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package value
import (
"jinx/pkg/lang/vm/code"
"jinx/pkg/lang/vm/mem"
)
type Value struct {
t TypeKind
d Data
outlet mem.Ptr
}
func NewInt(x int64) Value {
return Value{t: IntType, d: IntData(x)}
}
func NewFloat(x float64) Value {
return Value{t: FloatType, d: FloatData(x)}
}
func NewString(m mem.Mem, str string) (Value, error) {
ptr, err := m.Allocate(mem.CellKindString)
if err != nil {
return Value{}, err
}
if err = m.Set(ptr, StringCell(str)); err != nil {
return Value{}, err
}
return Value{t: StringType, d: StringData{data: ptr}}, nil
}
func NewBool(b bool) Value {
return Value{t: BoolType, d: BoolData(b)}
}
func NewArray(m mem.Mem, arr []Value) (Value, error) {
ptr, err := m.Allocate(mem.CellKindArray)
if err != nil {
return Value{}, err
}
if err = m.Set(ptr, ArrayCell(arr)); err != nil {
return Value{}, err
}
return Value{t: ArrayType, d: ArrayData{data: ptr}}, nil
}
func NewNull() Value {
return Value{t: NullType, d: NullData{}}
}
func NewFunction(pos code.Pos, args uint) Value {
return Value{t: FunctionType, d: FunctionData{pos: pos, args: args}}
}
func NewNativeFunction(f NativeFunc, args uint) Value {
return Value{t: FunctionType, d: FunctionData{native: f, args: args}}
}
func NewObject(m mem.Mem, t mem.Ptr) (Value, error) {
ptr, err := m.Allocate(mem.CellKindObject)
if err != nil {
return Value{}, err
}
if err = m.Set(ptr, ObjectCell{make(map[string]Value)}); err != nil {
return Value{}, err
}
return Value{t: ObjectType, d: ObjectData{t: t, obj: ptr}}, nil
}
func NewType(m mem.Mem, name string) (Value, error) {
ptr, err := m.Allocate(mem.CellKindType)
if err != nil {
return Value{}, err
}
t := Type{Kind: ObjectType, Name: name, Methods: make(map[string]FunctionData), Statics: make(map[string]Value)}
if err = m.Set(ptr, TypeCell(t)); err != nil {
return Value{}, err
}
return Value{t: TypeRefType, d: TypeRefData{typeRef: ptr}}, nil
}
func (v Value) Type() TypeKind {
return v.t
}
func (v Value) TypePtr(corePtrs *CorePtrs) mem.Ptr {
switch v.t {
case IntType:
return corePtrs.CoreTypeInt
case FloatType:
return corePtrs.CoreTypeFloat
case StringType:
return corePtrs.CoreTypeFloat
case BoolType:
return corePtrs.CoreTypeBool
case ArrayType:
return corePtrs.CoreTypeArray
case NullType:
return corePtrs.CoreTypeNull
case FunctionType:
return corePtrs.CoreTypeFunction
case TypeRefType:
return corePtrs.CoreTypeTypeRef
case ObjectType:
return v.d.(ObjectData).t
default:
return mem.NullPtr
}
}
func (v Value) WithType(t TypeKind) Value {
return Value{t: t, d: v.d, outlet: v.outlet}
}
func (v Value) Data() Data {
return v.d
}
func (v Value) WithData(d Data) Value {
return Value{t: v.t, d: d, outlet: v.outlet}
}
func (v Value) Outlet() mem.Ptr {
return v.outlet
}
func (v Value) WithOutlet(outlet mem.Ptr) Value {
return Value{t: v.t, d: v.d, outlet: outlet}
}
func (v Value) IsEmpty() bool {
return v == Value{}
}
func (v Value) Clone(m mem.Mem) Value {
if v.t == StringType {
str := v.d.(StringData)
m.Retain(str.data)
}
if v.t == ArrayType {
arr := v.d.(ArrayData)
m.Retain(arr.data)
}
if v.t == FunctionType {
fn := v.d.(FunctionData)
m.Retain(fn.env)
}
// If value has an outlet don't copy it into the clone,
// otherwise when the clone is dropped it will also drop the outlet.
// I don't know if this fixes the entire problem, but it seems to work.
v.outlet = mem.NullPtr
return v
}
func (v Value) Drop(m mem.Mem) {
// If value has an outlet, don't drop it and instead move it to the outlet.
if !v.outlet.IsNull() {
m.Set(v.outlet, OutletCell(v))
return
}
if v.t == StringType {
str := v.d.(StringData)
m.Release(str.data)
}
if v.t == ArrayType {
arr := v.d.(ArrayData)
m.Release(arr.data)
}
if v.t == FunctionType {
f := v.d.(FunctionData)
m.Release(f.env)
}
}
|
