Update

libclangmm/CodeCompleteResults.cc

@@ -7,7 +7,7 @@ clang::CodeCompleteResults::CodeCompleteResults(CXTranslationUnit &cx_tu,
                                                 const std::string &buffer,
                                                 unsigned line_num, unsigned column) {
   CXUnsavedFile files[1];
-  auto file_path=to_string(clang_getTranslationUnitSpelling(cx_tu));
+  auto file_path=ToString(clang_getTranslationUnitSpelling(cx_tu));
   files[0].Filename = file_path.c_str();
   files[0].Contents = buffer.c_str();
   files[0].Length = buffer.size();
@@ -41,5 +41,5 @@ clang::CompletionString clang::CodeCompleteResults::get(unsigned i) const {
 }
 
 std::string clang::CodeCompleteResults::get_usr() const {
-  return to_string(clang_codeCompleteGetContainerUSR(cx_results));
+  return ToString(clang_codeCompleteGetContainerUSR(cx_results));
 }

libclangmm/CompileCommand.cc

@@ -6,7 +6,7 @@ std::string clang::CompileCommand::get_command() {
   std::string res;
   unsigned N = clang_CompileCommand_getNumArgs(cx_command);
   for (unsigned i = 0; i < N; i++) {
-    res += to_string(clang_CompileCommand_getArg(cx_command, i));
+    res += ToString(clang_CompileCommand_getArg(cx_command, i));
   }
   return res;
 }
@@ -15,7 +15,7 @@ std::vector<std::string> clang::CompileCommand::get_command_as_args() {
   unsigned N = clang_CompileCommand_getNumArgs(cx_command);
   std::vector<std::string> res(N);
   for (unsigned i = 0; i < N; i++) {
-    res[i] = to_string(clang_CompileCommand_getArg(cx_command, i));
+    res[i] = ToString(clang_CompileCommand_getArg(cx_command, i));
   }
   return res;
 }

libclangmm/CompletionString.cc

@@ -15,13 +15,13 @@ unsigned clang::CompletionString::get_num_chunks() {
 std::vector<clang::CompletionChunk> clang::CompletionString::get_chunks() {
   std::vector<CompletionChunk> res;
   for (unsigned i = 0; i < get_num_chunks(); i++) {
-    res.emplace_back(to_string(clang_getCompletionChunkText(cx_completion_sting, i)), static_cast<CompletionChunkKind> (clang_getCompletionChunkKind(cx_completion_sting, i)));
+    res.emplace_back(ToString(clang_getCompletionChunkText(cx_completion_sting, i)), static_cast<CompletionChunkKind> (clang_getCompletionChunkKind(cx_completion_sting, i)));
   }
   return res;
 }
 
 std::string clang::CompletionString::get_brief_comments() {
-  return to_string(clang_getCompletionBriefComment(cx_completion_sting));
+  return ToString(clang_getCompletionBriefComment(cx_completion_sting));
 }
 
 clang::CompletionChunk::CompletionChunk(std::string chunk, CompletionChunkKind kind) :

libclangmm/Cursor.cc

@@ -4,28 +4,38 @@
 
 namespace clang {
 
-std::string Cursor::Type::get_spelling() const {
+static_assert(sizeof(Cursor) == sizeof(CXCursor), "Cursor must be the same size as CXCursor");
-  return to_string(clang_getTypeSpelling(cx_type));
+
+std::string Type::get_spelling() const {
+  return ToString(clang_getTypeSpelling(cx_type));
 }
 
-Cursor::Type Cursor::Type::get_result() const {
+Type Cursor::get_type() const {
-  return Type(clang_getResultType(cx_type));
+  return Type(clang_getCursorType(cx_cursor));
 }
 
-Cursor::Cursor() = default;
+bool Type::operator==(const Type& rhs) const {
-
-Cursor::Cursor(const CXCursor& other) : cx_cursor(cx_cursor) {}
-
-bool Cursor::Type::operator==(const Cursor::Type& rhs) const {
   return clang_equalTypes(cx_type, rhs.cx_type);
 }
 
-CXCursorKind Cursor::get_kind() const {
+Type Type::get_result() const {
-  return clang_getCursorKind(cx_cursor);
+  return Type(clang_getResultType(cx_type));
 }
 
-Cursor::Type Cursor::get_type() const {
+Cursor::Cursor() : cx_cursor(clang_getNullCursor()) {}
-  return Type(clang_getCursorType(cx_cursor));
+
+Cursor::Cursor(const CXCursor& other) : cx_cursor(other) {}
+
+Cursor::operator bool() const {
+  return !clang_Cursor_isNull(cx_cursor);
+}
+
+bool Cursor::operator==(const Cursor& rhs) const {
+  return clang_equalCursors(cx_cursor, rhs.cx_cursor);
+}
+
+CXCursorKind Cursor::get_kind() const {
+  return cx_cursor.kind;
 }
 
 SourceLocation Cursor::get_source_location() const {
@@ -37,15 +47,19 @@ SourceRange Cursor::get_source_range() const {
 }
 
 std::string Cursor::get_spelling() const {
-  return to_string(clang_getCursorSpelling(cx_cursor));
+  return ToString(clang_getCursorSpelling(cx_cursor));
 }
 
 std::string Cursor::get_display_name() const {
-  return to_string(clang_getCursorDisplayName(cx_cursor));
+  return ToString(clang_getCursorDisplayName(cx_cursor));
 }
 
 std::string Cursor::get_usr() const {
-  return to_string(clang_getCursorUSR(cx_cursor));
+  return ToString(clang_getCursorUSR(cx_cursor));
+}
+
+bool Cursor::is_definition() const {
+  return clang_isCursorDefinition(cx_cursor);
 }
 
 Cursor Cursor::get_referenced() const {
@@ -72,14 +86,6 @@ std::vector<Cursor> Cursor::get_arguments() const {
   return cursors;
 }
 
-Cursor::operator bool() const {
-  return !clang_Cursor_isNull(cx_cursor);
-}
-
-bool Cursor::operator==(const Cursor& rhs) const {
-  return clang_equalCursors(cx_cursor, rhs.cx_cursor);
-}
-
 bool Cursor::is_valid_kind() const {
   CXCursor referenced = clang_getCursorReferenced(cx_cursor);
   if (clang_Cursor_isNull(referenced))
@@ -96,13 +102,13 @@ std::string Cursor::get_type_description() const {
   auto referenced = clang_getCursorReferenced(cx_cursor);
   if (!clang_Cursor_isNull(referenced)) {
     auto type = clang_getCursorType(referenced);
-    spelling = to_string(clang_getTypeSpelling(type));
+    spelling = ToString(clang_getTypeSpelling(type));
 
 #if CINDEX_VERSION_MAJOR==0 && CINDEX_VERSION_MINOR<32
     const std::string auto_str = "auto";
     if (spelling.size() >= 4 && std::equal(auto_str.begin(), auto_str.end(), spelling.begin())) {
       auto canonical_type = clang_getCanonicalType(clang_getCursorType(cx_cursor));
-      auto canonical_spelling = to_string(clang_getTypeSpelling(canonical_type));
+      auto canonical_spelling = ToString(clang_getTypeSpelling(canonical_type));
       if (spelling.size() > 5 && spelling[4] == ' ' && spelling[5] == '&' && spelling != canonical_spelling)
         return canonical_spelling + " &";
       else
@@ -112,7 +118,7 @@ std::string Cursor::get_type_description() const {
     const std::string const_auto_str = "const auto";
     if (spelling.size() >= 10 && std::equal(const_auto_str.begin(), const_auto_str.end(), spelling.begin())) {
       auto canonical_type = clang_getCanonicalType(clang_getCursorType(cx_cursor));
-      auto canonical_spelling = to_string(clang_getTypeSpelling(canonical_type));
+      auto canonical_spelling = ToString(clang_getTypeSpelling(canonical_type));
       if (spelling.size() > 11 && spelling[10] == ' ' && spelling[11] == '&' && spelling != canonical_spelling)
         return canonical_spelling + " &";
       else
@@ -127,10 +133,10 @@ std::string Cursor::get_type_description() const {
   return spelling;
 }
 
-std::string Cursor::get_brief_comments() const {
+std::string Cursor::get_comments() const {
   Cursor referenced = get_referenced();
   if (referenced)
-    return to_string(clang_Cursor_getBriefCommentText(referenced.cx_cursor));
+    return ToString(clang_Cursor_getRawCommentText(referenced.cx_cursor));
 
   return "";
 }

libclangmm/Cursor.h

@@ -3,28 +3,40 @@
 
 #include <string>
 #include <vector>
-#include <clang-c/Index.h>
+#include <type_traits>
 
+#include <clang-c/Index.h>
 #include "SourceLocation.h"
 #include "SourceRange.h"
 
 
 namespace clang {
-  class Cursor {
-  public:
 
 class Type {
 public:
   Type(const CXType &cx_type) : cx_type(cx_type) {}
+
+  bool operator==(const Type& rhs) const;
+
   std::string get_spelling() const;
   Type get_result() const;
-      bool operator==(const Cursor::Type& rhs) const;
 
