From fef5972d2344862060c97d5810fd77147346072e Mon Sep 17 00:00:00 2001
From: Stefan Weil <sw@weilnetz.de>
Date: Sun, 30 Apr 2017 14:41:29 +0200
Subject: [PATCH] EquationDetect: Remove unneeded new / delete operations

Signed-off-by: Stefan Weil <sw@weilnetz.de>
---
 ccmain/equationdetect.cpp | 27 +++++++++------------------
 ccmain/equationdetect.h   |  3 ++-
 2 files changed, 11 insertions(+), 19 deletions(-)

diff --git a/ccmain/equationdetect.cpp b/ccmain/equationdetect.cpp
index 91c3620e55..7e1d2a232d 100644
--- a/ccmain/equationdetect.cpp
+++ b/ccmain/equationdetect.cpp
@@ -108,30 +108,21 @@ EquationDetect::EquationDetect(const char* equ_datapath,
   if (equ_name == NULL) {
     equ_name = default_name;
   }
-  equ_tesseract_ = lang_tesseract_ = NULL;
+  lang_tesseract_ = NULL;
   resolution_ = 0;
   page_count_ = 0;
 
-  // Construct equ_tesseract_.
-  equ_tesseract_ = new Tesseract();
-  if (equ_tesseract_->init_tesseract(equ_datapath, equ_name,
-                                     OEM_TESSERACT_ONLY)) {
+  if (equ_tesseract_.init_tesseract(equ_datapath, equ_name,
+                                    OEM_TESSERACT_ONLY)) {
     tprintf("Warning: equation region detection requested,"
             " but %s failed to load from %s\n", equ_name, equ_datapath);
-    delete equ_tesseract_;
-    equ_tesseract_ = NULL;
   }
 
   cps_super_bbox_ = NULL;
 }
 
 EquationDetect::~EquationDetect() {
-  if (equ_tesseract_) {
-    delete (equ_tesseract_);
-  }
-  if (cps_super_bbox_) {
-    delete(cps_super_bbox_);
-  }
+  delete(cps_super_bbox_);
 }
 
 void EquationDetect::SetLangTesseract(Tesseract* lang_tesseract) {
@@ -186,7 +177,7 @@ void EquationDetect::IdentifySpecialText(
   normed_blob->Normalize(NULL, NULL, NULL, x_orig, y_orig, scaling, scaling,
                          0.0f, static_cast<float>(kBlnBaselineOffset),
                          false, NULL);
-  equ_tesseract_->AdaptiveClassifier(normed_blob, &ratings_equ);
+  equ_tesseract_.AdaptiveClassifier(normed_blob, &ratings_equ);
   lang_tesseract_->AdaptiveClassifier(normed_blob, &ratings_lang);
   delete normed_blob;
   delete tblob;
@@ -272,8 +263,8 @@ BlobSpecialTextType EquationDetect::EstimateTypeForUnichar(
 
 void EquationDetect::IdentifySpecialText() {
   // Set configuration for Tesseract::AdaptiveClassifier.
-  equ_tesseract_->tess_cn_matching.set_value(true);  // turn it on
-  equ_tesseract_->tess_bn_matching.set_value(false);
+  equ_tesseract_.tess_cn_matching.set_value(true);  // turn it on
+  equ_tesseract_.tess_bn_matching.set_value(false);
 
   // Set the multiplier to zero for lang_tesseract_ to improve the accuracy.
   int classify_class_pruner = lang_tesseract_->classify_class_pruner_multiplier;
@@ -372,8 +363,8 @@ void EquationDetect::IdentifyBlobsToSkip(ColPartition* part) {
 
 int EquationDetect::FindEquationParts(
     ColPartitionGrid* part_grid, ColPartitionSet** best_columns) {
-  if (!equ_tesseract_ || !lang_tesseract_) {
-    tprintf("Warning: equ_tesseract_/lang_tesseract_ is NULL!\n");
+  if (!lang_tesseract_) {
+    tprintf("Warning: lang_tesseract_ is NULL!\n");
     return -1;
   }
   if (!part_grid || !best_columns) {
diff --git a/ccmain/equationdetect.h b/ccmain/equationdetect.h
index ddfdf5f5c9..9dff5a7681 100644
--- a/ccmain/equationdetect.h
+++ b/ccmain/equationdetect.h
@@ -23,6 +23,7 @@
 #include "blobbox.h"
 #include "equationdetectbase.h"
 #include "genericvector.h"
+#include "tesseractclass.h"
 #include "unichar.h"
 
 class BLOBNBOX;
@@ -244,7 +245,7 @@ class EquationDetect : public EquationDetectBase {
   void PrintSpecialBlobsDensity(const ColPartition* part) const;
 
   // The tesseract engine intialized from equation training data.
-  Tesseract* equ_tesseract_;
+  Tesseract equ_tesseract_;
 
   // The tesseract engine used for OCR. This pointer is passed in by the caller,
   // so do NOT destroy it in this class.