1//===--- CommentCommandTraits.cpp - Comment command properties --*- C++ -*-===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9
10#include "clang/AST/CommentCommandTraits.h"
11#include "llvm/ADT/STLExtras.h"
12
13namespace clang {
14namespace comments {
15
16#include "clang/AST/CommentCommandInfo.inc"
17
18CommandTraits::CommandTraits(llvm::BumpPtrAllocator &Allocator,
19                             const CommentOptions &CommentOptions) :
20    NextID(llvm::array_lengthof(Commands)), Allocator(Allocator) {
21  registerCommentOptions(CommentOptions);
22}
23
24void CommandTraits::registerCommentOptions(
25    const CommentOptions &CommentOptions) {
26  for (CommentOptions::BlockCommandNamesTy::const_iterator
27           I = CommentOptions.BlockCommandNames.begin(),
28           E = CommentOptions.BlockCommandNames.end();
29       I != E; I++) {
30    registerBlockCommand(*I);
31  }
32}
33
34const CommandInfo *CommandTraits::getCommandInfoOrNULL(StringRef Name) const {
35  if (const CommandInfo *Info = getBuiltinCommandInfo(Name))
36    return Info;
37  return getRegisteredCommandInfo(Name);
38}
39
40const CommandInfo *CommandTraits::getCommandInfo(unsigned CommandID) const {
41  if (const CommandInfo *Info = getBuiltinCommandInfo(CommandID))
42    return Info;
43  return getRegisteredCommandInfo(CommandID);
44}
45
46CommandInfo *CommandTraits::createCommandInfoWithName(StringRef CommandName) {
47  char *Name = Allocator.Allocate<char>(CommandName.size() + 1);
48  memcpy(Name, CommandName.data(), CommandName.size());
49  Name[CommandName.size()] = '\0';
50
51  // Value-initialize (=zero-initialize in this case) a new CommandInfo.
52  CommandInfo *Info = new (Allocator) CommandInfo();
53  Info->Name = Name;
54  Info->ID = NextID++;
55
56  RegisteredCommands.push_back(Info);
57
58  return Info;
59}
60
61const CommandInfo *CommandTraits::registerUnknownCommand(
62                                                  StringRef CommandName) {
63  CommandInfo *Info = createCommandInfoWithName(CommandName);
64  Info->IsUnknownCommand = true;
65  return Info;
66}
67
68const CommandInfo *CommandTraits::registerBlockCommand(StringRef CommandName) {
69  CommandInfo *Info = createCommandInfoWithName(CommandName);
70  Info->IsBlockCommand = true;
71  return Info;
72}
73
74const CommandInfo *CommandTraits::getBuiltinCommandInfo(
75                                                  unsigned CommandID) {
76  if (CommandID < llvm::array_lengthof(Commands))
77    return &Commands[CommandID];
78  return NULL;
79}
80
81const CommandInfo *CommandTraits::getRegisteredCommandInfo(
82                                                  StringRef Name) const {
83  for (unsigned i = 0, e = RegisteredCommands.size(); i != e; ++i) {
84    if (RegisteredCommands[i]->Name == Name)
85      return RegisteredCommands[i];
86  }
87  return NULL;
88}
89
90const CommandInfo *CommandTraits::getRegisteredCommandInfo(
91                                                  unsigned CommandID) const {
92  return RegisteredCommands[CommandID - llvm::array_lengthof(Commands)];
93}
94
95} // end namespace comments
96} // end namespace clang
97
98