   CXType cx_type;
 };
 
+enum class VisiterResult {
+  Break,
+  Continue,
+  Recurse
+};
+
+class Cursor {
+public:
   Cursor();
-    explicit Cursor(const CXCursor& cx_cursor);
+  explicit Cursor(const CXCursor& other);
+
+  operator bool() const;
+  bool operator==(const Cursor& rhs) const;
 
   CXCursorKind get_kind() const;
   Type get_type() const;
@@ -33,19 +45,34 @@ namespace clang {
   std::string get_spelling() const;
   std::string get_display_name() const;
   std::string get_usr() const;
+
+  bool is_definition() const;
+
   Cursor get_referenced() const;
   Cursor get_canonical() const;
   Cursor get_definition() const;
   Cursor get_semantic_parent() const;
   std::vector<Cursor> get_arguments() const;
-    operator bool() const;
-    bool operator==(const Cursor& rhs) const;
-    
   bool is_valid_kind() const;
   std::string get_type_description() const;
-    std::string get_brief_comments() const;
+  std::string get_comments() const;
 
-    CXCursor cx_cursor = clang_getNullCursor();
+  template<typename TClientData>
+  using Visitor = VisiterResult(*)(Cursor cursor, Cursor parent, TClientData* client_data);
+
+  enum class VisitResult {
+    Completed, EndedEarly
+  };
+
+  template<typename TClientData>
+  VisitResult VisitChildren(Visitor<TClientData> visitor, TClientData* client_data) const {
+    if (clang_visitChildren(cx_cursor, reinterpret_cast<CXCursorVisitor>(visitor), client_data) == 0)
+      return VisitResult::Completed;
+    return VisitResult::EndedEarly;
+  }
+
+  CXCursor cx_cursor;
 };
 }  // namespace clang
+
 #endif  // CURSOR_H_

libclangmm/Diagnostic.cc

@@ -6,7 +6,7 @@
 clang::Diagnostic::Diagnostic(CXTranslationUnit& cx_tu, CXDiagnostic& cx_diagnostic) {
   severity=clang_getDiagnosticSeverity(cx_diagnostic);
   severity_spelling=get_severity_spelling(severity);
-  spelling=to_string(clang_getDiagnosticSpelling(cx_diagnostic));
+  spelling=ToString(clang_getDiagnosticSpelling(cx_diagnostic));
   
   SourceLocation start_location(clang_getDiagnosticLocation(cx_diagnostic));
   path=start_location.get_path();
@@ -18,7 +18,7 @@ clang::Diagnostic::Diagnostic(CXTranslationUnit& cx_tu, CXDiagnostic& cx_diagnos
   unsigned num_fix_its=clang_getDiagnosticNumFixIts(cx_diagnostic);
   for(unsigned c=0;c<num_fix_its;c++) {
     CXSourceRange fix_it_range;
-    auto source=to_string(clang_getDiagnosticFixIt(cx_diagnostic, c, &fix_it_range));
+    auto source=ToString(clang_getDiagnosticFixIt(cx_diagnostic, c, &fix_it_range));
     fix_its.emplace_back(source, SourceRange(fix_it_range).get_offsets());
   }
 }

libclangmm/Diagnostic.h

@@ -6,6 +6,7 @@
 #include "SourceRange.h"
 
 namespace clang {
+
 class Diagnostic {
   friend class TranslationUnit;
   Diagnostic(CXTranslationUnit& cx_tu, CXDiagnostic& cx_diagnostic);
@@ -27,6 +28,6 @@ namespace clang {
   std::pair<clang::Offset, clang::Offset> offsets;
   std::vector<FixIt> fix_its;
 };
-}
 
+}
 #endif  // DIAGNOSTIC_H_

libclangmm/SourceLocation.cc

@@ -31,7 +31,7 @@ void SourceLocation::get_data(std::string* path, unsigned *line, unsigned *colum
     CXFile file;
     clang_getExpansionLocation(cx_location, &file, line, column, offset);
     if (file != nullptr) {
-      *path = to_string(clang_getFileName(file));
+      *path = ToString(clang_getFileName(file));
     }
   }
 }

libclangmm/Token.cc

@@ -17,7 +17,7 @@ clang::SourceRange clang::Token::get_source_range() const {
 }
 // returns a string description of this tokens kind
 std::string clang::Token::get_spelling() const {
-  return to_string(clang_getTokenSpelling(cx_tu, cx_token));
+  return ToString(clang_getTokenSpelling(cx_tu, cx_token));
 }
 
 clang::Token::Kind clang::Token::get_kind() const {

libclangmm/TranslationUnit.cc

@@ -5,10 +5,9 @@
 #include <fstream>
 #include <sstream>
 
-#include <iostream> //TODO: remove
+namespace clang {
-using namespace std; //TODO: remove
 
-clang::TranslationUnit::TranslationUnit(Index &index, const std::string &file_path,
+TranslationUnit::TranslationUnit(Index &index, const std::string &file_path,
   const std::vector<std::string> &command_line_args,
   const std::string &buffer, unsigned flags) {
   std::vector<const char*> args;
@@ -25,7 +24,7 @@ clang::TranslationUnit::TranslationUnit(Index &index, const std::string &file_pa
     args.size(), files, 1, flags);
 }
 
-clang::TranslationUnit::TranslationUnit(Index &index, const std::string &file_path,
+TranslationUnit::TranslationUnit(Index &index, const std::string &file_path,
   const std::vector<std::string> &command_line_args,
   unsigned flags) {
   std::vector<const char*> args;
@@ -37,11 +36,11 @@ clang::TranslationUnit::TranslationUnit(Index &index, const std::string &file_pa
     args.size(), nullptr, 0, flags);
 }
 
-clang::TranslationUnit::~TranslationUnit() {
+TranslationUnit::~TranslationUnit() {
   clang_disposeTranslationUnit(cx_tu);
 }
 
-void clang::TranslationUnit::parse(Index &index, const std::string &file_path, 
+void TranslationUnit::parse(Index &index, const std::string &file_path,
   const std::vector<std::string> &command_line_args,
   const std::map<std::string, std::string>  &buffers, unsigned flags) {
   std::vector<CXUnsavedFile> files;
@@ -60,10 +59,10 @@ void clang::TranslationUnit::parse(Index &index, const std::string &file_path,
     args.size(), files.data(), files.size(), flags);
 }
 
-int clang::TranslationUnit::ReparseTranslationUnit(const std::string &buffer, unsigned flags) {
+int TranslationUnit::ReparseTranslationUnit(const std::string &buffer, unsigned flags) {
   CXUnsavedFile files[1];
 
-  auto file_path=to_string(clang_getTranslationUnitSpelling(cx_tu));
+  auto file_path = ToString(clang_getTranslationUnitSpelling(cx_tu));
 
   files[0].Filename = file_path.c_str();
   files[0].Contents = buffer.c_str();
@@ -72,7 +71,7 @@ int clang::TranslationUnit::ReparseTranslationUnit(const std::string &buffer, un
   return clang_reparseTranslationUnit(cx_tu, 1, files, flags);
 }
 
-unsigned clang::TranslationUnit::DefaultFlags() {
+unsigned TranslationUnit::DefaultFlags() {
   auto flags =
     CXTranslationUnit_CacheCompletionResults |
     CXTranslationUnit_PrecompiledPreamble |
@@ -84,13 +83,13 @@ unsigned clang::TranslationUnit::DefaultFlags() {
   return flags;
 }
 
-clang::CodeCompleteResults clang::TranslationUnit::get_code_completions(const std::string &buffer,
+CodeCompleteResults TranslationUnit::get_code_completions(const std::string &buffer,
   unsigned line_number, unsigned column) {
   CodeCompleteResults results(cx_tu, buffer, line_number, column);
   return results;
 }
 
-std::vector<clang::Diagnostic> clang::TranslationUnit::get_diagnostics() {
+std::vector<Diagnostic> TranslationUnit::get_diagnostics() {
   std::vector<Diagnostic> diagnostics;
   for (unsigned c = 0; c < clang_getNumDiagnostics(cx_tu); c++) {
     CXDiagnostic clang_diagnostic = clang_getDiagnostic(cx_tu, c);
@@ -100,29 +99,34 @@ std::vector<clang::Diagnostic> clang::TranslationUnit::get_diagnostics() {
   return diagnostics;
 }
 
-std::unique_ptr<clang::Tokens> clang::TranslationUnit::get_tokens(unsigned start_offset, unsigned end_offset) {
+std::unique_ptr<Tokens> TranslationUnit::get_tokens(unsigned start_offset, unsigned end_offset) {
-  auto path=clang::to_string(clang_getTranslationUnitSpelling(cx_tu));
+  auto path = ToString(clang_getTranslationUnitSpelling(cx_tu));
   SourceLocation start_location(cx_tu, path, start_offset);
   SourceLocation end_location(cx_tu, path, end_offset);
   SourceRange range(start_location, end_location);
   return std::unique_ptr<Tokens>(new Tokens(cx_tu, range));
 }
 
