include/monitor/config/Parser.h

   1 /**
   2         Aesalon, a tool to visualize a program's behaviour at run-time.
   3         Copyright (C) 2010, Aesalon Development Team.
   4
   5         Aesalon is distributed under the terms of the GNU GPLv3. For more
   6         licensing information, see the file LICENSE included with the distribution.
   7
   8         @file include/monitor/config/Parser.h
   9
  10 */
  11
  12 #ifndef AesalonMonitor_Config_Parser_H
  13 #define AesalonMonitor_Config_Parser_H
  14
  15 #include <iosfwd>
  16
  17 #include "Vault.h"
  18
  19 namespace Monitor {
  20 namespace Config {
  21
  22 class ConcreteVault;
  23
  24 class Parser {
  25 private:
  26         std::ifstream *m_stream;
  27
  28         enum TokenType {
  29                 WORD,
  30                 QUOTED_WORD,
  31                 SYMBOL,
  32                 END_OF_FILE
  33         };
  34 public:
  35         /** Parses a single configuration file.
  36                 @note Assumes @a configFile is an absolute path.
  37         */
  38         void parse(ConcreteVault *vault, const std::string &configFile);
  39         /** Parses a directory's worth of module configuration files.
  40                 @note Assumes @a directory is absolute.
  41         */
  42         void parseDirectory(ConcreteVault *vault, const std::string &directory);
  43 private:
  44         void openFile(const std::string &configFile);
  45         std::string nextToken(TokenType &type);
  46         std::string expectNextToken(TokenType expected);
  47         void expectNextSymbol(const std::string &symbol);
  48         void skipWhitespace();
  49         void closeFile();
  50
  51         const char *nameOf(TokenType type) const;
  52 };
  53
  54 } // namespace Config
  55 } // namespace Monitor
  56
  57 #endif