From 662182637e100642d1e5de7cb193da837a14ae48 Mon Sep 17 00:00:00 2001
From: Deadbeef <ent3rm4n@gmail.com>
Date: Sat, 12 Apr 2025 15:53:46 +0000
Subject: Implement RFC 3503: frontmatters

Supercedes #137193
---
 compiler/rustc_parse/src/errors.rs | 55 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 55 insertions(+)

(limited to 'compiler/rustc_parse/src/errors.rs')

diff --git a/compiler/rustc_parse/src/errors.rs b/compiler/rustc_parse/src/errors.rs
index 6a6fb0eb9b5..9e5c81d44a5 100644
--- a/compiler/rustc_parse/src/errors.rs
+++ b/compiler/rustc_parse/src/errors.rs
@@ -735,6 +735,61 @@ pub(crate) struct FoundExprWouldBeStmt {
     pub suggestion: ExprParenthesesNeeded,
 }
 
+#[derive(Diagnostic)]
+#[diag(parse_frontmatter_extra_characters_after_close)]
+pub(crate) struct FrontmatterExtraCharactersAfterClose {
+    #[primary_span]
+    pub span: Span,
+}
+
+#[derive(Diagnostic)]
+#[diag(parse_frontmatter_invalid_infostring)]
+#[note]
+pub(crate) struct FrontmatterInvalidInfostring {
+    #[primary_span]
+    pub span: Span,
+}
+
+#[derive(Diagnostic)]
+#[diag(parse_frontmatter_invalid_opening_preceding_whitespace)]
+pub(crate) struct FrontmatterInvalidOpeningPrecedingWhitespace {
+    #[primary_span]
+    pub span: Span,
+    #[note]
+    pub note_span: Span,
+}
+
+#[derive(Diagnostic)]
+#[diag(parse_frontmatter_unclosed)]
+pub(crate) struct FrontmatterUnclosed {
+    #[primary_span]
+    pub span: Span,
+    #[note]
+    pub note_span: Span,
+}
+
+#[derive(Diagnostic)]
+#[diag(parse_frontmatter_invalid_close_preceding_whitespace)]
+pub(crate) struct FrontmatterInvalidClosingPrecedingWhitespace {
+    #[primary_span]
+    pub span: Span,
+    #[note]
+    pub note_span: Span,
+}
+
+#[derive(Diagnostic)]
+#[diag(parse_frontmatter_length_mismatch)]
+pub(crate) struct FrontmatterLengthMismatch {
+    #[primary_span]
+    pub span: Span,
+    #[label(parse_label_opening)]
+    pub opening: Span,
+    #[label(parse_label_close)]
+    pub close: Span,
+    pub len_opening: usize,
+    pub len_close: usize,
+}
+
 #[derive(Diagnostic)]
 #[diag(parse_leading_plus_not_supported)]
 pub(crate) struct LeadingPlusNotSupported {
-- 
cgit 1.4.1-3-g733a5