Replace single-char stream string literals with chars

Agent-Logs-Url: https://github.com/Cpp2Rust/cpp2rust/sessions/d26a087d-4f6f-4369-8882-2f9b02a87fcf

Co-authored-by: nunoplopes <2998477+nunoplopes@users.noreply.github.com>

Author: Copilot

cpp2rust/converter/converter.cpp

@@ -152,7 +152,7 @@ bool Converter::VisitRecordType(clang::RecordType *type) {
 }
 
 std::string Converter::ConvertPointer(clang::Expr *expr, int line) {
-  log() << "ConvertPointer called from line " << line << "\n";
+  log() << "ConvertPointer called from line " << line << '\n';
   PushExprKind push(*this, ExprKind::AddrOf);
   return ToString(expr);
 }
@@ -176,7 +176,7 @@ std::string Converter::ConvertLValue(clang::Expr *expr) {
 }
 
 std::string Converter::ConvertRValue(clang::Expr *expr, int line) {
-  log() << "ConvertRValue called from line " << line << "\n";
+  log() << "ConvertRValue called from line " << line << '\n';
   PushExprKind push(*this, ExprKind::RValue);
   return ToString(expr);
 }
@@ -1086,7 +1086,7 @@ bool Converter::VisitCXXForRangeStmt(clang::CXXForRangeStmt *stmt) {
     log() << "for range stmts only for types in std namespace\n";
   }
 
-  log() << "GetClassName: " << GetClassName(range_init_type) << "\n";
+  log() << "GetClassName: " << GetClassName(range_init_type) << '\n';
 
   if (GetClassName(range_init_type) == "std::map") {
     return VisitCXXForRangeStmtMap(stmt);
@@ -3582,7 +3582,7 @@ void Converter::ConvertDeref(clang::Expr *expr) {
 void Converter::ConvertArrow(clang::Expr *expr) { ConvertDeref(expr); }
 
 void Converter::ConvertCast(clang::QualType qual_type, int line) {
-  log() << "[ConvertCast] Called from line " << line << "\n";
+  log() << "[ConvertCast] Called from line " << line << '\n';
   StrCat(keyword::kAs, GetUnsafeTypeAsString(qual_type));
 }
 
@@ -3633,7 +3633,7 @@ void Converter::PlaceholderCtx::dump() const {
                << declared_in_rule_as_rust_ptr << ", access: "
                << (access == TranslationRule::Access::kRead ? "read" : "write")
                << ", param_type: " << param_type
-               << ", materialize_idx: " << materialize_idx << "\n";
+               << ", materialize_idx: " << materialize_idx << '\n';
 }
 
 std::string Converter::ConvertPlaceholder(clang::Expr *expr, clang::Expr *arg,
@@ -3844,7 +3844,7 @@ void Converter::SetFreshType(clang::QualType type) {
 void Converter::dump_expr_kinds() {
   log() << "isRValue: " << isRValue() << ", isXValue: " << isXValue()
         << ", isAddrOf: " << isAddrOf() << ", isObject: " << isObject()
-        << ", isVoid: " << isVoid() << "\n";
+        << ", isVoid: " << isVoid() << '\n';
 }
 
 void Converter::emplace_back_plugin_construct_arg(

cpp2rust/converter/models/converter_refcount.cpp

@@ -824,7 +824,7 @@ static std::vector<const char *> printf2fmt(std::string &format) {
         }
       }
     }
-    llvm::errs() << "Unknown printf format: " << format << "\n";
+    llvm::errs() << "Unknown printf format: " << format << '\n';
     assert(0);
   }
   return types;
@@ -840,7 +840,7 @@ void ConverterRefCount::ConvertPrintf(clang::CallExpr *expr) {
   } else {
     llvm::errs() << "Uknown fprintf format: ";
     expr->getArg(1)->dump();
-    llvm::errs() << "\n";
+    llvm::errs() << '\n';
     exit(1);
   }
   bool ends_newline = format.ends_with("\\n\"");
@@ -851,7 +851,7 @@ void ConverterRefCount::ConvertPrintf(clang::CallExpr *expr) {
   } else if (fd == "stderr" || fd == "__stderrp") {
     StrCat(ends_newline ? "eprintln!(" : "eprint!(");
   } else {
-    llvm::errs() << "Uknown fprintf fd: " << fd << "\n";
+    llvm::errs() << "Uknown fprintf fd: " << fd << '\n';
     exit(1);
   }
   if (ends_newline) {

cpp2rust/converter/models/converter_refcount.h

@@ -249,7 +249,7 @@ class ConverterRefCount final : public Converter {
       for (auto ck : c.conversion_kind_) {
         log() << c.ConversionKindToString(ck) << ", ";
       }
-      log() << "\n";
+      log() << '\n';
     }
     ~PushConversionKind() {
       if (pushed) {
@@ -259,7 +259,7 @@ class ConverterRefCount final : public Converter {
       for (auto ck : c.conversion_kind_) {
         log() << c.ConversionKindToString(ck) << ", ";
       }
-      log() << "\n";
+      log() << '\n';
     }
   };
 

cpp2rust/cpp2rust.cpp

@@ -128,15 +128,15 @@ int main(int argc, char *argv[]) {
   } else if (Model == "unsafe") {
     model = cpp2rust::Model::kUnsafe;
   } else {
-    llvm::errs() << "ERROR: unknown model: " << Model << "\n";
+    llvm::errs() << "ERROR: unknown model: " << Model << '\n';
     return EXIT_FAILURE;
   }
 
   std::string cc_code;
   if (!CcFile.empty()) {
     std::ifstream file(CcFile);
     if (!file) {
-      llvm::errs() << "ERROR: failed to open " << CcFile << "\n";
+      llvm::errs() << "ERROR: failed to open " << CcFile << '\n';
       return EXIT_FAILURE;
     }
     cc_code = {std::istreambuf_iterator<char>(file),
@@ -167,7 +167,7 @@ int main(int argc, char *argv[]) {
 
   std::ofstream file(RsFile);
   if (!file) {
-    llvm::errs() << "ERROR: failed to open " << RsFile << "\n";
+    llvm::errs() << "ERROR: failed to open " << RsFile << '\n';
     return EXIT_FAILURE;
   }