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
|
package main
import (
"fmt"
"log"
)
func (f *SingleField) Define(c *Context) {
c.Putln("%s %s", f.SrcName(), f.Type.SrcName())
}
func ReadSimpleSingleField(c *Context, name string, typ Type) {
switch t := typ.(type) {
case *Resource:
c.Putln("%s = %s(xgb.Get32(buf[b:]))", name, t.SrcName())
case *TypeDef:
switch t.Size().Eval() {
case 1:
c.Putln("%s = %s(buf[b])", name, t.SrcName())
case 2:
c.Putln("%s = %s(xgb.Get16(buf[b:]))", name, t.SrcName())
case 4:
c.Putln("%s = %s(xgb.Get32(buf[b:]))", name, t.SrcName())
case 8:
c.Putln("%s = %s(xgb.Get64(buf[b:]))", name, t.SrcName())
}
case *Base:
// If this is a bool, stop short and do something special.
if t.SrcName() == "bool" {
c.Putln("if buf[b] == 1 {")
c.Putln("%s = true", name)
c.Putln("} else {")
c.Putln("%s = false", name)
c.Putln("}")
break
}
var val string
switch t.Size().Eval() {
case 1:
val = fmt.Sprintf("buf[b]")
case 2:
val = fmt.Sprintf("xgb.Get16(buf[b:])")
case 4:
val = fmt.Sprintf("xgb.Get32(buf[b:])")
case 8:
val = fmt.Sprintf("xgb.Get64(buf[b:])")
}
// We need to convert base types if they aren't uintXX or byte
ty := t.SrcName()
if ty != "byte" && ty != "uint16" && ty != "uint32" && ty != "uint64" {
val = fmt.Sprintf("%s(%s)", ty, val)
}
c.Putln("%s = %s", name, val)
default:
log.Panicf("Cannot read field '%s' as a simple field with %T type.",
name, typ)
}
c.Putln("b += %s", typ.Size())
}
func (f *SingleField) Read(c *Context, prefix string) {
switch t := f.Type.(type) {
case *Resource:
ReadSimpleSingleField(c, fmt.Sprintf("%s%s", prefix, f.SrcName()), t)
case *TypeDef:
ReadSimpleSingleField(c, fmt.Sprintf("%s%s", prefix, f.SrcName()), t)
case *Base:
ReadSimpleSingleField(c, fmt.Sprintf("%s%s", prefix, f.SrcName()), t)
case *Struct:
c.Putln("%s%s = %s{}", prefix, f.SrcName(), t.SrcName())
c.Putln("b += %sRead(buf[b:], &%s%s)", t.SrcName(), prefix, f.SrcName())
case *Union:
c.Putln("%s%s = %s{}", prefix, f.SrcName(), t.SrcName())
c.Putln("b += %sRead(buf[b:], &%s%s)", t.SrcName(), prefix, f.SrcName())
default:
log.Panicf("Cannot read field '%s' with %T type.", f.XmlName(), f.Type)
}
}
func WriteSimpleSingleField(c *Context, name string, typ Type) {
switch t := typ.(type) {
case *Resource:
c.Putln("xgb.Put32(buf[b:], uint32(%s))", name)
case *TypeDef:
switch t.Size().Eval() {
case 1:
c.Putln("buf[b] = byte(%s)", name)
case 2:
c.Putln("xgb.Put16(buf[b:], uint16(%s))", name)
case 4:
c.Putln("xgb.Put32(buf[b:], uint32(%s))", name)
case 8:
c.Putln("xgb.Put64(buf[b:], uint64(%s))", name)
}
case *Base:
// If this is a bool, stop short and do something special.
if t.SrcName() == "bool" {
c.Putln("if %s {", name)
c.Putln("buf[b] = 1")
c.Putln("} else {")
c.Putln("buf[b] = 0")
c.Putln("}")
break
}
switch t.Size().Eval() {
case 1:
if t.SrcName() != "byte" {
c.Putln("buf[b] = byte(%s)", name)
} else {
c.Putln("buf[b] = %s", name)
}
case 2:
if t.SrcName() != "uint16" {
c.Putln("xgb.Put16(buf[b:], uint16(%s))", name)
} else {
c.Putln("xgb.Put16(buf[b:], %s)", name)
}
case 4:
if t.SrcName() != "uint32" {
c.Putln("xgb.Put32(buf[b:], uint32(%s))", name)
} else {
c.Putln("xgb.Put32(buf[b:], %s)", name)
}
case 8:
if t.SrcName() != "uint64" {
c.Putln("xgb.Put64(buf[b:], uint64(%s))", name)
} else {
c.Putln("xgb.Put64(buf[b:], %s)", name)
}
}
default:
log.Fatalf("Cannot read field '%s' as a simple field with %T type.",
name, typ)
}
c.Putln("b += %s", typ.Size())
}
func (f *SingleField) Write(c *Context, prefix string) {
switch t := f.Type.(type) {
case *Resource:
WriteSimpleSingleField(c, fmt.Sprintf("%s%s", prefix, f.SrcName()), t)
case *TypeDef:
WriteSimpleSingleField(c, fmt.Sprintf("%s%s", prefix, f.SrcName()), t)
case *Base:
WriteSimpleSingleField(c, fmt.Sprintf("%s%s", prefix, f.SrcName()), t)
case *Union:
c.Putln("{")
c.Putln("unionBytes := %s%s.Bytes()", prefix, f.SrcName())
c.Putln("copy(buf[b:], unionBytes)")
c.Putln("b += xgb.Pad(len(unionBytes))")
c.Putln("}")
case *Struct:
c.Putln("{")
c.Putln("structBytes := %s%s.Bytes()", prefix, f.SrcName())
c.Putln("copy(buf[b:], structBytes)")
c.Putln("b += xgb.Pad(len(structBytes))")
c.Putln("}")
default:
log.Fatalf("Cannot read field '%s' with %T type.", f.XmlName(), f.Type)
}
}
|
