CIndexCodeCompletion.cpp revision cee235cdf0b8047761ffac598c4c3a32ab7411a2 
1//===- CIndexCodeCompletion.cpp - Code Completion API hooks ---------------===//
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// This file implements the Clang-C Source Indexing library hooks for
11// code completion.
12//
13//===----------------------------------------------------------------------===//
14
15#include "CIndexer.h"
16#include "CIndexDiagnostic.h"
17#include "clang/Basic/SourceManager.h"
18#include "clang/Basic/FileManager.h"
19#include "clang/Frontend/ASTUnit.h"
20#include "clang/Frontend/CompilerInstance.h"
21#include "clang/Frontend/FrontendDiagnostic.h"
22#include "clang/Sema/CodeCompleteConsumer.h"
23#include "llvm/ADT/StringExtras.h"
24#include "llvm/Support/MemoryBuffer.h"
25#include "llvm/System/Program.h"
26#include <cstdlib>
27#include <cstdio>
28
29#ifdef UDP_CODE_COMPLETION_LOGGER
30#include "clang/Basic/Version.h"
31#include "llvm/ADT/SmallString.h"
32#include "llvm/Support/Timer.h"
33#include "llvm/Support/raw_ostream.h"
34#include <arpa/inet.h>
35#include <sys/socket.h>
36#include <sys/types.h>
37#include <unistd.h>
38#endif
39
40using namespace clang;
41using namespace clang::cxstring;
42
43namespace {
44  /// \brief Stored representation of a completion string.
45  ///
46  /// This is the representation behind a CXCompletionString.
47  class CXStoredCodeCompletionString : public CodeCompletionString {
48    unsigned Priority;
49
50  public:
51    CXStoredCodeCompletionString(unsigned Priority) : Priority(Priority) { }
52
53    unsigned getPriority() const { return Priority; }
54  };
55}
56
57extern "C" {
58
59enum CXCompletionChunkKind
60clang_getCompletionChunkKind(CXCompletionString completion_string,
61                             unsigned chunk_number) {
62  CXStoredCodeCompletionString *CCStr
63    = (CXStoredCodeCompletionString *)completion_string;
64  if (!CCStr || chunk_number >= CCStr->size())
65    return CXCompletionChunk_Text;
66
67  switch ((*CCStr)[chunk_number].Kind) {
68  case CodeCompletionString::CK_TypedText:
69    return CXCompletionChunk_TypedText;
70  case CodeCompletionString::CK_Text:
71    return CXCompletionChunk_Text;
72  case CodeCompletionString::CK_Optional:
73    return CXCompletionChunk_Optional;
74  case CodeCompletionString::CK_Placeholder:
75    return CXCompletionChunk_Placeholder;
76  case CodeCompletionString::CK_Informative:
77    return CXCompletionChunk_Informative;
78  case CodeCompletionString::CK_ResultType:
79    return CXCompletionChunk_ResultType;
80  case CodeCompletionString::CK_CurrentParameter:
81    return CXCompletionChunk_CurrentParameter;
82  case CodeCompletionString::CK_LeftParen:
83    return CXCompletionChunk_LeftParen;
84  case CodeCompletionString::CK_RightParen:
85    return CXCompletionChunk_RightParen;
86  case CodeCompletionString::CK_LeftBracket:
87    return CXCompletionChunk_LeftBracket;
88  case CodeCompletionString::CK_RightBracket:
89    return CXCompletionChunk_RightBracket;
90  case CodeCompletionString::CK_LeftBrace:
91    return CXCompletionChunk_LeftBrace;
92  case CodeCompletionString::CK_RightBrace:
93    return CXCompletionChunk_RightBrace;
94  case CodeCompletionString::CK_LeftAngle:
95    return CXCompletionChunk_LeftAngle;
96  case CodeCompletionString::CK_RightAngle:
97    return CXCompletionChunk_RightAngle;
98  case CodeCompletionString::CK_Comma:
99    return CXCompletionChunk_Comma;
100  case CodeCompletionString::CK_Colon:
101    return CXCompletionChunk_Colon;
102  case CodeCompletionString::CK_SemiColon:
103    return CXCompletionChunk_SemiColon;
104  case CodeCompletionString::CK_Equal:
105    return CXCompletionChunk_Equal;
106  case CodeCompletionString::CK_HorizontalSpace:
107    return CXCompletionChunk_HorizontalSpace;
108  case CodeCompletionString::CK_VerticalSpace:
109    return CXCompletionChunk_VerticalSpace;
110  }
111
112  // Should be unreachable, but let's be careful.