-std::unique_ptr<clang::Tokens> clang::TranslationUnit::get_tokens(unsigned start_line, unsigned start_column,
+std::unique_ptr<Tokens> TranslationUnit::get_tokens(unsigned start_line, unsigned start_column, unsigned end_line, unsigned end_column) {
-                                                                  unsigned end_line, unsigned end_column) {
+  auto path = ToString(clang_getTranslationUnitSpelling(cx_tu));
-  auto path=to_string(clang_getTranslationUnitSpelling(cx_tu));
   SourceLocation start_location(cx_tu, path, start_line, start_column);
   SourceLocation end_location(cx_tu, path, end_line, end_column);
   SourceRange range(start_location, end_location);
   return std::unique_ptr<Tokens>(new Tokens(cx_tu, range));
 }
 
-clang::Cursor clang::TranslationUnit::get_cursor(std::string path, unsigned offset) {
+Cursor TranslationUnit::document_cursor() const {
+  return Cursor(clang_getTranslationUnitCursor(cx_tu));
+}
+
+Cursor TranslationUnit::get_cursor(std::string path, unsigned offset) {
   SourceLocation location(cx_tu, path, offset);
   return Cursor(clang_getCursor(cx_tu, location.cx_location));
 }
 
-clang::Cursor clang::TranslationUnit::get_cursor(std::string path, unsigned line, unsigned column) {
+Cursor TranslationUnit::get_cursor(std::string path, unsigned line, unsigned column) {
   SourceLocation location(cx_tu, path, line, column);
   return Cursor(clang_getCursor(cx_tu, location.cx_location));
 }
+
+}

libclangmm/TranslationUnit.h

@@ -44,6 +44,8 @@ namespace clang {
     std::unique_ptr<Tokens> get_tokens(unsigned start_line, unsigned start_column,
                                        unsigned end_line, unsigned end_column);
 
+    Cursor document_cursor() const;
+
     clang::Cursor get_cursor(std::string path, unsigned offset);
     clang::Cursor get_cursor(std::string path, unsigned line, unsigned column);
 

libclangmm/Utility.cc

@@ -1,6 +1,6 @@
 #include "Utility.h"
 
-std::string clang::to_string(CXString cx_string) {
+std::string clang::ToString(CXString cx_string) {
   std::string string;
   if(cx_string.data!=nullptr) {
     string=clang_getCString(cx_string);
@@ -9,7 +9,7 @@ std::string clang::to_string(CXString cx_string) {
   return string;
 }
 
-std::string clang::to_string(CXCursorKind kind) {
+std::string clang::ToString(CXCursorKind kind) {
   switch (kind) {
   case CXCursor_UnexposedDecl: return "UnexposedDecl";
   case CXCursor_StructDecl: return "StructDecl";
@@ -177,5 +177,5 @@ std::string clang::to_string(CXCursorKind kind) {
   //case CXCursor_FirstExtraDecl: return "FirstExtraDecl";
   case CXCursor_LastExtraDecl: return "LastExtraDecl";
   }
-  return "";
+  return "<unknown kind>";
 }

libclangmm/Utility.h

@@ -1,11 +1,11 @@
-#ifndef UTILITY_H_
+#pragma once
-#define UTILITY_H_
+
 #include <clang-c/Index.h>
 #include <string>
 
 namespace clang {
-  std::string to_string(CXString cx_string);
-  std::string to_string(CXCursorKind cursor_kind);
-}
 
-#endif  // UTILITY_H_
+std::string ToString(CXString cx_string);
+std::string ToString(CXCursorKind cursor_kind);
+
+}  // namespace clang

main.cpp

@@ -1,85 +1,513 @@
+#include <optional>
 #include <iostream>
+#include <cstdint>
+#include <cassert>
+#include <fstream>
 
 #include "libclangmm\clangmm.h"
 #include "libclangmm\Utility.h"
+
+#include "utils.h"
 //#include <clang-c\Index.h>
 
-CXChildVisitResult visitPrint(CXCursor cursor0, CXCursor parent, CXClientData param) {
-  int* level = static_cast<int*>(param);
 
-  clang::Cursor cursor(cursor0);
+// While indexing, we should refer to symbols by USR. When joining into the db, we can have optimized access.
 
-  for (int i = 0; i < *level; ++i)
+struct TypeDef;
-    std::cout << "  ";
+struct FuncDef;
-  std::cout << cursor.get_spelling() << " " << clang::to_string(cursor.get_kind()) << std::endl;
+struct VarDef;
 
-  *level += 1;
-  clang_visitChildren(cursor0, &visitPrint, level);
-  *level -= 1;
 
-  return CXChildVisitResult::CXChildVisit_Continue;
+template<typename T>
-/*
+struct Id {
-  echo "  ".repeat(param.level), cursor.kind, " ", getSpelling(cursor)
+  uint64_t file_id;
+  uint64_t local_id;
 
-  var visitParam : VisitPrintParam
+  Id() : file_id(0), local_id(0) {} // Needed for containers. Do not use directly.
-  visitParam.level = param.level + 1
+  Id(uint64_t file_id, uint64_t local_id)
-  visitChildren(cursor, visitPrint, addr visitParam)
+    : file_id(file_id), local_id(local_id) {}
+};
+using TypeId = Id<TypeDef>;
+using FuncId = Id<FuncDef>;
+using VarId = Id<VarDef>;
 
-  return VisitResult.Continu
+
-*/
+template<typename T>
+struct Ref {
+  Id<T> id;
+  clang::SourceLocation loc;
+};
+using TypeRef = Ref<TypeDef>;
+using FuncRef = Ref<FuncDef>;
+using VarRef = Ref<VarDef>;
+
+
+struct TypeDef {
+  TypeDef(TypeId id);
+
+  // General metadata.
+  TypeId id;
+  std::string usr;
+  std::string shortName;
+  std::string qualifiedName;
+  std::optional<clang::SourceLocation> definition;
+
+  // Immediate parent and immediate derived types.
+  std::vector<TypeId> parents;
+  std::vector<TypeId> derived;
+
+  // Types, functions, and variables defined in this type.
+  std::vector<TypeId> types;
+  std::vector<FuncId> funcs;
+  std::vector<VarId> vars;
+
+  // Usages.
+  std::vector<clang::SourceLocation> uses;
+};
+
+TypeDef::TypeDef(TypeId id) : id(id) {}
+
+struct FuncDef {
+  FuncDef(FuncId id);
+
+  // General metadata.
+  FuncId id;
+  std::string usr;
+  std::string shortName;
+  std::string qualifiedName;
+  std::optional<clang::SourceLocation> declaration;
+  std::optional<clang::SourceLocation> definition;
+
+  // Type which declares this one (ie, it is a method)
+  std::optional<TypeId> declaringType;
+  // Method this method overrides.
+  std::optional<FuncId> baseFunc;
+  // Methods which directly override this one.
+  std::vector<FuncId> derived;
+
+  // Local variables defined in this function.
+  std::vector<VarId> locals;
+
+  // Functions which call this one.
+  std::vector<FuncRef> callers;
+  // Functions that this function calls.
+  std::vector<FuncRef> callees;
+
+  // Usages.
+  std::vector<clang::SourceLocation> uses;
+};
+
+FuncDef::FuncDef(FuncId id) : id(id) {}
+
+struct VarDef {
+  VarDef(VarId id);
+
+  // General metadata.
+  VarId id;
+  std::string usr;
+  std::string shortName;
+  std::string qualifiedName;
+  std::optional<clang::SourceLocation> declaration;
+  std::vector<clang::SourceLocation> initializations;
+
+  // Type of the variable.
+  std::optional<TypeId> variableType;
+
+  // Type which declares this one (ie, it is a method)
+  std::optional<TypeId> declaringType;
+
+  // Usages.
+  std::vector<clang::SourceLocation> uses;
+};
+
+VarDef::VarDef(VarId id) : id(id) {}
+
+
+struct ParsingDatabase {
+  // NOTE: Every Id is resolved to a file_id of 0. The correct file_id needs
+  //       to get fixed up when inserting into the real db.
+  std::unordered_map<std::string, TypeId> usrToTypeId;
+  std::unordered_map<std::string, FuncId> usrToFuncId;
+  std::unordered_map<std::string, VarId> usrToVarId;
+
+  std::vector<TypeDef> types;
+  std::vector<FuncDef> funcs;
+  std::vector<VarDef> vars;
+
+  TypeId ToTypeId(const std::string& usr);
+  FuncId ToFuncId(const std::string& usr);
+  VarId ToVarId(const std::string& usr);
+
+  TypeDef* Resolve(TypeId id);
+  FuncDef* Resolve(FuncId id);
+  VarDef* Resolve(VarId id);
+
+  std::vector<std::string> ToString();
+};
+
+TypeId ParsingDatabase::ToTypeId(const std::string& usr) {
+  auto it = usrToTypeId.find(usr);
+  if (it != usrToTypeId.end())
+    return it->second;
+
+  TypeId id(0, types.size());
+  types.push_back(TypeDef(id));
+  usrToTypeId[usr] = id;
+  return id;
+}
+FuncId ParsingDatabase::ToFuncId(const std::string& usr) {
+  auto it = usrToFuncId.find(usr);
+  if (it != usrToFuncId.end())
+    return it->second;
+
+  FuncId id(0, funcs.size());
+  funcs.push_back(FuncDef(id));
+  usrToFuncId[usr] = id;
+  return id;
+}
+VarId ParsingDatabase::ToVarId(const std::string& usr) {
+  auto it = usrToVarId.find(usr);
+  if (it != usrToVarId.end())
+    return it->second;
+
+  VarId id(0, vars.size());
+  vars.push_back(VarDef(id));
+  usrToVarId[usr] = id;
+  return id;
 }
 
