From 17993103e1ba1d142205eb2e41291edebc0e3a89 Mon Sep 17 00:00:00 2001
From: _ov4 <ov4@ov4.org>
Date: Thu, 22 Oct 2026 15:14:35 +0000
Subject: fix(parser): report missing THEN and ')' on the line that needs them

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
---
 include/cps/Parser.h | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'include')

diff --git a/include/cps/Parser.h b/include/cps/Parser.h
index eff25a5..e710150 100644
--- a/include/cps/Parser.h
+++ b/include/cps/Parser.h
@@ -19,6 +19,7 @@ class Parser {
     Lexer &Lex;
     int CurTok = tok_eof;
     bool StartsLine = true;
+    int PrevTokLine = 0; // line of the token before CurTok
     bool ParsingCaseLabel = false;
     std::vector<unsigned> CaseBodyDepths;
     unsigned NumErrors = 0;
@@ -33,6 +34,9 @@ class Parser {
     };
 
     void getNextToken();
+    // Line for a diagnostic about a token missing before CurTok: the previous
+    // line when CurTok starts a new one.
+    int missingLine() const { return StartsLine ? PrevTokLine : Lex.getLine(); }
     int GetTokPrecedence();
 
     std::unique_ptr<ExprAST> ParseExpression();
-- 
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