Fix JD-GUI java-decompiler#252 : incorrect integer constant type

src/main/java/org/jd/core/v1/model/javasyntax/expression/NewExpression.java

@@ -15,6 +15,7 @@
 public class NewExpression extends AbstractLineNumberExpression {
     protected BaseTypeArgument nonWildcardTypeArguments;
     protected ObjectType type;
+    protected String descriptor;
     protected BaseExpression parameters;
     protected BodyDeclaration bodyDeclaration;
 
@@ -29,10 +30,11 @@ public NewExpression(int lineNumber, ObjectType type, BodyDeclaration bodyDeclar
         this.bodyDeclaration = bodyDeclaration;
     }
 
-    public NewExpression(int lineNumber, BaseTypeArgument nonWildcardTypeArguments, ObjectType type, BaseExpression parameters, BodyDeclaration bodyDeclaration) {
+    public NewExpression(int lineNumber, BaseTypeArgument nonWildcardTypeArguments, ObjectType type, String descriptor, BaseExpression parameters, BodyDeclaration bodyDeclaration) {
         super(lineNumber);
         this.nonWildcardTypeArguments = nonWildcardTypeArguments;
         this.type = type;
+        this.descriptor = descriptor;
         this.parameters = parameters;
         this.bodyDeclaration = bodyDeclaration;
     }
@@ -59,6 +61,10 @@ public int getPriority() {
         return 3;
     }
 
+    public String getDescriptor() {
+        return descriptor;
+    }
+
     public BaseExpression getParameters() {
         return parameters;
     }
@@ -67,6 +73,11 @@ public void setParameters(BaseExpression parameters) {
         this.parameters = parameters;
     }
 
+    public void setDescriptorAndParameters(String descriptor, BaseExpression parameters) {
+        this.descriptor = descriptor;
+        this.parameters = parameters;
+    }
+
     public BodyDeclaration getBodyDeclaration() {
         return bodyDeclaration;
     }

src/main/java/org/jd/core/v1/model/javasyntax/expression/NewInnerExpression.java

@@ -14,8 +14,8 @@
 public class NewInnerExpression extends NewExpression {
     protected Expression expression;
 
-    public NewInnerExpression(int lineNumber, BaseTypeArgument nonWildcardTypeArguments, ObjectType type, BaseExpression parameters, BodyDeclaration bodyDeclaration, Expression expression) {
-        super(lineNumber, nonWildcardTypeArguments, type, parameters, bodyDeclaration);
+    public NewInnerExpression(int lineNumber, BaseTypeArgument nonWildcardTypeArguments, ObjectType type, String descriptor, BaseExpression parameters, BodyDeclaration bodyDeclaration, Expression expression) {
+        super(lineNumber, nonWildcardTypeArguments, type, descriptor, parameters, bodyDeclaration);
         this.expression = expression;
     }
 

src/main/java/org/jd/core/v1/service/converter/classfiletojavasyntax/util/ByteCodeParser.java

@@ -763,7 +763,7 @@ public void parse(BasicBlock basicBlock, Statements<Statement> statements, Defau
                                 "<init>".equals(name)) {
 
                                 if (expression1.getClass() == NewExpression.class) {
-                                    ((NewExpression) expression1).setParameters(parameters);
+                                    ((NewExpression)expression1).setDescriptorAndParameters(descriptor, parameters);
                                 } else if (expression1.getType().equals(ot)) {
                                     statements.add(new ExpressionStatement(new ConstructorInvocationExpression(lineNumber, ot, descriptor, parameters)));
                                 } else {

src/main/java/org/jd/core/v1/service/converter/classfiletojavasyntax/visitor/UpdateIntegerConstantTypeVisitor.java

@@ -205,6 +205,23 @@ public void visit(MethodInvocationExpression expression) {
         expression.getExpression().accept(this);
     }
 
+    @Override
+    public void visit(NewExpression expression) {
+        BaseExpression parameters = expression.getParameters();
+
+        if (parameters != null) {
+            String internalTypeName = expression.getObjectType().getInternalName();
+            String descriptor = expression.getDescriptor();
+            List<Type> types = TYPES.get(internalTypeName + ":<init>" + descriptor);
+
+            if (types == null) {
+                types = signatureParser.parseParameterTypes(descriptor);
+            }
+
+            expression.setParameters(updateExpressions(types, parameters));
+        }
+    }
+
     @Override
     public void visit(NewArray expression) {
         BaseExpression dimensions = expression.getDimensionExpressionList();

src/test/java/org/jd/core/v1/ClassFileToJavaSourceTest.java

@@ -110,6 +110,8 @@ public void testJdk170Basic() throws Exception {
 
         assertTrue(source.matches(PatternMaker.make("[ 183: 183]", "return ((Basic)objects[index]).int78;")));
 
