Java Code Examples for org.apache.bcel.classfile.Field#isProtected()
The following examples show how to use
org.apache.bcel.classfile.Field#isProtected() .
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Example 1
Source File: GenerateStubDialog.java From j-j-jvm with Apache License 2.0 | 6 votes |
protected String field2str(final Field field) { String modifier = ""; if (field.isPrivate()) { modifier = "private "; } else if (field.isProtected()) { modifier = "protected "; } else if (field.isPublic()) { modifier = "public "; } if (field.isStatic()) { modifier += "static "; } if (field.isFinal()) { modifier += "final "; } modifier += field.getType().toString(); modifier += ' ' + field.getName(); return modifier; }
Example 2
Source File: ConfusedInheritance.java From spotbugs with GNU Lesser General Public License v2.1 | 5 votes |
@Override public void visitField(Field obj) { if (obj.isProtected()) { bugReporter.reportBug(new BugInstance(this, "CI_CONFUSED_INHERITANCE", LOW_PRIORITY).addClass(cls).addField( new FieldAnnotation(cls.getClassName(), obj.getName(), obj.getSignature(), obj.isStatic()))); } }
Example 3
Source File: InstConstraintVisitor.java From ApkToolPlus with Apache License 2.0 | 4 votes |
/** * Ensures the specific preconditions of the said instruction. */ public void visitGETFIELD(GETFIELD o){ Type objectref = stack().peek(); if (! ( (objectref instanceof ObjectType) || (objectref == Type.NULL) ) ){ constraintViolated(o, "Stack top should be an object reference that's not an array reference, but is '"+objectref+"'."); } String field_name = o.getFieldName(cpg); JavaClass jc = Repository.lookupClass(o.getClassType(cpg).getClassName()); Field[] fields = jc.getFields(); Field f = null; for (int i=0; i<fields.length; i++){ if (fields[i].getName().equals(field_name)){ f = fields[i]; break; } } if (f == null){ throw new AssertionViolatedException("Field not found?!?"); } if (f.isProtected()){ ObjectType classtype = o.getClassType(cpg); ObjectType curr = new ObjectType(mg.getClassName()); if ( classtype.equals(curr) || curr.subclassOf(classtype) ){ Type t = stack().peek(); if (t == Type.NULL){ return; } if (! (t instanceof ObjectType) ){ constraintViolated(o, "The 'objectref' must refer to an object that's not an array. Found instead: '"+t+"'."); } ObjectType objreftype = (ObjectType) t; if (! ( objreftype.equals(curr) || objreftype.subclassOf(curr) ) ){ //TODO: One day move to Staerk-et-al's "Set of object types" instead of "wider" object types // created during the verification. // "Wider" object types don't allow us to check for things like that below. //constraintViolated(o, "The referenced field has the ACC_PROTECTED modifier, and it's a member of the current class or a superclass of the current class. However, the referenced object type '"+stack().peek()+"' is not the current class or a subclass of the current class."); } } } // TODO: Could go into Pass 3a. if (f.isStatic()){ constraintViolated(o, "Referenced field '"+f+"' is static which it shouldn't be."); } }
Example 4
Source File: InstConstraintVisitor.java From ApkToolPlus with Apache License 2.0 | 4 votes |
/** * Ensures the specific preconditions of the said instruction. */ public void visitPUTFIELD(PUTFIELD o){ Type objectref = stack().peek(1); if (! ( (objectref instanceof ObjectType) || (objectref == Type.NULL) ) ){ constraintViolated(o, "Stack next-to-top should be an object reference that's not an array reference, but is '"+objectref+"'."); } String field_name = o.getFieldName(cpg); JavaClass jc = Repository.lookupClass(o.getClassType(cpg).getClassName()); Field[] fields = jc.getFields(); Field f = null; for (int i=0; i<fields.length; i++){ if (fields[i].getName().equals(field_name)){ f = fields[i]; break; } } if (f == null){ throw new AssertionViolatedException("Field not found?!?"); } Type value = stack().peek(); Type t = Type.getType(f.getSignature()); Type shouldbe = t; if (shouldbe == Type.BOOLEAN || shouldbe == Type.BYTE || shouldbe == Type.CHAR || shouldbe == Type.SHORT){ shouldbe = Type.INT; } if (t instanceof ReferenceType){ ReferenceType rvalue = null; if (value instanceof ReferenceType){ rvalue = (ReferenceType) value; referenceTypeIsInitialized(o, rvalue); } else{ constraintViolated(o, "The stack top type '"+value+"' is not of a reference type as expected."); } // TODO: This can possibly only be checked using Staerk-et-al's "set-of-object types", not // using "wider cast object types" created during verification. // Comment it out if you encounter problems. See also the analogon at visitPUTSTATIC. if (!