Add default for most readers

src/aztec/aztec_reader.rs

@@ -30,6 +30,7 @@ use super::{decoder, detector::Detector};
  *
  * @author David Olivier
  */
+#[derive(Default)]
 pub struct AztecReader;
 
 impl Reader for AztecReader {

src/datamatrix/data_matrix_reader.rs

@@ -35,6 +35,7 @@ lazy_static! {
  *
  * @author bbrown@google.com (Brian Brown)
  */
+#[derive(Default)]
 pub struct DataMatrixReader;
 
 // private static final RXingResultPoint[] NO_POINTS = new RXingResultPoint[0];

src/maxicode/maxi_code_reader.rs

@@ -25,6 +25,7 @@ use super::decoder::decoder;
 /**
  * This implementation can detect and decode a MaxiCode in an image.
  */
+#[derive(Default)]
 pub struct MaxiCodeReader {
     // private final Decoder decoder = new Decoder();
 }

src/multi/generic_multiple_barcode_reader.rs

@@ -37,6 +37,7 @@ use super::MultipleBarcodeReader;
  *
  * @author Sean Owen
  */
+#[derive(Default)]
 pub struct GenericMultipleBarcodeReader<T: Reader>(T);
 
 impl<T: Reader> MultipleBarcodeReader for GenericMultipleBarcodeReader<T> {

src/multi/qrcode/qr_code_multi_reader.rs

@@ -34,6 +34,7 @@ use super::detector::MultiDetector;
  * @author Sean Owen
  * @author Hannes Erven
  */
+#[derive(Default)]
 pub struct QRCodeMultiReader(QRCodeReader);
 impl MultipleBarcodeReader for QRCodeMultiReader {
     fn decode_multiple(

src/multi_format_reader.rs

@@ -131,19 +131,19 @@ impl MultiFormatReader {
                 readers.push(Box::new(MultiFormatOneDReader::new(hints)));
             }
             if formats.contains(&BarcodeFormat::QR_CODE) {
-                readers.push(Box::new(QRCodeReader {}));
+                readers.push(Box::<QRCodeReader>::default());
             }
             if formats.contains(&BarcodeFormat::DATA_MATRIX) {
-                readers.push(Box::new(DataMatrixReader {}));
+                readers.push(Box::<DataMatrixReader>::default());
             }
             if formats.contains(&BarcodeFormat::AZTEC) {
-                readers.push(Box::new(AztecReader {}));
+                readers.push(Box::<AztecReader>::default());
             }
             if formats.contains(&BarcodeFormat::PDF_417) {
-                readers.push(Box::new(PDF417Reader {}));
+                readers.push(Box::<PDF417Reader>::default());
             }
             if formats.contains(&BarcodeFormat::MAXICODE) {
-                readers.push(Box::new(MaxiCodeReader {}));
+                readers.push(Box::<MaxiCodeReader>::default());
             }
             // At end in "try harder" mode
             if addOneDReader && tryHarder {
@@ -155,11 +155,11 @@ impl MultiFormatReader {
                 readers.push(Box::new(MultiFormatOneDReader::new(hints)));
             }
 
-            readers.push(Box::new(QRCodeReader {}));
-            readers.push(Box::new(DataMatrixReader {}));
-            readers.push(Box::new(AztecReader {}));
-            readers.push(Box::new(PDF417Reader {}));
-            readers.push(Box::new(MaxiCodeReader {}));
+            readers.push(Box::<QRCodeReader>::default());
+            readers.push(Box::<DataMatrixReader>::default());
+            readers.push(Box::<AztecReader>::default());
+            readers.push(Box::<PDF417Reader>::default());
+            readers.push(Box::<MaxiCodeReader>::default());
             // unimplemented!("");
 
