fw/rt2/scope/modern/val.go

package modern

import (
	"fmt"
	"fw/cp"
	"fw/cp/node"
	"fw/cp/object"
	//	rtm "fw/rt2/module"
	"fw/rt2/scope"
	"fw/utils"
	"math"
	"math/big"
	"reflect"
	"strings"
	"ypk/assert"
	"ypk/halt"
)

type data struct {
	link object.Object
	val  interface{}
}

type arr struct {
	link   object.Object
	val    []interface{}
	length int64
}

type dynarr struct {
	link object.Object
	val  []interface{}
}

type proc struct {
	link object.Object
}

type rec struct {
	link object.Object
	scope.Record
	l *level
}

type ptr struct {
	link object.Object
	scope.Pointer
	val *ptrValue
}

type idx struct {
	some scope.Array
	idx  int
}

func (i *idx) link() object.Object {
	switch a := i.some.(type) {
	case *arr:
		return a.link
	case *dynarr:
		return a.link
	default:
		panic(0)
	}
}

func (i *idx) base() (object.Type, object.ComplexType) {
	switch a := i.link().Complex().(type) {
	case object.ArrayType:
		return a.Base(), a.Complex()
	case object.DynArrayType:
		return a.Base(), nil
	default:
		panic(0)
	}
}

func (i *idx) val() []interface{} {
	switch a := i.some.(type) {
	case *arr:
		return a.val
	case *dynarr:
		return a.val
	default:
		panic(0)
	}
}

func (r *rec) String() string {
	return r.link.Name()
}

func (r *rec) Id() cp.ID {
	return r.link.Adr()
}

func (r *rec) Set(v scope.Value) {
	panic(0)
}

func (r *rec) Get(id cp.ID) scope.Value {
	k := r.l.k[id]
	if r.l.v[k] == nil { //ref
		fmt.Println(r.Id(), id)
		assert.For(r.l.r[k] != nil, 20, id, k)
		return r.l.r[k]
	} else {
		return r.l.v[k]
	}
}

func newRec(o object.Object) *rec {
	_, ok := o.Complex().(object.RecordType)
	assert.For(ok, 20)
	return &rec{link: o}
}

func (p *proc) String() string {
	return fmt.Sprint(p.link.Adr(), p.link.Name())
}

func (x *data) Id() cp.ID { return x.link.Adr() }

func (x *arr) Id() cp.ID { return x.link.Adr() }

func (x *dynarr) Id() cp.ID { return x.link.Adr() }

func (a *arr) Set(v scope.Value) {
	switch x := v.(type) {
	case *arr:
		a.Set(STRING(x.tryString()))
	case STRING:
		v := make([]interface{}, int(a.length))
		for i := 0; i < int(a.length) && i < len(x); i++ {
			v[i] = CHAR(x[i])
		}
		a.val = v
	case SHORTSTRING:
		v := make([]interface{}, int(a.length))
		for i := 0; i < int(a.length) && i < len(x); i++ {
			v[i] = SHORTCHAR(x[i])
		}
		a.val = v
	default:
		halt.As(100, reflect.TypeOf(x))
	}
}

func (a *dynarr) Set(v scope.Value) {
	switch x := v.(type) {
	case *data:
		a.Set(vfrom(x))
	case *arr:
		a.val = x.val
	case *dynarr:
		a.val = x.val
	case *idx:
		a.Set(x.Get())
	case STRING:
		z := []rune(string(x))
		v := make([]interface{}, len(z)+1)
		for i := 0; i < len(z); i++ {
			v[i] = CHAR(z[i])
		}
		if len(v) > 1 {
			v[len(v)-1] = CHAR(0)
		}
		a.val = v
	case SHORTSTRING:
		z := []rune(string(x))
		v := make([]interface{}, len(z)+1)
		for i := 0; i < len(z); i++ {
			v[i] = SHORTCHAR(z[i])
		}
		if len(v) > 0 {
			v[len(v)-1] = SHORTCHAR(0)
		}
		a.val = v
	case INTEGER:
		a.val = make([]interface{}, int(x))
	default:
		halt.As(100, reflect.TypeOf(x))
	}
}

func (a *arr) tryString() (ret string) {
	stop := false
	for i := 0; !stop && i < len(a.val) && a.val[i] != nil; i++ {
		switch x := a.val[i].(type) {
		case CHAR:
			stop = int(x) == 0
			if !stop {
				ret = fmt.Sprint(ret, string([]rune{rune(x)}))
			}
		case SHORTCHAR:
			stop = int(x) == 0
			if !stop {
				ret = fmt.Sprint(ret, string([]rune{rune(x)}))
			}
		default:
			halt.As(100, reflect.TypeOf(x))
		}
	}
	return ret
}

func (a *arr) String() (ret string) {
	ret = fmt.Sprint("array", "[", a.length, "]")
	for i := 0; i < len(a.val) && a.val[i] != nil; i++ {
		switch x := a.val[i].(type) {
		case CHAR:
			ret = fmt.Sprint(ret, string([]rune{rune(x)}))
		case SHORTCHAR:
			ret = fmt.Sprint(ret, string([]rune{rune(x)}))
		case REAL:
			ret = fmt.Sprint(ret, ", ", a.val[i])
		default:
			halt.As(100, reflect.TypeOf(x))
		}
	}
	return ret
}

//возвращает *idx
func (a *arr) Get(id scope.Value) scope.Value {
	switch i := id.(type) {
	case *data:
		return a.Get(i.val.(scope.Value))
	case INTEGER:
		assert.For(int64(i) < a.length, 20)
		if len(a.val) == 0 {
			a.val = make([]interface{}, int(a.length))
		}
		return &idx{some: a, idx: int(i)}
	default:
		halt.As(100, reflect.TypeOf(i))
	}
	panic(0)
}

