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//===-- MSVCUndecoratedNameParser.cpp ---------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "MSVCUndecoratedNameParser.h"
#include <stack>
MSVCUndecoratedNameParser::MSVCUndecoratedNameParser(llvm::StringRef name) {
std::size_t last_base_start = 0;
std::stack<std::size_t> stack;
unsigned int open_angle_brackets = 0;
for (size_t i = 0; i < name.size(); i++) {
switch (name[i]) {
case '<':
// Do not treat `operator<' and `operator<<' as templates
// (sometimes they represented as `<' and `<<' in the name).
if (i == last_base_start ||
(i == last_base_start + 1 && name[last_base_start] == '<'))
break;
stack.push(i);
open_angle_brackets++;
break;
case '>':
if (!stack.empty() && name[stack.top()] == '<') {
open_angle_brackets--;
stack.pop();
}
break;
case '`':
stack.push(i);
break;
case '\'':
while (!stack.empty()) {
std::size_t top = stack.top();
if (name[top] == '<')
open_angle_brackets--;
stack.pop();
if (name[top] == '`')
break;
}
break;
case ':':
if (open_angle_brackets)
break;
if (i == 0 || name[i - 1] != ':')
break;
m_specifiers.emplace_back(name.take_front(i - 1),
name.slice(last_base_start, i - 1));
last_base_start = i + 1;
break;
default:
break;
}
}
m_specifiers.emplace_back(name, name.drop_front(last_base_start));
}
bool MSVCUndecoratedNameParser::IsMSVCUndecoratedName(llvm::StringRef name) {
return name.find('`') != llvm::StringRef::npos;
}
bool MSVCUndecoratedNameParser::ExtractContextAndIdentifier(
llvm::StringRef name, llvm::StringRef &context,
llvm::StringRef &identifier) {
MSVCUndecoratedNameParser parser(name);
llvm::ArrayRef<MSVCUndecoratedNameSpecifier> specs = parser.GetSpecifiers();
std::size_t count = specs.size();
identifier = count > 0 ? specs[count - 1].GetBaseName() : "";
context = count > 1 ? specs[count - 2].GetFullName() : "";
return count;
}
llvm::StringRef MSVCUndecoratedNameParser::DropScope(llvm::StringRef name) {
MSVCUndecoratedNameParser parser(name);
llvm::ArrayRef<MSVCUndecoratedNameSpecifier> specs = parser.GetSpecifiers();
if (specs.empty())
return "";
return specs[specs.size() - 1].GetBaseName();
}
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