             if tryHarder {

src/oned/code_39_reader.rs

@@ -27,7 +27,7 @@ use super::{one_d_reader, OneDReader};
  * @author Sean Owen
  * @see Code93Reader
  */
-#[derive(OneDReader)]
+#[derive(OneDReader,Default)]
 pub struct Code39Reader {
     usingCheckDigit: bool,
     extendedMode: bool,

src/oned/code_93_reader.rs

@@ -26,7 +26,7 @@ use super::{one_d_reader, OneDReader};
  * @author Sean Owen
  * @see Code39Reader
  */
-#[derive(OneDReader)]
+#[derive(OneDReader,Default)]
 pub struct Code93Reader {
     decodeRowRXingResult: String,
     counters: [u32; 6],

src/oned/multi_format_one_d_reader.rs

@@ -31,6 +31,7 @@ use crate::Exceptions;
  * @author dswitkin@google.com (Daniel Switkin)
  * @author Sean Owen
  */
+#[derive(Default)]
 pub struct MultiFormatOneDReader(Vec<Box<dyn OneDReader>>);
 impl OneDReader for MultiFormatOneDReader {
     fn decodeRow(
@@ -77,33 +78,33 @@ impl MultiFormatOneDReader {
                 )));
             }
             if possibleFormats.contains(&BarcodeFormat::CODE_93) {
-                readers.push(Box::new(Code93Reader::new()));
+                readers.push(Box::<Code93Reader>::default());
             }
             if possibleFormats.contains(&BarcodeFormat::CODE_128) {
-                readers.push(Box::new(Code128Reader {}));
+                readers.push(Box::<Code128Reader>::default());
             }
             if possibleFormats.contains(&BarcodeFormat::ITF) {
-                readers.push(Box::new(ITFReader::default()));
+                readers.push(Box::<ITFReader>::default());
             }
             if possibleFormats.contains(&BarcodeFormat::CODABAR) {
-                readers.push(Box::new(CodaBarReader::new()));
+                readers.push(Box::<CodaBarReader>::default());
             }
             if possibleFormats.contains(&BarcodeFormat::RSS_14) {
-                readers.push(Box::new(RSS14Reader::new()));
+                readers.push(Box::<RSS14Reader>::default());
             }
             if possibleFormats.contains(&BarcodeFormat::RSS_EXPANDED) {
-                readers.push(Box::new(RSSExpandedReader::new()));
+                readers.push(Box::<RSSExpandedReader>::default());
             }
         }
         if readers.is_empty() {
             readers.push(Box::new(MultiFormatUPCEANReader::new(hints)));
-            readers.push(Box::new(Code39Reader::new()));
-            readers.push(Box::new(CodaBarReader::new()));
-            readers.push(Box::new(Code93Reader::new()));
-            readers.push(Box::new(Code128Reader {}));
-            readers.push(Box::new(ITFReader::default()));
-            readers.push(Box::new(RSS14Reader::new()));
-            readers.push(Box::new(RSSExpandedReader::new()));
+            readers.push(Box::<Code39Reader>::default());
+            readers.push(Box::<CodaBarReader>::default());
+            readers.push(Box::<Code93Reader>::default());
+            readers.push(Box::<Code128Reader>::default());
+            readers.push(Box::<ITFReader>::default());
+            readers.push(Box::<RSS14Reader>::default());
+            readers.push(Box::<RSSExpandedReader>::default());
         }
 
         Self(readers)

src/oned/rss/rss_14_reader.rs

@@ -30,6 +30,7 @@ use super::{
 /**
  * Decodes RSS-14, including truncated and stacked variants. See ISO/IEC 24724:2006.
  */
+#[derive(Default)]
 pub struct RSS14Reader {
     possibleLeftPairs: Vec<Pair>,
     possibleRightPairs: Vec<Pair>,

src/qrcode/qr_code_reader.rs

@@ -32,6 +32,7 @@ use super::{
  *
  * @author Sean Owen
  */
+#[derive(Default)]
 pub struct QRCodeReader;
 // pub struct QRCodeReader;  {