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3708354 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 | //===--- Demangle.h ---------------------------------------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-FileCopyrightText: Part of the LLVM Project
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_DEMANGLE_DEMANGLE_H
#define LLVM_DEMANGLE_DEMANGLE_H
#include <cstddef>
#include <string>
#include <string_view>
namespace llvm {
/// This is a llvm local version of __cxa_demangle. Other than the name and
/// being in the llvm namespace it is identical.
///
/// The mangled_name is demangled into buf and returned. If the buffer is not
/// large enough, realloc is used to expand it.
///
/// The *status will be set to a value from the following enumeration
enum : int {
demangle_unknown_error = -4,
demangle_invalid_args = -3,
demangle_invalid_mangled_name = -2,
demangle_memory_alloc_failure = -1,
demangle_success = 0,
};
/// Returns a non-NULL pointer to a NUL-terminated C style string
/// that should be explicitly freed, if successful. Otherwise, may return
/// nullptr if mangled_name is not a valid mangling or is nullptr.
char *itaniumDemangle(std::string_view mangled_name);
enum MSDemangleFlags {
MSDF_None = 0,
MSDF_DumpBackrefs = 1 << 0,
MSDF_NoAccessSpecifier = 1 << 1,
MSDF_NoCallingConvention = 1 << 2,
MSDF_NoReturnType = 1 << 3,
MSDF_NoMemberType = 1 << 4,
MSDF_NoVariableType = 1 << 5,
};
/// Demangles the Microsoft symbol pointed at by mangled_name and returns it.
/// Returns a pointer to the start of a null-terminated demangled string on
/// success, or nullptr on error.
/// If n_read is non-null and demangling was successful, it receives how many
/// bytes of the input string were consumed.
/// status receives one of the demangle_ enum entries above if it's not nullptr.
/// Flags controls various details of the demangled representation.
char *microsoftDemangle(std::string_view mangled_name, size_t *n_read,
int *status, MSDemangleFlags Flags = MSDF_None);
// Demangles a Rust v0 mangled symbol.
char *rustDemangle(std::string_view MangledName);
// Demangles a D mangled symbol.
char *dlangDemangle(std::string_view MangledName);
/// Attempt to demangle a string using different demangling schemes.
/// The function uses heuristics to determine which demangling scheme to use.
/// \param MangledName - reference to string to demangle.
/// \returns - the demangled string, or a copy of the input string if no
/// demangling occurred.
std::string demangle(std::string_view MangledName);
bool nonMicrosoftDemangle(std::string_view MangledName, std::string &Result);
/// "Partial" demangler. This supports demangling a string into an AST
/// (typically an intermediate stage in itaniumDemangle) and querying certain
/// properties or partially printing the demangled name.
struct ItaniumPartialDemangler {
ItaniumPartialDemangler();
ItaniumPartialDemangler(ItaniumPartialDemangler &&Other);
ItaniumPartialDemangler &operator=(ItaniumPartialDemangler &&Other);
/// Demangle into an AST. Subsequent calls to the rest of the member functions
/// implicitly operate on the AST this produces.
/// \return true on error, false otherwise
bool partialDemangle(const char *MangledName);
/// Just print the entire mangled name into Buf. Buf and N behave like the
/// second and third parameters to __cxa_demangle.
char *finishDemangle(char *Buf, size_t *N) const;
/// Get the base name of a function. This doesn't include trailing template
/// arguments, ie for "a::b<int>" this function returns "b".
char *getFunctionBaseName(char *Buf, size_t *N) const;
/// Get the context name for a function. For "a::b::c", this function returns
/// "a::b".
char *getFunctionDeclContextName(char *Buf, size_t *N) const;
/// Get the entire name of this function.
char *getFunctionName(char *Buf, size_t *N) const;
/// Get the parameters for this function.
char *getFunctionParameters(char *Buf, size_t *N) const;
char *getFunctionReturnType(char *Buf, size_t *N) const;
/// If this function has any any cv or reference qualifiers. These imply that
/// the function is a non-static member function.
bool hasFunctionQualifiers() const;
/// If this symbol describes a constructor or destructor.
bool isCtorOrDtor() const;
/// If this symbol describes a function.
bool isFunction() const;
/// If this symbol describes a variable.
bool isData() const;
/// If this symbol is a <special-name>. These are generally implicitly
/// generated by the implementation, such as vtables and typeinfo names.
bool isSpecialName() const;
~ItaniumPartialDemangler();
private:
void *RootNode;
void *Context;
};
} // namespace llvm
#endif
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