add basic serde support

src/barcode_format.rs

@@ -18,11 +18,15 @@
 
 use std::fmt::Display;
 
+#[cfg(feature = "serde")]
+use serde::{Deserialize, Serialize};
+
 /**
  * Enumerates barcode formats known to this package. Please keep alphabetized.
  *
  * @author Sean Owen
  */
+#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
 #[derive(Debug, PartialEq, Eq, Hash, Clone, Copy)]
 pub enum BarcodeFormat {
     /** Aztec 2D barcode format. */

src/datamatrix/encoder/symbol_shape_hint.rs

@@ -14,10 +14,14 @@
  * limitations under the License.
  */
 
+#[cfg(feature = "serde")]
+use serde::{Deserialize, Serialize};
+
 /**
  * Enumeration for DataMatrix symbol shape hint. It can be used to force square or rectangular
  * symbols.
  */
+#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
 #[derive(Debug, Copy, Clone, PartialEq, Eq)]
 pub enum SymbolShapeHint {
     FORCE_NONE,

src/decode_hints.rs

@@ -20,6 +20,9 @@ use std::collections::HashSet;
 
 use crate::{BarcodeFormat, RXingResultPointCallback};
 
+#[cfg(feature = "serde")]
+use serde::{Deserialize, Serialize};
+
 /**
  * Encapsulates a type of hint that a caller may pass to a barcode reader to help it
  * more quickly or accurately decode it. It is up to implementations to decide what,
@@ -29,6 +32,7 @@ use crate::{BarcodeFormat, RXingResultPointCallback};
  * @author dswitkin@google.com (Daniel Switkin)
  * @see Reader#decode(BinaryBitmap,java.util.Map)
  */
+#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
 #[derive(Eq, PartialEq, Hash, Debug, Clone, Copy)]
 pub enum DecodeHintType {
     /**
@@ -137,6 +141,7 @@ pub enum DecodeHintType {
     }*/
 }
 
+#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
 #[derive(Clone)]
 pub enum DecodeHintValue {
     /**
@@ -196,6 +201,7 @@ pub enum DecodeHintValue {
      * The caller needs to be notified via callback when a possible {@link RXingResultPoint}
      * is found. Maps to a {@link RXingResultPointCallback}.
      */
+    #[cfg_attr(feature = "serde", serde(skip_serializing, skip_deserializing))]
     NeedResultPointCallback(RXingResultPointCallback),
 
     /**

src/dimension.rs

@@ -20,9 +20,13 @@ use std::fmt;
 
 use crate::Exceptions;
 
+#[cfg(feature = "serde")]
+use serde::{Deserialize, Serialize};
+
 /**
  * Simply encapsulates a width and height.
  */
+#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
 #[derive(Eq, PartialEq, Hash, Copy, Clone)]
 pub struct Dimension(usize, usize);
 

src/encode_hints.rs

@@ -18,11 +18,15 @@
 
 use crate::{pdf417::encoder::Dimensions, Dimension};
 
+#[cfg(feature = "serde")]
+use serde::{Deserialize, Serialize};
+
 /**
  * These are a set of hints that you may pass to Writers to specify their behavior.
  *
  * @author dswitkin@google.com (Daniel Switkin)
  */
+#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
 #[derive(Debug, PartialEq, Eq, Hash, Clone, Copy)]
 pub enum EncodeHintType {
     /**
@@ -176,6 +180,7 @@ pub enum EncodeHintType {
     CODE128_COMPACT,
 }
 
+#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
 pub enum EncodeHintValue {
     /**
      * Specifies what degree of error correction to use, for example in QR Codes.

src/pdf417/encoder/dimensions.rs

@@ -14,11 +14,15 @@
  * limitations under the License.
  */
 
+#[cfg(feature = "serde")]
+use serde::{Deserialize, Serialize};
+
 /**
  * Data object to specify the minimum and maximum number of rows and columns for a PDF417 barcode.
  *
  * @author qwandor@google.com (Andrew Walbran)
  */
+#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
 #[derive(Copy, Clone, Eq, PartialEq)]
 pub struct Dimensions {
     minCols: usize,

src/pdf417/pdf_417_result_metadata.rs

@@ -14,9 +14,13 @@
  * limitations under the License.
  */
 
+#[cfg(feature = "serde")]
+use serde::{Deserialize, Serialize};
+
 /**
  * @author Guenther Grau
  */
+#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
 #[derive(Debug, PartialEq, Eq)]
 pub struct PDF417RXingResultMetadata {
     segmentIndex: usize,

src/rxing_result.rs

@@ -14,20 +14,19 @@
  * limitations under the License.
  */
 
-//package com.google.zxing;
-
-//import java.util.EnumMap;
-//import java.util.Map;
-
 use std::{collections::HashMap, fmt};
 
 use crate::{BarcodeFormat, RXingResultMetadataType, RXingResultMetadataValue, RXingResultPoint};
 
+#[cfg(feature = "serde")]
+use serde::{Deserialize, Serialize};
+
 /**
  * <p>Encapsulates the result of decoding a barcode within an image.</p>
  *
  * @author Sean Owen
  */
+#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
 #[derive(Clone)]
 pub struct RXingResult {
     text: String,

src/rxing_result_metadata.rs

@@ -20,12 +20,16 @@ use std::rc::Rc;
 
 use crate::pdf417::PDF417RXingResultMetadata;
 
+#[cfg(feature = "serde")]
+use serde::{Deserialize, Serialize};
+
 /**
  * Represents some type of metadata about the result of the decoding that the decoder
  * wishes to communicate back to the caller.
  *
  * @author Sean Owen
  */
+#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
 #[derive(Eq, PartialEq, Hash, Debug, Clone)]
 pub enum RXingResultMetadataType {
     /**
@@ -126,6 +130,7 @@ impl From<String> for RXingResultMetadataType {
     }
 }
 
+#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
 #[derive(Debug, PartialEq, Eq, Clone)]
 pub enum RXingResultMetadataValue {
     /**

src/rxing_result_point.rs

@@ -3,12 +3,16 @@ use std::{fmt, iter::Sum};
 use crate::ResultPoint;
 use std::hash::Hash;
 
+#[cfg(feature = "serde")]
+use serde::{Deserialize, Serialize};
+
 /**
  * <p>Encapsulates a point of interest in an image containing a barcode. Typically, this
  * would be the location of a finder pattern or the corner of the barcode, for example.</p>
  *
  * @author Sean Owen
  */
+#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
 #[derive(Debug, Clone, Copy, Default)]
 pub struct RXingResultPoint {
     pub(crate) x: f32,