parse.c

来自「开放源码的编译器open watcom 1.6.0版的源代码」· C语言 代码 · 共 1,171 行 · 第 1/2 页

 */
static void handle_F( OPT_STORAGE *cmdOpts, int x )
/*************************************************/
{
    static int          hasBeenCalled;
    OPT_STRING *        p;

    x = x;
    if( hasBeenCalled ) {
        Warning( "Overriding /F%s with /F%s", cmdOpts->F_value->data,
                 cmdOpts->F_value->next->data );
        p = cmdOpts->F_value->next;
        FreeMem( cmdOpts->F_value );
        cmdOpts->F_value = p;
    } else {
        hasBeenCalled = 1;
    }
}


/*
 * Warn when the previous /Fe value is overridden.
 */
static void handle_Fe( OPT_STORAGE *cmdOpts, int x )
/**************************************************/
{
    static int          hasBeenCalled;
    OPT_STRING *        p;

    x = x;
    if( hasBeenCalled ) {
        Warning( "Overriding /Fe%s with /Fe%s", cmdOpts->Fe_value->data,
                 cmdOpts->Fe_value->next->data );
        p = cmdOpts->Fe_value->next;
        FreeMem( cmdOpts->Fe_value );
        cmdOpts->Fe_value = p;
    } else {
        hasBeenCalled = 1;
    }
}


/*
 * Warn when the previous /Fp value is overridden.
 */
static void handle_Fp( OPT_STORAGE *cmdOpts, int x )
/**************************************************/
{
    static int          hasBeenCalled;
    OPT_STRING *        p;

    x = x;
    if( hasBeenCalled ) {
        Warning( "Overriding /Fp%s with /Fp%s", cmdOpts->Fp_value->data,
                 cmdOpts->Fp_value->next->data );
        p = cmdOpts->Fp_value->next;
        FreeMem( cmdOpts->Fp_value );
        cmdOpts->Fp_value = p;
    } else {
        hasBeenCalled = 1;
    }
}


/*
 * Warn when the previous /FR value is overridden.
 */
static void handle_FR( OPT_STORAGE *cmdOpts, int x )
/**************************************************/
{
    static int          hasBeenCalled;
    OPT_STRING *        p;

    x = x;
    if( hasBeenCalled ) {
        Warning( "Overriding /FR%s with /FR%s", cmdOpts->FR_value->data,
                 cmdOpts->FR_value->next->data );
        p = cmdOpts->FR_value->next;
        FreeMem( cmdOpts->FR_value );
        cmdOpts->FR_value = p;
    } else {
        Warning( "Browsing information will be output to .mbr file(s)" );
        hasBeenCalled = 1;
    }
}


/*
 * Suppress warning messages.
 */
static void handle_nowwarn( OPT_STORAGE *cmdOpts, int x )
/*******************************************************/
{
    x = x;
    cmdOpts = cmdOpts;
    DisableWarnings( 1 );
}


/*
 * Warn when one of /Ob0, /Ob1, and /Ob2 overrides another.
 */
static void handle_inlining_level( OPT_STORAGE *cmdOpts, int x )
/**************************************************************/
{
    static int          hasBeenCalled;
    static int          prevValue;

    x = x;
    if( hasBeenCalled ) {
        if( prevValue != cmdOpts->Ob_value ) {
            Warning( "Overriding /Ob%d with /Ob%d", prevValue,
                     cmdOpts->Ob_value );
        }
    } else {
        hasBeenCalled = 1;
    }
    prevValue = cmdOpts->Ob_value;
}