-int main(int argc, char** argv) {
+TypeDef* ParsingDatabase::Resolve(TypeId id) {
+  return &types[id.local_id];
+}
+FuncDef* ParsingDatabase::Resolve(FuncId id) {
+  return &funcs[id.local_id];
+}
+VarDef* ParsingDatabase::Resolve(VarId id) {
+  return &vars[id.local_id];
+}
+
+std::vector<std::string> ParsingDatabase::ToString() {
+  std::vector<std::string> result;
+
+  result.push_back("Types:");
+  for (TypeDef& def : types) {
+    result.push_back("  " + def.qualifiedName);
+  }
+
+  result.push_back("Funcs:");
+  for (FuncDef& def : funcs) {
+    result.push_back("  " + def.qualifiedName);
+  }
+
+  result.push_back("Vars:");
+  for (VarDef& def : vars) {
+    result.push_back("  " + def.qualifiedName);
+  }
+
+  return result;
+}
+
+struct FileDef {
+  uint64_t id;
+  std::string path;
+  std::vector<TypeDef> types;
+  std::vector<FuncDef> funcs;
+  std::vector<VarDef> vars;
+};
+
+
+
+struct Database {
+  std::unordered_map<std::string, TypeId> usrToTypeId;
+  std::unordered_map<std::string, FuncId> usrToFuncId;
+  std::unordered_map<std::string, VarId> usrToVarId;
+
+  std::vector<FileDef> files;
+
+  TypeId ToTypeId(const std::string& usr);
+  FuncId ToFuncId(const std::string& usr);
+  VarId ToVarId(const std::string& usr);
+};
+
+TypeId Database::ToTypeId(const std::string& usr) {
+  auto it = usrToTypeId.find(usr);
+  assert(it != usrToTypeId.end() && "Usr is not registered");
+  return it->second;
+}
+FuncId Database::ToFuncId(const std::string& usr) {
+  auto it = usrToFuncId.find(usr);
+  assert(it != usrToFuncId.end() && "Usr is not registered");
+  return it->second;
+}
+VarId Database::ToVarId(const std::string& usr) {
+  auto it = usrToVarId.find(usr);
+  assert(it != usrToVarId.end() && "Usr is not registered");
+  return it->second;
+}
+
+TypeDef* Resolve(FileDef* file, TypeId id) {
+  assert(file->id == id.file_id);
+  return &file->types[id.local_id];
+}
+FuncDef* Resolve(FileDef* file, FuncId id) {
+  assert(file->id == id.file_id);
+  return &file->funcs[id.local_id];
+}
+VarDef* Resolve(FileDef* file, VarId id) {
+  assert(file->id == id.file_id);
+  return &file->vars[id.local_id];
+}
+
+TypeDef* Resolve(Database* db, TypeId id) {
+  return Resolve(&db->files[id.file_id], id);
+}
+FuncDef* Resolve(Database* db, FuncId id) {
+  return Resolve(&db->files[id.file_id], id);
+}
+VarDef* Resolve(Database* db, VarId id) {
+  return Resolve(&db->files[id.file_id], id);
+}
+
+
+struct NamespaceStack {
+  std::vector<std::string> stack;
+
+  void Push(const std::string& ns);
+  void Pop();
+  std::string ComputeQualifiedPrefix();
+};
+
+void NamespaceStack::Push(const std::string& ns) {
+  stack.push_back(ns);
+}
+
+void NamespaceStack::Pop() {
+  stack.pop_back();
+}
+
+std::string NamespaceStack::ComputeQualifiedPrefix() {
+  std::string result;
+  for (const std::string& ns : stack)
+    result += ns + "::";
+  return result;
+}
+
+
+
+
+struct FuncDefinitionParam {};
+
+clang::VisiterResult VisitFuncDefinition(clang::Cursor cursor, clang::Cursor parent, FuncDefinitionParam* param) {
   /*
-    echo "Parsing ", filename
+  switch (cursor.get_kind()) {
-    let index : libclang.CXIndex = libclang.createIndex(#[excludeDeclsFromPCH]# 0, #[displayDiagnostics]# 0)
 
-    let translationUnit : libclang.CXTranslationUnit =
+  default:
-    libclang.parseTranslationUnit(index, filename.cstring, nil, 0, nil, 0, 0)
+    std::cerr << "Unhandled VisitFuncDefinition kind " << clang::ToString(cursor.get_kind()) << std::endl;
-    if translationUnit == nil :
+    break;
-      echo "Error: cannot create translation unit for '", filename, "'"
+  }
-      return
-
-    let cursor = libclang.getTranslationUnitCursor(translationUnit)
-
-    var param : VisitFileParam
-    param.db = db
-
-    echo "=== START AST ==="
-    # printChildren(cursor, 0)
-    echo "=== DONE AST ==="
-
-    var file : File
-    file.path = filename
-    file.vars = newList[VarRef]()
-    file.funcs = newList[FuncRef]()
-    file.types = newList[TypeRef]()
-
-    visitChildren(cursor, visitFile, addr param)
-
-    libclang.disposeTranslationUnit(translationUnit)
-    libclang.disposeIndex(index)
   */
 
+  return clang::VisiterResult::Break;
+}
+
+void HandleFunc(ParsingDatabase* db, NamespaceStack* ns, clang::Cursor func, std::optional<TypeId> declaringType) {
+  // What this method must process:
+  // - function declaration
+  // - function definition
+  // - method declaration
+  // - method inline definition
+  // - method definition
+
+  // TODO: Make sure we only process once for declared/defined types.
+
+  // TODO: method_definition_in_namespace.cc is failing because we process decl with correct declaringType, but
+  //       processing method definition fails to resolve correct declaringType.
+  //if (func.is_definition()) // RM after addressed above
+  //  return;                 // RM after addressed above
+
+  FuncId id = db->ToFuncId(func.get_usr());
+  db->Resolve(id)->shortName = func.get_spelling();
+
+  std::string typeName;
+  if (declaringType)
+    typeName = db->Resolve(declaringType.value())->shortName + "::";
+  db->Resolve(id)->qualifiedName = ns->ComputeQualifiedPrefix() + typeName + func.get_spelling();
+  std::cout << func.get_usr() << ": Set qualified name to " << db->Resolve(id)->qualifiedName << std::endl;
+
+  //std::cout << "!! HandleFunc " << func.get_type_description() << std::endl;
+  //std::cout << "  comment: " << func.get_comments() << std::endl;
+  //std::cout << "  spelling: " << func.get_spelling() << std::endl;
+  //for (clang::Cursor argument : func.get_arguments())
+  //  std::cout << "  arg: " << clang::ToString(argument.get_kind()) << " " << argument.get_spelling() << std::endl;
+}
+
+
+
+
+
+struct ClassDeclParam {
+  ParsingDatabase* db;
+  NamespaceStack* ns;
+  TypeId active_type;
+
+  ClassDeclParam(ParsingDatabase* db, NamespaceStack* ns, TypeId active_type)
+    : db(db), ns(ns), active_type(active_type) {}
+};
+
+clang::VisiterResult VisitClassDecl(clang::Cursor cursor, clang::Cursor parent, ClassDeclParam* param) {
+  ParsingDatabase* db = param->db;
+
+  switch (cursor.get_kind()) {
+  case CXCursor_CXXMethod:
+    HandleFunc(param->db, param->ns, cursor, param->active_type);
+    break;
+
+  default:
+    std::cerr << "Unhandled VisitClassDecl kind " << clang::ToString(cursor.get_kind()) << std::endl;
+    break;
+  }
+
+  return clang::VisiterResult::Continue;
+}
+
+void HandleClassDecl(clang::Cursor cursor, ParsingDatabase* db, NamespaceStack* ns) {
+  TypeId active_type = db->ToTypeId(cursor.get_usr());
+  db->Resolve(active_type)->shortName = cursor.get_spelling();
+  db->Resolve(active_type)->qualifiedName = ns->ComputeQualifiedPrefix() + cursor.get_spelling();
+
+  ClassDeclParam classDeclParam(db, ns, active_type);
+  cursor.VisitChildren(&VisitClassDecl, &classDeclParam);
+}
+
+
+
+
+
+
+struct FileParam {
+  ParsingDatabase* db;
+  NamespaceStack* ns;
+
+  FileParam(ParsingDatabase* db, NamespaceStack* ns) : db(db), ns(ns) {}
+};
+
+clang::VisiterResult VisitFile(clang::Cursor cursor, clang::Cursor parent, FileParam* param) {
+  switch (cursor.get_kind()) {
+  case CXCursor_Namespace:
+    // For a namespace, visit the children of the namespace, but this time with
+    // a pushed namespace stack.
+    param->ns->Push(cursor.get_display_name());
+    cursor.VisitChildren(&VisitFile, param);
+    param->ns->Pop();
+    break;
+
+  case CXCursor_ClassDecl:
+    // TODO: Cleanup Handle* param order.
+    HandleClassDecl(cursor, param->db, param->ns);
+    break;
+
+  case CXCursor_CXXMethod:
+  case CXCursor_FunctionDecl:
+    HandleFunc(param->db, param->ns, cursor, std::nullopt);
+    break;
+
+  default:
+    std::cerr << "Unhandled VisitFile kind " << clang::ToString(cursor.get_kind()) << std::endl;
+    break;
+  }
+
+  return clang::VisiterResult::Continue;
+}
+
+
+
+
+
+
+
+
+
+
+
+clang::VisiterResult DumpVisitor(clang::Cursor cursor, clang::Cursor parent, int* level) {
+  for (int i = 0; i < *level; ++i)
+    std::cout << "  ";
+  std::cout << cursor.get_spelling() << " " << clang::ToString(cursor.get_kind()) << std::endl;
+
+  *level += 1;
+  cursor.VisitChildren(&DumpVisitor, level);
+  *level -= 1;
+
+  return clang::VisiterResult::Continue;
+}
+
+void Dump(clang::Cursor cursor) {
+  int level = 0;
+  cursor.VisitChildren(&DumpVisitor, &level);
+}
+
+ParsingDatabase Parse(std::string filename) {
   std::vector<std::string> args;
 
