blob: 0f2323e231f70d74044022604a1198bc8f81f91a (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
|
package main
import (
"fmt"
"log"
)
type Field interface {
Initialize(p *Protocol)
SrcName() string
XmlName() string
Size() Size
Define(c *Context)
Read(c *Context)
Write(c *Context)
}
func (pad *PadField) Initialize(p *Protocol) {}
type PadField struct {
Bytes uint
}
func (p *PadField) SrcName() string {
panic("illegal to take source name of a pad field")
}
func (p *PadField) XmlName() string {
panic("illegal to take XML name of a pad field")
}
func (p *PadField) Size() Size {
return newFixedSize(p.Bytes)
}
type SingleField struct {
srcName string
xmlName string
Type Type
}
func (f *SingleField) Initialize(p *Protocol) {
f.srcName = SrcName(f.XmlName())
f.Type = f.Type.(*Translation).RealType(p)
}
func (f *SingleField) SrcName() string {
return f.srcName
}
func (f *SingleField) XmlName() string {
return f.xmlName
}
func (f *SingleField) Size() Size {
return f.Type.Size()
}
type ListField struct {
srcName string
xmlName string
Type Type
LengthExpr Expression
}
func (f *ListField) SrcName() string {
return f.srcName
}
func (f *ListField) XmlName() string {
return f.xmlName
}
// func (f *ListField) Size() Size {
// return newExpressionSize(f.LengthExpr).Multiply(f.Type.Size())
// }
func (f *ListField) Size() Size {
simpleLen := &Function{
Name: "pad",
Expr: newBinaryOp("*", f.LengthExpr, f.Type.Size().Expression),
}
switch f.Type.(type) {
case *Struct:
sizeFun := &Function{
Name: fmt.Sprintf("%sListSize", f.Type.SrcName()),
Expr: &FieldRef{Name: f.SrcName()},
}
return newExpressionSize(sizeFun)
case *Base:
return newExpressionSize(simpleLen)
case *Resource:
return newExpressionSize(simpleLen)
default:
log.Fatalf("Cannot compute list size with type '%T'.", f.Type)
}
panic("unreachable")
}
func (f *ListField) Initialize(p *Protocol) {
f.srcName = SrcName(f.XmlName())
f.Type = f.Type.(*Translation).RealType(p)
if f.LengthExpr != nil {
f.LengthExpr.Initialize(p)
}
}
type LocalField struct {
*SingleField
}
type ExprField struct {
srcName string
xmlName string
Type Type
Expr Expression
}
func (f *ExprField) SrcName() string {
return f.srcName
}
func (f *ExprField) XmlName() string {
return f.xmlName
}
func (f *ExprField) Size() Size {
return f.Type.Size()
}
func (f *ExprField) Initialize(p *Protocol) {
f.srcName = SrcName(f.XmlName())
f.Type = f.Type.(*Translation).RealType(p)
f.Expr.Initialize(p)
}
type ValueField struct {
MaskType Type
MaskName string
ListName string
}
func (f *ValueField) SrcName() string {
panic("it is illegal to call SrcName on a ValueField field")
}
func (f *ValueField) XmlName() string {
panic("it is illegal to call XmlName on a ValueField field")
}
func (f *ValueField) Size() Size {
return f.MaskType.Size()
}
func (f *ValueField) Initialize(p *Protocol) {
f.MaskType = f.MaskType.(*Translation).RealType(p)
f.MaskName = SrcName(f.MaskName)
f.ListName = SrcName(f.ListName)
}
type SwitchField struct {
Name string
Expr Expression
Bitcases []*Bitcase
}
func (f *SwitchField) SrcName() string {
panic("it is illegal to call SrcName on a SwitchField field")
}
func (f *SwitchField) XmlName() string {
panic("it is illegal to call XmlName on a SwitchField field")
}
// XXX: This is a bit tricky. The size has to be represented as a non-concrete
// expression that finds *which* bitcase fields are included, and sums the
// sizes of those fields.
func (f *SwitchField) Size() Size {
return newFixedSize(0)
}
func (f *SwitchField) Initialize(p *Protocol) {
f.Name = SrcName(f.Name)
f.Expr.Initialize(p)
for _, bitcase := range f.Bitcases {
bitcase.Expr.Initialize(p)
for _, field := range bitcase.Fields {
field.Initialize(p)
}
}
}
type Bitcase struct {
Fields []Field
Expr Expression
}
|
