JLANG::JCppFacet Class Reference

Facet class to specify parsing of a C[++] variable name. More...

#include <JCppFacet.hh>

Inheritance diagram for JLANG::JCppFacet:

Public Types
typedef std::istreambuf_iterator< char, std::char_traits< char > >	istreambuf_iterator
typedef std::ostreambuf_iterator< char, std::char_traits< char > >	ostreambuf_iterator

Public Member Functions
	JCppFacet ()
	Constructor.
virtual JCppFacet *	clone () const override
	Clone this facet.
istreambuf_iterator	get (const istreambuf_iterator __begin, const istreambuf_iterator __end, const std::ios_base &format, std::ios_base::iostate &result, std::string &buffer) const
	Get string.
ostreambuf_iterator	put (ostreambuf_iterator out, const std::ios_base &format, const char c, const std::string &buffer) const
	Put string.
std::istream &	ignore (std::istream &in) const
	Ignore characters until next end of line.
std::istream &	getline (std::istream &in, std::string &buffer) const
	Read characters until next end of line.

Static Public Member Functions
static bool	is_eol (const char c)
static bool	is_begin_single_line_comment (const char c1, const char c2)
static bool	is_begin_multi_line_comment (const char c1, const char c2)
static bool	is_end_single_line_comment (const char c1)
static bool	is_end_multi_line_comment (const char c1, const char c2)
static int	getIndex ()
	Get index for stream associated facet data.

Static Public Attributes
static std::locale::id	id

Protected Member Functions
virtual istreambuf_iterator	do_get (const istreambuf_iterator __begin, const istreambuf_iterator __end, const std::ios_base &format, std::ios_base::iostate &result, std::string &buffer) const override
	Get string.
virtual ostreambuf_iterator	do_put (ostreambuf_iterator out, const std::ios_base &format, const char c, const std::string &buffer) const override
	Put string.
virtual istreambuf_iterator	do_ignore (const istreambuf_iterator __begin, const istreambuf_iterator __end) const override
	Ignore white space and end of line characters.
virtual istreambuf_iterator	do_ignore_single_line_comment (const istreambuf_iterator __begin, const istreambuf_iterator __end) const
	Ignore characters until end of line.
virtual istreambuf_iterator	do_ignore_multi_line_comment (const istreambuf_iterator __begin, const istreambuf_iterator __end) const
	Ignore characters until next end of comment.
virtual istreambuf_iterator	do_getline (const istreambuf_iterator __begin, const istreambuf_iterator __end, std::ios_base::iostate &result, std::string &buffer) const
	Read string.

Private Member Functions
	JCppFacet (const JCppFacet &)
void	operator= (const JCppFacet &)

Detailed Description

Facet class to specify parsing of a C[++] variable name.

Definition at line 27 of file JCppFacet.hh.

Member Typedef Documentation

istreambuf_iterator

std::istreambuf_iterator<char, std::char_traits<char> > JLANG::JStringFacet::istreambuf_iterator

inherited

Definition at line 34 of file JStringFacet.hh.

ostreambuf_iterator

std::ostreambuf_iterator<char, std::char_traits<char> > JLANG::JStringFacet::ostreambuf_iterator

inherited

Definition at line 35 of file JStringFacet.hh.

Constructor & Destructor Documentation

JCppFacet() [1/2]

JLANG::JCppFacet::JCppFacet ( )

inline

Constructor.

Definition at line 34 of file JCppFacet.hh.

    {}

JCppFacet() [2/2]

JLANG::JCppFacet::JCppFacet ( const JCppFacet & )

private

Member Function Documentation

clone()

virtual JCppFacet * JLANG::JCppFacet::clone ( ) const

inlineoverridevirtual

Clone this facet.

Returns

pointer to newly created facet

Reimplemented from JLANG::JStringFacet.

Definition at line 43 of file JCppFacet.hh.

    {
      return new JCppFacet();
    }

is_eol()

static bool JLANG::JCppFacet::is_eol ( const char c )

inlinestatic

Definition at line 49 of file JCppFacet.hh.

{ return c == ';'; }

is_begin_single_line_comment()

static bool JLANG::JCppFacet::is_begin_single_line_comment ( const char c1, const char c2 )

inlinestatic

Definition at line 51 of file JCppFacet.hh.

{ return c1 == '/' && c2 == '/'; }

is_begin_multi_line_comment()

static bool JLANG::JCppFacet::is_begin_multi_line_comment ( const char c1, const char c2 )

inlinestatic

Definition at line 52 of file JCppFacet.hh.

