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symbol.go
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symbol.go
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package object
import "hash/fnv"
var symbolClass RubyClassObject = newClass(
"Symbol",
objectClass,
symbolMethods,
symbolClassMethods,
func(RubyClassObject, ...RubyObject) (RubyObject, error) {
return &Symbol{}, nil
},
)
func init() {
classes.Set("Symbol", symbolClass)
}
// A Symbol represents a symbol in Ruby
type Symbol struct {
Value string
}
// Inspect returns the value of the symbol
func (s *Symbol) Inspect() string { return ":" + s.Value }
// Type returns SYMBOL_OBJ
func (s *Symbol) Type() Type { return SYMBOL_OBJ }
// Class returns symbolClass
func (s *Symbol) Class() RubyClass { return symbolClass }
func (s *Symbol) hashKey() hashKey {
h := fnv.New64a()
h.Write([]byte(s.Value))
return hashKey{Type: s.Type(), Value: h.Sum64()}
}
var symbolClassMethods = map[string]RubyMethod{}
var symbolMethods = map[string]RubyMethod{
"to_s": withArity(0, publicMethod(symbolToS)),
}
func symbolToS(context CallContext, args ...RubyObject) (RubyObject, error) {
if sym, ok := context.Receiver().(*Symbol); ok {
return &String{Value: sym.Value}, nil
}
return nil, nil
}