| 1 | /* Copyright (c) 1982 Regents of the University of California */ |
| 2 | |
| 3 | static char sccsid[] = "@(#)languages.c 1.3 %G%"; |
| 4 | |
| 5 | /* |
| 6 | * Language management. |
| 7 | */ |
| 8 | |
| 9 | #include "defs.h" |
| 10 | #include "languages.h" |
| 11 | #include "c.h" |
| 12 | #include "pascal.h" |
| 13 | #include "asm.h" |
| 14 | |
| 15 | #ifndef public |
| 16 | typedef struct Language *Language; |
| 17 | |
| 18 | typedef enum { |
| 19 | L_PRINTDECL, L_PRINTVAL, L_TYPEMATCH, L_BUILDAREF, L_EVALAREF |
| 20 | } LanguageOp; |
| 21 | |
| 22 | typedef LanguageOperation(); |
| 23 | #endif |
| 24 | |
| 25 | struct Language { |
| 26 | String name; |
| 27 | String suffix; |
| 28 | LanguageOperation *op[10]; |
| 29 | Language next; |
| 30 | }; |
| 31 | |
| 32 | private Language head; |
| 33 | |
| 34 | /* |
| 35 | * Initialize language information. |
| 36 | * |
| 37 | * The last language initialized will be the default one |
| 38 | * for otherwise indistinguised symbols. |
| 39 | */ |
| 40 | |
| 41 | public language_init() |
| 42 | { |
| 43 | c_init(); |
| 44 | fortran_init(); |
| 45 | pascal_init(); |
| 46 | asm_init(); |
| 47 | } |
| 48 | |
| 49 | public Language findlanguage(suffix) |
| 50 | String suffix; |
| 51 | { |
| 52 | Language lang; |
| 53 | |
| 54 | lang = head; |
| 55 | if (suffix != nil) { |
| 56 | while (lang != nil and not streq(lang->suffix, suffix)) { |
| 57 | lang = lang->next; |
| 58 | } |
| 59 | if (lang == nil) { |
| 60 | lang = head; |
| 61 | } |
| 62 | } |
| 63 | return lang; |
| 64 | } |
| 65 | |
| 66 | public String language_name(lang) |
| 67 | Language lang; |
| 68 | { |
| 69 | return (lang == nil) ? "(nil)" : lang->name; |
| 70 | } |
| 71 | |
| 72 | public Language language_define(name, suffix) |
| 73 | String name; |
| 74 | String suffix; |
| 75 | { |
| 76 | Language p; |
| 77 | |
| 78 | p = new(Language); |
| 79 | p->name = name; |
| 80 | p->suffix = suffix; |
| 81 | p->next = head; |
| 82 | head = p; |
| 83 | return p; |
| 84 | } |
| 85 | |
| 86 | public language_setop(lang, op, operation) |
| 87 | Language lang; |
| 88 | LanguageOp op; |
| 89 | LanguageOperation *operation; |
| 90 | { |
| 91 | checkref(lang); |
| 92 | assert(ord(op) <= ord(L_EVALAREF)); |
| 93 | lang->op[ord(op)] = operation; |
| 94 | } |
| 95 | |
| 96 | public LanguageOperation *language_op(lang, op) |
| 97 | Language lang; |
| 98 | LanguageOp op; |
| 99 | { |
| 100 | LanguageOperation *o; |
| 101 | |
| 102 | checkref(lang); |
| 103 | o = lang->op[ord(op)]; |
| 104 | checkref(o); |
| 105 | return o; |
| 106 | } |