File: go_list.go

package info (click to toggle)
golang-github-burntsushi-xgb 0.0~git20210121.deaf085-1
  • links: PTS, VCS
  • area: main
  • in suites: bullseye, sid
  • size: 2,100 kB
  • sloc: makefile: 61
file content (107 lines) | stat: -rw-r--r-- 3,431 bytes parent folder | download | duplicates (2)
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
package main

import (
	"fmt"
	"log"
	"strings"
)

// List fields
func (f *ListField) Define(c *Context) {
	c.Putln("%s %s // size: %s",
		f.SrcName(), f.SrcType(), f.Size())
}

func (f *ListField) Read(c *Context, prefix string) {
	switch t := f.Type.(type) {
	case *Resource:
		length := f.LengthExpr.Reduce(prefix)
		c.Putln("%s%s = make([]%s, %s)",
			prefix, f.SrcName(), t.SrcName(), length)
		c.Putln("for i := 0; i < int(%s); i++ {", length)
		ReadSimpleSingleField(c, fmt.Sprintf("%s%s[i]", prefix, f.SrcName()), t)
		c.Putln("}")
	case *Base:
		length := f.LengthExpr.Reduce(prefix)
		if strings.ToLower(t.XmlName()) == "char" {
			c.Putln("{")
			c.Putln("byteString := make([]%s, %s)", t.SrcName(), length)
			c.Putln("copy(byteString[:%s], buf[b:])", length)
			c.Putln("%s%s = string(byteString)", prefix, f.SrcName())
			// This is apparently a special case. The "Str" type itself
			// doesn't specify any padding. I suppose it's up to the
			// request/reply spec that uses it to get the padding right?
			c.Putln("b += int(%s)", length)
			c.Putln("}")
		} else if t.SrcName() == "byte" {
			c.Putln("%s%s = make([]%s, %s)",
				prefix, f.SrcName(), t.SrcName(), length)
			c.Putln("copy(%s%s[:%s], buf[b:])", prefix, f.SrcName(), length)
			c.Putln("b += int(%s)", length)
		} else {
			c.Putln("%s%s = make([]%s, %s)",
				prefix, f.SrcName(), t.SrcName(), length)
			c.Putln("for i := 0; i < int(%s); i++ {", length)
			ReadSimpleSingleField(c,
				fmt.Sprintf("%s%s[i]", prefix, f.SrcName()), t)
			c.Putln("}")
		}
	case *TypeDef:
		length := f.LengthExpr.Reduce(prefix)
		c.Putln("%s%s = make([]%s, %s)",
			prefix, f.SrcName(), t.SrcName(), length)
		c.Putln("for i := 0; i < int(%s); i++ {", length)
		ReadSimpleSingleField(c, fmt.Sprintf("%s%s[i]", prefix, f.SrcName()), t)
		c.Putln("}")
	case *Union:
		c.Putln("%s%s = make([]%s, %s)",
			prefix, f.SrcName(), t.SrcName(), f.LengthExpr.Reduce(prefix))
		c.Putln("b += %sReadList(buf[b:], %s%s)",
			t.SrcName(), prefix, f.SrcName())
	case *Struct:
		c.Putln("%s%s = make([]%s, %s)",
			prefix, f.SrcName(), t.SrcName(), f.LengthExpr.Reduce(prefix))
		c.Putln("b += %sReadList(buf[b:], %s%s)",
			t.SrcName(), prefix, f.SrcName())
	default:
		log.Panicf("Cannot read list field '%s' with %T type.",
			f.XmlName(), f.Type)
	}
}

func (f *ListField) Write(c *Context, prefix string) {
	switch t := f.Type.(type) {
	case *Resource:
		length := f.Length().Reduce(prefix)
		c.Putln("for i := 0; i < int(%s); i++ {", length)
		WriteSimpleSingleField(c,
			fmt.Sprintf("%s%s[i]", prefix, f.SrcName()), t)
		c.Putln("}")
	case *Base:
		length := f.Length().Reduce(prefix)
		if t.SrcName() == "byte" {
			c.Putln("copy(buf[b:], %s%s[:%s])", prefix, f.SrcName(), length)
			c.Putln("b += int(%s)", length)
		} else {
			c.Putln("for i := 0; i < int(%s); i++ {", length)
			WriteSimpleSingleField(c,
				fmt.Sprintf("%s%s[i]", prefix, f.SrcName()), t)
			c.Putln("}")
		}
	case *TypeDef:
		length := f.Length().Reduce(prefix)
		c.Putln("for i := 0; i < int(%s); i++ {", length)
		WriteSimpleSingleField(c,
			fmt.Sprintf("%s%s[i]", prefix, f.SrcName()), t)
		c.Putln("}")
	case *Union:
		c.Putln("b += %sListBytes(buf[b:], %s%s)",
			t.SrcName(), prefix, f.SrcName())
	case *Struct:
		c.Putln("b += %sListBytes(buf[b:], %s%s)",
			t.SrcName(), prefix, f.SrcName())
	default:
		log.Panicf("Cannot write list field '%s' with %T type.",
			f.XmlName(), f.Type)
	}
}