/*
 * Warn when one of /O1, /O2, and /Ox overrides another.  Note that, for
 * MS compatability, no warning is issued when one of /O2 and /Ox overrides
 * the other.
 */
static void handle_opt_level( OPT_STORAGE *cmdOpts, int x )
/*********************************************************/
{
    static int          hasBeenCalled;
    static int          prevValue;

    x = x;
    if( hasBeenCalled ) {
        if( prevValue == OPT_opt_level_O1 ) {
            if( cmdOpts->opt_level == OPT_opt_level_O2 ) {
                Warning( "Overriding /O1 with /O2" );
            } else if( cmdOpts->opt_level == OPT_opt_level_Ox ) {
                Warning( "Overriding /O1 with /Ox" );
            }
        } else if( prevValue == OPT_opt_level_O2 ) {
            if( cmdOpts->opt_level == OPT_opt_level_O1 ) {
                Warning( "Overriding /O2 with /O1" );
            }
        } else if( prevValue == OPT_opt_level_Ox ) {
            if( cmdOpts->opt_level == OPT_opt_level_O1 ) {
                Warning( "Overriding /Ox with /O1" );
            }
        } else if( prevValue == OPT_opt_level_Od ) {
            if( cmdOpts->opt_level == OPT_opt_level_O1 ) {
                Warning( "Overriding /Od with /O1" );
            } else if( cmdOpts->opt_level == OPT_opt_level_O2 ) {
                Warning( "Overriding /Od with /O2" );
            } else if( cmdOpts->opt_level == OPT_opt_level_Ox ) {
                Warning( "Overriding /Od with /Ox" );
            }
        }
    } else {
        hasBeenCalled = 1;
    }
    prevValue = cmdOpts->opt_level;
}


/*
 * Warn when one of /Os and /Ot overrides the other.
 */
static void handle_opt_size_time( OPT_STORAGE *cmdOpts, int x )
/*************************************************************/
{
    static int          hasBeenCalled;
    static int          prevValue;

    x = x;
    if( hasBeenCalled ) {
        if( prevValue == OPT_opt_size_time_Os ) {
            if( cmdOpts->opt_size_time == OPT_opt_size_time_Ot ) {
                Warning( "Overriding /Os with /Ot" );
            }
        } else if( prevValue == OPT_opt_size_time_Ot ) {
            if( cmdOpts->opt_size_time == OPT_opt_size_time_Os ) {
                Warning( "Overriding /Ot with /Os" );
            }
        }
    } else {
        hasBeenCalled = 1;
    }
    prevValue = cmdOpts->opt_size_time;
}


/*
 * Warn when one of /Ge and /Gs overrides the other.
 */
static void handle_stack_probes( OPT_STORAGE *cmdOpts, int x )
/************************************************************/
{
    static int          hasBeenCalled;
    static int          prevValue;

    x = x;
    if( cmdOpts->Gs_value != NULL ) {
        Warning( "Ignoring unsupported parameter '%s' to /Gs",
                 cmdOpts->Gs_value->data );
        OPT_CLEAN_STRING( &(cmdOpts->Gs_value) );
    }

    if( hasBeenCalled ) {
        if( prevValue == OPT_stack_probes_Ge ) {
            if( cmdOpts->stack_probes == OPT_stack_probes_Gs ) {
                Warning( "Overriding /Ge with /Gs" );
            }
        } else if( prevValue == OPT_stack_probes_Gs ) {
            if( cmdOpts->stack_probes == OPT_stack_probes_Ge ) {
                Warning( "Overriding /Gs with /Ge" );
            }
        }
    } else {
        hasBeenCalled = 1;
    }
    prevValue = cmdOpts->stack_probes;
}


/*
 * Warn when one of /MD, /ML, and /MT overrides another.
 */
static void handle_threads_linking( OPT_STORAGE *cmdOpts, int x )
/***************************************************************/
{
    static int          hasBeenCalled;
    static int          prevValue;
    char                oldType, newType;

    x = x;
    if( hasBeenCalled ) {
        if( prevValue != cmdOpts->threads_linking ) {
            switch( prevValue ) {                   /* what's the old type? */
              case OPT_threads_linking_MD:
                oldType = 'D';
                break;
              case OPT_threads_linking_ML:
                oldType = 'L';
                break;
              case OPT_threads_linking_MT:
                oldType = 'T';
                break;
              default:
                Zoinks();
            }
            switch( cmdOpts->threads_linking ) {    /* what's the new type? */
              case OPT_threads_linking_MD:
                newType = 'D';
                break;
              case OPT_threads_linking_ML:
                newType = 'L';
                break;
              case OPT_threads_linking_MT:
                newType = 'T';
                break;
              default:
                Zoinks();
            }
            Warning( "Overriding /M%c with /M%c", oldType, newType );
        }
    } else {
        hasBeenCalled = 1;
    }
    prevValue = cmdOpts->threads_linking;
}