113  return CXCompletionChunk_Text;
114}
115
116CXString clang_getCompletionChunkText(CXCompletionString completion_string,
117                                      unsigned chunk_number) {
118  CXStoredCodeCompletionString *CCStr
119    = (CXStoredCodeCompletionString *)completion_string;
120  if (!CCStr || chunk_number >= CCStr->size())
121    return createCXString(0);
122
123  switch ((*CCStr)[chunk_number].Kind) {
124  case CodeCompletionString::CK_TypedText:
125  case CodeCompletionString::CK_Text:
126  case CodeCompletionString::CK_Placeholder:
127  case CodeCompletionString::CK_CurrentParameter:
128  case CodeCompletionString::CK_Informative:
129  case CodeCompletionString::CK_LeftParen:
130  case CodeCompletionString::CK_RightParen:
131  case CodeCompletionString::CK_LeftBracket:
132  case CodeCompletionString::CK_RightBracket:
133  case CodeCompletionString::CK_LeftBrace:
134  case CodeCompletionString::CK_RightBrace:
135  case CodeCompletionString::CK_LeftAngle:
136  case CodeCompletionString::CK_RightAngle:
137  case CodeCompletionString::CK_Comma:
138  case CodeCompletionString::CK_ResultType:
139  case CodeCompletionString::CK_Colon:
140  case CodeCompletionString::CK_SemiColon:
141  case CodeCompletionString::CK_Equal:
142  case CodeCompletionString::CK_HorizontalSpace:
143    return createCXString((*CCStr)[chunk_number].Text, false);
144
145  case CodeCompletionString::CK_VerticalSpace:
146    // FIXME: Temporary hack until we figure out how to handle vertical space.
147    return createCXString(" ");
148
149  case CodeCompletionString::CK_Optional:
150    // Note: treated as an empty text block.
151    return createCXString("");
152  }
153
154  // Should be unreachable, but let's be careful.
155  return createCXString(0);
156}
157
158
159CXCompletionString
160clang_getCompletionChunkCompletionString(CXCompletionString completion_string,
161                                         unsigned chunk_number) {
162  CXStoredCodeCompletionString *CCStr
163    = (CXStoredCodeCompletionString *)completion_string;
164  if (!CCStr || chunk_number >= CCStr->size())
165    return 0;
166
167  switch ((*CCStr)[chunk_number].Kind) {
168  case CodeCompletionString::CK_TypedText:
169  case CodeCompletionString::CK_Text:
170  case CodeCompletionString::CK_Placeholder:
171  case CodeCompletionString::CK_CurrentParameter:
172  case CodeCompletionString::CK_Informative:
173  case CodeCompletionString::CK_LeftParen:
174  case CodeCompletionString::CK_RightParen:
175  case CodeCompletionString::CK_LeftBracket:
176  case CodeCompletionString::CK_RightBracket:
177  case CodeCompletionString::CK_LeftBrace:
178  case CodeCompletionString::CK_RightBrace:
179  case CodeCompletionString::CK_LeftAngle:
180  case CodeCompletionString::CK_RightAngle:
181  case CodeCompletionString::CK_Comma:
182  case CodeCompletionString::CK_ResultType:
183  case CodeCompletionString::CK_Colon:
184  case CodeCompletionString::CK_SemiColon:
185  case CodeCompletionString::CK_Equal:
186  case CodeCompletionString::CK_HorizontalSpace:
187  case CodeCompletionString::CK_VerticalSpace:
188    return 0;
189
190  case CodeCompletionString::CK_Optional:
191    // Note: treated as an empty text block.
192    return (*CCStr)[chunk_number].Optional;
193  }
194
195  // Should be unreachable, but let's be careful.
