equals = new HashSet<>();
equals.add("A");
equals.add("B");
equals.add("C");
equals.add("D");
TPHConstraint k = new ExtendsConstraint("A", Type.getInternalName(Object.class), Relation.EXTENDS);
result.put(k, equals);
HashMap<TPHConstraint, HashSet<String>> sim = Simplify.simplifyConstraints(methName, tphExtractor);
boolean areEquals = SimpleCycle.areMapsEqual(result, sim);
assertTrue(areEquals);
}
}

97
test/bytecode/simplifyalgo/SameLeftSide.java Normal file
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@ -0,0 +1,97 @@
package bytecode.simplifyalgo;
import static org.junit.Assert.*;
import java.util.HashMap;
import java.util.HashSet;
import org.junit.BeforeClass;
import org.junit.Test;
import org.objectweb.asm.Type;
import de.dhbwstuttgart.bytecode.TPHExtractor;
import de.dhbwstuttgart.bytecode.constraint.ExtendsConstraint;
import de.dhbwstuttgart.bytecode.constraint.TPHConstraint;
import de.dhbwstuttgart.bytecode.constraint.TPHConstraint.Relation;
import de.dhbwstuttgart.bytecode.utilities.MethodAndTPH;
import de.dhbwstuttgart.bytecode.utilities.Simplify;
import de.dhbwstuttgart.typedeployment.TypeInsertPlacer;
/**
*
* @author Fayez Abu Alia
*
*/
public class SameLeftSide {
// Typeplaceholders können nicht definiert werden, da die Konstruktor
// private ist => Test geht nicht
private static TPHExtractor tphExtractor;
private static String methName;
private static String methName2;
@BeforeClass
public static void setUpBeforeClass() throws Exception {
tphExtractor = new TPHExtractor();
// A < B
TPHConstraint c1 = new ExtendsConstraint("A", "B", Relation.EXTENDS);
// A < C
TPHConstraint c2 = new ExtendsConstraint("A", "C", Relation.EXTENDS);
// B < D
TPHConstraint c3 = new ExtendsConstraint("B", "D", Relation.EXTENDS);
// C < E
TPHConstraint c4 = new ExtendsConstraint("C", "E", Relation.EXTENDS);
// name
methName = "m1";
MethodAndTPH m1 = new MethodAndTPH("m1");
methName2 = "m2";
MethodAndTPH m2 = new MethodAndTPH("m2");
m1.getTphs().add("A");
m1.getTphs().add("B");
m1.getTphs().add("D");
m2.getTphs().add("C");
m2.getTphs().add("E");
tphExtractor.ListOfMethodsAndTph.add(m1);
tphExtractor.ListOfMethodsAndTph.add(m2);
tphExtractor.allCons.add(c1);
tphExtractor.allCons.add(c2);
tphExtractor.allCons.add(c3);
tphExtractor.allCons.add(c4);
}
@Test
public void testM1() {
HashMap<TPHConstraint, HashSet<String>> result = new HashMap<>();
TPHConstraint d = new ExtendsConstraint("D", Type.getInternalName(Object.class), Relation.EXTENDS);
TPHConstraint a = new ExtendsConstraint("A", "D", Relation.EXTENDS);
TPHConstraint b = new ExtendsConstraint("B", "D", Relation.EXTENDS);
result.put(d, null);
result.put(a, null);
result.put(b, null);
HashMap<TPHConstraint, HashSet<String>> sim = Simplify.simplifyConstraints(methName, tphExtractor);
boolean areEquals = SimpleCycle.areMapsEqual(result, sim);
assertTrue(areEquals);
}
@Test
public void testM2() {
HashMap<TPHConstraint, HashSet<String>> result = new HashMap<>();
TPHConstraint e = new ExtendsConstraint("E", Type.getInternalName(Object.class), Relation.EXTENDS);
TPHConstraint c = new ExtendsConstraint("C", "E", Relation.EXTENDS);
result.put(e, null);
result.put(c, null);
HashMap<TPHConstraint, HashSet<String>> sim = Simplify.simplifyConstraints(methName2, tphExtractor);
boolean areEquals = SimpleCycle.areMapsEqual(result, sim);
assertTrue(areEquals);
}
}

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test/bytecode/simplifyalgo/SimpleCycle.java Normal file
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package bytecode.simplifyalgo;
import static org.junit.Assert.*;
import java.util.HashMap;
import java.util.HashSet;
import org.junit.BeforeClass;
import org.junit.Test;
import org.objectweb.asm.Type;
import de.dhbwstuttgart.bytecode.TPHExtractor;
import de.dhbwstuttgart.bytecode.constraint.ExtendsConstraint;
import de.dhbwstuttgart.bytecode.constraint.TPHConstraint;
import de.dhbwstuttgart.bytecode.constraint.TPHConstraint.Relation;
import de.dhbwstuttgart.bytecode.utilities.Simplify;
/**
*
* @author Fayez Abu Alia
*
*/
public class SimpleCycle {
private static TPHExtractor tphExtractor;
private static String methName;
@BeforeClass
public static void setUpBeforeClass() throws Exception {
tphExtractor = new TPHExtractor();
// A < B
TPHConstraint c1 = new ExtendsConstraint("A", "B", Relation.EXTENDS);
// B < A
TPHConstraint c2 = new ExtendsConstraint("B", "A", Relation.EXTENDS);
// name
methName = "m";
tphExtractor.allCons.add(c1);
tphExtractor.allCons.add(c2);
}
@Test
public void test() {
HashMap<TPHConstraint, HashSet<String>> result = new HashMap<>();
HashSet<String> equals = new HashSet<>();
equals.add("A");
equals.add("B");
TPHConstraint k = new ExtendsConstraint("B", Type.getInternalName(Object.class), Relation.EXTENDS);
result.put(k, equals);
HashMap<TPHConstraint, HashSet<String>> sim = Simplify.simplifyConstraints(methName, tphExtractor);
boolean areEquals = areMapsEqual(result, sim);
assertTrue(areEquals);
}
public static boolean areMapsEqual(HashMap<TPHConstraint, HashSet<String>> m1, HashMap<TPHConstraint, HashSet<String>> m2) {
for(TPHConstraint c : m1.keySet()) {
for(TPHConstraint c2 : m2.keySet()) {
if(c.getLeft().equals(c2.getLeft()) && c.getRight().equals(c2.getRight()) && c.getRel()==c2.getRel()) {
HashSet<String> eq1 = m1.get(c);
HashSet<String> eq2 = m2.get(c2);
if((eq1 == null && eq2 != null) || (eq1 != null && eq2 == null))
return false;
if(eq1 != null) {
if(eq1.size() != eq2.size())
return false;
for(String tph:eq1) {
if(!eq2.contains(tph))
return false;
}
}
}
}
}
return true;
}
}