---

ACE_Svc_Conf_Lexer_Guard Class Reference

"Guard" that ensures lexer buffer switching is exception-safe. More...

#include <Svc_Conf_Lexer_Guard.h>

List of all members.

Public Methods
	ACE_Svc_Conf_Lexer_Guard (ACE_Svc_Conf_Param *param)
	Constructor. More...
	~ACE_Svc_Conf_Lexer_Guard (void)
	Destructor. More...
Private Attributes
ace_yy_buffer_state *	buffer_
	Lexer buffer that corresponds to the current Service Configurator file/direct scan. More...

---

Detailed Description

"Guard" that ensures lexer buffer switching is exception-safe.

Buffers are switched, if necessary, each time a token is parsed/scanned. The buffer switching must be synchronized externally. This class performs no synchronization.

Note:

Note that allocation/deallocation is done once during the processing of a service configurator directive. Memory managements is done at a higher level, not in this class. This is necessary to prevent an allocation/deallocation from occurring when parsing/scanning each token.

Definition at line 45 of file Svc_Conf_Lexer_Guard.h.

---

Constructor & Destructor Documentation

ACE_Svc_Conf_Lexer_Guard::ACE_Svc_Conf_Lexer_Guard (  ACE_Svc_Conf_Param *    param )

Constructor. Switches buffers, if necessary, when token scanning first begins. Allocation of the buffer will also occur if one has not already been allocated. This operation effectively pushes a buffer on to a stack. Definition at line 14 of file Svc_Conf_Lexer_Guard.cpp. References ace_yy_push_buffer, buffer_, and ACE_Svc_Conf_Param::SVC_CONF_FILE. : buffer_ (0) { // External synchronization is required. // Note that allocation/deallocation is done once during the // processing of a service configurator directive. Memory // managements is done at a higher level, not in this class. This // is necessary to prevent an allocation/deallocation from occurring // when parsing/scanning each token. if (param->type == ACE_Svc_Conf_Param::SVC_CONF_FILE) ::ace_yy_push_buffer (param->source.file, param->buffer); else ::ace_yy_push_buffer (param->source.directive, param->buffer); this->buffer_ = param->buffer; }

ACE_Svc_Conf_Lexer_Guard::~ACE_Svc_Conf_Lexer_Guard (  void    )

Destructor. Switches buffers, if necessary when token scanning completes. No buffer deallocation occurs here. Buffers are deallocated when parsing of the entire directive is done, not when scanning of a single token is done. This operation effective pops a buffer off of a stack. Definition at line 34 of file Svc_Conf_Lexer_Guard.cpp. References buffer_. { // External synchronization is required. ::ace_yy_pop_buffer (this->buffer_); }

---

Member Data Documentation

ace_yy_buffer_state* ACE_Svc_Conf_Lexer_Guard::buffer_ [private]

Lexer buffer that corresponds to the current Service Configurator file/direct scan. Definition at line 72 of file Svc_Conf_Lexer_Guard.h. Referenced by ACE_Svc_Conf_Lexer_Guard, and ~ACE_Svc_Conf_Lexer_Guard.

---

The documentation for this class was generated from the following files:

• Svc_Conf_Lexer_Guard.h
• Svc_Conf_Lexer_Guard.cpp

---