/
assembler.go
105 lines (93 loc) · 2.01 KB
/
assembler.go
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package loader
import (
"errors"
"reflect"
)
//Assembler data assembler struct
type Assembler struct {
config *Config
part Part
path Path
step Step
}
//Assemble assemble data to given value.
//Return assemble result and any error if raised.
func (a *Assembler) Assemble(v interface{}) (ok bool, err error) {
defer func() {
r := recover()
if r != nil {
err, ok = r.(error)
if err == nil || !ok {
if s, ok := r.(string); ok {
err = errors.New(s)
} else {
panic(r)
}
}
ok = false
err = NewAssemblerError(a, err)
}
}()
rv := reflect.ValueOf(v)
if rv.IsZero() || rv.Type().Kind() != reflect.Ptr {
return false, ErrNotPtr
}
ok, err = a.config.Unifiers.Unify(a, reflect.Indirect(rv))
return ok, err
}
//CheckType check given reflect type type.
//Return type and any error if raised.
func (a *Assembler) CheckType(rv reflect.Value) (tp Type, err error) {
return a.Config().Checkers.CheckType(a, rv)
}
//WithConfig create new assembler with given config
func (a *Assembler) WithConfig(c *Config) *Assembler {
return &Assembler{
config: c,
part: a.part,
path: a.path,
step: a.step,
}
}
//WithPart create new assembler with given part
func (a *Assembler) WithPart(p Part) *Assembler {
return &Assembler{
config: a.config,
part: p,
path: nil,
step: nil,
}
}
//WithChild create assembler with given child part and step
func (a *Assembler) WithChild(p Part, step Step) *Assembler {
path := a.path
if path == nil {
path = NewSteps()
}
return &Assembler{
config: a.config,
part: p,
path: path.Join(step),
step: step,
}
}
//Config return assembler config
func (a *Assembler) Config() *Config {
return a.config
}
//Part return assembler part
func (a *Assembler) Part() Part {
return a.part
}
//Path return assembler path
func (a *Assembler) Path() Path {
return a.path
}
//Step return current assembler step
func (a *Assembler) Step() Step {
return a.step
}
//EmptyAssembler empty assembler
var EmptyAssembler = &Assembler{
path: NewSteps(),
}