gcc/d/dmd/enum.h

   1
   2 /* Compiler implementation of the D programming language
   3  * Copyright (C) 1999-2018 by The D Language Foundation, All Rights Reserved
   4  * written by Walter Bright
   5  * http://www.digitalmars.com
   6  * Distributed under the Boost Software License, Version 1.0.
   7  * http://www.boost.org/LICENSE_1_0.txt
   8  * https://github.com/dlang/dmd/blob/master/src/dmd/enum.h
   9  */
  10
  11 #pragma once
  12
  13 #include "root/root.h"
  14 #include "dsymbol.h"
  15 #include "declaration.h"
  16 #include "tokens.h"
  17
  18 class Identifier;
  19 class Type;
  20 class Expression;
  21 class VarDeclaration;
  22
  23 class EnumDeclaration : public ScopeDsymbol
  24 {
  25 public:
  26     /* The separate, and distinct, cases are:
  27      *  1. enum { ... }
  28      *  2. enum : memtype { ... }
  29      *  3. enum id { ... }
  30      *  4. enum id : memtype { ... }
  31      *  5. enum id : memtype;
  32      *  6. enum id;
  33      */
  34     Type *type;                 // the TypeEnum
  35     Type *memtype;              // type of the members
  36     Prot protection;
  37
  38     Expression *maxval;
  39     Expression *minval;
  40     Expression *defaultval;     // default initializer
  41
  42     bool isdeprecated;
  43     bool added;
  44     int inuse;
  45
  46     EnumDeclaration(Loc loc, Identifier *id, Type *memtype);
  47     Dsymbol *syntaxCopy(Dsymbol *s);
  48     void addMember(Scope *sc, ScopeDsymbol *sds);
  49     void setScope(Scope *sc);
  50     void semantic(Scope *sc);
  51     bool oneMember(Dsymbol **ps, Identifier *ident);
  52     Type *getType();
  53     const char *kind() const;
  54     Dsymbol *search(const Loc &loc, Identifier *ident, int flags = SearchLocalsOnly);
  55     bool isDeprecated();                // is Dsymbol deprecated?
  56     Prot prot();
  57     Expression *getMaxMinValue(Loc loc, Identifier *id);
  58     bool isSpecial() const;
  59     Expression *getDefaultValue(Loc loc);
  60     Type *getMemtype(Loc loc);
  61
  62     EnumDeclaration *isEnumDeclaration() { return this; }
  63
  64     Symbol *sinit;
  65     void accept(Visitor *v) { v->visit(this); }
  66 };
  67
  68
  69 class EnumMember : public VarDeclaration
  70 {
  71 public:
  72     /* Can take the following forms:
  73      *  1. id
  74      *  2. id = value
  75      *  3. type id = value
  76      */
  77     Expression *&value();
  78
  79     // A cast() is injected to 'value' after semantic(),
  80     // but 'origValue' will preserve the original value,
  81     // or previous value + 1 if none was specified.
  82     Expression *origValue;
  83     Type *origType;
  84
  85     EnumDeclaration *ed;
  86
  87     EnumMember(Loc loc, Identifier *id, Expression *value, Type *origType);
  88     Dsymbol *syntaxCopy(Dsymbol *s);
  89     const char *kind() const;
  90     void semantic(Scope *sc);
  91     Expression *getVarExp(Loc loc, Scope *sc);
  92
  93     EnumMember *isEnumMember() { return this; }
  94     void accept(Visitor *v) { v->visit(this); }
  95 };