func (p *exporter) pkg(pkg *types.Package) {
if trace {
p.tracef("package { ")
defer p.tracef("} ")
}
if pkg == nil {
panic("unexpected nil pkg")
}
// if the package was seen before, write its index (>= 0)
if i, ok := p.pkgIndex[pkg]; ok {
p.int(i)
return
}
p.pkgIndex[pkg] = len(p.pkgIndex)
// otherwise, write the package tag (< 0) and package data
p.int(packageTag)
p.string(pkg.Name())
p.string(pkg.Path())
}
