diff --git a/src/constants.rs b/src/constants.rs
deleted file mode 100644
index 875ebcb..0000000
--- a/src/constants.rs
+++ /dev/null
@@ -1,77 +0,0 @@
-//! Various constants defined in Dalvik files
-
-#[allow(non_camel_case_types)]
-
-/// Types of items present in the header map of a DEX file
-pub struct MapItemType;
-impl MapItemType {
-    pub const HEADER_ITEM               : u16 = 0x0000;
-    pub const STRING_ID_ITEM            : u16 = 0x0001;
-    pub const TYPE_ID_ITEM              : u16 = 0x0002;
-    pub const PROTO_ID_ITEM             : u16 = 0x0003;
-    pub const FIELD_ID_ITEM             : u16 = 0x0004;
-    pub const METHOD_ID_ITEM            : u16 = 0x0005;
-    pub const CLASS_DEF_ITEM            : u16 = 0x0006;
-    pub const CALL_SITE_ID_ITEM         : u16 = 0x0007;
-    pub const METHOD_HANDLE_ITEM        : u16 = 0x0008;
-    pub const MAP_LIST                  : u16 = 0x1000;
-    pub const TYPE_LIST                 : u16 = 0x1001;
-    pub const ANNOTATION_SET_REF_LIST   : u16 = 0x1002;
-    pub const ANNOTATION_SET_ITEM       : u16 = 0x1003;
-    pub const CLASS_DATA_ITEM           : u16 = 0x2000;
-    pub const CODE_ITEM                 : u16 = 0x2001;
-    pub const STRING_DATA_ITEM          : u16 = 0x2002;
-    pub const DEBUG_INFO_ITEM           : u16 = 0x2003;
-    pub const ANNOTATION_ITEM           : u16 = 0x2004;
-    pub const ENCODED_ARRAY_ITEM        : u16 = 0x2005;
-    pub const ANNOTATIONS_DIRECTORY_ITEM: u16 = 0x2006;
-    pub const HIDDENAPI_CLASS_DATA_ITEM : u16 = 0xF000;
-}
-
-/// Representation of the different method types
-pub struct MethodHandleType;
-impl MethodHandleType {
-    /// Method handle is a static field setter (accessor)
-    pub const METHOD_HANDLE_TYPE_STATIC_PUT        : u16 = 0x00;
-    /// Method handle is a static field getter (accessor)
-    pub const METHOD_HANDLE_TYPE_STATIC_GET        : u16 = 0x01;
-    /// Method handle is an instance field setter (accessor)
-    pub const METHOD_HANDLE_TYPE_INSTANCE_PUT      : u16 = 0x02;
-    /// Method handle is an instance field getter (accessor)
-    pub const METHOD_HANDLE_TYPE_INSTANCE_GET      : u16 = 0x03;
-    /// Method handle is a static method invoker
-    pub const METHOD_HANDLE_TYPE_INVOKE_STATIC     : u16 = 0x04;
-    /// Method handle is an instance method invoker
-    pub const METHOD_HANDLE_TYPE_INVOKE_INSTANCE   : u16 = 0x05;
-    /// Method handle is a constructor method invoker
-    pub const METHOD_HANDLE_TYPE_INVOKE_CONSTRUCTOR: u16 = 0x06;
-    /// Method handle is a direct method invoker
-    pub const METHOD_HANDLE_TYPE_INVOKE_DIRECT     : u16 = 0x07;
-    /// Method handle is an interface method invoker
-    pub const METHOD_HANDLE_TYPE_INVOKE_INTERFACE  : u16 = 0x08;
-}
-
-/// An encoded value is an encoded piece of (nearly) arbitrary
-/// hierarchically structured data. The encoding is meant to be
-/// both compact and straightforward to parse.
-pub struct EncodedValueFormat;
-impl EncodedValueFormat {
-    pub const VALUE_BYTE         : u8 = 0x00;
-    pub const VALUE_SHORT        : u8 = 0x02;
-    pub const VALUE_CHAR         : u8 = 0x03;
-    pub const VALUE_INT          : u8 = 0x04;
-    pub const VALUE_LONG         : u8 = 0x06;
-    pub const VALUE_FLOAT        : u8 = 0x10;
-    pub const VALUE_DOUBLE       : u8 = 0x11;
-    pub const VALUE_METHOD_TYPE  : u8 = 0x15;
-    pub const VALUE_METHOD_HANDLE: u8 = 0x16;
-    pub const VALUE_STRING       : u8 = 0x17;
-    pub const VALUE_TYPE         : u8 = 0x18;
-    pub const VALUE_FIELD        : u8 = 0x19;
-    pub const VALUE_METHOD       : u8 = 0x1a;
-    pub const VALUE_ENUM         : u8 = 0x1b;
-    pub const VALUE_ARRAY        : u8 = 0x1c;
-    pub const VALUE_ANNOTATION   : u8 = 0x1d;
-    pub const VALUE_NULL         : u8 = 0x1e;
-    pub const VALUE_BOOLEAN      : u8 = 0x1f;
-}