//возвращает *idx
func (a *dynarr) Get(id scope.Value) scope.Value {
	switch i := id.(type) {
	case *data:
		return a.Get(i.val.(scope.Value))
	case INTEGER:
		assert.For(int(i) < len(a.val), 20)
		if len(a.val) == 0 {
			panic(0)
		}
		return &idx{some: a, idx: int(i)}
	default:
		halt.As(100, reflect.TypeOf(i))
	}
	panic(0)
}

func (i *idx) Id() cp.ID {
	return i.some.Id()
}

func (i *idx) String() string {
	return fmt.Sprint("@", i.Id(), "[", i.idx, "]")
}

func (i *idx) Set(v scope.Value) {
	t := i.link().Complex()
	switch x := v.(type) {
	case *idx:
		var comp object.Type = object.NOTYPE
		switch xt := x.link().Complex().(type) {
		case object.ArrayType:
			comp = xt.Base()
		case object.DynArrayType:
			comp = xt.Base()
		default:
			halt.As(100, xt)
		}
		if comp != object.COMPLEX {
			i.val()[i.idx] = x.val()[x.idx]
		} else {
			switch z := x.val()[x.idx].(type) {
			case *arr:
				t := z.link.Complex().(object.ArrayType).Base()
				switch t {
				case object.CHAR:
					i.val()[i.idx].(*arr).Set(STRING(z.tryString()))
				default:
					halt.As(100, t)
				}
			default:
				halt.As(100, reflect.TypeOf(z))
			}
		}
	case *data:
		i.Set(x.val.(scope.Value))
	case CHAR:
		i.val()[i.idx] = x
	case STRING:
		_ = t.(object.ArrayType)
		i.val()[i.idx].(*arr).Set(x)
	case REAL:
		i.val()[i.idx] = x
	default:
		halt.As(100, reflect.TypeOf(x), x, t)
	}
}

func (i *idx) Get() scope.Value {
	x := i.val()[i.idx]
	switch z := x.(type) {
	case *arr:
		return z
	case CHAR:
		return z
	case nil:
		b := i.link().Complex().(object.ArrayType).Base()
		switch b {
		case object.CHAR:
			return CHAR(rune(0))
		default:
			halt.As(101, reflect.TypeOf(b))
		}
	default:
		halt.As(100, i.idx, reflect.TypeOf(z))
	}
	panic(0)
}

func (a *dynarr) tryString() (ret string) {
	stop := false
	for i := 0; !stop && i < len(a.val) && a.val[i] != nil; i++ {
		switch x := a.val[i].(type) {
		case CHAR:
			stop = int(x) == 0
			if !stop {
				ret = fmt.Sprint(ret, string([]rune{rune(x)}))
			}
		case SHORTCHAR:
			stop = int(x) == 0
			if !stop {
				ret = fmt.Sprint(ret, string([]rune{rune(x)}))
			}
		default:
			halt.As(100, reflect.TypeOf(x))
		}
	}
	return ret
}

func (a *dynarr) String() (ret string) {
	ret = fmt.Sprint("dyn array")
	for i := 0; i < len(a.val) && a.val[i] != nil; i++ {
		switch x := a.val[i].(type) {
		case CHAR:
			ret = fmt.Sprint(ret, string([]rune{rune(x)}))
		case SHORTCHAR:
			ret = fmt.Sprint(ret, string([]rune{rune(x)}))
		default:
			halt.As(100, reflect.TypeOf(x))
		}
	}
	return ret
}

func (d *data) Set(v scope.Value) {
	utils.PrintScope("set data")
	switch x := v.(type) {
	case *data:
		if d.link.Type() == x.link.Type() {
			d.val = x.val
		} else {
			d.Set(x.val.(scope.Value))
		}
	case *proc:
		assert.For(d.link.Type() == object.COMPLEX, 20)
		t, ok := d.link.Complex().(object.BasicType)
		assert.For(ok, 21, reflect.TypeOf(d.link.Complex()))
		assert.For(t.Type() == object.PROCEDURE, 22)
		d.val = x
	case *idx:
		d.val = x.val()[x.idx]
	case INTEGER:
		switch d.link.Type() {
		case object.INTEGER:
			d.val = x
		case object.LONGINT:
			d.val = LONGINT(x)
		case object.REAL:
			d.val = REAL(x)
		default:
			halt.As(20, d.link.Type())
		}
	case BOOLEAN:
		assert.For(d.link.Type() == object.BOOLEAN, 20)
		d.val = x
	case SHORTCHAR:
		assert.For(d.link.Type() == object.SHORTCHAR, 20)
		d.val = x
	case CHAR:
		assert.For(d.link.Type() == object.CHAR, 20)
		d.val = x
	case SHORTINT:
		assert.For(d.link.Type() == object.SHORTINT, 20)
		d.val = x
	case LONGINT:
		assert.For(d.link.Type() == object.LONGINT, 20)
		d.val = x
	case BYTE:
		assert.For(d.link.Type() == object.BYTE, 20)
		d.val = x
	case SET:
		assert.For(d.link.Type() == object.SET, 20)
		d.val = x
	case REAL:
		assert.For(d.link.Type() == object.REAL, 20)
		d.val = x
	case SHORTREAL:
		assert.For(d.link.Type() == object.SHORTREAL, 20)
		d.val = x
	default:
		panic(fmt.Sprintln(reflect.TypeOf(x)))
	}
}

func (d *data) String() string {
	return fmt.Sprint(d.link.Name(), "=", d.val)
}

func (p *ptr) String() string {
	if p.link.Complex() != nil {
		return fmt.Sprint("pointer ", p.link.Complex().(object.PointerType).Name(), "&", p.val)
	} else {
		return fmt.Sprint("pointer simple", p.link.Type())
	}
}

func (p *ptr) Id() cp.ID { return p.link.Adr() }

func (p *ptr) Set(v scope.Value) {
	switch x := v.(type) {
	case *ptr:
		p.Set(x.val)
	case *ptrValue:
		p.val = x
	case PTR:
		assert.For(x == NIL, 40)
		p.val = nil
	default:
		halt.As(100, reflect.TypeOf(x))
	}
}

func (p *ptr) Get() scope.Value {
	if p.val == nil {
		return NIL
	} else {
		return p.val.scope.Select(p.val.id)
	}
}

func newPtr(o object.Object) scope.Variable {
	_, ok := o.Complex().(object.PointerType)
	assert.For(ok, 20)
	return &ptr{link: o}
}

