Rename markdown `Header` to `Heading` to avoid ambiguity and for consistency with MD/HTML standards

DiscordChatExporter.Core/Exporting/HtmlMarkdownVisitor.cs

@@ -89,20 +89,20 @@ internal partial class HtmlMarkdownVisitor : MarkdownVisitor
         _buffer.Append(closingTag);
     }
 
-    protected override async ValueTask VisitHeaderAsync(
-        HeaderNode header,
+    protected override async ValueTask VisitHeadingAsync(
+        HeadingNode heading,
         CancellationToken cancellationToken = default)
     {
         _buffer.Append(
             // lang=html
-            $"<h{header.Level}>"
+            $"<h{heading.Level}>"
         );
 
-        await VisitAsync(header.Children, cancellationToken);
+        await VisitAsync(heading.Children, cancellationToken);
 
         _buffer.Append(
             // lang=html
-            $"</h{header.Level}>"
+            $"</h{heading.Level}>"
         );
     }
 

DiscordChatExporter.Core/Markdown/HeadingNode.cs

@@ -2,7 +2,7 @@
 
 namespace DiscordChatExporter.Core.Markdown;
 
-internal record HeaderNode(
+internal record HeadingNode(
     int Level,
     IReadOnlyList<MarkdownNode> Children
 ) : MarkdownNode, IContainerNode;

DiscordChatExporter.Core/Markdown/Parsing/MarkdownParser.cs

@@ -95,10 +95,10 @@ internal static partial class MarkdownParser
         (s, m) => new FormattingNode(FormattingKind.Quote, Parse(s.Relocate(m.Groups[1])))
     );
 
-    private static readonly IMatcher<MarkdownNode> HeaderNodeMatcher = new RegexMatcher<MarkdownNode>(
+    private static readonly IMatcher<MarkdownNode> HeadingNodeMatcher = new RegexMatcher<MarkdownNode>(
         // Consume the linebreak so that it's not attached to following nodes.
         new Regex(@"^(\#{1,3})\s(.+)\n", DefaultRegexOptions),
-        (s, m) => new HeaderNode(m.Groups[1].Length, Parse(s.Relocate(m.Groups[2])))
+        (s, m) => new HeadingNode(m.Groups[1].Length, Parse(s.Relocate(m.Groups[2])))
     );
 
     private static readonly IMatcher<MarkdownNode> ListNodeMatcher = new RegexMatcher<MarkdownNode>(
@@ -330,7 +330,7 @@ internal static partial class MarkdownParser
         MultiLineQuoteNodeMatcher,
         RepeatedSingleLineQuoteNodeMatcher,
         SingleLineQuoteNodeMatcher,
-        HeaderNodeMatcher,
+        HeadingNodeMatcher,
         ListNodeMatcher,
 
         // Code blocks

DiscordChatExporter.Core/Markdown/Parsing/MarkdownVisitor.cs

@@ -16,10 +16,10 @@ internal abstract class MarkdownVisitor
         CancellationToken cancellationToken = default) =>
         await VisitAsync(formatting.Children, cancellationToken);
 
-    protected virtual async ValueTask VisitHeaderAsync(
-        HeaderNode header,
+    protected virtual async ValueTask VisitHeadingAsync(
+        HeadingNode heading,
         CancellationToken cancellationToken = default) =>
-        await VisitAsync(header.Children, cancellationToken);
+        await VisitAsync(heading.Children, cancellationToken);
 
     protected virtual async ValueTask VisitListAsync(
         ListNode list,
@@ -72,9 +72,9 @@ internal abstract class MarkdownVisitor
             return;
         }
 
-        if (node is HeaderNode header)
+        if (node is HeadingNode heading)
         {
-            await VisitHeaderAsync(header, cancellationToken);
+            await VisitHeadingAsync(heading, cancellationToken);
             return;
         }