/
defs.go
46 lines (40 loc) · 798 Bytes
/
defs.go
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package utils
import (
"fmt"
"golang.org/x/tools/go/ssa"
)
var (
VarVers = make(map[ssa.Value]int)
)
// Variable definitions
type Definition struct {
Var ssa.Value
Ver int
}
// NewVarDef creates a new variable definition from an ssa.Value
func NewDef(v ssa.Value) *Definition {
if v == nil {
panic("NewVarDef: Cannot create new VarDef with nil")
}
if ver, ok := VarVers[v]; ok {
VarVers[v]++
return &Definition{
Var: v,
Ver: ver + 1,
}
}
VarVers[v] = 0
return &Definition{
Var: v,
Ver: 0,
}
}
func (vd *Definition) String() string {
if vd == nil || vd.Var == nil {
return "Undefined"
}
if vd.Var.Parent() != nil {
return fmt.Sprintf("%s.%s@%d", vd.Var.Parent().String(), vd.Var.Name(), vd.Ver)
}
return fmt.Sprintf("???.%s@%d", vd.Var.Name(), vd.Ver)
}