type ptrValue struct {
	scope *area
	id    cp.ID
	link  object.Object
}

func (p *ptrValue) String() string {
	return fmt.Sprint(p.id)
}

type PTR int

func (p PTR) String() string {
	return "NIL"
}

const NIL PTR = 0

type INTEGER int32
type BOOLEAN bool
type BYTE int8
type SHORTINT int16
type LONGINT int64
type SET struct {
	bits *big.Int
}
type CHAR rune
type REAL float64
type SHORTREAL float32
type SHORTCHAR rune
type STRING string
type SHORTSTRING string

func (x SHORTSTRING) String() string { return string(x) }
func (x STRING) String() string      { return string(x) }
func (x SHORTCHAR) String() string   { return fmt.Sprint(rune(x)) }
func (x SHORTREAL) String() string   { return fmt.Sprint(float32(x)) }
func (x REAL) String() string        { return fmt.Sprint(float64(x)) }
func (x CHAR) String() string        { return fmt.Sprint(rune(x)) }
func (x SET) String() string         { return fmt.Sprint(x.bits) }
func (x LONGINT) String() string     { return fmt.Sprint(int64(x)) }
func (x SHORTINT) String() string    { return fmt.Sprint(int16(x)) }
func (x BYTE) String() string        { return fmt.Sprint(int8(x)) }
func (x INTEGER) String() string     { return fmt.Sprint(int32(x)) }
func (x BOOLEAN) String() string     { return fmt.Sprint(bool(x)) }

func newData(o object.Object) (ret scope.Variable) {
	switch o.Type() {
	case object.INTEGER:
		ret = &data{link: o, val: INTEGER(0)}
	case object.BOOLEAN:
		ret = &data{link: o, val: BOOLEAN(false)}
	case object.BYTE:
		ret = &data{link: o, val: BYTE(0)}
	case object.CHAR:
		ret = &data{link: o, val: CHAR(0)}
	case object.LONGINT:
		ret = &data{link: o, val: LONGINT(0)}
	case object.SHORTINT:
		ret = &data{link: o, val: SHORTINT(0)}
	case object.SET:
		ret = &data{link: o, val: SET{bits: big.NewInt(0)}}
	case object.REAL:
		ret = &data{link: o, val: REAL(0)}
	case object.SHORTREAL:
		ret = &data{link: o, val: SHORTREAL(0)}
	case object.SHORTCHAR:
		ret = &data{link: o, val: SHORTCHAR(0)}
	case object.COMPLEX:
		switch t := o.Complex().(type) {
		case object.BasicType:
			switch t.Type() {
			case object.PROCEDURE:
				ret = &data{link: o, val: nil}
			default:
				halt.As(100, t.Type())
			}
		case object.ArrayType:
			ret = &arr{link: o, length: t.Len()}
			if a := ret.(*arr); t.Base() == object.COMPLEX {
				a.val = make([]interface{}, int(t.Len()))
				for i := 0; i < int(t.Len()); i++ {
					fake := object.New(object.VARIABLE, cp.Some())
					fake.SetName("[?]")
					fake.SetType(object.COMPLEX)
					fake.SetComplex(t.Complex())
					a.val[i] = newData(fake)
				}
			}
		case object.DynArrayType:
			ret = &dynarr{link: o}
		default:
			halt.As(100, reflect.TypeOf(t))
		}
	case object.NOTYPE:
		switch t := o.Complex().(type) {
		case nil:
			ret = &ptr{link: o}
		default:
			halt.As(100, reflect.TypeOf(t))
		}
	default:
		panic(fmt.Sprintln("unsupported type", o, o.Type(), o.Complex()))
	}
	return ret
}

func fromg(x interface{}) scope.Value {
	switch x := x.(type) {
	case int32:
		return INTEGER(x)
	case bool:
		return BOOLEAN(x)
	case *big.Int:
		return SET{bits: x}
	case string:
		return STRING(x)
	case float64:
		return REAL(x)
	default:
		halt.As(100, reflect.TypeOf(x))
	}
	panic(100)
}

func newProc(o object.Object) scope.Value {
	p, ok := o.(object.ProcedureObject)
	assert.For(ok, 20, reflect.TypeOf(o))
	return &proc{link: p}
}

func newConst(n node.Node) scope.Value {
	switch x := n.(type) {
	case node.ConstantNode:
		switch x.Type() {
		case object.INTEGER:
			return INTEGER(x.Data().(int32))
		case object.REAL:
			return REAL(x.Data().(float64))
		case object.BOOLEAN:
			return BOOLEAN(x.Data().(bool))
		case object.SHORTCHAR:
			return SHORTCHAR(x.Data().(rune))
		case object.LONGINT:
			return LONGINT(x.Data().(int64))
		case object.SHORTINT:
			return SHORTINT(x.Data().(int16))
		case object.SHORTREAL:
			return SHORTREAL(x.Data().(float32))
		case object.BYTE:
			return BYTE(x.Data().(int8))
		case object.SET:
			return SET{bits: x.Data().(*big.Int)}
		case object.CHAR:
			return CHAR(x.Data().(rune))
		case object.STRING:
			return STRING(x.Data().(string))
		case object.SHORTSTRING:
			return SHORTSTRING(x.Data().(string))
		case object.NIL:
			return NIL
		case object.COMPLEX: //не может существовать в реальности, используется для передачи параметров от рантайма
			switch d := x.Data().(type) {
			case *ptrValue:
				return d
			default:
				halt.As(100, reflect.TypeOf(d))
			}
		default:
			panic(fmt.Sprintln(x.Type()))
		}
	}
	panic(0)
}

func vfrom(v scope.Value) scope.Value {
	switch n := v.(type) {
	case *data:
		switch n.link.Type() {
		case object.INTEGER:
			return n.val.(INTEGER)
		case object.BYTE:
			return n.val.(BYTE)
		case object.CHAR:
			return n.val.(CHAR)
		case object.SET:
			return n.val.(SET)
		case object.BOOLEAN:
			return n.val.(BOOLEAN)
		case object.REAL:
			return n.val.(REAL)
		case object.LONGINT:
			return n.val.(LONGINT)
		default:
			halt.As(100, n.link.Type())
		}
	case INTEGER, CHAR:
		return n
	default:
		halt.As(100, reflect.TypeOf(n))
	}
	return nil
}

