From c08d7a4733aa07cc04130bdb2baa05b42a5a52da Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=C3=89milie=20Feral?= <emilie.feral@numworks.com>
Date: Fri, 26 Jul 2019 16:51:36 +0200
Subject: [PATCH] [poincare] Add Parentheses around conjugate expression to
 easen reading: conj(2+i)*2 --> (conj(2+i))*2

---
 poincare/src/addition.cpp       | 3 +++
 poincare/src/multiplication.cpp | 3 +++
 poincare/src/subtraction.cpp    | 3 +++
 3 files changed, 9 insertions(+)

diff --git a/poincare/src/addition.cpp b/poincare/src/addition.cpp
index 1232c432f..f7cd99964 100644
--- a/poincare/src/addition.cpp
+++ b/poincare/src/addition.cpp
@@ -35,6 +35,9 @@ bool AdditionNode::childNeedsUserParentheses(const Expression & child) const {
        && child.node() != childAtIndex(0)) {
     return true;
   }
+  if (child.type() == Type::Conjugate) {
+    return childNeedsUserParentheses(child.childAtIndex(0));
+  }
   return false;
 }
 
diff --git a/poincare/src/multiplication.cpp b/poincare/src/multiplication.cpp
index 2fd143fcd..8cf9a3226 100644
--- a/poincare/src/multiplication.cpp
+++ b/poincare/src/multiplication.cpp
@@ -75,6 +75,9 @@ bool MultiplicationNode::childNeedsUserParentheses(const Expression & child) con
     }
     return true;
   }
+  if (child.type() == Type::Conjugate) {
+    return childNeedsUserParentheses(child.childAtIndex(0));
+  }
   Type types[] = {Type::Subtraction, Type::Addition};
   return child.isOfType(types, 2);
 }
diff --git a/poincare/src/subtraction.cpp b/poincare/src/subtraction.cpp
index 1f09c2ec2..cee90b315 100644
--- a/poincare/src/subtraction.cpp
+++ b/poincare/src/subtraction.cpp
@@ -30,6 +30,9 @@ bool SubtractionNode::childNeedsUserParentheses(const Expression & child) const
   if (child.isNumber() && static_cast<const Number &>(child).sign() == Sign::Negative) {
     return true;
   }
+  if (child.type() == Type::Conjugate) {
+    return childNeedsUserParentheses(child.childAtIndex(0));
+  }
   Type types[] = {Type::Subtraction, Type::Opposite, Type::Addition};
   return child.isOfType(types, 3);
 }