196  return 0;
197}
198
199unsigned clang_getNumCompletionChunks(CXCompletionString completion_string) {
200  CXStoredCodeCompletionString *CCStr
201    = (CXStoredCodeCompletionString *)completion_string;
202  return CCStr? CCStr->size() : 0;
203}
204
205unsigned clang_getCompletionPriority(CXCompletionString completion_string) {
206  CXStoredCodeCompletionString *CCStr
207    = (CXStoredCodeCompletionString *)completion_string;
208  return CCStr? CCStr->getPriority() : unsigned(CCP_Unlikely);
209}
210
211static bool ReadUnsigned(const char *&Memory, const char *MemoryEnd,
212                         unsigned &Value) {
213  if (Memory + sizeof(unsigned) > MemoryEnd)
214    return true;
215
216  memmove(&Value, Memory, sizeof(unsigned));
217  Memory += sizeof(unsigned);
218  return false;
219}
220
221/// \brief The CXCodeCompleteResults structure we allocate internally;
222/// the client only sees the initial CXCodeCompleteResults structure.
223struct AllocatedCXCodeCompleteResults : public CXCodeCompleteResults {
224  AllocatedCXCodeCompleteResults();
225  ~AllocatedCXCodeCompleteResults();
226
227  /// \brief Diagnostics produced while performing code completion.
228  llvm::SmallVector<StoredDiagnostic, 8> Diagnostics;
229
230  /// \brief Diag object
231  llvm::IntrusiveRefCntPtr<Diagnostic> Diag;
232
233  /// \brief Language options used to adjust source locations.
234  LangOptions LangOpts;
235
236  /// \brief Source manager, used for diagnostics.
237  SourceManager SourceMgr;
238
239  /// \brief File manager, used for diagnostics.
240  FileManager FileMgr;
241
242  /// \brief Temporary files that should be removed once we have finished
243  /// with the code-completion results.
244  std::vector<llvm::sys::Path> TemporaryFiles;
245
246  /// \brief Temporary buffers that will be deleted once we have finished with the code-completion results.
247  llvm::SmallVector<const llvm::MemoryBuffer *, 1> TemporaryBuffers;
248};
249
250AllocatedCXCodeCompleteResults::AllocatedCXCodeCompleteResults()
251  : CXCodeCompleteResults(), Diag(new Diagnostic), SourceMgr(*Diag) { }
252
253AllocatedCXCodeCompleteResults::~AllocatedCXCodeCompleteResults() {
254  for (unsigned I = 0, N = NumResults; I != N; ++I)
255    delete (CXStoredCodeCompletionString *)Results[I].CompletionString;
256  delete [] Results;
257
258  for (unsigned I = 0, N = TemporaryFiles.size(); I != N; ++I)
259    TemporaryFiles[I].eraseFromDisk();
260  for (unsigned I = 0, N = TemporaryBuffers.size(); I != N; ++I)
261    delete TemporaryBuffers[I];
262}
263
264CXCodeCompleteResults *clang_codeComplete(CXIndex CIdx,
265                                          const char *source_filename,
266                                          int num_command_line_args,
267                                          const char **command_line_args,
268                                          unsigned num_unsaved_files,
269                                          struct CXUnsavedFile *unsaved_files,
270                                          const char *complete_filename,
271                                          unsigned complete_line,
272                                          unsigned complete_column) {
273#ifdef UDP_CODE_COMPLETION_LOGGER
274#ifdef UDP_CODE_COMPLETION_LOGGER_PORT
275  const llvm::TimeRecord &StartTime =  llvm::TimeRecord::getCurrentTime();
276#endif
277#endif
278
279  bool EnableLogging = getenv("LIBCLANG_CODE_COMPLETION_LOGGING") != 0;
280
281  // The indexer, which is mainly used to determine where diagnostics go.
282  CIndexer *CXXIdx = static_cast<CIndexer *>(CIdx);
283
284  // Configure the diagnostics.
285  DiagnosticOptions DiagOpts;
286  llvm::IntrusiveRefCntPtr<Diagnostic> Diags;
287  Diags = CompilerInstance::createDiagnostics(DiagOpts, 0, 0);
288
289  // The set of temporary files that we've built.
290  std::vector<llvm::sys::Path> TemporaryFiles;
291
292  // Build up the arguments for invoking 'clang'.
293  std::vector<const char *> argv;
294
295  // First add the complete path to the 'clang' executable.
296  llvm::sys::Path ClangPath = CXXIdx->getClangPath();
297  argv.push_back(ClangPath.c_str());
298
299  // Always use Clang C++ support.
300  argv.push_back("-ccc-clang-cxx");
301
302  // Add the '-fsyntax-only' argument so that we only perform a basic
303  // syntax check of the code.
