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95cefc8ba1
This adds a copy of the demangler in libcxxabi.
The code also has no dependencies on anything else in LLVM. To enforce
that I added it as another library. That way a BUILD_SHARED_LIBS will
fail if anyone adds an use of StringRef for example.
The no llvm dependency combined with the fact that this has to build
on linux, OS X and Windows required a few changes to the code. In
particular:
No constexpr.
No alignas
On OS X at least this library has only one global symbol:
__ZN4llvm16itanium_demangleEPKcPcPmPi
My current plan is:
Commit something like this
Change lld to use it
Change lldb to use it as the fallback
Add a few #ifdefs so that exactly the same file can be used in
libcxxabi to export abi::__cxa_demangle.
Once the fast demangler in lldb can handle any names this
implementation can be replaced with it and we will have the one true
demangler.
llvm-svn: 280732
29 lines
905 B
C++
29 lines
905 B
C++
//===--- Demangle.h ---------------------------------------------*- C++ -*-===//
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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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#include <cstddef>
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namespace llvm {
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/// This is a llvm local version of __cxa_demangle. Other than the name and
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/// being in the llvm namespace it is identical.
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///
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/// The mangled_name is demangled into buf and returned. If the buffer is not
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/// large enough, realloc is used to expand it.
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///
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/// The *status will be set to
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/// unknown_error: -4
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/// invalid_args: -3
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/// invalid_mangled_name: -2
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/// memory_alloc_failure: -1
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/// success: 0
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char *itaniumDemangle(const char *mangled_name, char *buf, size_t *n,
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int *status);
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}
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