func gfrom(v scope.Value) interface{} {
	switch n := v.(type) {
	case *data:
		if n.val == nil {
			return nil
		} else {
			return gfrom(n.val.(scope.Value))
		}
	case *rec:
		return n
	case *proc:
		return n.link
	case *dynarr:
		switch n.link.Complex().(object.DynArrayType).Base() {
		case object.SHORTCHAR:
			if n.val != nil {
				return n.tryString()
			} else {
				return ""
			}
		case object.CHAR:
			if n.val != nil {
				return n.tryString()
			} else {
				return ""
			}
		default:
			halt.As(100, n.link.Complex().(object.DynArrayType).Base())
		}
		panic(0)
	case *arr:
		switch n.link.Complex().(object.ArrayType).Base() {
		case object.SHORTCHAR:
			if n.val != nil {
				return n.tryString()
			} else {
				return ""
			}
		case object.CHAR:
			if n.val != nil {
				return n.tryString()
			} else {
				return ""
			}
		case object.REAL:
			ret := make([]float64, 0)
			for i := 0; i < len(n.val) && n.val[i] != nil; i++ {
				ret = append(ret, float64(n.val[i].(REAL)))
			}
			return ret
		default:
			halt.As(100, n.link.Complex().(object.ArrayType).Base())
		}
		panic(0)
	case *idx:
		switch t := n.link().Complex().(type) {
		case object.ArrayType:
			switch t.Base() {
			case object.CHAR:
				return rune(n.Get().(CHAR))
			default:
				halt.As(100, t.Base())
			}
		case object.DynArrayType:
			switch t.Base() {
			case object.CHAR:
				return rune(n.Get().(CHAR))
			default:
				halt.As(100, t.Base())
			}
		default:
			halt.As(100, reflect.TypeOf(t))
		}
		panic(0)
	case PTR:
		assert.For(n == NIL, 40)
		return nil
	case INTEGER:
		return int32(n)
	case BOOLEAN:
		return bool(n)
	case STRING:
		return string(n)
	case CHAR:
		return rune(n)
	default:
		halt.As(100, reflect.TypeOf(n))
	}
	return nil
}

type ops struct{}

func (o *ops) Sum(a, b scope.Value) scope.Value {
	switch a.(type) {
	case *data:
		return o.Sum(vfrom(a), b)
	default:
		switch b.(type) {
		case *data:
			return o.Sum(a, vfrom(b))
		default:
			switch x := a.(type) {
			case INTEGER:
				switch y := b.(type) {
				case INTEGER:
					return INTEGER(int32(x) + int32(y))
				default:
					panic(fmt.Sprintln(reflect.TypeOf(y)))
				}
			case SET:
				switch y := b.(type) {
				case SET:
					res := big.NewInt(0)
					for i := 0; i < 64; i++ {
						if x.bits.Bit(i) == 1 {
							res.SetBit(res, i, 1)
						}
						if y.bits.Bit(i) == 1 {
							res.SetBit(res, i, 1)
						}
					}
					return SET{bits: res}
				case INTEGER: // INCL(SET, INTEGER)
					return SET{bits: x.bits.SetBit(x.bits, int(y), 1)}
				default:
					panic(fmt.Sprintln(reflect.TypeOf(y)))
				}
			case *arr:
				switch y := b.(type) {
				case *arr:
					switch {
					case x.link.Type() == y.link.Type() && x.link.Complex().(object.ArrayType).Base() == object.CHAR:
						return STRING(x.tryString() + y.tryString())
					default:
						halt.As(100, x.link.Type(), y.link.Type())
					}
				case STRING:
					switch {
					case x.link.Complex().(object.ArrayType).Base() == object.CHAR:
						return STRING(x.tryString() + string(y))
					default:
						halt.As(100, x.link.Type())
					}
				default:
					panic(fmt.Sprintln(reflect.TypeOf(y)))
				}
			case *dynarr:
				switch y := b.(type) {
				case STRING:
					switch {
					case x.link.Complex().(object.DynArrayType).Base() == object.CHAR:
						return STRING(x.tryString() + string(y))
					default:
						halt.As(100, x.link.Type())
					}
				default:
					panic(fmt.Sprintln(reflect.TypeOf(y)))
				}
			case STRING:
				switch y := b.(type) {
				case STRING:
					return STRING(string(x) + string(y))
				default:
					halt.As(100, reflect.TypeOf(y))
				}
			case REAL:
				switch y := b.(type) {
				case REAL:
					return REAL(x + y)
				default:
					halt.As(100, reflect.TypeOf(y))
				}
			case LONGINT:
				switch y := b.(type) {
				case LONGINT:
					return LONGINT(x + y)
				default:
					halt.As(100, reflect.TypeOf(y))
				}
			default:
				panic(fmt.Sprintln(reflect.TypeOf(x)))
			}
		}
	}
	panic(0)
}

func (o *ops) Sub(a, b scope.Value) scope.Value {
	switch a.(type) {
	case *data:
		return o.Sub(vfrom(a), b)
	default:
		switch b.(type) {
		case *data:
			return o.Sub(a, vfrom(b))
		default:
			switch x := a.(type) {
			case INTEGER:
				switch y := b.(type) {
				case INTEGER:
					return INTEGER(int32(x) - int32(y))
				default:
					panic(fmt.Sprintln(reflect.TypeOf(y)))
				}
			case REAL:
				switch y := b.(type) {
				case REAL:
					return REAL(x - y)
				default:
					panic(fmt.Sprintln(reflect.TypeOf(y)))
				}
			case LONGINT:
				switch y := b.(type) {
				case LONGINT:
					return INTEGER(int64(x) - int64(y))
				default:
					panic(fmt.Sprintln(reflect.TypeOf(y)))
				}
			case SET:
				switch y := b.(type) {
				case SET:
					res := big.NewInt(0).Set(x.bits)
					for i := 0; i < 64; i++ {
						if y.bits.Bit(i) == 1 {
							res.SetBit(res, i, 0)
						}
					}
					return SET{bits: res}
				case INTEGER:
					null := big.NewInt(0)
					res := null.SetBit(x.bits, int(y), 0)
					return SET{bits: res}
				default:
					panic(fmt.Sprintln(reflect.TypeOf(y)))
				}
			default:
				panic(fmt.Sprintln(reflect.TypeOf(x)))
			}
		}
	}
	panic(0)
}

