91 lines
2.8 KiB
C++
91 lines
2.8 KiB
C++
//===--- port.h - OS/cpu specific stuff for include-what-you-use ----------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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// Source file for architecture-specific logic.
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#ifndef INCLUDE_WHAT_YOU_USE_PORT_H_
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#define INCLUDE_WHAT_YOU_USE_PORT_H_
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#include <stdlib.h> // for abort
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#include <iostream>
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#include "llvm/Support/Compiler.h"
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// Count of statically allocated array.
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#define IWYU_ARRAYSIZE(arr) sizeof(arr) / sizeof(*arr)
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namespace include_what_you_use {
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// Helper class that allows programmers to log extra information in CHECK_s.
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class FatalMessageEmitter {
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public:
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FatalMessageEmitter(const char* file, int line, const char* message) {
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stream() << file << ":" << line << ": Assertion failed: " << message;
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}
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LLVM_ATTRIBUTE_NORETURN ~FatalMessageEmitter() {
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stream() << ::std::endl;
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::abort();
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#ifdef LLVM_BUILTIN_UNREACHABLE
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// Windows systems and possibly others don't declare abort() to be noreturn,
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// so use the unreachable builtin to avoid a Clang self-host warning.
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LLVM_BUILTIN_UNREACHABLE;
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#endif
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}
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::std::ostream& stream() { return ::std::cerr; }
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};
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// Helper class that allows an ostream to 'appear' as a void expression.
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class OstreamVoidifier {
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public:
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// This has to be an operator with a precedence lower than << but
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// higher than ?:
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void operator&(::std::ostream&) {}
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};
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} // namespace include_what_you_use
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// Usage: CHECK_(condition) << extra << information;
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// The file, line, condition and extra information will be printed to cerr,
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// then the program will abort.
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#define CHECK_(x) (x) ? (void)0 : \
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::include_what_you_use::OstreamVoidifier() & \
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::include_what_you_use::FatalMessageEmitter( \
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__FILE__, __LINE__, #x).stream()
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// Instead of CHECK_(false && "message") use CHECK_UNREACHABLE_("message").
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#define CHECK_UNREACHABLE_(message) \
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::include_what_you_use::OstreamVoidifier() & \
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::include_what_you_use::FatalMessageEmitter( \
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__FILE__, __LINE__, message).stream()
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#if defined(_WIN32)
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#define snprintf _snprintf
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#define NOMINMAX // Prevent Windows headers from redefining min/max.
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#include "Shlwapi.h" // for PathMatchSpec
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// This undef is necessary to prevent conflicts between llvm
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// and Windows headers.
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// objbase.h has #define interface struct.
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#undef interface
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inline bool GlobMatchesPath(const char *glob, const char *path) {
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return PathMatchSpec(path, glob);
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}
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#else // #if defined(_WIN32)
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#include <fnmatch.h>
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inline bool GlobMatchesPath(const char *glob, const char *path) {
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return fnmatch(glob, path, FNM_PATHNAME) == 0;
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}
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#endif // #if defined(_WIN32)
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#endif // INCLUDE_WHAT_YOU_USE_PORT_H_
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