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136d27ab4d
This patch does the same thing as r365595 to other subdirectories, which completes the naming style change for the entire lld directory. With this, the naming style conversion is complete for lld. Differential Revision: https://reviews.llvm.org/D64473 llvm-svn: 365730
104 lines
3.0 KiB
C++
104 lines
3.0 KiB
C++
//===- Strings.cpp -------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "lld/Common/Strings.h"
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#include "lld/Common/ErrorHandler.h"
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#include "lld/Common/LLVM.h"
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#include "llvm/Demangle/Demangle.h"
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#include "llvm/Support/GlobPattern.h"
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#include <algorithm>
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#include <mutex>
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#include <vector>
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using namespace llvm;
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using namespace lld;
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// Returns the demangled C++ symbol name for Name.
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Optional<std::string> lld::demangleItanium(StringRef name) {
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// itaniumDemangle can be used to demangle strings other than symbol
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// names which do not necessarily start with "_Z". Name can be
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// either a C or C++ symbol. Don't call itaniumDemangle if the name
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// does not look like a C++ symbol name to avoid getting unexpected
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// result for a C symbol that happens to match a mangled type name.
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if (!name.startswith("_Z"))
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return None;
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char *buf = itaniumDemangle(name.str().c_str(), nullptr, nullptr, nullptr);
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if (!buf)
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return None;
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std::string s(buf);
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free(buf);
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return s;
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}
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Optional<std::string> lld::demangleMSVC(StringRef name) {
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std::string prefix;
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if (name.consume_front("__imp_"))
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prefix = "__declspec(dllimport) ";
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// Demangle only C++ names.
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if (!name.startswith("?"))
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return None;
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char *buf = microsoftDemangle(name.str().c_str(), nullptr, nullptr, nullptr);
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if (!buf)
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return None;
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std::string s(buf);
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free(buf);
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return prefix + s;
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}
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StringMatcher::StringMatcher(ArrayRef<StringRef> pat) {
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for (StringRef s : pat) {
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Expected<GlobPattern> pat = GlobPattern::create(s);
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if (!pat)
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error(toString(pat.takeError()));
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else
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patterns.push_back(*pat);
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}
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}
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bool StringMatcher::match(StringRef s) const {
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for (const GlobPattern &pat : patterns)
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if (pat.match(s))
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return true;
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return false;
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}
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// Converts a hex string (e.g. "deadbeef") to a vector.
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std::vector<uint8_t> lld::parseHex(StringRef s) {
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std::vector<uint8_t> hex;
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while (!s.empty()) {
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StringRef b = s.substr(0, 2);
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s = s.substr(2);
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uint8_t h;
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if (!to_integer(b, h, 16)) {
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error("not a hexadecimal value: " + b);
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return {};
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}
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hex.push_back(h);
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}
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return hex;
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}
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// Returns true if S is valid as a C language identifier.
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bool lld::isValidCIdentifier(StringRef s) {
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return !s.empty() && (isAlpha(s[0]) || s[0] == '_') &&
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std::all_of(s.begin() + 1, s.end(),
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[](char c) { return c == '_' || isAlnum(c); });
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}
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// Write the contents of the a buffer to a file
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void lld::saveBuffer(StringRef buffer, const Twine &path) {
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std::error_code ec;
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raw_fd_ostream os(path.str(), ec, sys::fs::OpenFlags::F_None);
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if (ec)
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error("cannot create " + path + ": " + ec.message());
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os << buffer;
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}
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