projects / unix-history / blame
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|---|---|---|
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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 | |
| ca67e7b4 | 8 | static char sccsid[] = "@(#)paramset.c 5.2 (Berkeley) 1/3/88"; |
| 6aa4e756 KM |
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) | |
| 9868d2fe | 74 | len = param_item_nm->vleng->constblock.constant.ci; |
| 6aa4e756 KM |
75 | else if (ISCONST(param_item_vl) && |
| 76 | param_item_vl->constblock.vtype == TYCHAR) | |
| 77 | len = param_item_vl->constblock.vleng-> | |
| 9868d2fe | 78 | constblock.constant.ci; |
| 6aa4e756 KM |
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 | } |