{ return c1 == '/' && c2 == '*'; }

is_end_single_line_comment()

static bool JLANG::JCppFacet::is_end_single_line_comment ( const char c1 )

inlinestatic

Definition at line 54 of file JCppFacet.hh.

{ return c1 == '\n'; }

is_end_multi_line_comment()

static bool JLANG::JCppFacet::is_end_multi_line_comment ( const char c1, const char c2 )

inlinestatic

Definition at line 55 of file JCppFacet.hh.

{ return c1 == '*' && c2 == '/'; }

get()

istreambuf_iterator JLANG::JCppFacet::get ( const istreambuf_iterator __begin, const istreambuf_iterator __end, const std::ios_base & format, std::ios_base::iostate & result, std::string & buffer ) const

inline

Get string.

Parameters

__begin	begin position of input stream
__end	end position of input stream
format	format
result	status after input operation
buffer	output string

Returns

position of input stream

Definition at line 68 of file JCppFacet.hh.

    {
      return do_get(__begin, __end, format, result, buffer);
    }

put()

ostreambuf_iterator JLANG::JCppFacet::put ( ostreambuf_iterator out, const std::ios_base & format, const char c, const std::string & buffer ) const

inline

Put string.

Parameters

out	begin position of output stream
format	format
c	fill character
buffer	input string

Returns

position of output stream buffer

Definition at line 87 of file JCppFacet.hh.

    {
      return do_put(out, format, c, buffer);
    }

do_get()

virtual istreambuf_iterator JLANG::JCppFacet::do_get ( const istreambuf_iterator __begin, const istreambuf_iterator __end, const std::ios_base & format, std::ios_base::iostate & result, std::string & buffer ) const

inlineoverrideprotectedvirtual

Get string.

Parameters

__begin	begin position of input stream
__end	end position of input stream
format	format
result	status after input operation
buffer	output string

Returns

position of input stream

Reimplemented from JLANG::JStringFacet.

Definition at line 107 of file JCppFacet.hh.

    {
      using namespace std;
 
      result = (ios_base::iostate) 0;  // reset I/O status
 
      streamsize n = format.width();   // number of characters to read
 
      if (n == 0) {
        n = numeric_limits<streamsize>::max();
      }
 
      istreambuf_iterator i = __begin;
 
      if (i == __end || (i = do_ignore(i, __end)) == __end) {
 
        result |= ios_base::failbit;    
        result |= ios_base::eofbit;
 
      } else {
 
        char c = *i;
 
        for (++i; i != __end; c = *i, ++i) {
 
          // skip comment line(s)
 
          if      (is_begin_single_line_comment(c,*i))
            i = do_ignore_single_line_comment(i, __end);
          else if (is_begin_multi_line_comment (c,*i))
            i = do_ignore_multi_line_comment (i, __end);
          else if (c == '_' || isalpha(c))                  // first character must be letter or underscore
            break;
 
          i = do_ignore(i, __end);
        }
 
        if (i == __end) {
 
          result |= ios_base::failbit;  
          result |= ios_base::eofbit;
 
        } else {
 
          buffer.clear();
          buffer.push_back(c);
          
          for (--n; i != __end && n != 0 && (*i == '_' ||
                                             isalnum(*i));  // following characters may also be digits
               ++i, --n) {
            buffer.push_back(*i);
          }
          
          if (i == __end) {
            result |= ios_base::eofbit;
          }
        }
      }
 
      return i;
    }

do_put()

virtual ostreambuf_iterator JLANG::JCppFacet::do_put ( ostreambuf_iterator out, const std::ios_base & format, const char c, const std::string & buffer ) const

inlineoverrideprotectedvirtual

Put string.

Parameters

out	begin position of output stream
format	format
c	fill character
buffer	input string

Returns

current position of output stream

Reimplemented from JLANG::JStringFacet.

Definition at line 183 of file JCppFacet.hh.

    {
      using namespace std;
 
      if (format.flags() & ios_base::right) {
        for (streamsize i = buffer.size(); i < format.width(); ++i, ++out) {
          *out = c;
        }
      }
 
      for (string::const_iterator i = buffer.begin(); i != buffer.end(); ++i, ++out) {
        *out = *i;
      }
        
      if (format.flags() & ios_base::left) {
        for (streamsize i = buffer.size(); i < format.width(); ++i, ++out) {
          *out = c;
        }
      }
 
      return out;
    }

do_ignore()

virtual istreambuf_iterator JLANG::JCppFacet::do_ignore ( const istreambuf_iterator __begin, const istreambuf_iterator __end ) const

inlineoverrideprotectedvirtual

Ignore white space and end of line characters.