   clang::Index index(0 /*excludeDeclarationsFromPCH*/, 0 /*displayDiagnostics*/);
-  clang::TranslationUnit translationUnit(index, "test.cc", args);
+  clang::TranslationUnit tu(index, filename, args);
 
-  int level = 0;
+  //std::cout << "Start document dump" << std::endl;
-  auto cursor = clang_getTranslationUnitCursor(translationUnit.cx_tu);
+  //Dump(tu.document_cursor());
-  clang_visitChildren(cursor, &visitPrint, &level);
+  //std::cout << "Done document dump" << std::endl << std::endl;
-  /*
+
-  TranslationUnit(Index &index,
+  ParsingDatabase db;
-    const std::string &file_path,
+  NamespaceStack ns;
-    const std::vector<std::string> &command_line_args,
+  FileParam fileParam(&db, &ns);
-    const std::string &buffer,
+  tu.document_cursor().VisitChildren(&VisitFile, &fileParam);
-    unsigned flags = DefaultFlags());
+  return db;
-  TranslationUnit(Index &index,
+}
-    const std::string &file_path,
+
-    const std::vector<std::string> &command_line_args,
+template<typename T>
-    unsigned flags = DefaultFlags());
+bool AreEqual(const std::vector<T>& a, const std::vector<T>& b) {
-  */
+  if (a.size() != b.size())
+    return false;
+
+  for (int i = 0; i < a.size(); ++i) {
+    if (a[i] != b[i])
+      return false;
+  }
+
+  return true;
+}
+
+void Write(const std::vector<std::string>& strs) {
+  for (const std::string& str : strs) {
+    std::cout << str << std::endl;
+  }
+}
+
+int main(int argc, char** argv) {
+  for (std::string path : GetFilesInFolder("tests")) {
+    // TODO: Fix all existing tests.
+    if (path != "tests/method_definition_in_namespace.cc") continue;
+
+    std::vector<std::string> expected_output;
+    ParseTestExpectation(path, &expected_output);
+
+    std::cout << "[START] " << path << std::endl;
+
+    ParsingDatabase db = Parse(path);
+    std::vector<std::string> actual_output = db.ToString();
+
+    if (AreEqual(expected_output, actual_output)) {
+      std::cout << "[PASSED] " << path << std::endl;
+    }
+    else {
+      std::cout << "[FAILED] " << path << std::endl;
+      std::cout << "Expected output for " << path << ":" << std::endl;
+      Write(expected_output);
+      std::cout << "Actual output for " << path << ":" << std::endl;
+      Write(actual_output);
+      break;
+    }
+  }
 
   std::cin.get();
+  return 0;
 }

test.cc

@@ -1,2 +1,2 @@
-void bar() {}
+void bar(int a, int b) {}
 void foo() {}

tests/function_declaration.cc

@@ -0,0 +1,9 @@
+void foo(int a, int b);
+
+/*
+OUTPUT:
+Types:
+Funcs:
+  foo
+Vars:
+*/

tests/function_declaration_in_namespace.cc

@@ -0,0 +1,11 @@
+namespace hello {
+void foo(int a, int b);
+}
+
+/*
+OUTPUT:
+Types:
+Funcs:
+  hello::foo
+Vars:
+*/

tests/function_definition.cc

@@ -0,0 +1,9 @@
+void foo(int a, int b) {}
+
+/*
+OUTPUT:
+Types:
+Funcs:
+  foo
+Vars:
+*/

tests/function_definition_in_namespace.cc

@@ -0,0 +1,11 @@
+namespace hello {
+void foo(int a, int b) {}
+}
+
+/*
+OUTPUT:
+Types:
+Funcs:
+  hello::foo
+Vars:
+*/

tests/method_declaration.cc

@@ -0,0 +1,11 @@
+class Foo {
+  void foo();
+};
+
+/*
+OUTPUT:
+Types:
+Funcs:
+  foo
+Vars:
+*/

tests/method_declaration_in_namespace.cc

@@ -0,0 +1,13 @@
+namespace hello {
+class Foo {
+  void foo();
+};
+}
+
+/*
+OUTPUT:
+Types:
+Funcs:
+  hello::Foo::foo
+Vars:
+*/

tests/method_definition.cc

@@ -0,0 +1,13 @@
+class Foo {
+  void foo();
+};
+
+void Foo::foo() {}
+
+/*
+OUTPUT:
+Types:
+Funcs:
+  foo
+Vars:
+*/

tests/method_definition_in_namespace.cc

@@ -0,0 +1,15 @@
+namespace hello {
+class Foo {
+  void foo();
+};
+
+void Foo::foo() {}
+}
+
+/*
+OUTPUT:
+Types:
+Funcs:
+  hello::Foo::foo
+Vars:
+*/

tests/method_inline_declaration.cc

@@ -0,0 +1,11 @@
+class Foo {
+  void foo() {}
+};
+
+/*
+OUTPUT:
+Types:
+Funcs:
+  foo
+Vars:
+*/

tests/method_inline_declaration_in_namespace.cc

@@ -0,0 +1,13 @@
+namespace hello {
+class Foo {
+  void foo() {}
+};
+}
+
+/*
+OUTPUT:
+Types:
+Funcs:
+  hello::Foo::foo
+Vars:
+*/

