fmtsym.c

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/****************************************************************************
*
*                            Open Watcom Project
*
*    Portions Copyright (c) 1983-2002 Sybase, Inc. All Rights Reserved.
*
*  ========================================================================
*
*    This file contains Original Code and/or Modifications of Original
*    Code as defined in and that are subject to the Sybase Open Watcom
*    Public License version 1.0 (the 'License'). You may not use this file
*    except in compliance with the License. BY USING THIS FILE YOU AGREE TO
*    ALL TERMS AND CONDITIONS OF THE LICENSE. A copy of the License is
*    provided with the Original Code and Modifications, and is also
*    available at www.sybase.com/developer/opensource.
*
*    The Original Code and all software distributed under the License are
*    distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
*    EXPRESS OR IMPLIED, AND SYBASE AND ALL CONTRIBUTORS HEREBY DISCLAIM
*    ALL SUCH WARRANTIES, INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF
*    MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR
*    NON-INFRINGEMENT. Please see the License for the specific language
*    governing rights and limitations under the License.
*
*  ========================================================================
*
* Description:  WHEN YOU FIGURE OUT WHAT THIS FILE DOES, PLEASE
*               DESCRIBE IT HERE!
*
****************************************************************************/


#include "plusplus.h"
#include "errdefns.h"
#include "ppops.h"
#include "vbuf.h"
#include "dbg.h"
#include "fmttype.h"
#include "template.h"
#include "fmtsym.h"


static char scopeError[]        = "***SCOPE ERROR***";
static char scopeSep[]          = "::";
static char dtorPrefix[]        = "~";
static char functionDelim[]     = "' in '";
static char constructorName[]   = "constructor";
static char destructorName[]    = "destructor";
static char operatorSuffix[]    = "()";
static char operatorPrefix[]    = "operator ";
static char operatorUnknown[]   = "conversion operator";
static char nullSymbol[]        = "***NULL SYMBOL POINTER***";
static char nullSymname[]       = "<null name>";
static char templateParmStart[] = "<";
static char templateParmNext[]  = ",";
static char templateParmStop[]  = ">";
static char templateParmUnknown[] = "?";

static char *fmtSymCgop( CGOP number )
/************************************/
{
    char *name;                 // - name

    static char *opNames[] ={   // - opcode names (binary,unary)
    #include "ppopssym.h"
    };

    if( number >= ( sizeof( opNames ) / sizeof( opNames[0] ) ) ) {
        name = "***INVALID CGOP***";
    } else if( strlen( opNames[ number ] ) == 0 ) {
        name = "***INVALID CGOP LENGTH***";
    } else {
        name = opNames[ number ];
    }
    return( name );
}

static void fmtSymFunction( SYMBOL sym, VBUF *prefix, VBUF *suffix,
/*****************************************************************/
    FMT_CONTROL control )
{
    unsigned num_def;
    TYPE fn_type;

    num_def = 0;
    for( ; sym->id == SC_DEFAULT; sym = sym->thread ) {
        ++num_def;
    }
    fn_type = sym->sym_type;
    if( num_def != 0 && TypeHasEllipsisArg( fn_type ) ) {
        /* '...' is an extra last argument in the type if it has defargs */
        ++num_def;
    }
    FormatFunctionType( fn_type, prefix, suffix, num_def, control );
}

static void fmtSymOpName( SYMBOL sym, VBUF *pvbuf )
/*************************************************/
{
    VBUF    prefix, suffix;
    TYPE type;

    VbufInit( pvbuf );
    VStrNull( pvbuf );
    type = FunctionDeclarationType( sym->sym_type );
    if( type != NULL ) {
        FormatFunctionType( type->of
                          , &prefix
                          , &suffix
                          , 0
                          , FormatTypeDefault | FF_TYPEDEF_STOP );
        if( suffix.buf != NULL ) {
            VStrConcStrRev( pvbuf, suffix.buf );
        }
        VStrTruncWhite( pvbuf );
        if( prefix.buf != NULL ) {
            VStrConcStrRev( pvbuf, prefix.buf );
        }
        VbufFree( &prefix );
        VbufFree( &suffix );
    }
}

