contrib/llvm-project/lldb/source/Plugins/ExpressionParser/Clang/ASTDumper.cpp

   1 //===-- ASTDumper.cpp -------------------------------------------*- C++ -*-===//
   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 #include "ASTDumper.h"
  10
  11 #include "lldb/Symbol/ClangASTContext.h"
  12 #include "lldb/Symbol/ClangUtil.h"
  13 #include "lldb/Symbol/CompilerType.h"
  14 #include "lldb/Utility/Log.h"
  15
  16 #include "llvm/Support/raw_ostream.h"
  17
  18 using namespace lldb_private;
  19
  20 ASTDumper::ASTDumper(clang::Decl *decl) {
  21   clang::DeclContext *decl_ctx = llvm::dyn_cast<clang::DeclContext>(decl);
  22
  23   bool has_external_lexical_storage;
  24   bool has_external_visible_storage;
  25
  26   if (decl_ctx) {
  27     has_external_lexical_storage = decl_ctx->hasExternalLexicalStorage();
  28     has_external_visible_storage = decl_ctx->hasExternalVisibleStorage();
  29     decl_ctx->setHasExternalLexicalStorage(false);
  30     decl_ctx->setHasExternalVisibleStorage(false);
  31   }
  32
  33   llvm::raw_string_ostream os(m_dump);
  34   decl->print(os);
  35   os.flush();
  36
  37   if (decl_ctx) {
  38     decl_ctx->setHasExternalLexicalStorage(has_external_lexical_storage);
  39     decl_ctx->setHasExternalVisibleStorage(has_external_visible_storage);
  40   }
  41 }
  42
  43 ASTDumper::ASTDumper(clang::DeclContext *decl_ctx) {
  44   bool has_external_lexical_storage = decl_ctx->hasExternalLexicalStorage();
  45   bool has_external_visible_storage = decl_ctx->hasExternalVisibleStorage();
  46
  47   decl_ctx->setHasExternalLexicalStorage(false);
  48   decl_ctx->setHasExternalVisibleStorage(false);
  49
  50   if (clang::Decl *decl = llvm::dyn_cast<clang::Decl>(decl_ctx)) {
  51     llvm::raw_string_ostream os(m_dump);
  52     decl->print(os);
  53     os.flush();
  54   } else {
  55     m_dump.assign("<DeclContext is not a Decl>");
  56   }
  57
  58   decl_ctx->setHasExternalLexicalStorage(has_external_lexical_storage);
  59   decl_ctx->setHasExternalVisibleStorage(has_external_visible_storage);
  60 }
  61
  62 ASTDumper::ASTDumper(const clang::Type *type) {
  63   m_dump = clang::QualType(type, 0).getAsString();
  64 }
  65
  66 ASTDumper::ASTDumper(clang::QualType type) { m_dump = type.getAsString(); }
  67
  68 ASTDumper::ASTDumper(lldb::opaque_compiler_type_t type) {
  69   m_dump = clang::QualType::getFromOpaquePtr(type).getAsString();
  70 }
  71
  72 ASTDumper::ASTDumper(const CompilerType &compiler_type) {
  73   m_dump = ClangUtil::GetQualType(compiler_type).getAsString();
  74 }
  75
  76 const char *ASTDumper::GetCString() { return m_dump.c_str(); }
  77
  78 void ASTDumper::ToLog(Log *log, const char *prefix) {
  79   size_t len = m_dump.length() + 1;
  80
  81   char *alloc = (char *)malloc(len);
  82   char *str = alloc;
  83
  84   memcpy(str, m_dump.c_str(), len);
  85
  86   char *end = nullptr;
  87
  88   end = strchr(str, '\n');
  89
  90   while (end) {
  91     *end = '\0';
  92
  93     LLDB_LOGF(log, "%s%s", prefix, str);
  94
  95     *end = '\n';
  96
  97     str = end + 1;
  98     end = strchr(str, '\n');
  99   }
 100
 101   LLDB_LOGF(log, "%s%s", prefix, str);
 102
 103   free(alloc);
 104 }