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