tinydir.h

@@ -0,0 +1,804 @@
+/*
+Copyright (c) 2013-2016, tinydir authors:
+- Cong Xu
+- Lautis Sun
+- Baudouin Feildel
+- Andargor <andargor@yahoo.com>
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+1. Redistributions of source code must retain the above copyright notice, this
+   list of conditions and the following disclaimer.
+2. Redistributions in binary form must reproduce the above copyright notice,
+   this list of conditions and the following disclaimer in the documentation
+   and/or other materials provided with the distribution.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
+ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+#ifndef TINYDIR_H
+#define TINYDIR_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#if ((defined _UNICODE) && !(defined UNICODE))
+#define UNICODE
+#endif
+
+#if ((defined UNICODE) && !(defined _UNICODE))
+#define _UNICODE
+#endif
+
+#include <errno.h>
+#include <stdlib.h>
+#include <string.h>
+#ifdef _MSC_VER
+# define WIN32_LEAN_AND_MEAN
+# include <windows.h>
+# include <tchar.h>
+# pragma warning(push)
+# pragma warning (disable : 4996)
+#else
+# include <dirent.h>
+# include <libgen.h>
+# include <sys/stat.h>
+# include <stddef.h>
+#endif
+#ifdef __MINGW32__
+# include <tchar.h>
+#endif
+
+
+/* types */
+
+/* Windows UNICODE wide character support */
+#if defined _MSC_VER || defined __MINGW32__
+#define _tinydir_char_t TCHAR
+#define TINYDIR_STRING(s) _TEXT(s)
+#define _tinydir_strlen _tcslen
+#define _tinydir_strcpy _tcscpy
+#define _tinydir_strcat _tcscat
+#define _tinydir_strcmp _tcscmp
+#define _tinydir_strrchr _tcsrchr
+#define _tinydir_strncmp _tcsncmp
+#else
+#define _tinydir_char_t char
+#define TINYDIR_STRING(s) s
+#define _tinydir_strlen strlen
+#define _tinydir_strcpy strcpy
+#define _tinydir_strcat strcat
+#define _tinydir_strcmp strcmp
+#define _tinydir_strrchr strrchr
+#define _tinydir_strncmp strncmp
+#endif
+
+#if (defined _MSC_VER || defined __MINGW32__)
+#include <windows.h>
+#define _TINYDIR_PATH_MAX MAX_PATH
+#elif defined  __linux__
+#include <linux/limits.h>
+#define _TINYDIR_PATH_MAX PATH_MAX
+#else
+#define _TINYDIR_PATH_MAX 4096
+#endif
+
+#ifdef _MSC_VER
+/* extra chars for the "\\*" mask */
+# define _TINYDIR_PATH_EXTRA 2
+#else
+# define _TINYDIR_PATH_EXTRA 0
+#endif
+
+#define _TINYDIR_FILENAME_MAX 256
+
+#if (defined _MSC_VER || defined __MINGW32__)
+#define _TINYDIR_DRIVE_MAX 3
+#endif
+
+#ifdef _MSC_VER
+# define _TINYDIR_FUNC static __inline
+#elif !defined __STDC_VERSION__ || __STDC_VERSION__ < 199901L
+# define _TINYDIR_FUNC static __inline__
+#else
+# define _TINYDIR_FUNC static inline
+#endif
+
+/* readdir_r usage; define TINYDIR_USE_READDIR_R to use it (if supported) */
+#ifdef TINYDIR_USE_READDIR_R
+
+/* readdir_r is a POSIX-only function, and may not be available under various
+ * environments/settings, e.g. MinGW. Use readdir fallback */
+#if _POSIX_C_SOURCE >= 1 || _XOPEN_SOURCE || _BSD_SOURCE || _SVID_SOURCE ||\
+	_POSIX_SOURCE
+# define _TINYDIR_HAS_READDIR_R
+#endif
+#if _POSIX_C_SOURCE >= 200112L
+# define _TINYDIR_HAS_FPATHCONF
+# include <unistd.h>
+#endif
+#if _BSD_SOURCE || _SVID_SOURCE || \
+	(_POSIX_C_SOURCE >= 200809L || _XOPEN_SOURCE >= 700)
+# define _TINYDIR_HAS_DIRFD
+# include <sys/types.h>
+#endif
+#if defined _TINYDIR_HAS_FPATHCONF && defined _TINYDIR_HAS_DIRFD &&\
+	defined _PC_NAME_MAX
+# define _TINYDIR_USE_FPATHCONF
+#endif
+#if defined __MINGW32__ || !defined _TINYDIR_HAS_READDIR_R ||\
+	!(defined _TINYDIR_USE_FPATHCONF || defined NAME_MAX)
+# define _TINYDIR_USE_READDIR
+#endif
+
+/* Use readdir by default */
+#else
+# define _TINYDIR_USE_READDIR
+#endif
+
+/* MINGW32 has two versions of dirent, ASCII and UNICODE*/
+#ifndef _MSC_VER
+#if (defined __MINGW32__) && (defined _UNICODE)
+#define _TINYDIR_DIR _WDIR
+#define _tinydir_dirent _wdirent
+#define _tinydir_opendir _wopendir
+#define _tinydir_readdir _wreaddir
+#define _tinydir_closedir _wclosedir
+#else
+#define _TINYDIR_DIR DIR
+#define _tinydir_dirent dirent
+#define _tinydir_opendir opendir
+#define _tinydir_readdir readdir
+#define _tinydir_closedir closedir
+#endif
+#endif
+
+/* Allow user to use a custom allocator by defining _TINYDIR_MALLOC and _TINYDIR_FREE. */
+#if    defined(_TINYDIR_MALLOC) &&  defined(_TINYDIR_FREE)
+#elif !defined(_TINYDIR_MALLOC) && !defined(_TINYDIR_FREE)
+#else
+#error "Either define both alloc and free or none of them!"
+#endif
+
+#if !defined(_TINYDIR_MALLOC)
+	#define _TINYDIR_MALLOC(_size) malloc(_size)
+	#define _TINYDIR_FREE(_ptr)    free(_ptr)
+#endif /* !defined(_TINYDIR_MALLOC) */
+
+typedef struct tinydir_file
+{
+	_tinydir_char_t path[_TINYDIR_PATH_MAX];
+	_tinydir_char_t name[_TINYDIR_FILENAME_MAX];
+	_tinydir_char_t *extension;
+	int is_dir;
+	int is_reg;
+
+#ifndef _MSC_VER
+#ifdef __MINGW32__
+	struct _stat _s;
+#else
+	struct stat _s;
+#endif
+#endif
+} tinydir_file;
+
+typedef struct tinydir_dir
+{
+	_tinydir_char_t path[_TINYDIR_PATH_MAX];
+	int has_next;
+	size_t n_files;
+
+	tinydir_file *_files;
+#ifdef _MSC_VER
+	HANDLE _h;
+	WIN32_FIND_DATA _f;
+#else
+	_TINYDIR_DIR *_d;
+	struct _tinydir_dirent *_e;
+#ifndef _TINYDIR_USE_READDIR
+	struct _tinydir_dirent *_ep;
+#endif
+#endif
+} tinydir_dir;
+
+
+/* declarations */
+
+_TINYDIR_FUNC
+int tinydir_open(tinydir_dir *dir, const _tinydir_char_t *path);
+_TINYDIR_FUNC
+int tinydir_open_sorted(tinydir_dir *dir, const _tinydir_char_t *path);
+_TINYDIR_FUNC
+void tinydir_close(tinydir_dir *dir);
+
+_TINYDIR_FUNC
+int tinydir_next(tinydir_dir *dir);
+_TINYDIR_FUNC
+int tinydir_readfile(const tinydir_dir *dir, tinydir_file *file);
+_TINYDIR_FUNC
+int tinydir_readfile_n(const tinydir_dir *dir, tinydir_file *file, size_t i);
+_TINYDIR_FUNC
+int tinydir_open_subdir_n(tinydir_dir *dir, size_t i);
+
+_TINYDIR_FUNC
+int tinydir_file_open(tinydir_file *file, const _tinydir_char_t *path);
+_TINYDIR_FUNC
+void _tinydir_get_ext(tinydir_file *file);
+_TINYDIR_FUNC
+int _tinydir_file_cmp(const void *a, const void *b);
+#ifndef _MSC_VER
+#ifndef _TINYDIR_USE_READDIR
+_TINYDIR_FUNC
+size_t _tinydir_dirent_buf_size(_TINYDIR_DIR *dirp);
+#endif
+#endif
+
+
+/* definitions*/
+
+_TINYDIR_FUNC
+int tinydir_open(tinydir_dir *dir, const _tinydir_char_t *path)
+{
+#ifndef _MSC_VER
+#ifndef _TINYDIR_USE_READDIR
+	int error;
+	int size;	/* using int size */
+#endif
+#else
+	_tinydir_char_t path_buf[_TINYDIR_PATH_MAX];
+#endif
+	_tinydir_char_t *pathp;
+
+	if (dir == NULL || path == NULL || _tinydir_strlen(path) == 0)
+	{
+		errno = EINVAL;
+		return -1;
+	}
+	if (_tinydir_strlen(path) + _TINYDIR_PATH_EXTRA >= _TINYDIR_PATH_MAX)
+	{
+		errno = ENAMETOOLONG;
+		return -1;
+	}
+
+	/* initialise dir */
+	dir->_files = NULL;
+#ifdef _MSC_VER
+	dir->_h = INVALID_HANDLE_VALUE;
+#else
+	dir->_d = NULL;
+#ifndef _TINYDIR_USE_READDIR
+	dir->_ep = NULL;
+#endif
+#endif
+	tinydir_close(dir);
+
+	_tinydir_strcpy(dir->path, path);
+	/* Remove trailing slashes */
+	pathp = &dir->path[_tinydir_strlen(dir->path) - 1];
+	while (pathp != dir->path && (*pathp == TINYDIR_STRING('\\') || *pathp == TINYDIR_STRING('/')))
+	{
+		*pathp = TINYDIR_STRING('\0');
+		pathp++;
+	}
+#ifdef _MSC_VER
+	_tinydir_strcpy(path_buf, dir->path);
+	_tinydir_strcat(path_buf, TINYDIR_STRING("\\*"));
+	dir->_h = FindFirstFile(path_buf, &dir->_f);
+	if (dir->_h == INVALID_HANDLE_VALUE)
+	{
+		errno = ENOENT;
+#else
+	dir->_d = _tinydir_opendir(path);
+	if (dir->_d == NULL)
+	{
+#endif
+		goto bail;
+	}
+
+	/* read first file */
+	dir->has_next = 1;
+#ifndef _MSC_VER
+#ifdef _TINYDIR_USE_READDIR
+	dir->_e = _tinydir_readdir(dir->_d);
+#else
+	/* allocate dirent buffer for readdir_r */
+	size = _tinydir_dirent_buf_size(dir->_d); /* conversion to int */
+	if (size == -1) return -1;
+	dir->_ep = (struct _tinydir_dirent*)_TINYDIR_MALLOC(size);
+	if (dir->_ep == NULL) return -1;
+
+	error = readdir_r(dir->_d, dir->_ep, &dir->_e);
+	if (error != 0) return -1;
+#endif
+	if (dir->_e == NULL)
+	{
+		dir->has_next = 0;
+	}
+#endif
+
+	return 0;
+
+bail:
+	tinydir_close(dir);
+	return -1;
+}
+
+_TINYDIR_FUNC
+int tinydir_open_sorted(tinydir_dir *dir, const _tinydir_char_t *path)
+{
+	/* Count the number of files first, to pre-allocate the files array */
+	size_t n_files = 0;
+	if (tinydir_open(dir, path) == -1)
+	{
+		return -1;
+	}
+	while (dir->has_next)
+	{
+		n_files++;
+		if (tinydir_next(dir) == -1)
+		{
+			goto bail;
+		}
+	}
+	tinydir_close(dir);
+
+	if (tinydir_open(dir, path) == -1)
+	{
+		return -1;
+	}
+
+	dir->n_files = 0;
+	dir->_files = (tinydir_file *)_TINYDIR_MALLOC(sizeof *dir->_files * n_files);
+	if (dir->_files == NULL)
+	{
+		goto bail;
+	}
+	while (dir->has_next)
+	{
+		tinydir_file *p_file;
+		dir->n_files++;
+
+		p_file = &dir->_files[dir->n_files - 1];
+		if (tinydir_readfile(dir, p_file) == -1)
+		{
+			goto bail;
+		}
+
+		if (tinydir_next(dir) == -1)
+		{
+			goto bail;
+		}
+
+		/* Just in case the number of files has changed between the first and
+		second reads, terminate without writing into unallocated memory */