+        assertTrue(source.matches(PatternMaker.make("[ 186: 186]", "protected static final Integer INTEGER_255 = new Integer(255);")));
+
         assertTrue(source.indexOf("<init>()") == -1);
         assertTrue(source.indexOf("null = ") == -1);
         assertTrue(source.indexOf("NaND") == -1);
@@ -144,7 +146,7 @@ public void testJdk170NoDebugBasic() throws Exception {
         assertTrue(source.matches(PatternMaker.make("System.out.println(\"hello\");")));
 
         assertTrue(source.matches(PatternMaker.make("String str1 = \"3 == \" + (paramInt + 1) + \" ?\";")));
-        assertTrue(source.matches(PatternMaker.make("String str2 = \"abc \\\\b \\\\f \\\\n \\\\r \\\\t \\\\\\\" \\\\007 def\";")));
+        assertTrue(source.indexOf("String str2 = str1.valueOf(\"abc \\b \\f \\n \\r \\t \\\" \\007 def\");") != -1);
         assertTrue(source.matches(PatternMaker.make("char c2 = '€';")));
         assertTrue(source.matches(PatternMaker.make("char c4 = c3 = c2 = c1 = Character.toUpperCase('x');")));
         assertTrue(source.matches(PatternMaker.make("Class clazz3 = String.class;")));
@@ -156,6 +158,8 @@ public void testJdk170NoDebugBasic() throws Exception {
 
         assertTrue(source.matches(PatternMaker.make("this.int78 = 50 / (25 + (this.int78 = 789));")));
 
+        assertTrue(source.indexOf("protected static final Integer INTEGER_255 = new Integer(255);") != -1);
+
         assertTrue(source.indexOf("<init>()") == -1);
         assertTrue(source.indexOf("null = ") == -1);
         assertTrue(source.indexOf("NaND") == -1);
@@ -2285,6 +2289,7 @@ public void testJdk142Basic() throws Exception {
         assertTrue(source.matches(PatternMaker.make("[ 171: 171]", "return str + str;")));
         assertTrue(source.matches(PatternMaker.make("[ 174: 174]", "return str;")));
         assertTrue(source.matches(PatternMaker.make("[ 183: 183]", "return ((Basic)objects[index]).int78;")));
+        assertTrue(source.matches(PatternMaker.make("[ 186: 186]", "protected static final Integer INTEGER_255 = new Integer(255);")));
 
         assertTrue(source.indexOf("// Byte code:") == -1);
         assertTrue(source.indexOf(".null.") == -1 && source.indexOf(".null ") == -1 && source.indexOf("null = ") == -1);
@@ -2324,6 +2329,7 @@ public void testJdk901Basic() throws Exception {
         assertTrue(source.matches(PatternMaker.make("[ 171: 171]", "return str + str;")));
         assertTrue(source.matches(PatternMaker.make("[ 174: 174]", "return str;")));
         assertTrue(source.matches(PatternMaker.make("[ 183: 183]", "return ((Basic)objects[index]).int78;")));
+        assertTrue(source.matches(PatternMaker.make("[ 186: 186]", "protected static final Integer INTEGER_255 = new Integer(255);")));
 
         assertTrue(source.indexOf("// Byte code:") == -1);
         assertTrue(source.indexOf(".null.") == -1 && source.indexOf(".null ") == -1 && source.indexOf("null = ") == -1);
@@ -2363,6 +2369,7 @@ public void testJdk1002Basic() throws Exception {
         assertTrue(source.matches(PatternMaker.make("[ 171: 171]", "return str + str;")));
         assertTrue(source.matches(PatternMaker.make("[ 174: 174]", "return str;")));
         assertTrue(source.matches(PatternMaker.make("[ 183: 183]", "return ((Basic)objects[index]).int78;")));
+        assertTrue(source.matches(PatternMaker.make("[ 186: 186]", "protected static final Integer INTEGER_255 = new Integer(255);")));
 
         assertTrue(source.indexOf("// Byte code:") == -1);
         assertTrue(source.indexOf(".null.") == -1 && source.indexOf(".null ") == -1 && source.indexOf("null = ") == -1);

src/test/resources/java/org/jd/core/test/Basic.java

@@ -182,4 +182,6 @@ public Basic getLast(Object[] objects) {
     public int getInt78(Object[] objects, short index) {
         return ((Basic)objects[index]).int78;
     }
-}
+
+    protected final static Integer INTEGER_255 = new Integer(255);
+}