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//===--- Assertions.cpp - Assertion macros --------------------------------===//
//
// This source file is part of the Swift.org open source project
//
// Copyright (c) 2024 Apple Inc. and the Swift project authors
// Licensed under Apache License v2.0 with Runtime Library Exception
//
// See https://swift.org/LICENSE.txt for license information
// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
//
//===----------------------------------------------------------------------===//
//
// This file defines implementation details of include/swift/Basic/Assertions.h.
//
//===----------------------------------------------------------------------===//
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/raw_ostream.h"
#include "swift/Basic/Assertions.h"
#include <iostream>
llvm::cl::opt<bool> AssertContinue(
"assert-continue", llvm::cl::init(false),
llvm::cl::desc("Do not stop on an assertion failure"));
llvm::cl::opt<bool> AssertHelp(
"assert-help", llvm::cl::init(false),
llvm::cl::desc("Print help for managing assertions"));
int CONDITIONAL_ASSERT_Global_enable_flag =
#ifdef NDEBUG
0; // Default to `off` in release builds
#else
1; // Default to `on` in debug builds
#endif
void ASSERT_failure(const char *expr, const char *filename, int line, const char *func) {
// Find the last component of `filename`
// Needed on Windows MSVC, which lacks __FILE_NAME__
// so we have to use __FILE__ instead:
for (const char *p = filename; *p != '\0'; p++) {
if ((p[0] == '/' || p[0] == '\\')
&& p[1] != '/' && p[1] != '\\' && p[1] != '\0') {
filename = p + 1;
}
}
llvm::errs()
<< "Assertion failed: "
<< "(" << expr << "), "
<< "function " << func << " at "
<< filename << ":"
<< line << ".\n";
ASSERT_help();
if (AssertContinue) {
llvm::errs() << "Continuing after failed assertion (-Xllvm -assert-continue)\n";
return;
}
abort();
}
void ASSERT_help() {
static int ASSERT_help_shown = 0;
if (ASSERT_help_shown) {
return;
}
ASSERT_help_shown = 1;
if (!AssertHelp) {
llvm::errs() << "(to display assertion configuration options: -Xllvm -assert-help)\n";
return;
}
llvm::errs() << "\n";
llvm::errs() << "Control assertion behavior with one or more of the following options:\n\n";
llvm::errs() << " -Xllvm -assert-continue\n";
llvm::errs() << " Continue after any failed assertion\n\n";
}
// This has to be callable in the same way as the macro version,
// so we can't put it inside a namespace.
#undef CONDITIONAL_ASSERT_enabled
int CONDITIONAL_ASSERT_enabled() {
return (CONDITIONAL_ASSERT_Global_enable_flag != 0);
}
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