diff options
Diffstat (limited to 'src/net/gcdc/asn1/uper/EnumCoder.java')
| -rw-r--r-- | src/net/gcdc/asn1/uper/EnumCoder.java | 156 |
1 files changed, 0 insertions, 156 deletions
diff --git a/src/net/gcdc/asn1/uper/EnumCoder.java b/src/net/gcdc/asn1/uper/EnumCoder.java deleted file mode 100644 index f86fe5f..0000000 --- a/src/net/gcdc/asn1/uper/EnumCoder.java +++ /dev/null @@ -1,156 +0,0 @@ -package net.gcdc.asn1.uper; - -import java.lang.annotation.Annotation; -import java.lang.reflect.Field; -import java.util.ArrayList; -import java.util.Arrays; -import java.util.List; - -import net.gcdc.asn1.datatypes.Asn1Default; -import net.gcdc.asn1.datatypes.IsExtension; - -class EnumCoder implements Decoder, Encoder { - - @Override public <T> boolean canEncode(T obj, Annotation[] extraAnnotations) { - Class<?> type = obj.getClass(); - return type.isEnum(); - } - - @Override public <T> void encode(BitBuffer bitbuffer, T obj, Annotation[] extraAnnotations) throws Asn1EncodingException { - Class<?> type = obj.getClass(); - AnnotationStore annotations = new AnnotationStore(type.getAnnotations(), extraAnnotations); - String pos = String.format("%d.%d", bitbuffer.position()/8 , bitbuffer.position() % 8); - UperEncoder.logger.debug(String.format("Position %s ENUM",pos)); - try { - int position = bitbuffer.position(); - - List<?> values = Arrays.asList(type.getEnumConstants()); - int enumIndex = values.indexOf(obj); - - if (!UperEncoder.hasExtensionMarker(annotations)) { - UperEncoder.logger.debug(String.format("enum without extension: index %d value %s, encoding index...", enumIndex,obj.toString())); - UperEncoder.encodeConstrainedInt(bitbuffer, enumIndex, 0, values.size() - 1); - return; - } else { - List<Object> valuesWithinExtensionRoot = new ArrayList<>(); - List<Object> valuesOutsideExtensionRoot = new ArrayList<>(); - for (Object c : type.getEnumConstants()) { - String field = c.toString(); - boolean isExtension = false; - try { - isExtension = type.getField(field).isAnnotationPresent(IsExtension.class); - } catch (NoSuchFieldException e) { - throw new IllegalArgumentException("Illegal value for enum field " , e); - } catch (SecurityException e) { - throw new IllegalArgumentException("Illegal access restriction for enum field " , e); - } - - if (!isExtension) { - valuesWithinExtensionRoot.add(c); - } else { - valuesOutsideExtensionRoot.add(c); - } - } - - if (valuesWithinExtensionRoot.contains(obj)) { - UperEncoder.logger.debug(String.format("Extension indicator set to false")); - bitbuffer.put(false); - int index = valuesWithinExtensionRoot.indexOf(obj); - UperEncoder.encodeConstrainedInt(bitbuffer, index, 0, valuesWithinExtensionRoot.size() - 1); - UperEncoder.logger.debug(String.format("ENUM with extension: index %d value %s, encoded as root value <%s>", index, obj.toString(), - bitbuffer.toBooleanStringFromPosition(position))); - return; - } else { - //CG encode the index in the extension list as small integer - UperEncoder.logger.debug(String.format("Extension indicator set to true")); - bitbuffer.put(true); - int index = valuesOutsideExtensionRoot.indexOf(obj); - - UperEncoder.encodeSmallInt(bitbuffer, index); - UperEncoder.logger.debug(String.format("ENUM with extension: index %d value %s, encoded as extension <%s>", index, obj.toString(), - bitbuffer.toBooleanStringFromPosition(position))); - } - } - } catch (Asn1EncodingException e) { - throw new Asn1EncodingException(type.getName(), e); - } - } - - @Override public <T> boolean canDecode(Class<T> classOfT, Annotation[] extraAnnotations) { - return classOfT.isEnum(); - } - - @Override public <T> T decode(BitBuffer bitbuffer, - Class<T> classOfT, Field field, - Annotation[] extraAnnotations) { - AnnotationStore annotations = new AnnotationStore(classOfT.getAnnotations(), extraAnnotations); - UperEncoder.logger.debug("ENUM"); - boolean extensionPresent = false; - if (UperEncoder.hasExtensionMarker(annotations)) { - extensionPresent = bitbuffer.get(); - UperEncoder.logger.debug(String.format("with extension marker, %s" , extensionPresent ? "present" : "absent")); - } - T[] enumValues = classOfT.getEnumConstants(); - - int rootValues = 0; - - boolean isExtension = false; - for (Object c : enumValues) { - String value = c.toString(); - try { - isExtension = classOfT.getField(value).isAnnotationPresent(IsExtension.class); - } catch (NoSuchFieldException e) { - throw new IllegalArgumentException("Illegal value for extension field " , e); - } catch (SecurityException e) { - throw new IllegalArgumentException("Illegal value for extension field " , e); - } - - if (!isExtension) rootValues++; - } - - // - int index = 0; - if (!extensionPresent){ - //root element - index = (int) UperEncoder.decodeConstrainedInt(bitbuffer, - UperEncoder.newRange(0, rootValues - 1, false)); - } else { - //extension element, decode as small int without restriction - index = (int) UperEncoder.decodeSmallInt(bitbuffer); - //the encoded index is an index within the extensions list only - index = index + rootValues; - } - - if (index > enumValues.length - 1 && extensionPresent) { - //this is an unknown extension - UperEncoder.logger.debug(String.format("Enum contains unknown extendion index %d" , index)); - return null; - } - if (index > enumValues.length - 1 && !extensionPresent) { - //this should not happen - throw new IllegalArgumentException( - "decoded enum index " + index + " is larger then number of elements (0.." - + enumValues.length + ") in " + classOfT.getName()); - } - T value = enumValues[index]; - UperEncoder.logger.debug(String.format("Enum decoded as %s" , value.toString())); - return value; - } - - @SuppressWarnings("unchecked") - @Override - public <T> T getDefault(Class<T> classOfT, Annotation[] extraAnnotations) { - AnnotationStore annotations = new AnnotationStore(classOfT.getAnnotations(), extraAnnotations); - Asn1Default defaultAnnotation = annotations.getAnnotation(Asn1Default.class); - if (defaultAnnotation == null) return null; - - for (Object c : classOfT.getEnumConstants()) { - if (c.toString().equals(defaultAnnotation.value())) { - return (T) c; - } - } - - return null; - } - -}
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