From 6478fb24c1dc210577ac57baa902e55f3bc3a169 Mon Sep 17 00:00:00 2001
From: Miguel Lechon <miguel.lechon@gmail.com>
Date: Sat, 27 Mar 2021 15:47:54 +0100
Subject: [PATCH] Error for MD_ParseWholeFile of missing file.

---
 source/md_impl.c     | 12 +++++++++++-
 tests/sanity_tests.c |  8 +++++++-
 2 files changed, 18 insertions(+), 2 deletions(-)

diff --git a/source/md_impl.c b/source/md_impl.c
index 11d3d1d..145d9c5 100644
--- a/source/md_impl.c
+++ b/source/md_impl.c
@@ -1562,6 +1562,7 @@ _MD_Error(MD_ParseCtx *ctx, MD_Node *node, MD_MessageKind kind, char *fmt, ...)
     {
         MD_Error *error = _MD_PushArray(_MD_GetCtx(), MD_Error, 1);
         error->node = node;
+        error->kind = kind;
         va_list args;
         va_start(args, fmt);
         error->string = MD_PushStringFV(fmt, args);
@@ -2144,7 +2145,16 @@ MD_ParseWholeString(MD_String8 filename, MD_String8 contents)
 MD_FUNCTION_IMPL MD_ParseResult
 MD_ParseWholeFile(MD_String8 filename)
 {
-    return MD_ParseWholeString(filename, MD_LoadEntireFile(filename));
+    MD_String8 file_contents = MD_LoadEntireFile(filename);
+    MD_ParseResult parse = MD_ParseWholeString(filename, file_contents);
+    if(file_contents.str == 0)
+    {
+        MD_ParseCtx ctx = MD_Parse_InitializeCtx(filename, MD_S8Lit(""));
+        _MD_Error(&ctx, parse.node, MD_MessageKind_CatastrophicError, "Could not read file \"%.*s\"",
+                  MD_StringExpand(filename));
+        parse.first_error = ctx.first_error;
+    }
+    return parse;
 }
 
 MD_FUNCTION_IMPL MD_b32
diff --git a/tests/sanity_tests.c b/tests/sanity_tests.c
index 42b4906..e3c4382 100644
--- a/tests/sanity_tests.c
+++ b/tests/sanity_tests.c
@@ -446,7 +446,7 @@ int main(void)
         }
     }
 
-    Test("Syntax Errors")
+    Test("Errors")
     {
         struct { char *s; int columns[2]; } tests[] = {
             {"{", {1}},
@@ -486,6 +486,12 @@ int main(void)
             }
             TestResult(columns_match);
         }
+
+        {
+            MD_ParseResult parse = MD_ParseWholeFile(MD_S8Lit("__does_not_exist.md"));
+            TestResult(parse.node->kind == MD_NodeKind_File && parse.first_error);
+        }
+
     }
 
     Test("Hash maps")