/
func.go
55 lines (44 loc) · 864 Bytes
/
func.go
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package genutil
import (
"go/types"
"golang.org/x/tools/go/packages"
)
// Func is a function representation.
type Func struct {
Sig *types.Signature
Decl *types.Func
}
// Results returns function results.
func (f Func) Results() *types.Tuple {
return f.Sig.Results()
}
// Args returns function arguments.
func (f Func) Args() *types.Tuple {
return f.Sig.Params()
}
// Funcs collects all function from package using given filter.
// Parameter keep may be nil.
func Funcs(pkg *packages.Package, keep func(f Func) bool) []Func {
var r []Func
for _, def := range pkg.TypesInfo.Defs {
if def == nil {
continue
}
f, ok := def.(*types.Func)
if !ok {
continue
}
sig, ok := f.Type().(*types.Signature)
if !ok {
continue
}
repr := Func{
Sig: sig,
Decl: f,
}
if keep(repr) {
r = append(r, repr)
}
}
return r
}