From 5d0be616b7db41bdf6bc9f54d956f8d118548bd9 Mon Sep 17 00:00:00 2001
From: Jarred Sumner <jarred@jarredsumner.com>
Date: Wed, 13 Apr 2022 21:58:28 -0700
Subject: add some more assertions

---
 src/css_scanner.zig | 9 +++++++++
 1 file changed, 9 insertions(+)

(limited to 'src/css_scanner.zig')

diff --git a/src/css_scanner.zig b/src/css_scanner.zig
index 20577e215..95f68d987 100644
--- a/src/css_scanner.zig
+++ b/src/css_scanner.zig
@@ -891,11 +891,14 @@ pub fn NewWriter(
             };
         }
 
+        /// The Source must not be empty
         pub fn scan(
             writer: *Writer,
             log: *logger.Log,
             allocator: std.mem.Allocator,
         ) !void {
+            std.debug.assert(writer.source.contents.len > 0);
+
             var scanner = Scanner.init(
                 log,
 
@@ -906,11 +909,14 @@ pub fn NewWriter(
             try scanner.next(.scan, @TypeOf(writer), writer, scanChunk);
         }
 
+        /// The Source must not be empty
         pub fn append(
             writer: *Writer,
             log: *logger.Log,
             allocator: std.mem.Allocator,
         ) !usize {
+            std.debug.assert(writer.source.contents.len > 0);
+
             var scanner = Scanner.init(
                 log,
 
@@ -923,11 +929,14 @@ pub fn NewWriter(
             return scanner.approximate_newline_count;
         }
 
+        /// The Source must not be empty
         pub fn run(
             writer: *Writer,
             log: *logger.Log,
             allocator: std.mem.Allocator,
         ) !void {
+            std.debug.assert(writer.source.contents.len > 0);
+
             var scanner = Scanner.init(
                 log,
 
-- 
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