func (o *ops) In(a, b scope.Value) scope.Value {
	switch a.(type) {
	case *data:
		return o.In(vfrom(a), b)
	default:
		switch b.(type) {
		case *data:
			return o.In(a, vfrom(b))
		default:
			switch x := a.(type) {
			case INTEGER:
				switch y := b.(type) {
				case SET:
					assert.For(int(x) < 64, 20)
					return BOOLEAN(y.bits.Bit(int(x)) == 1)
				default:
					panic(fmt.Sprintln(reflect.TypeOf(y)))
				}
			default:
				panic(fmt.Sprintln(reflect.TypeOf(x)))
			}
		}
	}
	panic(0)
}

func (o *ops) Min(a, b scope.Value) scope.Value {
	switch a.(type) {
	case *data:
		return o.Min(vfrom(a), b)
	default:
		switch b.(type) {
		case *data:
			return o.Min(a, vfrom(b))
		default:
			switch x := a.(type) {
			case INTEGER:
				switch y := b.(type) {
				case INTEGER:
					return INTEGER(int32(math.Min(float64(x), float64(y))))
				default:
					panic(fmt.Sprintln(reflect.TypeOf(y)))
				}
			default:
				panic(fmt.Sprintln(reflect.TypeOf(x)))
			}
		}
	}
	panic(0)
}

func (o *ops) Max(a, b scope.Value) scope.Value {
	switch a.(type) {
	case *data:
		return o.Max(vfrom(a), b)
	default:
		switch b.(type) {
		case *data:
			return o.Max(a, vfrom(b))
		default:
			switch x := a.(type) {
			case INTEGER:
				switch y := b.(type) {
				case INTEGER:
					return INTEGER(int32(math.Max(float64(x), float64(y))))
				default:
					panic(fmt.Sprintln(reflect.TypeOf(y)))
				}
			default:
				panic(fmt.Sprintln(reflect.TypeOf(x)))
			}
		}
	}
	panic(0)
}

func (o *ops) And(a, b scope.Value) scope.Value {
	switch a.(type) {
	case *data:
		return o.And(vfrom(a), b)
	default:
		switch b.(type) {
		case *data:
			return o.And(a, vfrom(b))
		default:
			switch x := a.(type) {
			case BOOLEAN:
				switch y := b.(type) {
				case BOOLEAN:
					return BOOLEAN(x && y)
				default:
					panic(fmt.Sprintln(reflect.TypeOf(y)))
				}
			default:
				panic(fmt.Sprintln(reflect.TypeOf(x)))
			}
		}
	}
	panic(0)
}

func (o *ops) Or(a, b scope.Value) scope.Value {
	switch a.(type) {
	case *data:
		return o.Or(vfrom(a), b)
	default:
		switch b.(type) {
		case *data:
			return o.Or(a, vfrom(b))
		default:
			switch x := a.(type) {
			case BOOLEAN:
				switch y := b.(type) {
				case BOOLEAN:
					return BOOLEAN(x || y)
				default:
					panic(fmt.Sprintln(reflect.TypeOf(y)))
				}
			default:
				panic(fmt.Sprintln(reflect.TypeOf(x)))
			}
		}
	}
	panic(0)
}

func (o *ops) Ash(a, b scope.Value) scope.Value {
	switch a.(type) {
	case *data:
		return o.Ash(vfrom(a), b)
	default:
		switch b.(type) {
		case *data:
			return o.Ash(a, vfrom(b))
		default:
			switch x := a.(type) {
			case INTEGER:
				switch y := b.(type) {
				case INTEGER:
					return INTEGER(x << uint(y))
				default:
					panic(fmt.Sprintln(reflect.TypeOf(y)))
				}
			default:
				panic(fmt.Sprintln(reflect.TypeOf(x)))
			}
		}
	}
	panic(0)
}

func (o *ops) Div(a, b scope.Value) scope.Value {
	switch a.(type) {
	case *data:
		return o.Div(vfrom(a), b)
	default:
		switch b.(type) {
		case *data:
			return o.Div(a, vfrom(b))
		default:
			switch x := a.(type) {
			case INTEGER:
				switch y := b.(type) {
				case INTEGER:
					return INTEGER(math.Floor(float64(x) / float64(y)))
				default:
					panic(fmt.Sprintln(reflect.TypeOf(y)))
				}
			case LONGINT:
				switch y := b.(type) {
				case LONGINT:
					return LONGINT(x / y)
				default:
					panic(fmt.Sprintln(reflect.TypeOf(y)))
				}
			default:
				panic(fmt.Sprintln(reflect.TypeOf(x)))
			}
		}
	}
	panic(0)
}

func (o *ops) Mod(a, b scope.Value) scope.Value {
	switch a.(type) {
	case *data:
		return o.Mod(vfrom(a), b)
	default:
		switch b.(type) {
		case *data:
			return o.Mod(a, vfrom(b))
		default:
			switch x := a.(type) {
			case INTEGER:
				switch y := b.(type) {
				case INTEGER:
					z := x % y
					switch {
					case (x < 0) != (y < 0):
						z = z + y
					}
					return INTEGER(z)
				default:
					panic(fmt.Sprintln(reflect.TypeOf(y)))
				}
			case LONGINT:
				switch y := b.(type) {
				case LONGINT:
					return LONGINT(x % y)
				default:
					panic(fmt.Sprintln(reflect.TypeOf(y)))
				}
			default:
				panic(fmt.Sprintln(reflect.TypeOf(x)))
			}
		}
	}
	panic(0)
}