+		if (dir->n_files == n_files)
+		{
+			break;
+		}
+	}
+
+	qsort(dir->_files, dir->n_files, sizeof(tinydir_file), _tinydir_file_cmp);
+
+	return 0;
+
+bail:
+	tinydir_close(dir);
+	return -1;
+}
+
+_TINYDIR_FUNC
+void tinydir_close(tinydir_dir *dir)
+{
+	if (dir == NULL)
+	{
+		return;
+	}
+
+	memset(dir->path, 0, sizeof(dir->path));
+	dir->has_next = 0;
+	dir->n_files = 0;
+	_TINYDIR_FREE(dir->_files);
+	dir->_files = NULL;
+#ifdef _MSC_VER
+	if (dir->_h != INVALID_HANDLE_VALUE)
+	{
+		FindClose(dir->_h);
+	}
+	dir->_h = INVALID_HANDLE_VALUE;
+#else
+	if (dir->_d)
+	{
+		_tinydir_closedir(dir->_d);
+	}
+	dir->_d = NULL;
+	dir->_e = NULL;
+#ifndef _TINYDIR_USE_READDIR
+	_TINYDIR_FREE(dir->_ep);
+	dir->_ep = NULL;
+#endif
+#endif
+}
+
+_TINYDIR_FUNC
+int tinydir_next(tinydir_dir *dir)
+{
+	if (dir == NULL)
+	{
+		errno = EINVAL;
+		return -1;
+	}
+	if (!dir->has_next)
+	{
+		errno = ENOENT;
+		return -1;
+	}
+
+#ifdef _MSC_VER
+	if (FindNextFile(dir->_h, &dir->_f) == 0)
+#else
+#ifdef _TINYDIR_USE_READDIR
+	dir->_e = _tinydir_readdir(dir->_d);
+#else
+	if (dir->_ep == NULL)
+	{
+		return -1;
+	}
+	if (readdir_r(dir->_d, dir->_ep, &dir->_e) != 0)
+	{
+		return -1;
+	}
+#endif
+	if (dir->_e == NULL)
+#endif
+	{
+		dir->has_next = 0;
+#ifdef _MSC_VER
+		if (GetLastError() != ERROR_SUCCESS &&
+			GetLastError() != ERROR_NO_MORE_FILES)
+		{
+			tinydir_close(dir);
+			errno = EIO;
+			return -1;
+		}
+#endif
+	}
+
+	return 0;
+}
+
+_TINYDIR_FUNC
+int tinydir_readfile(const tinydir_dir *dir, tinydir_file *file)
+{
+	if (dir == NULL || file == NULL)
+	{
+		errno = EINVAL;
+		return -1;
+	}
+#ifdef _MSC_VER
+	if (dir->_h == INVALID_HANDLE_VALUE)
+#else
+	if (dir->_e == NULL)
+#endif
+	{
+		errno = ENOENT;
+		return -1;
+	}
+	if (_tinydir_strlen(dir->path) +
+		_tinydir_strlen(
+#ifdef _MSC_VER
+			dir->_f.cFileName
+#else
+			dir->_e->d_name
+#endif
+		) + 1 + _TINYDIR_PATH_EXTRA >=
+		_TINYDIR_PATH_MAX)
+	{
+		/* the path for the file will be too long */
+		errno = ENAMETOOLONG;
+		return -1;
+	}
+	if (_tinydir_strlen(
+#ifdef _MSC_VER
+			dir->_f.cFileName
+#else
+			dir->_e->d_name
+#endif
+		) >= _TINYDIR_FILENAME_MAX)
+	{
+		errno = ENAMETOOLONG;
+		return -1;
+	}
+
+	_tinydir_strcpy(file->path, dir->path);
+	_tinydir_strcat(file->path, TINYDIR_STRING("/"));
+	_tinydir_strcpy(file->name,
+#ifdef _MSC_VER
+		dir->_f.cFileName
+#else
+		dir->_e->d_name
+#endif
+	);
+	_tinydir_strcat(file->path, file->name);
+#ifndef _MSC_VER
+#ifdef __MINGW32__
+	if (_tstat(
+#else
+	if (stat(
+#endif
+		file->path, &file->_s) == -1)
+	{
+		return -1;
+	}
+#endif
+	_tinydir_get_ext(file);
+
+	file->is_dir =
+#ifdef _MSC_VER
+		!!(dir->_f.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY);
+#else
+		S_ISDIR(file->_s.st_mode);
+#endif
+	file->is_reg =
+#ifdef _MSC_VER
+		!!(dir->_f.dwFileAttributes & FILE_ATTRIBUTE_NORMAL) ||
+		(
+			!(dir->_f.dwFileAttributes & FILE_ATTRIBUTE_DEVICE) &&
+			!(dir->_f.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) &&
+			!(dir->_f.dwFileAttributes & FILE_ATTRIBUTE_ENCRYPTED) &&
+#ifdef FILE_ATTRIBUTE_INTEGRITY_STREAM
+			!(dir->_f.dwFileAttributes & FILE_ATTRIBUTE_INTEGRITY_STREAM) &&
+#endif
+#ifdef FILE_ATTRIBUTE_NO_SCRUB_DATA
+			!(dir->_f.dwFileAttributes & FILE_ATTRIBUTE_NO_SCRUB_DATA) &&
+#endif
+			!(dir->_f.dwFileAttributes & FILE_ATTRIBUTE_OFFLINE) &&
+			!(dir->_f.dwFileAttributes & FILE_ATTRIBUTE_TEMPORARY));
+#else
+		S_ISREG(file->_s.st_mode);
+#endif
+
+	return 0;
+}
+
+_TINYDIR_FUNC
+int tinydir_readfile_n(const tinydir_dir *dir, tinydir_file *file, size_t i)
+{
+	if (dir == NULL || file == NULL)
+	{
+		errno = EINVAL;
+		return -1;
+	}
+	if (i >= dir->n_files)
+	{
+		errno = ENOENT;
+		return -1;
+	}
+
+	memcpy(file, &dir->_files[i], sizeof(tinydir_file));
+	_tinydir_get_ext(file);
+
+	return 0;
+}
+
+_TINYDIR_FUNC
+int tinydir_open_subdir_n(tinydir_dir *dir, size_t i)
+{
+	_tinydir_char_t path[_TINYDIR_PATH_MAX];
+	if (dir == NULL)
+	{
+		errno = EINVAL;
+		return -1;
+	}
+	if (i >= dir->n_files || !dir->_files[i].is_dir)
+	{
+		errno = ENOENT;
+		return -1;
+	}
+
+	_tinydir_strcpy(path, dir->_files[i].path);
+	tinydir_close(dir);
+	if (tinydir_open_sorted(dir, path) == -1)
+	{
+		return -1;
+	}
+
+	return 0;
+}
+
+/* Open a single file given its path */
+_TINYDIR_FUNC
+int tinydir_file_open(tinydir_file *file, const _tinydir_char_t *path)
+{
+	tinydir_dir dir;
+	int result = 0;
+	int found = 0;
+	_tinydir_char_t dir_name_buf[_TINYDIR_PATH_MAX];
+	_tinydir_char_t file_name_buf[_TINYDIR_FILENAME_MAX];
+	_tinydir_char_t *dir_name;
+	_tinydir_char_t *base_name;
+#if (defined _MSC_VER || defined __MINGW32__)
+	_tinydir_char_t drive_buf[_TINYDIR_DRIVE_MAX];
+	_tinydir_char_t ext_buf[_TINYDIR_FILENAME_MAX];
+#endif
+
+	if (file == NULL || path == NULL || _tinydir_strlen(path) == 0)
+	{
+		errno = EINVAL;
+		return -1;
+	}
+	if (_tinydir_strlen(path) + _TINYDIR_PATH_EXTRA >= _TINYDIR_PATH_MAX)
+	{
+		errno = ENAMETOOLONG;
+		return -1;
+	}
+
+	/* Get the parent path */
+#if (defined _MSC_VER || defined __MINGW32__)
+#if ((defined _MSC_VER) && (_MSC_VER >= 1400))
+		_tsplitpath_s(
+			path,
+			drive_buf, _TINYDIR_DRIVE_MAX,
+			dir_name_buf, _TINYDIR_FILENAME_MAX,
+			file_name_buf, _TINYDIR_FILENAME_MAX,
+			ext_buf, _TINYDIR_FILENAME_MAX);
+#else
+		_tsplitpath(
+			path,
+			drive_buf,
+			dir_name_buf,
+			file_name_buf,
+			ext_buf);
+#endif
+
+/* _splitpath_s not work fine with only filename and widechar support */
+#ifdef _UNICODE
+		if (drive_buf[0] == L'\xFEFE')
+			drive_buf[0] = '\0';
+		if (dir_name_buf[0] == L'\xFEFE')
+			dir_name_buf[0] = '\0';
+#endif
+
+	if (errno)
+	{
+		errno = EINVAL;
+		return -1;
+	}
+	/* Emulate the behavior of dirname by returning "." for dir name if it's
+	empty */
+	if (drive_buf[0] == '\0' && dir_name_buf[0] == '\0')
+	{
+		_tinydir_strcpy(dir_name_buf, TINYDIR_STRING("."));
+	}
+	/* Concatenate the drive letter and dir name to form full dir name */
+	_tinydir_strcat(drive_buf, dir_name_buf);
+	dir_name = drive_buf;
+	/* Concatenate the file name and extension to form base name */
+	_tinydir_strcat(file_name_buf, ext_buf);
+	base_name = file_name_buf;
+#else
+	_tinydir_strcpy(dir_name_buf, path);
+	dir_name = dirname(dir_name_buf);
+	_tinydir_strcpy(file_name_buf, path);
+	base_name =basename(file_name_buf);
+#endif
+
+	/* Open the parent directory */
+	if (tinydir_open(&dir, dir_name) == -1)
+	{
+		return -1;
+	}
+
+	/* Read through the parent directory and look for the file */
+	while (dir.has_next)
+	{
+		if (tinydir_readfile(&dir, file) == -1)
+		{
+			result = -1;
+			goto bail;
+		}
+		if (_tinydir_strcmp(file->name, base_name) == 0)
+		{
+			/* File found */
+			found = 1;
+			break;
+		}
+		tinydir_next(&dir);
+	}
+	if (!found)
+	{
+		result = -1;
+		errno = ENOENT;
+	}
+
+bail:
+	tinydir_close(&dir);
+	return result;
+}
+
+_TINYDIR_FUNC
+void _tinydir_get_ext(tinydir_file *file)
+{
+	_tinydir_char_t *period = _tinydir_strrchr(file->name, TINYDIR_STRING('.'));
+	if (period == NULL)
+	{
+		file->extension = &(file->name[_tinydir_strlen(file->name)]);
+	}
+	else
+	{
+		file->extension = period + 1;
+	}
+}
+
+_TINYDIR_FUNC
+int _tinydir_file_cmp(const void *a, const void *b)
+{
+	const tinydir_file *fa = (const tinydir_file *)a;
+	const tinydir_file *fb = (const tinydir_file *)b;
+	if (fa->is_dir != fb->is_dir)
+	{
+		return -(fa->is_dir - fb->is_dir);
+	}
+	return _tinydir_strncmp(fa->name, fb->name, _TINYDIR_FILENAME_MAX);
+}
+
+#ifndef _MSC_VER
+#ifndef _TINYDIR_USE_READDIR
+/*
+The following authored by Ben Hutchings <ben@decadent.org.uk>
+from https://womble.decadent.org.uk/readdir_r-advisory.html
+*/
+/* Calculate the required buffer size (in bytes) for directory      *
+* entries read from the given directory handle.  Return -1 if this  *
+* this cannot be done.                                              *
+*                                                                   *
+* This code does not trust values of NAME_MAX that are less than    *
+* 255, since some systems (including at least HP-UX) incorrectly    *
+* define it to be a smaller value.                                  */
+_TINYDIR_FUNC
+size_t _tinydir_dirent_buf_size(_TINYDIR_DIR *dirp)
+{
+	long name_max;
+	size_t name_end;
+	/* parameter may be unused */
+	(void)dirp;
+
+#if defined _TINYDIR_USE_FPATHCONF
+	name_max = fpathconf(dirfd(dirp), _PC_NAME_MAX);
+	if (name_max == -1)
+#if defined(NAME_MAX)
+		name_max = (NAME_MAX > 255) ? NAME_MAX : 255;
+#else
+		return (size_t)(-1);
+#endif
+#elif defined(NAME_MAX)
+ 	name_max = (NAME_MAX > 255) ? NAME_MAX : 255;
+#else
+#error "buffer size for readdir_r cannot be determined"
+#endif
+	name_end = (size_t)offsetof(struct _tinydir_dirent, d_name) + name_max + 1;
+	return (name_end > sizeof(struct _tinydir_dirent) ?
+		name_end : sizeof(struct _tinydir_dirent));
+}
+#endif
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+# if defined (_MSC_VER)
+# pragma warning(pop)
+# endif
+
+#endif

