From 21cd87cee68108712aaba82e2b0c47ebdd6a70be Mon Sep 17 00:00:00 2001
From: lizhenhua <lizhenhua@sina.com>
Date: Wed, 10 Jun 2020 17:34:25 +0800
Subject: [PATCH] Fix compiler errors

---
 lib/equation-parser.vala | 6 +++---
 lib/math-equation.vala   | 4 ++--
 2 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/lib/equation-parser.vala b/lib/equation-parser.vala
index 668e1cd..f919d37 100644
--- a/lib/equation-parser.vala
+++ b/lib/equation-parser.vala
@@ -76,7 +76,7 @@ public class ParseNode : Object
     public ParseNode.WithList (Parser parser, List<LexerToken> token_list, uint precedence, Associativity associativity, string? value = null)
     {
         this.parser = parser;
-        this.token_list = token_list.copy();
+        this.token_list = token_list.copy_deep((CopyFunc) Object.ref);
         this.precedence = precedence;
         this.associativity = associativity;
         this.value = value;
@@ -101,7 +101,7 @@ public class ParseNode : Object
 
 public abstract class RNode : ParseNode
 {
-    public RNode (Parser parser, LexerToken? token, uint precedence, Associativity associativity)
+    protected RNode (Parser parser, LexerToken? token, uint precedence, Associativity associativity)
     {
         base (parser, token, precedence, associativity);
     }
@@ -132,7 +132,7 @@ public abstract class RNode : ParseNode
 
 public abstract class LRNode : ParseNode
 {
-    public LRNode (Parser parser, LexerToken? token, uint precedence, Associativity associativity)
+    protected LRNode (Parser parser, LexerToken? token, uint precedence, Associativity associativity)
     {
         base (parser, token, precedence, associativity);
     }
diff --git a/lib/math-equation.vala b/lib/math-equation.vala
index bb9c771..65b10ab 100644
--- a/lib/math-equation.vala
+++ b/lib/math-equation.vala
@@ -824,7 +824,7 @@ public class MathEquation : Gtk.SourceBuffer
         {
             Gtk.TextIter iter;
             get_iter_at_mark (out iter, get_insert ());
-            (this as Gtk.TextBuffer).backspace (iter, true, true);
+            (this as Gtk.TextBuffer).backspace (ref iter, true, true);
             insert_at_cursor ("^", -1);
             return;
         }
@@ -1245,7 +1245,7 @@ public class MathEquation : Gtk.SourceBuffer
         {
             Gtk.TextIter iter;
             get_iter_at_mark (out iter, get_insert ());
-            (this as Gtk.TextBuffer).backspace (iter, true, true);
+            (this as Gtk.TextBuffer).backspace (ref iter, true, true);
         }
     }
 
-- 
2.23.0