func (o *ops) Mult(a, b scope.Value) scope.Value {
	switch a.(type) {
	case *data:
		return o.Mult(vfrom(a), b)
	default:
		switch b.(type) {
		case *data:
			return o.Mult(a, vfrom(b))
		default:
			switch x := a.(type) {
			case INTEGER:
				switch y := b.(type) {
				case INTEGER:
					return INTEGER(x * y)
				default:
					panic(fmt.Sprintln(reflect.TypeOf(y)))
				}
			case REAL:
				switch y := b.(type) {
				case REAL:
					return REAL(x * y)
				default:
					panic(fmt.Sprintln(reflect.TypeOf(y)))
				}
			case SET:
				switch y := b.(type) {
				case SET:
					res := big.NewInt(0)
					for i := 0; i < 64; i++ {
						if x.bits.Bit(i) == 1 && y.bits.Bit(i) == 1 {
							res.SetBit(res, i, 1)
						}
					}
					return SET{bits: res}
				default:
					panic(fmt.Sprintln(reflect.TypeOf(y)))
				}
			default:
				panic(fmt.Sprintln(reflect.TypeOf(x)))
			}
		}
	}
	panic(0)
}

func (o *ops) Divide(a, b scope.Value) scope.Value {
	switch a.(type) {
	case *data:
		return o.Divide(vfrom(a), b)
	default:
		switch b.(type) {
		case *data:
			return o.Divide(a, vfrom(b))
		default:
			switch x := a.(type) {
			case INTEGER:
				switch y := b.(type) {
				case INTEGER:
					return REAL(float64(x) / float64(y))
				default:
					panic(fmt.Sprintln(reflect.TypeOf(y)))
				}
			case REAL:
				switch y := b.(type) {
				case REAL:
					return REAL(float64(x) / float64(y))
				default:
					panic(fmt.Sprintln(reflect.TypeOf(y)))
				}
			case SET:
				switch y := b.(type) {
				case SET:
					res := big.NewInt(0)
					for i := 0; i < 64; i++ {
						if x.bits.Bit(i) != y.bits.Bit(i) {
							res.SetBit(res, i, 1)
						}
					}
					return SET{bits: res}
				default:
					panic(fmt.Sprintln(reflect.TypeOf(y)))
				}
			default:
				panic(fmt.Sprintln(reflect.TypeOf(x)))
			}
		}
	}
	panic(0)
}

func (o *ops) Len(a object.Object, _a, _b scope.Value) (ret scope.Value) {
	//assert.For(a != nil, 20)
	assert.For(_b != nil, 21)
	var b int32 = gfrom(_b).(int32)
	assert.For(b == 0, 22)
	if a != nil {
		assert.For(a.Type() == object.COMPLEX, 23)
		switch typ := a.Complex().(type) {
		case object.ArrayType:
			ret = INTEGER(int32(typ.Len()))
		case object.DynArrayType:
			switch t := _a.(type) {
			case *arr:
				ret = INTEGER(t.length)
			case *dynarr:
				ret = INTEGER(len(t.val))
			default:
				halt.As(100, "unsupported", reflect.TypeOf(t))
			}
		default:
			panic(fmt.Sprintln("unsupported", reflect.TypeOf(a.Complex())))
		}
	} else {
		switch a := _a.(type) {
		case *arr:
			ret = INTEGER(int32(a.length))
		case *dynarr:
			ret = INTEGER(int32(len(a.val)))
		case STRING:
			rs := []rune(string(a))
			ln := len(rs)
			ret = INTEGER(0)
			for l := 0; l < ln && rs[l] != 0; l++ {
				ret = INTEGER(l + 1)
			}
		default:
			panic(fmt.Sprintln("unsupported", reflect.TypeOf(a)))
		}
	}
	return ret
}

func (o *ops) Is(a scope.Value, typ object.ComplexType) scope.Value {
	var compare func(x, a object.ComplexType) bool
	compare = func(_x, _a object.ComplexType) bool {
		switch x := _x.(type) {
		case object.RecordType:
			switch a := _a.(type) {
			case object.RecordType:
				switch {
				case x.Name() == a.Name():
					//	fmt.Println("eq")
					//fmt.Println("qid ", _x.Qualident(), _a.Qualident(), "names ", x.Name(), a.Name())
					return true //опасно сравнивать имена конеш
				case x.Base() != nil:
					//	fmt.Println("go base")
					return compare(x.Base(), a)
				default:
					return false
				}
			case object.PointerType:
				if a.Base() != nil {
					return compare(x, a.Base())
				} else {
					fmt.Println("here")
					return false
				}
			default:
				halt.As(100, reflect.TypeOf(a))
			}
		case object.PointerType:
			switch a := _a.(type) {
			case object.PointerType:
				switch {
				case x.Name() == a.Name():
					//	fmt.Println("eq")
					return true //опасно сравнивать имена конеш
				case x.Base() != nil:
					//	fmt.Println("go base")
					return compare(x.Base(), a)
				default:
					return false
				}
			default:
				halt.As(100, reflect.TypeOf(a))
			}
		default:
			halt.As(100, reflect.TypeOf(a))
		}
		panic(0)
	}
	switch x := a.(type) {
	case *rec:
		z, a := x.link.Complex().(object.RecordType)
		y, b := typ.(object.RecordType)
		//fmt.Println("compare rec", x.link.Complex(), typ, a, b, a && b && compare(z, y))
		return BOOLEAN(a && b && compare(z, y))
	case *ptr:
		z, a := x.link.Complex().(object.PointerType)
		if val := x.Get(); z.Name() == "ANYPTR" && val != NIL {
			t, c := o.TypeOf(val)
			assert.For(t == object.COMPLEX, 40)
			z, a = c.(object.RecordType)
		}
		y, b := typ.(object.PointerType)
		//fmt.Println("compare ptr", z, typ, a, b, a && b && compare(z, y))
		return BOOLEAN(a && b && compare(z, y))
	default:
		halt.As(100, reflect.TypeOf(x))
	}
	panic(0)
}

