mirror of
https://github.com/carbon-language/carbon-lang.git
synced 2026-09-25 22:02:28 +01:00
Chandler Carruth
8f8ab23a77
This should clean up our top level directory and the build patterns. No non-mechanical edits here. Just injecting `toolchain/` and `TOOLCHAIN_` and then running formatting tools.
65 lines
2.1 KiB
C++
65 lines
2.1 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
|
|
|
|
#include <cstdint>
|
|
#include <cstring>
|
|
|
|
#include "llvm/ADT/StringRef.h"
|
|
#include "toolchain/diagnostics/diagnostic_emitter.h"
|
|
#include "toolchain/diagnostics/null_diagnostics.h"
|
|
#include "toolchain/lexer/tokenized_buffer.h"
|
|
|
|
namespace Carbon {
|
|
|
|
// NOLINTNEXTLINE: Match the documented fuzzer entry point declaration style.
|
|
extern "C" int LLVMFuzzerTestOneInput(const unsigned char* data,
|
|
std::size_t size) {
|
|
// We need two bytes of data to compute a file name length.
|
|
if (size < 2) {
|
|
return 0;
|
|
}
|
|
uint16_t raw_filename_length;
|
|
std::memcpy(&raw_filename_length, data, 2);
|
|
data += 2;
|
|
size -= 2;
|
|
size_t filename_length = raw_filename_length;
|
|
|
|
// We need enough data to populate this filename length.
|
|
if (size < filename_length) {
|
|
return 0;
|
|
}
|
|
llvm::StringRef filename(reinterpret_cast<const char*>(data),
|
|
filename_length);
|
|
data += filename_length;
|
|
size -= filename_length;
|
|
|
|
// The rest of the data is the source text.
|
|
auto source = SourceBuffer::CreateFromText(
|
|
llvm::StringRef(reinterpret_cast<const char*>(data), size), filename);
|
|
|
|
auto buffer = TokenizedBuffer::Lex(source, NullDiagnosticConsumer());
|
|
if (buffer.HasErrors()) {
|
|
return 0;
|
|
}
|
|
|
|
// Walk the lexed and tokenized buffer to ensure it isn't corrupt in some way.
|
|
//
|
|
// TODO: We should enhance this to do more sanity checks on the resulting
|
|
// token stream.
|
|
for (TokenizedBuffer::Token token : buffer.Tokens()) {
|
|
int line_number = buffer.GetLineNumber(token);
|
|
(void)line_number;
|
|
assert(line_number > 0 && "Invalid line number!");
|
|
assert(line_number < INT_MAX && "Invalid line number!");
|
|
int column_number = buffer.GetColumnNumber(token);
|
|
(void)column_number;
|
|
assert(column_number > 0 && "Invalid line number!");
|
|
assert(column_number < INT_MAX && "Invalid line number!");
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
} // namespace Carbon
|