[gnome-calculator] GCalc: Renamed GErrorExpression to ErrorExpression

[Daniel Espinosa Ortiz <despinosa src gnome org>]

commit 6f355b4b30ad855524d0fa6b84bd8e509ac76bff
Author: Daniel Espinosa <esodan gmail com>
Date:   Thu Oct 17 13:56:49 2019 -0500

    GCalc: Renamed GErrorExpression to ErrorExpression
    
    Removed MathErrorExpression interface

 gcalc/gcalc-error-result.vala    | 2 +-
 gcalc/gcalc-expression.vala      | 4 ++--
 gcalc/gcalc-function.vala        | 2 +-
 gcalc/gcalc-math-expression.vala | 6 ------
 gcalc/gcalc-math-polynomial.vala | 2 +-
 gcalc/gcalc-math-term.vala       | 2 +-
 6 files changed, 6 insertions(+), 12 deletions(-)
---
diff --git a/gcalc/gcalc-error-result.vala b/gcalc/gcalc-error-result.vala
index 2fcc0c44..6f2c5b3f 100644
--- a/gcalc/gcalc-error-result.vala
+++ b/gcalc/gcalc-error-result.vala
@@ -30,7 +30,7 @@ public class GCalc.ErrorResult : Object, MathResult, MathErrorResult {
 
   public ErrorResult (string msg) {
     this.msg = msg;
-    _expression = new GErrorExpression ();
+    _expression = new ErrorExpression ();
   }
   // Result
   public MathExpression expression { get { return _expression; } }
diff --git a/gcalc/gcalc-expression.vala b/gcalc/gcalc-expression.vala
index abfd758b..77ce72a5 100644
--- a/gcalc/gcalc-expression.vala
+++ b/gcalc/gcalc-expression.vala
@@ -42,7 +42,7 @@ public class GCalc.Expression : Object, MathExpression {
 }
 
 /**
- * An implementation of {@link MathErrorExpression}
+ * Represent an expression in error condition
  */
-public class GCalc.GErrorExpression : Expression, MathErrorExpression {}
+public class GCalc.ErrorExpression : Expression {}
 
diff --git a/gcalc/gcalc-function.vala b/gcalc/gcalc-function.vala
index 46c71ef6..d0b26314 100644
--- a/gcalc/gcalc-function.vala
+++ b/gcalc/gcalc-function.vala
@@ -53,7 +53,7 @@ public class GCalc.Function : Expression, MathFunction, Hashable {
   }
 
   internal virtual MathExpression evaluate () throws GLib.Error {
-    return new GErrorExpression ();
+    return new ErrorExpression ();
   }
   // Hashable
   internal uint hash () {
diff --git a/gcalc/gcalc-math-expression.vala b/gcalc/gcalc-math-expression.vala
index 2f84f585..9beabc41 100644
--- a/gcalc/gcalc-math-expression.vala
+++ b/gcalc/gcalc-math-expression.vala
@@ -40,9 +40,3 @@ public interface GCalc.MathExpression : Object {
   public abstract MathResult solve ();
 }
 
-/**
- * Represent an expression in error condition
- */
-public interface GCalc.MathErrorExpression : Object, MathExpression {
-}
-
diff --git a/gcalc/gcalc-math-polynomial.vala b/gcalc/gcalc-math-polynomial.vala
index 6cd742f6..95065439 100644
--- a/gcalc/gcalc-math-polynomial.vala
+++ b/gcalc/gcalc-math-polynomial.vala
@@ -56,7 +56,7 @@ public interface GCalc.MathPolynomial : Object, MathExpression {
       }
     }
     if (res == null) {
-      return new GErrorExpression ();
+      return new ErrorExpression ();
     }
     return res;
   }
diff --git a/gcalc/gcalc-math-term.vala b/gcalc/gcalc-math-term.vala
index b29d14b4..6f14426e 100644
--- a/gcalc/gcalc-math-term.vala
+++ b/gcalc/gcalc-math-term.vala
@@ -31,7 +31,7 @@ public interface GCalc.MathTerm : Object, MathExpression {
     if (t.expressions.get_n_items () == 0) {
       return new Constant.@double (1.0);
     }
-    MathExpression res = new GErrorExpression ();
+    MathExpression res = new ErrorExpression ();
     var e = evaluate ();
     var e2 = t.evaluate ();
     if (e is MathConstant && e2 is MathConstant) {