From 1241f44fd48d64fd6b4f930f08ccf38ce36b6d27 Mon Sep 17 00:00:00 2001
From: Ed_ <edwardgz@gmail.com>
Date: Mon, 21 Aug 2023 20:27:00 -0400
Subject: [PATCH] scan_file function can auto skips pragma once and includes

Needed so that includes could be added to components so that intellisense would not fail since the parser (for most editors) doesn't properly parse the enviornment and cheats on a per-file basis.
---
 project/auxillary/scanner.hpp | 60 +++++++++++++++++++++++++++++++++--
 1 file changed, 58 insertions(+), 2 deletions(-)

diff --git a/project/auxillary/scanner.hpp b/project/auxillary/scanner.hpp
index e9dd3ef..b070a61 100644
--- a/project/auxillary/scanner.hpp
+++ b/project/auxillary/scanner.hpp
@@ -1,4 +1,7 @@
-Code scan_file( char const* path )
+// This is a simple file reader that reads the entire file into memory.
+// It has an extra option to skip the first few lines for undesired includes.
+// This is done so that includes can be kept in dependency and component files so that intellisense works.
+Code scan_file( char const* path, bool skip_header_includes = true )
 {
 	FileInfo file;
 
@@ -18,8 +21,61 @@ Code scan_file( char const* path )
 		file_read( & file, str, fsize );
 		str.get_header().Length = fsize;
 
-	file_close( & file );
+	if ( skip_header_includes )
+	{
+	#define current (*scanner)
+		StrC toks[] {
+			txt( "pragma once" ),
+			txt( "include" )
+		};
 
+		char* scanner = str;
+		while ( current != '\r' && current != '\n' )
+		{
+			for ( StrC tok : toks )
+			{
+				if ( current == '#' )
+				{
+					++ scanner;
+				}
+
+				if ( strncmp( scanner, tok.Ptr, tok.Len ) == 0 )
+				{
+					scanner += tok.Len;
+					while ( current != '\r' && current != '\n' )
+					{
+						++ scanner;
+					}
+
+					// Skip the line
+					sptr skip_size = sptr( scanner - str );
+					if ( current == '\r' )
+					{
+						skip_size += 2;
+						scanner   += 2;
+					}
+					else
+					{
+						skip_size += 1;
+						scanner   += 1;
+					}
+
+					sptr new_length = sptr( str.get_header().Length ) - skip_size;
+
+					// scanner -= skip_size;
+					mem_move( str, scanner, new_length );
+					str.get_header().Length = new_length;
+
+					scanner = str;
+				}
+			}
+
+			++ scanner;
+		}
+	#undef current
+	}
+
+	file_close( & file );
 	return untyped_str( str );
 }