(rvalue.isAssignmentCompatibleWith(shouldbe))){ constraintViolated(o, "The stack top type '"+value+"' is not assignment compatible with '"+shouldbe+"'."); } } else{ if (shouldbe != value){ constraintViolated(o, "The stack top type '"+value+"' is not of type '"+shouldbe+"' as expected."); } } if (f.isProtected()){ ObjectType classtype = o.getClassType(cpg); ObjectType curr = new ObjectType(mg.getClassName()); if ( classtype.equals(curr) || curr.subclassOf(classtype) ){ Type tp = stack().peek(1); if (tp == Type.NULL){ return; } if (! (tp instanceof ObjectType) ){ constraintViolated(o, "The 'objectref' must refer to an object that's not an array. Found instead: '"+tp+"'."); } ObjectType objreftype = (ObjectType) tp; if (! ( objreftype.equals(curr) || objreftype.subclassOf(curr) ) ){ constraintViolated(o, "The referenced field has the ACC_PROTECTED modifier, and it's a member of the current class or a superclass of the current class. However, the referenced object type '"+stack().peek()+"' is not the current class or a subclass of the current class."); } } } // TODO: Could go into Pass 3a. if (f.isStatic()){ constraintViolated(o, "Referenced field '"+f+"' is static which it shouldn't be."); } }
Example 5
Source File: StaticCalendarDetector.java From spotbugs with GNU Lesser General Public License v2.1 | 4 votes |
/** * Checks if the visited field is of type {@link java.util.Calendar} or * {@link java.text.DateFormat} or a subclass of either one. If so and the * field is static and non-private it is suspicious and will be reported. */ @Override public void visit(Field aField) { if (aField.isPrivate()) { /* * private fields are harmless, as long as they are used correctly * inside their own class. This should be something the rest of this * detector can find out, so do not report them, they might be false * positives. */ return; } String superclassName = getSuperclassName(); if (!aField.isStatic() && !"java/lang/Enum".equals(superclassName)) { return; } if (!aField.isPublic() && !aField.isProtected()) { return; } ClassDescriptor classOfField = DescriptorFactory.createClassDescriptorFromFieldSignature(aField.getSignature()); String tBugType = null; int priority = aField.isPublic() && aField.isFinal() && aField.getName().equals(aField.getName().toUpperCase()) && getThisClass().isPublic() ? HIGH_PRIORITY : NORMAL_PRIORITY; if (classOfField != null) { try { if (subtypes2.isSubtype(classOfField, calendarType)) { tBugType = "STCAL_STATIC_CALENDAR_INSTANCE"; priority++; } else if (subtypes2.isSubtype(classOfField, dateFormatType)) { tBugType = "STCAL_STATIC_SIMPLE_DATE_FORMAT_INSTANCE"; } if (getClassContext().getXClass().usesConcurrency()) { priority--; } if (tBugType != null) { pendingBugs.put(getXField(), new BugInstance(this, tBugType, priority).addClass(currentClass).addField(this)); } } catch (ClassNotFoundException e) { AnalysisContext.reportMissingClass(e); } } }
Example 6
Source File: Pass2Verifier.java From commons-bcel with Apache License 2.0 | 4 votes |
@Override public void visitField(final Field obj) { if (jc.isClass()) { int maxone=0; if (obj.isPrivate()) { maxone++; } if (obj.isProtected()) { maxone++; } if (obj.isPublic()) { maxone++; } if (maxone > 1) { throw new ClassConstraintException("Field '"+tostring(obj)+ "' must only have at most one of its ACC_PRIVATE, ACC_PROTECTED, ACC_PUBLIC modifiers set."); } if (obj.isFinal() && obj.isVolatile()) { throw new ClassConstraintException("Field '"+tostring(obj)+ "' must only have at most one of its ACC_FINAL, ACC_VOLATILE modifiers set."); } } else{ // isInterface! if (!obj.isPublic()) { throw new ClassConstraintException("Interface field '"+tostring(obj)+ "' must have the ACC_PUBLIC modifier set but hasn't!"); } if (!obj.isStatic()) { throw new ClassConstraintException("Interface field '"+tostring(obj)+ "' must have the ACC_STATIC modifier set but hasn't!"); } if (!obj.isFinal()) { throw new ClassConstraintException("Interface field '"+tostring(obj)+ "' must have the ACC_FINAL modifier set but hasn't!"); } } if ((obj.getAccessFlags() & ~(Const.ACC_PUBLIC|Const.ACC_PRIVATE|Const.ACC_PROTECTED|Const.ACC_STATIC| Const.ACC_FINAL|Const.ACC_VOLATILE|Const.ACC_TRANSIENT)) > 0) { addMessage("Field '"+tostring(obj)+ "' has access flag(s) other than ACC_PUBLIC, ACC_PRIVATE, ACC_PROTECTED,"+ " ACC_STATIC, ACC_FINAL, ACC_VOLATILE, ACC_TRANSIENT set (ignored)."); } checkIndex(obj, obj.getNameIndex(), CONST_Utf8); final String name = obj.getName(); if (! validFieldName(name)) { throw new ClassConstraintException("Field '"+tostring(obj)+"' has illegal name '"+obj.getName()+"'."); } // A descriptor is often named signature in BCEL checkIndex(obj, obj.getSignatureIndex(), CONST_Utf8); final String sig = ((ConstantUtf8) (cp.getConstant(obj.getSignatureIndex()))).getBytes(); // Field or Method sig.