func (o *ops) Conv(a scope.Value, typ object.Type, comp ...object.ComplexType) scope.Value {
	switch typ {
	case object.INTEGER:
		switch x := a.(type) {
		case *data:
			return o.Conv(vfrom(x), typ, comp...)
		case *idx:
			//t, c := x.base()
			return o.Conv(x.val()[x.idx].(scope.Value), typ, comp...)
		case BYTE:
			return INTEGER(x)
		case SET:
			return INTEGER(x.bits.Int64())
		case REAL:
			return INTEGER(x)
		case LONGINT:
			return INTEGER(x)
		case CHAR:
			return INTEGER(x)
		default:
			halt.As(100, reflect.TypeOf(x))
		}
	case object.LONGINT:
		switch x := a.(type) {
		case *data:
			return o.Conv(vfrom(x), typ, comp...)
		case INTEGER:
			return LONGINT(x)
		case REAL:
			return LONGINT(math.Floor(float64(x)))
		default:
			halt.As(100, reflect.TypeOf(x))
		}
	case object.SET:
		switch x := a.(type) {
		case *data:
			return o.Conv(vfrom(x), typ, comp...)
		case INTEGER:
			return SET{bits: big.NewInt(int64(x))}
		default:
			halt.As(100, reflect.TypeOf(x))
		}
	case object.REAL:
		switch x := a.(type) {
		case *data:
			return o.Conv(vfrom(x), typ, comp...)
		case INTEGER:
			return REAL(float64(x))
		default:
			halt.As(100, reflect.TypeOf(x))
		}
	case object.CHAR:
		switch x := a.(type) {
		case *data:
			return o.Conv(vfrom(x), typ, comp...)
		case LONGINT:
			return CHAR(rune(x))
		case INTEGER:
			return CHAR(rune(x))
		case CHAR:
			return x
		default:
			halt.As(100, reflect.TypeOf(x))
		}
	case object.NOTYPE:
		assert.For(len(comp) > 0, 20)
		switch t := comp[0].(type) {
		case object.BasicType:
			switch t.Type() {
			case object.SHORTSTRING:
				switch x := a.(type) {
				case *dynarr:
					return SHORTSTRING(x.tryString())
				case *arr:
					return SHORTSTRING(x.tryString())
				case STRING:
					return SHORTSTRING(x)
				default:
					halt.As(100, reflect.TypeOf(x))
				}
			default:
				halt.As(100, t.Type())
			}
		default:
			halt.As(100, reflect.TypeOf(t))
		}
	default:
		halt.As(100, typ)
	}
	panic(100)
}

func (o *ops) Not(a scope.Value) scope.Value {
	switch x := a.(type) {
	case *data:
		return o.Not(vfrom(x))
	case BOOLEAN:
		return BOOLEAN(!x)
	default:
		halt.As(100, reflect.TypeOf(x))
	}
	panic(100)
}

func (o *ops) Abs(a scope.Value) scope.Value {
	switch x := a.(type) {
	case *data:
		return o.Abs(vfrom(x))
	case INTEGER:
		return INTEGER(int32(math.Abs(float64(x))))
	default:
		halt.As(100, reflect.TypeOf(x))
	}
	panic(100)
}

func (o *ops) Minus(a scope.Value) scope.Value {
	switch x := a.(type) {
	case *data:
		return o.Minus(vfrom(x))
	case INTEGER:
		return INTEGER(-x)
	case LONGINT:
		return LONGINT(-x)
	case REAL:
		return REAL(-x)
	default:
		halt.As(100, reflect.TypeOf(x))
	}
	panic(100)
}

func (o *ops) Odd(a scope.Value) scope.Value {
	switch x := a.(type) {
	case *data:
		return o.Odd(vfrom(x))
	case INTEGER:
		return BOOLEAN(int64(math.Abs(float64(x)))%2 == 1)
	case LONGINT:
		return BOOLEAN(int64(math.Abs(float64(x)))%2 == 1)
	default:
		halt.As(100, reflect.TypeOf(x))
	}
	panic(100)
}

func (o *ops) Cap(a scope.Value) scope.Value {
	switch x := a.(type) {
	case *data:
		return o.Cap(vfrom(x))
	case CHAR:
		return CHAR([]rune(strings.ToUpper(string(x)))[0])
	default:
		halt.As(100, reflect.TypeOf(x))
	}
	panic(100)
}

func (o *ops) Bits(a scope.Value) scope.Value {
	switch x := a.(type) {
	case *data:
		return o.Bits(vfrom(x))
	case INTEGER:
		return SET{bits: big.NewInt(0).SetBit(big.NewInt(0), int(x), 1)}
	default:
		halt.As(100, reflect.TypeOf(x))
	}
	panic(100)
}
func (o *ops) Eq(a, b scope.Value) scope.Value {
	switch a.(type) {
	case *data:
		return o.Eq(vfrom(a), b)
	default:
		switch b.(type) {
		case *data:
			return o.Eq(a, vfrom(b))
		default:
			switch x := a.(type) {
			case *ptr:
				switch y := b.(type) {
				case PTR:
					assert.For(y == NIL, 40)
					return BOOLEAN(x.val == nil || x.val.id == 0)
				default:
					panic(fmt.Sprintln(reflect.TypeOf(y)))
				}
			case INTEGER:
				switch y := b.(type) {
				case INTEGER:
					return BOOLEAN(x == y)
				default:
					panic(fmt.Sprintln(reflect.TypeOf(y)))
				}
			case LONGINT:
				switch y := b.(type) {
				case LONGINT:
					return BOOLEAN(x == y)
				default:
					panic(fmt.Sprintln(reflect.TypeOf(y)))
				}
			default:
				panic(fmt.Sprintln(reflect.TypeOf(x)))
			}
		}
	}
	panic(0)
}