304  argv.push_back("-fsyntax-only");
305
306  // Add the appropriate '-code-completion-at=file:line:column' argument
307  // to perform code completion, with an "-Xclang" preceding it.
308  std::string code_complete_at;
309  code_complete_at += complete_filename;
310  code_complete_at += ":";
311  code_complete_at += llvm::utostr(complete_line);
312  code_complete_at += ":";
313  code_complete_at += llvm::utostr(complete_column);
314  argv.push_back("-Xclang");
315  argv.push_back("-code-completion-at");
316  argv.push_back("-Xclang");
317  argv.push_back(code_complete_at.c_str());
318  argv.push_back("-Xclang");
319  argv.push_back("-no-code-completion-debug-printer");
320  argv.push_back("-Xclang");
321  argv.push_back("-code-completion-macros");
322  argv.push_back("-fdiagnostics-binary");
323
324  // Remap any unsaved files to temporary files.
325  std::vector<std::string> RemapArgs;
326  if (RemapFiles(num_unsaved_files, unsaved_files, RemapArgs, TemporaryFiles))
327    return 0;
328
329  // The pointers into the elements of RemapArgs are stable because we
330  // won't be adding anything to RemapArgs after this point.
331  for (unsigned i = 0, e = RemapArgs.size(); i != e; ++i)
332    argv.push_back(RemapArgs[i].c_str());
333
334  // Add the source file name (FIXME: later, we'll want to build temporary
335  // file from the buffer, or just feed the source text via standard input).
336  if (source_filename)
337    argv.push_back(source_filename);
338
339  // Process the compiler options, stripping off '-o', '-c', '-fsyntax-only'.
340  for (int i = 0; i < num_command_line_args; ++i)
341    if (const char *arg = command_line_args[i]) {
342      if (strcmp(arg, "-o") == 0) {
343        ++i; // Also skip the matching argument.
344        continue;
345      }
346      if (strcmp(arg, "-emit-ast") == 0 ||
347          strcmp(arg, "-c") == 0 ||
348          strcmp(arg, "-fsyntax-only") == 0) {
349        continue;
350      }
351
352      // Keep the argument.
353      argv.push_back(arg);
354    }
355
356  if (EnableLogging) {
357    std::string Log = ClangPath.str();
358    for (unsigned I = 0, N = argv.size(); I != N; ++I) {
359      Log += ' ';
360      Log += argv[I];
361    }
362    fprintf(stderr, "libclang (Code Completion): %s\n", Log.c_str());
363  }
364
365  // Add the null terminator.
366  argv.push_back(NULL);
367
368  // Generate a temporary name for the code-completion results file.
369  char tmpFile[L_tmpnam];
370  char *tmpFileName = tmpnam(tmpFile);
371  llvm::sys::Path ResultsFile(tmpFileName);
372  TemporaryFiles.push_back(ResultsFile);
373
374  // Generate a temporary name for the diagnostics file.
375  char tmpFileResults[L_tmpnam];
376  char *tmpResultsFileName = tmpnam(tmpFileResults);
377  llvm::sys::Path DiagnosticsFile(tmpResultsFileName);
378  TemporaryFiles.push_back(DiagnosticsFile);
379
380
381
382  // Invoke 'clang'.
383  llvm::sys::Path DevNull; // leave empty, causes redirection to /dev/null
384                           // on Unix or NUL (Windows).
385  std::string ErrMsg;
386  const llvm::sys::Path *Redirects[] = { &DevNull, &ResultsFile,
387                                         &DiagnosticsFile, 0 };
388  llvm::sys::Program::ExecuteAndWait(ClangPath, &argv[0], /* env */ NULL,
389                                     /* redirects */ &Redirects[0],
390                                     /* secondsToWait */ 0,
391                                     /* memoryLimits */ 0, &ErrMsg);
392
393  if (!ErrMsg.empty()) {
394    std::string AllArgs;
395    for (std::vector<const char*>::iterator I = argv.begin(), E = argv.end();
396         I != E; ++I) {
397      AllArgs += ' ';
398      if (*I)
399        AllArgs += *I;
400    }
401
402    Diags->Report(diag::err_fe_invoking) << AllArgs << ErrMsg;
403  }
404
405  // Parse the resulting source file to find code-completion results.
