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Annotation of 43BSDReno/pgrm/dbx/languages.c, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1983 The Regents of the University of California.
        !             3:  * All rights reserved.
        !             4:  *
        !             5:  * Redistribution and use in source and binary forms are permitted
        !             6:  * provided that: (1) source distributions retain this entire copyright
        !             7:  * notice and comment, and (2) distributions including binaries display
        !             8:  * the following acknowledgement:  ``This product includes software
        !             9:  * developed by the University of California, Berkeley and its contributors''
        !            10:  * in the documentation or other materials provided with the distribution
        !            11:  * and in all advertising materials mentioning features or use of this
        !            12:  * software. Neither the name of the University nor the names of its
        !            13:  * contributors may be used to endorse or promote products derived
        !            14:  * from this software without specific prior written permission.
        !            15:  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
        !            16:  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
        !            17:  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
        !            18:  */
        !            19: 
        !            20: #ifndef lint
        !            21: static char sccsid[] = "@(#)languages.c        5.3 (Berkeley) 6/1/90";
        !            22: #endif /* not lint */
        !            23: 
        !            24: /*
        !            25:  * Language management.
        !            26:  */
        !            27: 
        !            28: #include "defs.h"
        !            29: #include "languages.h"
        !            30: #include "c.h"
        !            31: #include "pascal.h"
        !            32: #include "modula-2.h"
        !            33: #include "asm.h"
        !            34: 
        !            35: #ifndef public
        !            36: 
        !            37: typedef struct Language *Language;
        !            38: 
        !            39: typedef enum {
        !            40:     L_PRINTDECL, L_PRINTVAL, L_TYPEMATCH, L_BUILDAREF, L_EVALAREF,
        !            41:     L_MODINIT, L_HASMODULES, L_PASSADDR,
        !            42:     L_ENDOP
        !            43: } LanguageOp;
        !            44: 
        !            45: typedef LanguageOperation();
        !            46: 
        !            47: Language primlang;
        !            48: 
        !            49: #endif
        !            50: 
        !            51: struct Language {
        !            52:     String name;
        !            53:     String suffix;
        !            54:     LanguageOperation *op[20];
        !            55:     Language next;
        !            56: };
        !            57: 
        !            58: private Language head;
        !            59: 
        !            60: /*
        !            61:  * Initialize language information.
        !            62:  *
        !            63:  * The last language initialized will be the default one
        !            64:  * for otherwise indistinguised symbols.
        !            65:  */
        !            66: 
        !            67: public language_init()
        !            68: {
        !            69:     primlang = language_define("$builtin symbols", ".?");
        !            70:     c_init();
        !            71:     fortran_init();
        !            72:     pascal_init();
        !            73:     modula2_init();
        !            74:     asm_init();
        !            75: }
        !            76: 
        !            77: public Language findlanguage(suffix)
        !            78: String suffix;
        !            79: {
        !            80:     Language lang;
        !            81: 
        !            82:     lang = head;
        !            83:     if (suffix != nil) {
        !            84:        while (lang != nil and not streq(lang->suffix, suffix)) {
        !            85:            lang = lang->next;
        !            86:        }
        !            87:        if (lang == nil) {
        !            88:            lang = head;
        !            89:        }
        !            90:     }
        !            91:     return lang;
        !            92: }
        !            93: 
        !            94: public String language_name(lang)
        !            95: Language lang;
        !            96: {
        !            97:     return (lang == nil) ? "(nil)" : lang->name;
        !            98: }
        !            99: 
        !           100: public Language language_define(name, suffix)
        !           101: String name;
        !           102: String suffix;
        !           103: {
        !           104:     Language p;
        !           105: 
        !           106:     p = new(Language);
        !           107:     p->name = name;
        !           108:     p->suffix = suffix;
        !           109:     p->next = head;
        !           110:     head = p;
        !           111:     return p;
        !           112: }
        !           113: 
        !           114: public language_setop(lang, op, operation)
        !           115: Language lang;
        !           116: LanguageOp op;
        !           117: LanguageOperation *operation;
        !           118: {
        !           119:     checkref(lang);
        !           120:     assert(ord(op) < ord(L_ENDOP));
        !           121:     lang->op[ord(op)] = operation;
        !           122: }
        !           123: 
        !           124: public LanguageOperation *language_op(lang, op)
        !           125: Language lang;
        !           126: LanguageOp op;
        !           127: {
        !           128:     LanguageOperation *o;
        !           129: 
        !           130:     checkref(lang);
        !           131:     o = lang->op[ord(op)];
        !           132:     checkref(o);
        !           133:     return o;
        !           134: }

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