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|
package vm
import (
"jinx/pkg/lang/vm/code"
"jinx/pkg/lang/vm/value"
)
func (vm *VM) createCoreNullType() value.Type {
return value.Type{
Kind: value.NullType,
}
}
func (vm *VM) createCoreIntType() value.Type {
return value.Type{
Kind: value.IntType,
}
}
func (vm *VM) createCoreFloatType() value.Type {
return value.Type{
Kind: value.FloatType,
}
}
func (vm *VM) createCoreStringType() value.Type {
return value.Type{
Kind: value.StringType,
}
}
func (vm *VM) createCoreBoolType() value.Type {
return value.Type{
Kind: value.BoolType,
}
}
func (vm *VM) createCoreArrayType() value.Type {
return value.Type{
Kind: value.ArrayType,
Methods: map[string]value.FunctionData{
"length": makeCoreFn(vm.coreArrayLength, 0),
"push": makeCoreFn(vm.coreArrayPush, 1),
},
}
}
func (vm *VM) createCoreFunctionType() value.Type {
return value.Type{
Kind: value.FunctionType,
}
}
func (vm *VM) createCoreTypeRefType() value.Type {
return value.Type{
Kind: value.TypeRefType,
Methods: map[string]value.FunctionData{
"$add_method": makeCoreFn(vm.coreTypeRefIntrAddMethod, 2),
},
}
}
func (vm *VM) coreArrayLength(args []value.Value) (value.Value, error) {
a, err := ensureTypeThis[value.ArrayData](vm, value.ArrayType)
if err != nil {
return value.Value{}, err
}
len, err := a.Len(vm.memory)
if err != nil {
return value.Value{}, err
}
res := value.NewInt(int64(len))
return res, nil
}
func (vm *VM) coreArrayPush(args []value.Value) (value.Value, error) {
a, err := ensureTypeThis[value.ArrayData](vm, value.ArrayType)
if err != nil {
return value.Value{}, err
}
return value.Value{}, a.Push(vm.memory, args[0])
}
func (vm *VM) coreTypeRefIntrAddMethod(args []value.Value) (value.Value, error) {
ref, err := ensureTypeThis[value.TypeRefData](vm, value.TypeRefType)
if err != nil {
return value.Value{}, err
}
fn, err := ensureType[value.FunctionData](args[0], value.FunctionType)
if err != nil {
return value.Value{}, err
}
nameData, err := ensureType[value.StringData](args[1], value.StringType)
if err != nil {
return value.Value{}, err
}
name, err := nameData.RawString(vm.memory)
if err != nil {
return value.Value{}, err
}
return value.Value{}, ref.AddMethod(vm.memory, name, fn)
}
func ensureTypeThis[D value.Data](vm *VM, t value.TypeKind) (D, error) {
this, err := vm.getThis()
if err != nil {
return *new(D), err
}
return ensureType[D](this, t)
}
func ensureType[D value.Data](val value.Value, t value.TypeKind) (D, error) {
if val.Type() != t {
return *new(D), ErrInvalidOperandType{
Op: code.OpNop, // TODO: Add error not dependent on op.
X: val.Type(),
}
}
return val.Data().(D), nil
}
func makeCoreFn(f value.NativeFunc, argCount uint) value.FunctionData {
return value.NewNativeFunction(f, argCount).Data().(value.FunctionData)
}
func (vm *VM) getThis() (value.Value, error) {
err := vm.execGetEnv(0)
if err != nil {
return value.Value{}, err
}
// Take it back!
this, err := vm.popAndDrop()
if err != nil {
return value.Value{}, err
}
return this, nil
}
|
