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Annotation of 43BSD/usr.bin/f77/src/f77pass1/paramset.c, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1980 Regents of the University of California.
        !             3:  * All rights reserved.  The Berkeley software License Agreement
        !             4:  * specifies the terms and conditions for redistribution.
        !             5:  */
        !             6: 
        !             7: #ifndef lint
        !             8: static char sccsid[] = "@(#)paramset.c 5.1 (Berkeley) 6/7/85";
        !             9: #endif not lint
        !            10: 
        !            11: /*
        !            12:  * paramset.c
        !            13:  *
        !            14:  * Routines for handling PARAMETER statements, f77 compiler, 4.2 BSD.
        !            15:  *
        !            16:  * $Log:       paramset.c,v $
        !            17:  * Revision 3.2  84/10/13  03:52:03  donn
        !            18:  * Setting a parameter variable to a nonconstant expression is an error;
        !            19:  * previously a mere warning was emitted.  Also added a comment header.
        !            20:  * 
        !            21:  */
        !            22: 
        !            23: #include "defs.h"
        !            24: #include "data.h"
        !            25: 
        !            26: /*     process the items in a PARAMETER statement      */
        !            27: paramset( param_item_nm, param_item_vl )
        !            28: Namep param_item_nm;
        !            29: expptr param_item_vl;
        !            30: {
        !            31:   if (param_item_nm->vstg != STGUNKNOWN && param_item_nm->vstg != STGCONST )
        !            32:     dclerr("conflicting declarations", param_item_nm);
        !            33:   else if (param_item_nm->vclass == CLUNKNOWN)
        !            34:     param_item_nm->vclass = CLPARAM;
        !            35:   else if ( param_item_nm->vclass == CLPARAM )
        !            36:     dclerr("redefining PARAMETER value", param_item_nm );
        !            37:   else
        !            38:     dclerr("conflicting declarations", param_item_nm);
        !            39: 
        !            40:   if (param_item_nm->vclass == CLPARAM)
        !            41:     {
        !            42:       if (!ISCONST(param_item_vl))
        !            43:        param_item_vl = fixtype(param_item_vl);
        !            44: 
        !            45:       if (param_item_nm->vtype == TYUNKNOWN)
        !            46:        {
        !            47:          char c;
        !            48: 
        !            49:          c = param_item_nm->varname[0];
        !            50:          if (c >= 'A' && c <= 'Z')
        !            51:            c = c - 'A';
        !            52:          else
        !            53:            c = c - 'a';
        !            54:          param_item_nm->vtype = impltype[c];
        !            55:          param_item_nm->vleng = ICON(implleng[c]);
        !            56:        }
        !            57:       if (param_item_nm->vtype == TYUNKNOWN)
        !            58:        { 
        !            59:          warn1("type undefined for %s",
        !            60:                varstr(VL, param_item_nm->varname));
        !            61:          ((struct Paramblock *) (param_item_nm))->paramval = param_item_vl;
        !            62:        }
        !            63:       else
        !            64:        {
        !            65:          extern int badvalue;
        !            66:          extern expptr constconv();
        !            67:          int type;
        !            68:          ftnint len;
        !            69: 
        !            70:          type = param_item_nm->vtype;
        !            71:          if (type == TYCHAR)
        !            72:            {
        !            73:              if (param_item_nm->vleng != NULL)
        !            74:                len = param_item_nm->vleng->constblock.const.ci;
        !            75:              else if (ISCONST(param_item_vl) &&
        !            76:                        param_item_vl->constblock.vtype == TYCHAR)
        !            77:                len = param_item_vl->constblock.vleng->
        !            78:                        constblock.const.ci;
        !            79:              else
        !            80:                len = 1;
        !            81:            }
        !            82:          badvalue = 0;
        !            83:          if (ISCONST(param_item_vl))
        !            84:            {
        !            85:              ((struct Paramblock *) (param_item_nm))->paramval =
        !            86:                convconst(param_item_nm->vtype, len, param_item_vl);
        !            87:              if (type == TYLOGICAL)
        !            88:                ((struct Paramblock *) (param_item_nm))->paramval->
        !            89:                  headblock.vtype = TYLOGICAL;
        !            90:              frexpr((tagptr) param_item_vl);
        !            91:            }
        !            92:          else
        !            93:            {
        !            94:              erri("%s set to a nonconstant",
        !            95:                    varstr(VL, param_item_nm->varname));
        !            96:              ((struct Paramblock *) (param_item_nm))->paramval = param_item_vl;
        !            97:            }
        !            98:        }
        !            99:     }
        !           100: }

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