TAO_Lex_String_Input Class Reference

Have Lex read from a string and not from stdin. Essentially, the interpreter needs to call yylex() until EOF, and call TAO_Lex_String_Input::reset() with the new string, prior to calling yyparse. More...

#include <Interpreter.h>

List of all members.

Static Public Member Functions
static void	reset (char *input_string)
	Reset the lex input.
static int	copy_into (char *buf, int max_size)
	Method lex will call to read from the input string.
Static Private Attributes
static char *	string_ = 0
	Pointers to keep track of the input string.
static char *	current_ = 0
static char *	end_ = 0

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Detailed Description

Have Lex read from a string and not from stdin. Essentially, the interpreter needs to call yylex() until EOF, and call TAO_Lex_String_Input::reset() with the new string, prior to calling yyparse.

Definition at line 78 of file Interpreter.h.

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Member Function Documentation

int TAO_Lex_String_Input::copy_into	(	char *	buf,
		int	max_size
	)			[static]

Method lex will call to read from the input string.

Definition at line 76 of file Interpreter.cpp.

References current_, end_, and ACE_OS::memcpy().

{
  int chars_left = static_cast<int> (TAO_Lex_String_Input::end_ -
                                     TAO_Lex_String_Input::current_);
  int n = max_size > chars_left ? chars_left : max_size;

  if (n > 0)
    {
      ACE_OS::memcpy (buf,
                      TAO_Lex_String_Input::current_,
                      n);
      TAO_Lex_String_Input::current_ += n;
    }

  return n;
}

void TAO_Lex_String_Input::reset

(

char *

input_string

)

[static]

Reset the lex input.

Definition at line 94 of file Interpreter.cpp.

References current_, end_, string_, and ACE_OS::strlen().

Referenced by TAO_Interpreter::build_tree().

{
  TAO_Lex_String_Input::string_ = input_string;
  TAO_Lex_String_Input::current_ = input_string;
  TAO_Lex_String_Input::end_ = input_string +
    ACE_OS::strlen (TAO_Lex_String_Input::string_);
}

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Member Data Documentation

char * TAO_Lex_String_Input::current_ = 0 [static, private]

Definition at line 91 of file Interpreter.h.

Referenced by copy_into(), and reset().

char * TAO_Lex_String_Input::end_ = 0 [static, private]

Definition at line 92 of file Interpreter.h.

Referenced by copy_into(), and reset().

char * TAO_Lex_String_Input::string_ = 0 [static, private]

Pointers to keep track of the input string.

Definition at line 90 of file Interpreter.h.

Referenced by reset().

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

• Interpreter.h
• Interpreter.cpp

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