1 using System;
 2 using System.Collections;
 3 using CodeFormatter = System.Text.CodeFormatter;
 4 
 5 namespace cmsx.intermediate
 6 {
 7     public class GlobalVariable : Value
 8     {
 9         public nothrow GlobalVariable(Type* type_, const string& name_, ConstantValue* initializer_, int line_, Location* homeLocation_, bool once_) : 
10             base(), name(name_), initializer(initializer_), homeLocation(homeLocation_), once(once_)
11         {
12             base->type = type_;
13             base->line = line_;
14         }
15         public override nothrow Location* HomeLocation() const
16         {
17             return homeLocation;
18         }
19         public override nothrow string Name() const
20         {
21             return name;
22         }
23         public void Validate()
24         {
25             try
26             {
27                 if (initializer != null)
28                 {
29                     initializer->Validate(type, "1");
30                 }
31             }
32             catch (const Exception& ex)
33             {
34                 throw Exception(ex.Message() + " at line " + ToString(line));
35             }
36         }
37         public void GenerateDeclaration(MachineCode& machineCode)
38         {
39             if (initializer != null)
40             {
41                 if (once)
42                 {
43                     MachineInstruction* linkOnceInst = machineCode.GetInstruction(cmsx.assembly.LINKONCE, null);
44                     linkOnceInst->AddOperand(machineCode.context.GetSymbolOperand(name));
45                 }
46                 else
47                 {
48                     MachineInstruction* externInst = machineCode.GetInstruction(cmsx.assembly.EXTERN, null);
49                     externInst->AddOperand(machineCode.context.GetSymbolOperand(name));
50                 }
51             }
52         }
53         public void GenerateDefinition(MachineCode& machineCode, Context& context)
54         {
55             if (initializer != null)
56             {
57                 MachineInstruction* structInst = machineCode.GetInstruction(cmsx.assembly.STRUCT, name);
58                 MachineInstruction* octaInst = machineCode.GetInstruction(cmsx.assembly.OCTA, null);
59                 string dataLabel = name + "_data";
60                 octaInst->AddOperand(machineCode.context.GetSymbolOperand(dataLabel));
61                 initializer->GenerateCode(machineCode, dataLabel, context);
62                 MachineInstruction* endSInst = machineCode.GetInstruction(cmsx.assembly.ENDS, name);
63             }
64         }
65         public void Print(CodeFormatter& formatter)
66         {
67             formatter.Write(type->Name());
68             if (once)
69             {
70                 formatter.Write(" once");
71             }
72             formatter.Write(" ");
73             formatter.Write(name);
74             if (initializer != null)
75             {
76                 formatter.Write(" = ");
77                 formatter.Write(initializer->Name());
78             }
79             else
80             {
81                 formatter.Write(";");
82             }
83         }
84         public string name;
85         public ConstantValue* initializer;
86         public Location* homeLocation;
87         public bool once;
88     }
89 }