mirror of
https://github.com/carbon-language/carbon-lang.git
synced 2026-09-25 13:20:12 +01:00
Jon Ross-PerkinsandRichard Smith
7157445f97
Continuing on #3070. I moved ParseTree::Node to just Parse::Node, versus Parse::Tree::Node. Other name changes are just removing "Parse" or "Parser" prefixes. In EnumBase, I'm directly defining operator<< because the ostream.h approach just isn't working, not for either of Parse::State nor Parse::NodeKind. Errors look like: ```toolchain/parser/parser_context.cpp:449:34: error: invalid operands to binary expression ('llvm::raw_ostream' and 'const Carbon::Parse::State') output << "\t" << i << ".\t" << entry.state; ~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ^ ~~~~~~~~~~~ ``` The expected template in `Carbon::` is not in the error list; I only see the: ``` ./common/ostream.h:112:6: note: candidate template ignored: requirement 'std::is_base_of_v<std::ostream, llvm::raw_ostream>' was not satisfied [with S = llvm::raw_ostream, T = Carbon::Parse::State] auto operator<<(S& standard_out, const T& value) -> S& { ^ ``` I'm still prodding at this, but not seeing an obvious fix. --------- Co-authored-by: Richard Smith <richard@metafoo.co.uk>
55 lines
1.6 KiB
C++
55 lines
1.6 KiB
C++
// 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
|
|
|
|
#ifndef CARBON_COMMON_VLOG_INTERNAL_H_
|
|
#define CARBON_COMMON_VLOG_INTERNAL_H_
|
|
|
|
#include "common/ostream.h"
|
|
|
|
namespace Carbon::Internal {
|
|
|
|
// Wraps a stream and exiting for fatal errors. Should only be used by check.h
|
|
// macros.
|
|
class VLoggingStream {
|
|
public:
|
|
// Internal type used in macros to dispatch to the `operator|` overload.
|
|
struct Helper {};
|
|
|
|
explicit VLoggingStream(llvm::raw_ostream* stream)
|
|
// Prefix the buffer with the current bug report message.
|
|
: stream_(stream) {}
|
|
|
|
~VLoggingStream() = default;
|
|
|
|
// If the bool cast occurs, it's because the condition is false. This supports
|
|
// && short-circuiting the creation of ExitingStream.
|
|
explicit operator bool() const { return true; }
|
|
|
|
// Forward output to llvm::errs.
|
|
template <typename T>
|
|
auto operator<<(const T& message) -> VLoggingStream& {
|
|
*stream_ << message;
|
|
return *this;
|
|
}
|
|
|
|
// Low-precedence binary operator overload used in vlog.h macros.
|
|
friend auto operator|(Helper /*helper*/, VLoggingStream& /*stream*/) -> void {
|
|
}
|
|
|
|
private:
|
|
[[noreturn]] auto Done() -> void;
|
|
|
|
llvm::raw_ostream* stream_;
|
|
};
|
|
|
|
} // namespace Carbon::Internal
|
|
|
|
// Raw logging stream. This should be used when building forms of vlog
|
|
// macros.
|
|
#define CARBON_VLOG_INTERNAL_STREAM(stream) \
|
|
Carbon::Internal::VLoggingStream::Helper() | \
|
|
Carbon::Internal::VLoggingStream(stream)
|
|
|
|
#endif // CARBON_COMMON_VLOG_INTERNAL_H_
|