Files
carbon-lang/explorer/base/error_builders_test.cpp
T
Jon Ross-PerkinsandGeoff Romer 4c4c4a4d2c Add RawStringOstream for slightly simpler streaming to strings (#4817)
This adds a RawStringOstream. Versus TestRawOstream, which is
consolidated over to RawStringOstream, it uses a string for storage
instead of a vector, mainly to support move-to-string semantics. Versus
llvm::raw_string_ostream, it owns the string and supports pwrite (which
is needed for driver and its fd_ostream compatibility requirement).

This converts most uses of llvm::raw_string_ostream, leaving behind a
few in InstNamer that explicitly cannot own the string, such as:

```
     llvm::raw_string_ostream(name)
          << "_" << tree.tokens().GetColumnNumber(token);
```

I have this as its own library so that it can use CHECK.

Yes this doesn't save much code, but it's code we repeatedly write.

---------

Co-authored-by: Geoff Romer <gromer@google.com>
2025-01-18 01:11:44 +00:00

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// Part of the Carbon Language project, under the Apache License v2.0 with LLVM
// Exceptions. See /LICENSE for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
#include "explorer/base/error_builders.h"
#include <gtest/gtest.h>
#include "common/raw_string_ostream.h"
#include "explorer/base/source_location.h"
namespace Carbon {
namespace {
TEST(ErrorBuildersTest, ProgramError) {
Error err = ProgramError(SourceLocation("x", 1, FileKind::Main)) << "test";
EXPECT_EQ(err.location(), "x:1");
EXPECT_EQ(err.message(), "test");
RawStringOstream out;
out << err;
EXPECT_EQ(out.TakeStr(), "x:1: test");
}
} // namespace
} // namespace Carbon