func (o *ops) Neq(a, b scope.Value) scope.Value {
	switch i := a.(type) {
	case *data:
		return o.Neq(vfrom(a), b)
	case *idx:
		return o.Neq(vfrom(i.Get()), b)
	default:
		switch b.(type) {
		case *data:
			return o.Neq(a, vfrom(b))
		default:
			switch x := a.(type) {
			case *ptr:
				switch y := b.(type) {
				case PTR:
					assert.For(y == NIL, 40)
					return BOOLEAN(x.val != nil && x.val.id != 0)
				default:
					panic(fmt.Sprintln(reflect.TypeOf(y)))
				}
			case INTEGER:
				switch y := b.(type) {
				case INTEGER:
					return BOOLEAN(x != y)
				default:
					panic(fmt.Sprintln(reflect.TypeOf(y)))
				}
			case REAL:
				switch y := b.(type) {
				case REAL:
					return BOOLEAN(x != y)
				default:
					panic(fmt.Sprintln(reflect.TypeOf(y)))
				}
			case LONGINT:
				switch y := b.(type) {
				case LONGINT:
					return BOOLEAN(x != y)
				default:
					panic(fmt.Sprintln(reflect.TypeOf(y)))
				}
			case SET:
				switch y := b.(type) {
				case SET:
					return BOOLEAN(x.bits.Cmp(y.bits) != 0)
				default:
					panic(fmt.Sprintln(reflect.TypeOf(y)))
				}
			case BOOLEAN:
				switch y := b.(type) {
				case BOOLEAN:
					return BOOLEAN(x != y)
				default:
					panic(fmt.Sprintln(reflect.TypeOf(y)))
				}
			case CHAR:
				switch y := b.(type) {
				case CHAR:
					return BOOLEAN(x != y)
				default:
					panic(fmt.Sprintln(reflect.TypeOf(y)))
				}
			default:
				panic(fmt.Sprintln(reflect.TypeOf(x)))
			}
		}
	}
	panic(0)
}

func (o *ops) Lss(a, b scope.Value) scope.Value {
	switch a.(type) {
	case *data:
		return o.Lss(vfrom(a), b)
	default:
		switch b.(type) {
		case *data:
			return o.Lss(a, vfrom(b))
		default:
			switch x := a.(type) {
			case INTEGER:
				switch y := b.(type) {
				case INTEGER:
					return BOOLEAN(x < y)
				default:
					panic(fmt.Sprintln(reflect.TypeOf(y)))
				}
			case REAL:
				switch y := b.(type) {
				case REAL:
					return BOOLEAN(x < y)
				default:
					panic(fmt.Sprintln(reflect.TypeOf(y)))
				}
			case LONGINT:
				switch y := b.(type) {
				case LONGINT:
					return BOOLEAN(x < y)
				default:
					panic(fmt.Sprintln(reflect.TypeOf(y)))
				}
			case CHAR:
				switch y := b.(type) {
				case CHAR:
					return BOOLEAN(x < y)
				case INTEGER:
					return BOOLEAN(uint(x) < uint(y))
				default:
					panic(fmt.Sprintln(reflect.TypeOf(y)))
				}
			default:
				panic(fmt.Sprintln(reflect.TypeOf(x)))
			}
		}
	}
	panic(0)
}

func (o *ops) Gtr(a, b scope.Value) scope.Value {
	switch a.(type) {
	case *data:
		return o.Gtr(vfrom(a), b)
	default:
		switch b.(type) {
		case *data:
			return o.Gtr(a, vfrom(b))
		default:
			switch x := a.(type) {
			case INTEGER:
				switch y := b.(type) {
				case INTEGER:
					return BOOLEAN(x > y)
				default:
					panic(fmt.Sprintln(reflect.TypeOf(y)))
				}
			case STRING:
				switch y := b.(type) {
				case STRING:
					//fmt.Println(x, y, x > y)
					return BOOLEAN(x > y)
				default:
					panic(fmt.Sprintln(reflect.TypeOf(y)))
				}
			case REAL:
				switch y := b.(type) {
				case REAL:
					return BOOLEAN(x > y)
				default:
					panic(fmt.Sprintln(reflect.TypeOf(y)))
				}
			case LONGINT:
				switch y := b.(type) {
				case LONGINT:
					return BOOLEAN(x > y)
				default:
					panic(fmt.Sprintln(reflect.TypeOf(y)))
				}
			default:
				panic(fmt.Sprintln(reflect.TypeOf(x)))
			}
		}
	}
	panic(0)
}

func (o *ops) Leq(a, b scope.Value) scope.Value {
	switch a.(type) {
	case *data:
		return o.Leq(vfrom(a), b)
	default:
		switch b.(type) {
		case *data:
			return o.Leq(a, vfrom(b))
		default:
			switch x := a.(type) {
			case INTEGER:
				switch y := b.(type) {
				case INTEGER:
					return BOOLEAN(x <= y)
				default:
					panic(fmt.Sprintln(reflect.TypeOf(y)))
				}
			default:
				panic(fmt.Sprintln(reflect.TypeOf(x)))
			}
		}
	}
	panic(0)
}

func (o *ops) Geq(a, b scope.Value) scope.Value {
	switch a.(type) {
	case *data:
		return o.Geq(vfrom(a), b)
	default:
		switch b.(type) {
		case *data:
			return o.Geq(a, vfrom(b))
		default:
			switch x := a.(type) {
			case INTEGER:
				switch y := b.(type) {
				case INTEGER:
					return BOOLEAN(x >= y)
				default:
					panic(fmt.Sprintln(reflect.TypeOf(y)))
				}
			case REAL:
				switch y := b.(type) {
				case REAL:
					return BOOLEAN(x >= y)
				default:
					panic(fmt.Sprintln(reflect.TypeOf(y)))
				}
			default:
				panic(fmt.Sprintln(reflect.TypeOf(x)))
			}
		}
	}
	panic(0)
}

func (o *ops) TypeOf(x scope.Value) (object.Type, object.ComplexType) {
	switch v := x.(type) {
	case *ptr:
		//assert.For(v.val != nil, 20, v.Id())
		if v.val != nil {
			return v.val.link.Type(), v.val.link.Complex()
		} else {
			//return v.link.Type(), v.link.Complex()
		}
	case *rec:
		return v.link.Type(), v.link.Complex()
	case *dynarr:
		return v.link.Type(), v.link.Complex()
	case *arr:
		return v.link.Type(), v.link.Complex()
	case *data:
		return v.link.Type(), v.link.Complex()
	default:
		halt.As(100, reflect.TypeOf(v))
	}
	return object.NOTYPE, nil
}

func init() {
	scope.ValueFrom = vfrom
	scope.GoTypeFrom = gfrom
	scope.TypeFromGo = fromg
	scope.Ops = &ops{}
}