/*
 * Warn when one of /w and /W overrides the other.
 */
static void handle_warn_level( OPT_STORAGE *cmdOpts, int x )
/**********************************************************/
{
    static int          hasBeenCalled;
    static int          prevType;
    static int          prevLevel;

    x = x;
    if( hasBeenCalled ) {
        if( prevType == OPT_warn_level_w ) {
            if( cmdOpts->warn_level == OPT_warn_level_W ) {
                if( cmdOpts->W_value != 0 ) {
                    Warning( "Overriding /w with /W%d", cmdOpts->W_value );
                }
            }
        } else if( prevType == OPT_warn_level_W ) {
            if( cmdOpts->warn_level == OPT_warn_level_w ) {
                if( prevLevel != 0 ) {
                    Warning( "Overriding /W%d with /w", prevLevel );
                }
            } else if( cmdOpts->warn_level == OPT_warn_level_W ) {
                if( cmdOpts->W_value != prevLevel ) {
                    Warning( "Overriding /W%d with /W%d", prevLevel,
                             cmdOpts->W_value );
                }
            }
        }
    } else {
        hasBeenCalled = 1;
    }

    prevType = cmdOpts->warn_level;
    if( prevType == OPT_warn_level_W ) {
        prevLevel = cmdOpts->W_value;
    } else {
        prevLevel = 0;
    }
}


/*
 * Ensure that /Yc has no filename parameter.
 */
static void handle_precomp_headers( OPT_STORAGE *cmdOpts, int x )
/***************************************************************/
{
    x = x;
    if( cmdOpts->precomp_headers == OPT_precomp_headers_Yc ) {
        if( cmdOpts->Yc_value != NULL ) {
            Warning( "Ignoring unsupported parameter '%s' to /Yc",
                     cmdOpts->Yc_value->data );
            OPT_CLEAN_STRING( &(cmdOpts->Yc_value) );
        }
    } else if( cmdOpts->precomp_headers == OPT_precomp_headers_Yu ) {
        if( cmdOpts->Yu_value != NULL ) {
            Warning( "Ignoring unsupported parameter '%s' to /Yu",
                     cmdOpts->Yu_value->data );
            OPT_CLEAN_STRING( &(cmdOpts->Yu_value) );
        }
    } else if( cmdOpts->precomp_headers == OPT_precomp_headers_YX ) {
        if( cmdOpts->YX_value != NULL ) {
            Warning( "Ignoring unsupported parameter '%s' to /YX",
                     cmdOpts->YX_value->data );
            OPT_CLEAN_STRING( &(cmdOpts->YX_value) );
        }
    }
}


/*
 * Handle options which can be either /option- to disable or /option to
 * enable.  Option-specific information is passed as parameters.  Returns
 * non-zero if the option should be enabled or zero if it should be disabled.
 */
static int handle_on_off_option( int *hasBeenCalled, char *optName, int isOn )
/****************************************************************************/
{
    int                 rc = isOn;

    if( *hasBeenCalled ) {
        /*** Warn when one of /option and /option- overrides the other ***/
        if( isOn ) {
            if( GetCharContext() == '-' ) {
                Warning( "Overriding /%s with /%s-", optName, optName );
                rc = 0;
            } else {
                UngetCharContext();
            }
        } else {
            if( GetCharContext() != '-' ) {
                Warning( "Overriding /%s- with /%s", optName, optName );
                rc = 1;
            } else {
                UngetCharContext();
            }
        }
    } else {
        /*** Handle /option- for the first time ***/
        *hasBeenCalled = 1;
        if( GetCharContext() == '-' ) {
            rc = 0;
        } else {
            UngetCharContext();
        }
    }

    return( rc );
}


/*
 * Parse the /GX and /GX- options.
 */
static void handle_GX( OPT_STORAGE *cmdOpts, int x )
/**************************************************/
{
    static int          hasBeenCalled;

    x = x;
    if( handle_on_off_option( &hasBeenCalled, "GX", cmdOpts->GX ) ) {
        cmdOpts->GX = 1;
    } else {
        cmdOpts->GX = 0;
    }
}


