dmd.gluelayer source code

1 /**
2  * Declarations for back-end functions that the front-end invokes.
3  *
4  * This 'glues' either the DMC or GCC back-end to the front-end.
5  *
6  * Copyright:   Copyright (C) 1999-2023 by The D Language Foundation, All Rights Reserved
7  * Authors:     $(LINK2 https://www.digitalmars.com, Walter Bright)
8  * License:     $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
9  * Source:      $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/gluelayer.d, _gluelayer.d)
10  * Documentation:  https://dlang.org/phobos/dmd_gluelayer.html
11  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/gluelayer.d
12  */
13 
14 module dmd.gluelayer;
15 
16 import dmd.dmodule;
17 import dmd.dscope;
18 import dmd.dsymbol;
19 import dmd.mtype;
20 import dmd.statement;
21 import dmd.root.file;
22 
23 version (NoBackend)
24 {
25     struct Symbol;
26     struct code;
27     struct block;
28     struct Blockx;
29     struct elem;
30     struct TYPE;
31     alias type = TYPE;
32 
33     extern (C++)
34     {
35         // iasm
36         Statement asmSemantic(AsmStatement s, Scope* sc)
37         {
38             sc.func.hasReturnExp = 8;
39             return null;
40         }
41 
42         // toir
43         void toObjFile(Dsymbol ds, bool multiobj)   {}
44 
45         extern(C++) abstract class ObjcGlue
46         {
47             static void initialize() {}
48         }
49     }
50 }
51 else version (MARS)
52 {
53     public import dmd.backend.cc : block, Blockx, Symbol;
54     public import dmd.backend.type : type;
55     public import dmd.backend.el : elem;
56     public import dmd.backend.code_x86 : code;
57 
58     extern (C++)
59     {
60         Statement asmSemantic(AsmStatement s, Scope* sc);
61 
62         void toObjFile(Dsymbol ds, bool multiobj);
63 
64         extern(C++) abstract class ObjcGlue
65         {
66             static void initialize();
67         }
68     }
69 }
70 else version (IN_GCC)
71 {
72     extern (C++) union tree_node;
73 
74     alias Symbol = tree_node;
75     alias code = tree_node;
76     alias type = tree_node;
77 
78     extern (C++)
79     {
80         Statement asmSemantic(AsmStatement s, Scope* sc);
81         void toObjFile(Dsymbol ds, bool multiobj);
82     }
83 
84     // stubs
85     extern(C++) abstract class ObjcGlue
86     {
87         static void initialize() {}
88     }
89 }
90 else
91     static assert(false, "Unsupported compiler backend");