(=descriptor) try{ Type.getType(sig); /* Don't need the return value */ } catch (final ClassFormatException cfe) { throw new ClassConstraintException("Illegal descriptor (==signature) '"+sig+"' used by '"+tostring(obj)+"'.", cfe); } final String nameanddesc = name+sig; if (field_names_and_desc.contains(nameanddesc)) { throw new ClassConstraintException("No two fields (like '"+tostring(obj)+ "') are allowed have same names and descriptors!"); } if (field_names.contains(name)) { addMessage("More than one field of name '"+name+ "' detected (but with different type descriptors). This is very unusual."); } field_names_and_desc.add(nameanddesc); field_names.add(name); final Attribute[] atts = obj.getAttributes(); for (final Attribute att : atts) { if ((!(att instanceof ConstantValue)) && (!(att instanceof Synthetic)) && (!(att instanceof Deprecated))) { addMessage("Attribute '" + tostring(att) + "' as an attribute of Field '" + tostring(obj) + "' is unknown and will therefore be ignored."); } if (!(att instanceof ConstantValue)) { addMessage("Attribute '" + tostring(att) + "' as an attribute of Field '" + tostring(obj) + "' is not a ConstantValue and is therefore only of use for debuggers and such."); } } }
Example 7
Source File: InstConstraintVisitor.java From commons-bcel with Apache License 2.0 | 4 votes |
/** * Ensures the specific preconditions of the said instruction. */ @Override public void visitPUTFIELD(final PUTFIELD o) { try { final Type objectref = stack().peek(1); if (! ( (objectref instanceof ObjectType) || (objectref == Type.NULL) ) ) { constraintViolated(o, "Stack next-to-top should be an object reference that's not an array reference, but is '"+objectref+"'."); } final String field_name = o.getFieldName(cpg); final JavaClass jc = Repository.lookupClass(getObjectType(o).getClassName()); final Field[] fields = jc.getFields(); Field f = null; for (final Field field : fields) { if (field.getName().equals(field_name)) { final Type f_type = Type.getType(field.getSignature()); final Type o_type = o.getType(cpg); /* TODO: Check if assignment compatibility is sufficient. * What does Sun do? */ if (f_type.equals(o_type)) { f = field; break; } } } if (f == null) { throw new AssertionViolatedException("Field '" + field_name + "' not found in " + jc.getClassName()); } final Type value = stack().peek(); final Type t = Type.getType(f.getSignature()); Type shouldbe = t; if (shouldbe == Type.BOOLEAN || shouldbe == Type.BYTE || shouldbe == Type.CHAR || shouldbe == Type.SHORT) { shouldbe = Type.INT; } if (t instanceof ReferenceType) { ReferenceType rvalue = null; if (value instanceof ReferenceType) { rvalue = (ReferenceType) value; referenceTypeIsInitialized(o, rvalue); } else{ constraintViolated(o, "The stack top type '"+value+"' is not of a reference type as expected."); } // TODO: This can possibly only be checked using Staerk-et-al's "set-of-object types", not // using "wider cast object types" created during verification. // Comment it out if you encounter problems. See also the analogon at visitPUTSTATIC. if (!(rvalue.isAssignmentCompatibleWith(shouldbe))) { constraintViolated(o, "The stack top type '"+value+"' is not assignment compatible with '"+shouldbe+"'."); } } else{ if (shouldbe != value) { constraintViolated(o, "The stack top type '"+value+"' is not of type '"+shouldbe+"' as expected."); } } if (f.isProtected()) { final ObjectType classtype = getObjectType(o); final ObjectType curr = ObjectType.getInstance(mg.getClassName()); if ( classtype.equals(curr) || curr.subclassOf(classtype) ) { final Type tp = stack().peek(1); if (tp == Type.NULL) { return; } if (! (tp instanceof ObjectType) ) { constraintViolated(o, "The 'objectref' must refer to an object that's not an array. Found instead: '"+tp+"'."); } final ObjectType objreftype = (ObjectType) tp; if (! ( objreftype.equals(curr) || objreftype.subclassOf(curr) ) ) { constraintViolated(o, "The referenced field has the ACC_PROTECTED modifier, and it's a member of the current class or"+ " a superclass of the current class. However, the referenced object type '"+stack().peek()+ "' is not the current class or a subclass of the current class."); } } } // TODO: Could go into Pass 3a. if (f.isStatic()) { constraintViolated(o, "Referenced field '"+f+"' is static which it shouldn't be."); } } catch (final ClassNotFoundException e) { // FIXME: maybe not the best way to handle this throw new AssertionViolatedException("Missing class: " + e, e); } }