static boolean fmtSymName( SYMBOL sym, char *name, VBUF *pvprefix,
/****************************************************************/
    VBUF *pvbuf, FMT_CONTROL control )
// returns TRUE if sym is CTOR/DTOR so that the caller drop the return type
{
    VBUF    prefix, suffix, op_name;
    CGOP    oper;
    boolean ctordtor = FALSE;

    if( name == NULL ) {
        name = nullSymname;
    }
    if( CppLookupName( name, &oper ) ) {
        switch( oper ) {
        case CO_CONVERT:
            if( sym == NULL ) {
                VStrConcStrRev( pvbuf, operatorSuffix );
                VStrConcStrRev( pvbuf, operatorUnknown );
            } else {
                fmtSymOpName( sym, &op_name );
                fmtSymFunction( sym
                              , &prefix
                              , &suffix
                              , (FormatTypeDefault & ~FF_USE_VOID)
                                                   | FF_DROP_RETURN );
                if( suffix.buf != NULL ) {
                    VStrConcStrRev( pvbuf, suffix.buf );
                }
                VStrConcStr( pvbuf, op_name.buf );
                VStrConcStrRev( pvbuf, operatorPrefix );
                if( prefix.buf != NULL ) {
                    VStrConcStrRev( pvbuf, prefix.buf );
                }
                VbufFree( &op_name );
                VbufFree( &prefix );
                VbufFree( &suffix );
            }
            break;
        case CO_CTOR:
            if( sym == NULL ) {
                VStrConcStrRev( pvbuf, constructorName );
            } else {
                ctordtor = TRUE;
                name = SimpleTypeName( ScopeClass( SymScope( sym ) ) );
                fmtSymFunction( sym, &prefix, &suffix, FormatTypeDefault );
                if( suffix.buf != NULL ) {
                    VStrConcStrRev( pvbuf, suffix.buf );
                }
                if( name != NULL ) {
                    VStrConcStrRev( pvbuf, name );
                }
                if( prefix.buf != NULL ) {
                    VStrConcStrRev( pvprefix, prefix.buf );
                }
                VbufFree( &prefix );
                VbufFree( &suffix );
            }
            break;
        case CO_DTOR:
            if( sym == NULL ) {
                VStrConcStrRev( pvbuf, destructorName );
            } else {
                ctordtor = TRUE;
                name = SimpleTypeName( ScopeClass( SymScope( sym ) ) );
                fmtSymFunction( sym, &prefix, &suffix, FormatTypeDefault );
                if( suffix.buf != NULL ) {
                    VStrConcStrRev( pvbuf, suffix.buf );
                }
                if( name != NULL ) {
                    VStrConcStrRev( pvbuf, name );
                }
                VStrConcStrRev( pvbuf, dtorPrefix );
                if( prefix.buf != NULL ) {
                    VStrConcStrRev( pvprefix, prefix.buf );
                }
                VbufFree( &prefix );
                VbufFree( &suffix );
            }
            break;
        default:
            if( sym == NULL ) {
                VStrConcStrRev( pvbuf, fmtSymCgop( oper ) );
                VStrConcStrRev( pvbuf, operatorPrefix );
            } else {
                fmtSymFunction( sym, &prefix, &suffix, FormatTypeDefault | control );
                if( suffix.buf != NULL ) {
                    VStrConcStrRev( pvbuf, suffix.buf );
                }
                VStrConcStrRev( pvbuf, fmtSymCgop( oper ) );
                VStrConcStrRev( pvbuf, operatorPrefix );
                if( prefix.buf != NULL ) {
                    VStrConcStrRev( pvprefix, prefix.buf );
                }
                VbufFree( &prefix );
                VbufFree( &suffix );
            }
            break;
        }
    } else {
        if( sym == NULL ) {
            VStrConcStrRev( pvbuf, name );
        } else {
            if( SymIsFunction( sym ) ) {
                fmtSymFunction( sym, &prefix, &suffix, FormatTypeDefault | control );
            } else if( !SymIsTypedef( sym ) ) {
                FormatType( sym->sym_type, &prefix, &suffix );
            } else {
                VbufInit( &prefix );
                VbufInit( &suffix );
            }
            if( suffix.buf != NULL ) {
                VStrConcStrRev( pvbuf, suffix.buf );
            }