406  using llvm::MemoryBuffer;
407  using llvm::StringRef;
408  AllocatedCXCodeCompleteResults *Results = new AllocatedCXCodeCompleteResults;
409  Results->Results = 0;
410  Results->NumResults = 0;
411  // FIXME: Set Results->LangOpts!
412  if (MemoryBuffer *F = MemoryBuffer::getFile(ResultsFile.c_str())) {
413    llvm::SmallVector<CXCompletionResult, 4> CompletionResults;
414    StringRef Buffer = F->getBuffer();
415    for (const char *Str = Buffer.data(), *StrEnd = Str + Buffer.size();
416         Str < StrEnd;) {
417      unsigned KindValue;
418      if (ReadUnsigned(Str, StrEnd, KindValue))
419        break;
420
421      unsigned Priority;
422      if (ReadUnsigned(Str, StrEnd, Priority))
423        break;
424
425      CXStoredCodeCompletionString *CCStr
426        = new CXStoredCodeCompletionString(Priority);
427      if (!CCStr->Deserialize(Str, StrEnd)) {
428        delete CCStr;
429        continue;
430      }
431
432      if (!CCStr->empty()) {
433        // Vend the code-completion result to the caller.
434        CXCompletionResult Result;
435        Result.CursorKind = (CXCursorKind)KindValue;
436        Result.CompletionString = CCStr;
437        CompletionResults.push_back(Result);
438      }
439    };
440
441    // Allocate the results.
442    Results->Results = new CXCompletionResult [CompletionResults.size()];
443    Results->NumResults = CompletionResults.size();
444    memcpy(Results->Results, CompletionResults.data(),
445           CompletionResults.size() * sizeof(CXCompletionResult));
446    Results->TemporaryBuffers.push_back(F);
447  }
448
449  LoadSerializedDiagnostics(DiagnosticsFile, num_unsaved_files, unsaved_files,
450                            Results->FileMgr, Results->SourceMgr,
451                            Results->Diagnostics);
452
453  // Make sure we delete temporary files when the code-completion results are
454  // destroyed.
455  Results->TemporaryFiles.swap(TemporaryFiles);
456
457#ifdef UDP_CODE_COMPLETION_LOGGER
458#ifdef UDP_CODE_COMPLETION_LOGGER_PORT
459  const llvm::TimeRecord &EndTime =  llvm::TimeRecord::getCurrentTime();
460  llvm::SmallString<256> LogResult;
461  llvm::raw_svector_ostream os(LogResult);
462
463  // Figure out the language and whether or not it uses PCH.
464  const char *lang = 0;
465  bool usesPCH = false;
466
467  for (std::vector<const char*>::iterator I = argv.begin(), E = argv.end();
468       I != E; ++I) {
469    if (*I == 0)
470      continue;
471    if (strcmp(*I, "-x") == 0) {
472      if (I + 1 != E) {
473        lang = *(++I);
474        continue;
475      }
476    }
477    else if (strcmp(*I, "-include") == 0) {
478      if (I+1 != E) {
479        const char *arg = *(++I);
480        llvm::SmallString<512> pchName;
481        {
482          llvm::raw_svector_ostream os(pchName);
483          os << arg << ".pth";
484        }
485        pchName.push_back('\0');
486        struct stat stat_results;
487        if (stat(pchName.data(), &stat_results) == 0)
488          usesPCH = true;
489        continue;
490      }
491    }
492  }
493
494  os << "{ ";
495  os << "\"wall\": " << (EndTime.getWallTime() - StartTime.getWallTime());
496  os << ", \"numRes\": " << Results->NumResults;
497  os << ", \"diags\": " << Results->Diagnostics.size();
498  os << ", \"pch\": " << (usesPCH ? "true" : "false");
499  os << ", \"lang\": \"" << (lang ? lang : "<unknown>") << '"';
500  const char *name = getlogin();
501  os << ", \"user\": \"" << (name ? name : "unknown") << '"';
502  os << ", \"clangVer\": \"" << getClangFullVersion() << '"';
503  os << " }";
504
505  llvm::StringRef res = os.str();
506  if (res.size() > 0) {
507    do {
508      // Setup the UDP socket.
