From 661d6e2414ee59889316fde7dc68fb2eaf0e55f1 Mon Sep 17 00:00:00 2001
From: Prerak Mann <mannprerak2@gmail.com>
Date: Sat, 18 Nov 2023 19:00:34 +0530
Subject: [PATCH] nit

---
 pkgs/ffigen/lib/src/header_parser/data.dart   |  5 +++++
 pkgs/ffigen/lib/src/header_parser/parser.dart |  9 ++-------
 pkgs/ffigen/lib/src/header_parser/utils.dart  | 15 ++++++---------
 3 files changed, 13 insertions(+), 16 deletions(-)

diff --git a/pkgs/ffigen/lib/src/header_parser/data.dart b/pkgs/ffigen/lib/src/header_parser/data.dart
index 5bd4e903a..1ee8f27d4 100644
--- a/pkgs/ffigen/lib/src/header_parser/data.dart
+++ b/pkgs/ffigen/lib/src/header_parser/data.dart
@@ -45,6 +45,10 @@ List<Constant> _unnamedEnumConstants = [];
 ObjCBuiltInFunctions get objCBuiltInFunctions => _objCBuiltInFunctions;
 late ObjCBuiltInFunctions _objCBuiltInFunctions;
 
+/// Tracks if any source error/warning has occured which can potentially cause
+///  invalid generated bindings.
+bool hasSourceErrors = false;
+
 void initializeGlobals({required Config config}) {
   _config = config;
   _clang = Clang(DynamicLibrary.open(config.libclangDylib));
@@ -54,4 +58,5 @@ void initializeGlobals({required Config config}) {
   _cursorIndex = CursorIndex();
   _bindingsIndex = BindingsIndex();
   _objCBuiltInFunctions = ObjCBuiltInFunctions();
+  hasSourceErrors = false;
 }
diff --git a/pkgs/ffigen/lib/src/header_parser/parser.dart b/pkgs/ffigen/lib/src/header_parser/parser.dart
index 893cc6115..c7ff18995 100644
--- a/pkgs/ffigen/lib/src/header_parser/parser.dart
+++ b/pkgs/ffigen/lib/src/header_parser/parser.dart
@@ -4,7 +4,6 @@
 
 import 'dart:ffi';
 import 'dart:io';
-import 'dart:math' show max;
 
 import 'package:ffi/ffi.dart';
 import 'package:ffigen/src/code_generator.dart';
@@ -85,8 +84,6 @@ List<Binding> parseToBindings(Config c) {
 
   final tuList = <Pointer<clang_types.CXTranslationUnitImpl>>[];
 
-  var highestDiagnosticLevel =
-      clang_types.CXDiagnosticSeverity.CXDiagnostic_Ignored;
   // Parse all translation units from entry points.
   for (final headerLocation in config.headers.entryPoints) {
     _logger.fine('Creating TranslationUnit for header: $headerLocation');
@@ -112,13 +109,11 @@ List<Binding> parseToBindings(Config c) {
       continue;
     }
 
-    final diagnosticsLevel = logTuDiagnostics(tu, _logger, headerLocation);
-    highestDiagnosticLevel = max(highestDiagnosticLevel, diagnosticsLevel);
+    logTuDiagnostics(tu, _logger, headerLocation);
     tuList.add(tu);
   }
 
-  if (highestDiagnosticLevel >=
-      clang_types.CXDiagnosticSeverity.CXDiagnostic_Warning) {
+  if (hasSourceErrors) {
     _logger.severe(
         "The compiler found some warnings/errors in source files. This might generate invalid bindings due to a wrong compiler guess.");
     if (config.ignoreSourceErrors) {
diff --git a/pkgs/ffigen/lib/src/header_parser/utils.dart b/pkgs/ffigen/lib/src/header_parser/utils.dart
index 3945b9665..423d7cdba 100644
--- a/pkgs/ffigen/lib/src/header_parser/utils.dart
+++ b/pkgs/ffigen/lib/src/header_parser/utils.dart
@@ -3,7 +3,6 @@
 // BSD-style license that can be found in the LICENSE file.
 
 import 'dart:ffi';
-import 'dart:math' show max;
 
 import 'package:ffi/ffi.dart';
 import 'package:ffigen/src/code_generator.dart';
@@ -30,21 +29,20 @@ void visitChildrenResultChecker(int resultCode) {
 }
 
 /// Logs the warnings/errors returned by clang for a translation unit.
-///
-/// Returns the highest [clang_types.CXDiagnosticSeverity] seen, defaults to
-/// [clang_types.CXDiagnosticSeverity.CXDiagnostic_Ignored] if none.
-int logTuDiagnostics(
+void logTuDiagnostics(
     Pointer<clang_types.CXTranslationUnitImpl> tu, Logger logger, String header,
     {Level logLevel = Level.SEVERE}) {
-  var result = clang_types.CXDiagnosticSeverity.CXDiagnostic_Ignored;
   final total = clang.clang_getNumDiagnostics(tu);
   if (total == 0) {
-    return result;
+    return;
   }
   logger.log(logLevel, 'Header $header: Total errors/warnings: $total.');
   for (var i = 0; i < total; i++) {
     final diag = clang.clang_getDiagnostic(tu, i);
-    result = max(result, clang.clang_getDiagnosticSeverity(diag));
+    if (clang.clang_getDiagnosticSeverity(diag) >=
+        clang_types.CXDiagnosticSeverity.CXDiagnostic_Warning) {
+      hasSourceErrors = true;
+    }
     final cxstring = clang.clang_formatDiagnostic(
       diag,
       clang_types
@@ -56,7 +54,6 @@ int logTuDiagnostics(
     logger.log(logLevel, '    ${cxstring.toStringAndDispose()}');
     clang.clang_disposeDiagnostic(diag);
   }
-  return result;
 }
 
 extension CXSourceRangeExt on Pointer<clang_types.CXSourceRange> {