/*
 * Parse the /Op and /Op- options.
 */
static void handle_Op( OPT_STORAGE *cmdOpts, int x )
/**************************************************/
{
    static int          hasBeenCalled;

    x = x;
    if( handle_on_off_option( &hasBeenCalled, "Op", cmdOpts->Op ) ) {
        cmdOpts->Op = 1;
    } else {
        cmdOpts->Op = 0;
    }
}


/*
 * Parse the /Oy and /Oy- options.
 */
static void handle_Oy( OPT_STORAGE *cmdOpts, int x )
/**************************************************/
{
    static int          hasBeenCalled;

    x = x;
    if( handle_on_off_option( &hasBeenCalled, "Oy", cmdOpts->Oy ) ) {
        cmdOpts->Oy = 1;
    } else {
        cmdOpts->Oy = 0;
    }
}


/*
 * Return the next character and advance to the next one.
 */
static int OPT_GET_LOWER( void )
/******************************/
{
    return( GetCharContext() );
}


/*
 * If the next character is ch, it is consumed and a non-zero value
 * is returned; otherwise, it is not consumed and zero is returned.
 */
static int OPT_RECOG( int ch )
/**********************************/
{
    return( CmdScanRecogCharExact( ch ) );
}

/*
 * If the next character is ch (in either uppercase or lowercase form), it
 * is consumed and a non-zero value is returned; otherwise, it is not
 * consumed and zero is returned.
 */
static int OPT_RECOG_LOWER( int ch )
/**********************************/
{
    return( CmdScanRecogChar( ch ) );
}


/*
 * Back up one character.
 */
static void OPT_UNGET( void )
/***************************/
{
    UngetCharContext();
}


/*
 * Scan an optional filename.  No leading whitespace is permitted.
 */
static int OPT_GET_FILE_OPT( OPT_STRING **p )
/*******************************************/
{
    char *              filename;

    filename = CmdScanFileName();
    if( filename != NULL ) {
        add_string( p, filename );
    } else {
        OPT_CLEAN_STRING( p );
    }
    return( 1 );
}


/*
 * Scan a pathname.  No leading whitespace is permitted.
 */
static int OPT_GET_PATH( OPT_STRING **p )
/***************************************/
{
    char *              filename;

    filename = CmdScanFileName();
    if( filename != NULL ) {
        add_string( p, filename );
    } else {
        OPT_CLEAN_STRING( p );
    }
    return( 1 );
}


/*
 * Scan a number.  No leading whitespace is permitted.
 */
static int OPT_GET_NUMBER( unsigned *p )
/**************************************/
{
    unsigned            value;

    if( CmdScanNumber( &value ) ) {
        *p = value;
        return( 1 );
    } else {
        return( 0 );
    }
}


/*
 * Scan an optional number.  No leading whitespace is permitted.
 */
static int OPT_GET_NUMBER_DEFAULT( unsigned *p, unsigned value )
/**************************************************************/
{
    char ch;

    *p = value;
    ch = GetCharContext();
    UngetCharContext();
    if( isdigit( ch ) ) {
        if( CmdScanNumber( &value ) ) {
            *p = value;
            return( 1 );
        } else {
            return( 0 );
        }
    }
    return( 1 );
}


/*
 * Is this the end of an option chain?
 */
static int OPT_END( void )
/************************/
{
    char ch;

    ch = GetCharContext();
    if( ch == '\0' )  return( 1 );
    UngetCharContext();
    if( isspace( ch ) ) return( 1 );
    if( ch == '/' ) return( 1 );
    if( ch == '-' ) return( 1 );
    if( ch == '\@' ) return( 1 );
    if( ch == '"' ) return( 1 );
    if( ch == '\'' ) return( 1 );
    return( 0 );
}

/* Include after all static functions were declared */
#if defined(__TARGET_386__)
    #include "optp386c.gh"
#elif defined(__TARGET_AXP__)
    #include "optpaxpc.gh"
#elif defined(__TARGET_PPC__)
    #include "optpppcc.gh"
#else
    #error Unrecognized CPU type
#endif