Parameters

__begin	begin position of input stream
__end	end position of input stream

Returns

position of input stream

Reimplemented from JLANG::JStringFacet.

Definition at line 217 of file JCppFacet.hh.

    {
      istreambuf_iterator i = __begin;
 
      while (i != __end && (isspace(*i) || is_eol(*i))) {
        ++i;
      }
 
      return i;
    }

do_ignore_single_line_comment()

virtual istreambuf_iterator JLANG::JCppFacet::do_ignore_single_line_comment ( const istreambuf_iterator __begin, const istreambuf_iterator __end ) const

inlineprotectedvirtual

Ignore characters until end of line.

Parameters

__begin	begin position of input stream
__end	end position of input stream

Returns

position of input stream

Definition at line 237 of file JCppFacet.hh.

    {
      istreambuf_iterator i = __begin;
 
      for ( ; i != __end && !is_end_single_line_comment(*i); ++i) {}
 
      if (i != __end) {
        ++i;          // skip end of line
      }
 
      return i;
    }

do_ignore_multi_line_comment()

virtual istreambuf_iterator JLANG::JCppFacet::do_ignore_multi_line_comment ( const istreambuf_iterator __begin, const istreambuf_iterator __end ) const

inlineprotectedvirtual

Ignore characters until next end of comment.

Parameters

__begin	begin position of input stream
__end	end position of input stream

Returns

position of input stream

Definition at line 259 of file JCppFacet.hh.

    {
      istreambuf_iterator i = __begin;
 
      if (i != __end) {
 
        char c = *i;
 
        for (++i; i != __end && !is_end_multi_line_comment(c,*i); c = *i, ++i) {}
 
        if (i != __end) {
          ++i;          // skip end of line
        }
      }
 
      return i;
    }

operator=()

void JLANG::JCppFacet::operator= ( const JCppFacet & )

private

ignore()

std::istream & JLANG::JStringFacet::ignore ( std::istream & in ) const

inlineinherited

Ignore characters until next end of line.

Parameters

in	input stream

Returns

input stream

Definition at line 104 of file JStringFacet.hh.

    {      
      if (do_ignore(in, istreambuf_iterator()) == istreambuf_iterator()) {
        in.setstate(std::ios_base::eofbit);
      }
 
      return in;
    }

getline()

std::istream & JLANG::JStringFacet::getline ( std::istream & in, std::string & buffer ) const

inlineinherited

Read characters until next end of line.

Parameters

in	input stream
buffer	output string

Returns

input stream

Definition at line 121 of file JStringFacet.hh.

    {
      using namespace std;
 
      ios_base::iostate state = in.rdstate();
 
      if (do_getline(in, istreambuf_iterator(), state, buffer) == istreambuf_iterator()) {
        in.setstate(std::ios_base::eofbit);
      }
 
      if (state != ios_base::goodbit && state != ios_base::eofbit) {
        in.setstate(state);
      }
 
      return in;
    }

getIndex()

static int JLANG::JStringFacet::getIndex ( )

inlinestaticinherited

Get index for stream associated facet data.

Returns

index

Definition at line 145 of file JStringFacet.hh.

    {
      static int i = std::ios_base::xalloc();
 
      return i;
    }

do_getline()

virtual istreambuf_iterator JLANG::JStringFacet::do_getline ( const istreambuf_iterator __begin, const istreambuf_iterator __end, std::ios_base::iostate & result, std::string & buffer ) const

inlineprotectedvirtualinherited

Read string.

Parameters

__begin	begin position of input stream
__end	end position of input stream
result	status after input operation
buffer	output string

Returns

position of input stream

Reimplemented in JLANG::JEquationFacet.

Definition at line 275 of file JStringFacet.hh.

    {
      using namespace std;
 
      istreambuf_iterator i = __begin;
 
      if (i == __end) {
 
        result |= ios_base::failbit;    
        result |= ios_base::eofbit;
 
      } else {
 
        buffer.clear();
 
        for ( ; i != __end && *i != '\n'; ++i) {
          buffer.push_back(*i);
        }
 
        if (i != __end) {
          ++i;          // skip end of line
        }
      }
 
      return i;
    }

Member Data Documentation

id

std::locale::id JLANG::JStringFacet::id

staticinherited

Author

mdejong

Definition at line 31 of file JStringFacet.hh.

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

• JCppFacet.hh