utils.cc

@@ -0,0 +1,68 @@
+#include "utils.h"
+
+#include <fstream>
+
+#include "tinydir.h"
+
+std::vector<std::string> GetFilesInFolder(std::string folder) {
+  std::vector<std::string> result;
+
+  tinydir_dir dir;
+  if (tinydir_open(&dir, folder.c_str()) == -1) {
+    perror("Error opening file");
+    goto bail;
+  }
+
+  while (dir.has_next) {
+    tinydir_file file;
+    if (tinydir_readfile(&dir, &file) == -1) {
+      perror("Error getting file");
+      goto bail;
+    }
+
+    std::string full_path = folder + "/" + file.name;
+    if (file.is_dir) {
+      if (strcmp(file.name, ".") != 0 && strcmp(file.name, "..") != 0) {
+        for (std::string nested_file : GetFilesInFolder(full_path))
+          result.push_back(nested_file);
+      }
+    }
+    else {
+      result.push_back(full_path);
+    }
+
+    if (tinydir_next(&dir) == -1) {
+      perror("Error getting next file");
+      goto bail;
+    }
+  }
+
+bail:
+  tinydir_close(&dir);
+  return result;
+}
+
+std::vector<std::string> ReadLines(std::string filename) {
+  std::vector<std::string> result;
+
+  std::ifstream input(filename);
+  for (std::string line; getline(input, line); )
+    result.push_back(line);
+
+  return result;
+}
+
+void ParseTestExpectation(std::string filename, std::vector<std::string>* expected_output) {
+  bool in_output = false;
+
+  for (std::string line : ReadLines(filename)) {
+    if (line == "*/")
+      break;
+
+    if (in_output)
+      expected_output->push_back(line);
+
+    if (line == "OUTPUT:")
+      in_output = true;
+  }
+}

utils.h

@@ -0,0 +1,8 @@
+#pragma once
+
+#include <string>
+#include <vector>
+
+std::vector<std::string> GetFilesInFolder(std::string folder);
+std::vector<std::string> ReadLines(std::string filename);
+void ParseTestExpectation(std::string filename, std::vector<std::string>* expected_output);