509      struct sockaddr_in servaddr;
510      bzero(&servaddr, sizeof(servaddr));
511      servaddr.sin_family = AF_INET;
512      servaddr.sin_port = htons(UDP_CODE_COMPLETION_LOGGER_PORT);
513      if (inet_pton(AF_INET, UDP_CODE_COMPLETION_LOGGER,
514                    &servaddr.sin_addr) <= 0)
515        break;
516
517      int sockfd = socket(AF_INET, SOCK_DGRAM, 0);
518      if (sockfd < 0)
519        break;
520
521      sendto(sockfd, res.data(), res.size(), 0,
522             (struct sockaddr *)&servaddr, sizeof(servaddr));
523      close(sockfd);
524    }
525    while (false);
526  }
527#endif
528#endif
529  return Results;
530}
531
532} // end extern "C"
533
534namespace clang {
535  // FIXME: defined in CodeCompleteConsumer.cpp, but should be a
536  // static function here.
537  CXCursorKind
538  getCursorKindForCompletionResult(const CodeCompleteConsumer::Result &R);
539}
540
541
542namespace {
543  class CaptureCompletionResults : public CodeCompleteConsumer {
544    AllocatedCXCodeCompleteResults &AllocatedResults;
545
546  public:
547    explicit CaptureCompletionResults(AllocatedCXCodeCompleteResults &Results)
548      : CodeCompleteConsumer(true, false, false), AllocatedResults(Results) { }
549
550    virtual void ProcessCodeCompleteResults(Sema &S, Result *Results,
551                                            unsigned NumResults) {
552      AllocatedResults.Results = new CXCompletionResult [NumResults];
553      AllocatedResults.NumResults = NumResults;
554      for (unsigned I = 0; I != NumResults; ++I) {
555        CXStoredCodeCompletionString *StoredCompletion
556          = new CXStoredCodeCompletionString(Results[I].Priority);
557        (void)Results[I].CreateCodeCompletionString(S, StoredCompletion);
558        AllocatedResults.Results[I].CursorKind
559          = getCursorKindForCompletionResult(Results[I]);
560        AllocatedResults.Results[I].CompletionString = StoredCompletion;
561      }
562    }
563  };
564}
565
566extern "C" {
567CXCodeCompleteResults *clang_codeCompleteAt(CXTranslationUnit TU,
568                                            const char *complete_filename,
569                                            unsigned complete_line,
570                                            unsigned complete_column,
571                                            struct CXUnsavedFile *unsaved_files,
572                                            unsigned num_unsaved_files,
573                                            unsigned options) {
574#ifdef UDP_CODE_COMPLETION_LOGGER
575#ifdef UDP_CODE_COMPLETION_LOGGER_PORT
576  const llvm::TimeRecord &StartTime =  llvm::TimeRecord::getCurrentTime();
577#endif
578#endif
579
580  bool EnableLogging = getenv("LIBCLANG_CODE_COMPLETION_LOGGING") != 0;
581
582  ASTUnit *AST = static_cast<ASTUnit *>(TU);
583  if (!AST)
584    return 0;
585
586  // Perform the remapping of source files.
587  llvm::SmallVector<ASTUnit::RemappedFile, 4> RemappedFiles;
588  for (unsigned I = 0; I != num_unsaved_files; ++I) {
589    llvm::StringRef Data(unsaved_files[I].Contents, unsaved_files[I].Length);
590    const llvm::MemoryBuffer *Buffer
591      = llvm::MemoryBuffer::getMemBufferCopy(Data, unsaved_files[I].Filename);
592    RemappedFiles.push_back(std::make_pair(unsaved_files[I].Filename,
593                                           Buffer));
594  }
595
596  if (EnableLogging) {
597    // FIXME: Add logging.
598  }
599
600  // Parse the resulting source file to find code-completion results.
601  AllocatedCXCodeCompleteResults *Results = new AllocatedCXCodeCompleteResults;
602  Results->Results = 0;
603  Results->NumResults = 0;
604
605  // Create a code-completion consumer to capture the results.
606  CaptureCompletionResults Capture(*Results);
607
608  // Make sure that we free the temporary buffers when the
609  // code-completion constructor is freed.
610  for (unsigned I = 0, N = RemappedFiles.size(); I != N; ++I)
611    Results->TemporaryBuffers.push_back(RemappedFiles[I].second);
612
613  // Perform completion.
