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// Copyright 2015 syzkaller project authors. All rights reserved.
// Use of this source code is governed by Apache 2 LICENSE that can be found in the LICENSE file.
package prog
func (p *Prog) Clone() *Prog {
p1 := new(Prog)
newargs := make(map[*Arg]*Arg)
for _, c := range p.Calls {
c1 := new(Call)
c1.Meta = c.Meta
c1.Ret = c.Ret.clone(c1, newargs)
for _, arg := range c.Args {
c1.Args = append(c1.Args, arg.clone(c1, newargs))
}
p1.Calls = append(p1.Calls, c1)
}
if err := p1.validate(); err != nil {
panic(err)
}
return p1
}
func (arg *Arg) clone(c *Call, newargs map[*Arg]*Arg) *Arg {
arg1 := new(Arg)
*arg1 = *arg
arg1.Data = append([]byte{}, arg.Data...)
switch arg.Kind {
case ArgPointer:
if arg.Res != nil {
arg1.Res = arg.Res.clone(c, newargs)
}
case ArgUnion:
arg1.Option = arg.Option.clone(c, newargs)
case ArgResult:
r := newargs[arg.Res]
arg1.Res = r
if r.Uses == nil {
r.Uses = make(map[*Arg]bool)
}
r.Uses[arg1] = true
}
arg1.Inner = nil
for _, arg2 := range arg.Inner {
arg1.Inner = append(arg1.Inner, arg2.clone(c, newargs))
}
if len(arg1.Uses) != 0 {
arg1.Uses = nil // filled when we clone the referent
newargs[arg] = arg1
}
return arg1
}
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