clang/tools/diagtool/DiagTool.cpp

   1 //===- DiagTool.cpp - Classes for defining diagtool tools -------------------===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8 //
   9 // This file implements the boilerplate for defining diagtool tools.
  10 //
  11 //===----------------------------------------------------------------------===//
  12
  13 #include "DiagTool.h"
  14 #include "llvm/ADT/StringMap.h"
  15 #include "llvm/ADT/STLExtras.h"
  16 #include <vector>
  17
  18 using namespace diagtool;
  19
  20 DiagTool::DiagTool(llvm::StringRef toolCmd, llvm::StringRef toolDesc)
  21     : cmd(std::string(toolCmd)), description(std::string(toolDesc)) {}
  22
  23 DiagTool::~DiagTool() {}
  24
  25 typedef llvm::StringMap<DiagTool *> ToolMap;
  26 static inline ToolMap *getTools(void *v) { return static_cast<ToolMap*>(v); }
  27
  28 DiagTools::DiagTools() : tools(new ToolMap()) {}
  29 DiagTools::~DiagTools() { delete getTools(tools); }
  30
  31 DiagTool *DiagTools::getTool(llvm::StringRef toolCmd) {
  32   ToolMap::iterator it = getTools(tools)->find(toolCmd);
  33   return (it == getTools(tools)->end()) ? nullptr : it->getValue();
  34 }
  35
  36 void DiagTools::registerTool(DiagTool *tool) {
  37   (*getTools(tools))[tool->getName()] = tool;
  38 }
  39
  40 void DiagTools::printCommands(llvm::raw_ostream &out) {
  41   std::vector<llvm::StringRef> toolNames;
  42   unsigned maxName = 0;
  43   for (ToolMap::iterator it = getTools(tools)->begin(),
  44        ei = getTools(tools)->end(); it != ei; ++it) {
  45     toolNames.push_back(it->getKey());
  46     unsigned len = it->getKey().size();
  47     if (len > maxName)
  48       maxName = len;
  49   }
  50   llvm::sort(toolNames);
  51
  52   for (std::vector<llvm::StringRef>::iterator it = toolNames.begin(),
  53        ei = toolNames.end(); it != ei; ++it) {
  54
  55     out << "  " << (*it);
  56     unsigned spaces = (maxName + 3) - (it->size());
  57     for (unsigned i = 0; i < spaces; ++i)
  58       out << ' ';
  59
  60     out << getTool(*it)->getDescription() << '\n';
  61   }
  62 }
  63
  64 namespace diagtool {
  65   llvm::ManagedStatic<DiagTools> diagTools;
  66 }