4 files changed, 1 insertions, 130 deletions
diff --git a/src/main/java/org/uic/barcode/asn1/datatypes/Alphabet.java b/src/main/java/org/uic/barcode/asn1/datatypes/Alphabet.java
index 2b153ae..0202e16 100644
--- a/src/main/java/org/uic/barcode/asn1/datatypes/Alphabet.java
+++ b/src/main/java/org/uic/barcode/asn1/datatypes/Alphabet.java
@@ -3,7 +3,6 @@ package org.uic.barcode.asn1.datatypes;
 /**
  * Alphabet class for Restricted Strings.
  *
- * Use {@link AlphabetBuilder} for convenient construction of restriction alphabets.
  */
 public abstract class Alphabet {
 
diff --git a/src/main/java/org/uic/barcode/asn1/datatypes/AlphabetBuilder.java b/src/main/java/org/uic/barcode/asn1/datatypes/AlphabetBuilder.java
deleted file mode 100644
index b768897..0000000
--- a/src/main/java/org/uic/barcode/asn1/datatypes/AlphabetBuilder.java
+++ /dev/null
@@ -1,32 +0,0 @@
-package org.uic.barcode.asn1.datatypes;
-
-
-public class AlphabetBuilder {
-
-    private final StringBuilder sb = new StringBuilder();
-
-    public AlphabetBuilder() {}
-
-    public String chars() {
-        return sb.toString();
-    }
-
-    public AlphabetBuilder withRange(char from, char to) {
-        for (char c = from; c <= to; c++) {
-            sb.append(c);
-        }
-        return this;
-    }
-
-    public AlphabetBuilder withChars(String str) {
-        sb.append(str);
-        return this;
-    }
-
-    public AlphabetBuilder withChars(Character... chars) {
-        for (char c : chars) {
-            sb.append(c);
-        }
-        return this;
-    }
-}
diff --git a/src/main/java/org/uic/barcode/asn1/datatypes/Bitstring.java b/src/main/java/org/uic/barcode/asn1/datatypes/Bitstring.java
index 1543f64..4771931 100644
--- a/src/main/java/org/uic/barcode/asn1/datatypes/Bitstring.java
+++ b/src/main/java/org/uic/barcode/asn1/datatypes/Bitstring.java
@@ -9,7 +9,7 @@ import java.lang.annotation.Target;
  * In UPER, a SEQUENCE OF Booleans would look exactly as bitstring, so this annotation can be
  * omitted for {@code List<Boolean>}.
  */
-@Target({ElementType.TYPE})
+@Target({ElementType.FIELD})
 @Retention(RetentionPolicy.RUNTIME)
 public @interface Bitstring {
 
diff --git a/src/main/java/org/uic/barcode/asn1/datatypes/Optional.java b/src/main/java/org/uic/barcode/asn1/datatypes/Optional.java
deleted file mode 100644
index 757ba29..0000000
--- a/src/main/java/org/uic/barcode/asn1/datatypes/Optional.java
+++ /dev/null
@@ -1,96 +0,0 @@
-package org.uic.barcode.asn1.datatypes;
-
-import java.util.NoSuchElementException;
-import java.util.Objects;
-
-/** Represents optional values.
- *
- * Should be replaced by java.util.Optional from Java 8, when project moves to Java 8.
- *
- * @param <T> type of contained elements */
-public class Optional<T> {
-
-    private final T       element;
-    private final boolean isPresent;
-
-    private Optional(T element, boolean isPresent) {
-        this.element = element;
-        this.isPresent = isPresent;
-    }
-
-    /** @return true if the Option contains a value */
-    public boolean isPresent() {
-        return isPresent;
-    }
-
-    /** @return the element if the option is not empty
-     * @throws java.util.NoSuchElementException if the option is empty */
-    public T get() {
-        if (isPresent) {
-            return element;
-        } else {
-            throw new NoSuchElementException("None.get");
-        }
-    }
-
-    /** @return the value, if present, otherwise return {@code other}
-     * @param other the value to be returned if there is no value present */
-    public T orElse(T other) {
-        return isPresent() ? get() : other;
-    }
-
-    /**
-     * Indicates whether some other object is "equal to" this Optional. The
-     * other object is considered equal if:
-     * <ul>
-     * <li>it is also an {@code Optional} and;
-     * <li>both instances have no value present or;
-     * <li>the present values are "equal to" each other via {@code equals()}.
-     * </ul>
-     *
-     * @param obj an object to be tested for equality
-     * @return {code true} if the other object is "equal to" this object
-     * otherwise {@code false}
-     */
-    @Override
-    public boolean equals(Object obj) {
-        if (this == obj) {
-            return true;
-        }
-
-        if (!(obj instanceof Optional)) {
-            return false;
-        }
-
-        Optional<?> other = (Optional<?>) obj;
-        return Objects.equals(element, other.element);
-    }
-
-    /**
-     * Returns the hash code value of the present value, if any, or 0 (zero) if
-     * no value is present.
-     *
-     * @return hash code value of the present value or 0 if no value is present
-     */
-    @Override
-    public int hashCode() {
-        return Objects.hashCode(element);
-    }
-
-    /** Returns an Option containing the value.
-     *
-     * @param <A> the type of the value
-     * @param element contained value
-     * @return a new Option that contains the value */
-    public static <A> Optional<A> of(final A element) {
-        return new Optional<A>(element, true);
-    }
-
-    /** Returns an empty option.
-     *
-     * @param <A>
-     * @return an empty Option */
-    public static <A> Optional<A> empty() {
-        return new Optional<A>(null, false);
-    }
-}