614  AST->CodeComplete(complete_filename, complete_line, complete_column,
615                    RemappedFiles.data(), RemappedFiles.size(),
616                    (options & CXCodeComplete_IncludeMacros),
617                    (options & CXCodeComplete_IncludeCodePatterns),
618                    Capture,
619                    *Results->Diag, Results->LangOpts, Results->SourceMgr,
620                    Results->FileMgr, Results->Diagnostics);
621
622
623
624#ifdef UDP_CODE_COMPLETION_LOGGER
625#ifdef UDP_CODE_COMPLETION_LOGGER_PORT
626  const llvm::TimeRecord &EndTime =  llvm::TimeRecord::getCurrentTime();
627  llvm::SmallString<256> LogResult;
628  llvm::raw_svector_ostream os(LogResult);
629
630  // Figure out the language and whether or not it uses PCH.
631  const char *lang = 0;
632  bool usesPCH = false;
633
634  for (std::vector<const char*>::iterator I = argv.begin(), E = argv.end();
635       I != E; ++I) {
636    if (*I == 0)
637      continue;
638    if (strcmp(*I, "-x") == 0) {
639      if (I + 1 != E) {
640        lang = *(++I);
641        continue;
642      }
643    }
644    else if (strcmp(*I, "-include") == 0) {
645      if (I+1 != E) {
646        const char *arg = *(++I);
647        llvm::SmallString<512> pchName;
648        {
649          llvm::raw_svector_ostream os(pchName);
650          os << arg << ".pth";
651        }
652        pchName.push_back('\0');
653        struct stat stat_results;
654        if (stat(pchName.data(), &stat_results) == 0)
655          usesPCH = true;
656        continue;
657      }
658    }
659  }
660
661  os << "{ ";
662  os << "\"wall\": " << (EndTime.getWallTime() - StartTime.getWallTime());
663  os << ", \"numRes\": " << Results->NumResults;
664  os << ", \"diags\": " << Results->Diagnostics.size();
665  os << ", \"pch\": " << (usesPCH ? "true" : "false");
666  os << ", \"lang\": \"" << (lang ? lang : "<unknown>") << '"';
667  const char *name = getlogin();
668  os << ", \"user\": \"" << (name ? name : "unknown") << '"';
669  os << ", \"clangVer\": \"" << getClangFullVersion() << '"';
670  os << " }";
671
672  llvm::StringRef res = os.str();
673  if (res.size() > 0) {
674    do {
675      // Setup the UDP socket.
676      struct sockaddr_in servaddr;
677      bzero(&servaddr, sizeof(servaddr));
678      servaddr.sin_family = AF_INET;
679      servaddr.sin_port = htons(UDP_CODE_COMPLETION_LOGGER_PORT);
680      if (inet_pton(AF_INET, UDP_CODE_COMPLETION_LOGGER,
681                    &servaddr.sin_addr) <= 0)
682        break;
683
684      int sockfd = socket(AF_INET, SOCK_DGRAM, 0);
685      if (sockfd < 0)
686        break;
687
688      sendto(sockfd, res.data(), res.size(), 0,
689             (struct sockaddr *)&servaddr, sizeof(servaddr));
690      close(sockfd);
691    }
692    while (false);
693  }
694#endif
695#endif
696  return Results;
697}
698
699unsigned clang_defaultCodeCompleteOptions(void) {
700  return CXCodeComplete_IncludeMacros;
701}
702
703void clang_disposeCodeCompleteResults(CXCodeCompleteResults *ResultsIn) {
704  if (!ResultsIn)
705    return;
706
707  AllocatedCXCodeCompleteResults *Results
708    = static_cast<AllocatedCXCodeCompleteResults*>(ResultsIn);
709  delete Results;
710}
711
712unsigned
713clang_codeCompleteGetNumDiagnostics(CXCodeCompleteResults *ResultsIn) {
714  AllocatedCXCodeCompleteResults *Results
715    = static_cast<AllocatedCXCodeCompleteResults*>(ResultsIn);
716  if (!Results)
717    return 0;
718
719  return Results->Diagnostics.size();
720}
721
722CXDiagnostic
723clang_codeCompleteGetDiagnostic(CXCodeCompleteResults *ResultsIn,
724                                unsigned Index) {
725  AllocatedCXCodeCompleteResults *Results
726    = static_cast<AllocatedCXCodeCompleteResults*>(ResultsIn);
727  if (!Results || Index >= Results->Diagnostics.size())
728    return 0;
729
730  return new CXStoredDiagnostic(Results->Diagnostics[Index], Results->LangOpts);
731}
732
733
734} // end extern "C"
735