[LLVM][Support] Add new CreateFileError functions

[AmrDeveloper]

Add new CreateFileError functions to create a StringError with the specified error code and prepend the file path to it

Needed for: #125345

[llvmbot]

@llvm/pr-subscribers-llvm-support

Author: Amr Hesham (AmrDeveloper)

Changes

Add new CreateFileError functions to create a StringError with the specified error code and prepend the file path to it

Needed for: #125345

---

Full diff: https://github.com/llvm/llvm-project/pull/125906.diff

2 Files Affected:

• (modified) llvm/include/llvm/Support/Error.h (+16)
• (modified) llvm/unittests/Support/ErrorTest.cpp (+8)

diff --git a/llvm/include/llvm/Support/Error.h b/llvm/include/llvm/Support/Error.h
index 90120156ec2ead..48e17aabc1afda 100644
--- a/llvm/include/llvm/Support/Error.h
+++ b/llvm/include/llvm/Support/Error.h
@@ -1404,6 +1404,22 @@ inline Error createFileError(const Twine &F, size_t Line, std::error_code EC) {
   return createFileError(F, Line, errorCodeToError(EC));
 }
 
+/// Create a StringError with the specified error code and prepend the file path to it.
+inline Error createFileError(const Twine &F, std::error_code EC,
+                             const Twine &S) {
+  Error E = createStringError(EC, S);
+  return createFileError(F, std::move(E));
+}
+
+
+/// Create a StringError with the specified error code and prepend the file path to it.
+template <typename... Ts>
+inline Error createFileError(const Twine &F, std::error_code EC,
+                             char const *Fmt, const Ts &...Vals) {
+  Error E = createStringError(EC, Fmt, Vals...);
+  return createFileError(F, std::move(E));
+}
+
 Error createFileError(const Twine &F, ErrorSuccess) = delete;
 
 /// Helper for check-and-exit error handling.
diff --git a/llvm/unittests/Support/ErrorTest.cpp b/llvm/unittests/Support/ErrorTest.cpp
index 98d19e8d2a15a3..b84fd621f76d43 100644
--- a/llvm/unittests/Support/ErrorTest.cpp
+++ b/llvm/unittests/Support/ErrorTest.cpp
@@ -976,6 +976,14 @@ TEST(Error, FileErrorTest) {
   handleAllErrors(std::move(FE6), [](std::unique_ptr<FileError> F) {
     EXPECT_EQ(F->messageWithoutFileInfo(), "CustomError {6}");
   });
+
+  Error FE7 = createFileError("file.bin", make_error_code(std::errc::invalid_argument), "invalid argument");
+  EXPECT_EQ(toString(std::move(FE7)), "'file.bin': invalid argument");
+
+  StringRef Argument = "arg";
+  Error FE8 = createFileError("file.bin", make_error_code(std::errc::invalid_argument),
+                              "invalid argument '%s'", Argument.str().c_str());
+  EXPECT_EQ(toString(std::move(FE8)), "'file.bin': invalid argument 'arg'");
 }
 
 TEST(Error, FileErrorErrorCode) {

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