make strings objects

src/array.go

@@ -1,6 +1,7 @@
 package main
 
 import (
+	"fmt"
 	"strings"
 )
 
@@ -25,6 +26,122 @@ func ArArray(arr []any) ArObject {
 			"length":    newNumber().SetUint64(uint64(len(arr))),
 		},
 	}
+	val.obj["__setindex__"] = builtinFunc{
+		"__setindex__",
+		func(a ...any) (any, ArErr) {
+			if len(a) != 2 {
+				return nil, ArErr{
+					TYPE:    "TypeError",
+					message: "expected 2 arguments, got " + fmt.Sprint(len(a)),
+					EXISTS:  true,
+				}
+			}
+			if typeof(a[0]) != "number" {
+				return nil, ArErr{
+					TYPE:    "TypeError",
+					message: "index must be a number",
+					EXISTS:  true,
+				}
+			}
+			if !a[0].(number).IsInt() {
+				return nil, ArErr{
+					TYPE:    "TypeError",
+					message: "index must be an integer",
+					EXISTS:  true,
+				}
+			}
+			num := int(a[0].(number).Num().Int64())
+			if num < 0 || num >= len(arr) {
+				return nil, ArErr{
+					TYPE:    "IndexError",
+					message: "index out of range",
+					EXISTS:  true,
+				}
+			}
+			arr[num] = a[1]
+			return nil, ArErr{}
+		},
+	}
+	val.obj["__getindex__"] = builtinFunc{
+		"__getindex__",
+		func(a ...any) (any, ArErr) {
+			// a[0] is start
+			// a[1] is end
+			// a[2] is step
+			if len(a) < 0 || len(a) > 3 {
+				return nil, ArErr{"TypeError", "expected 1 to 3 arguments, got " + fmt.Sprint(len(a)), 0, "", "", true}
+			}
+			var (
+				start int = 0
+				end   any = nil
+				step  int = 1
+			)
+			{
+				if a[0] == nil {
+					start = 0
+				} else if typeof(a[0]) != "number" || !a[0].(number).IsInt() {
+					return "", ArErr{
+						TYPE:    "TypeError",
+						message: "slice index must be an integer",
+						EXISTS:  true,
+					}
+				} else {
+					start = int(a[0].(number).Num().Int64())
+				}
+			}
+			if len(a) > 1 {
+				if a[1] == nil {
+					end = len(arr)
+				} else if typeof(a[1]) != "number" || !a[1].(number).IsInt() {
+					return "", ArErr{
+						TYPE:    "TypeError",
+						message: "slice index must be an integer",
+						EXISTS:  true,
+					}
+				} else {
+					end = int(a[1].(number).Num().Int64())
+				}
+			}
+			if len(a) > 2 {
+				if a[2] == nil {
+					step = 1
+				} else if typeof(a[2]) != "number" || !a[2].(number).IsInt() {
+					return "", ArErr{
+						TYPE:    "TypeError",
+						message: "slice index must be an integer",
+						EXISTS:  true,
+					}
+				} else {
+					step = int(a[2].(number).Num().Int64())
+				}
+			}
+			if start < 0 {
+				start = len(arr) + start
+			}
+			if _, ok := end.(int); ok && end.(int) < 0 {
+				end = len(arr) + end.(int)
+			}
+			if end != nil && end.(int) > len(arr) {
+				end = len(arr)
+			}
+			if end == nil {
+				return arr[start], ArErr{}
+			} else if step == 1 {
+				return arr[start:end.(int)], ArErr{}
+			} else {
+				output := []any{}
+				if step > 0 {
+					for i := start; i < end.(int); i += step {
+						output = append(output, arr[i])
+					}
+				} else {
+					for i := end.(int) - 1; i >= start; i += step {
+						output = append(output, arr[i])
+					}
+				}
+				return output, ArErr{}
+			}
+		}}
 	val.obj["remove"] = builtinFunc{
 		"remove",
 		func(args ...any) (any, ArErr) {

src/built-ins.go

@@ -1,5 +1,7 @@
 package main
 
+import "fmt"
+
 var vars = Map(anymap{})
 
 func init() {
@@ -133,4 +135,20 @@ func init() {
 	vars.obj["json"] = ArJSON
 	vars.obj["sin"] = ArSin
 	vars.obj["arcsin"] = ArArcsin
+	vars.obj["dir"] = builtinFunc{"dir", func(a ...any) (any, ArErr) {
+		fmt.Println(a)
+		if len(a) == 0 {
+			return ArArray([]any{}), ArErr{}
+		}
+		t := AnyToArValid(a[0])
+		switch x := t.(type) {
+		case ArObject:
+			newarray := []any{}
+			for key := range x.obj {
+				newarray = append(newarray, key)
+			}
+			return ArArray(newarray), ArErr{}
+		}
+		return ArArray([]any{}), ArErr{}
+	}}
 }

src/file.go

@@ -97,71 +97,3 @@ func readtext(file *os.File) (string, error) {
 	}
 	return buf.String(), nil
 }
-
-func ArRead(args ...any) (any, ArErr) {
-	if len(args) != 1 {
-		return ArObject{}, ArErr{TYPE: "Runtime Error", message: "read takes 1 argument, got " + fmt.Sprint(len(args)), EXISTS: true}
-	}
-	if typeof(args[0]) != "string" {
-		return ArObject{}, ArErr{TYPE: "Runtime Error", message: "read takes a string not type '" + typeof(args[0]) + "'", EXISTS: true}
-	}
-	filename := args[0].(string)
-	file, err := os.Open(filename)
-	if err != nil {
-		return ArObject{}, ArErr{TYPE: "Runtime Error", message: err.Error(), EXISTS: true}
-	}
-	return Map(anymap{
-		"text": builtinFunc{"text", func(...any) (any, ArErr) {
-			text, err := readtext(file)
-			if err != nil {
-				return ArObject{}, ArErr{TYPE: "Runtime Error", message: err.Error(), EXISTS: true}
-			}
-			return ArString(text), ArErr{}
-		}},
-		"json": builtinFunc{"json", func(...any) (any, ArErr) {
-			text, err := readtext(file)
-			if err != nil {
-				return ArObject{}, ArErr{TYPE: "Runtime Error", message: err.Error(), EXISTS: true}
-			}
-			return jsonparse(text), ArErr{}
-		}},
-	}), ArErr{}
-}
-
-func ArWrite(args ...any) (any, ArErr) {
-	if len(args) != 1 {
-		return ArObject{}, ArErr{TYPE: "Runtime Error", message: "write takes 1 argument, got " + fmt.Sprint(len(args)), EXISTS: true}
-	}
-	if typeof(args[0]) != "string" {
-		return ArObject{}, ArErr{TYPE: "Runtime Error", message: "write takes a string not type '" + typeof(args[0]) + "'", EXISTS: true}
-	}
-	filename := args[0].(string)
-	file, err := os.Create(filename)
-	if err != nil {
-		return ArObject{}, ArErr{TYPE: "Runtime Error", message: err.Error(), EXISTS: true}
-	}
-	return Map(anymap{
-		"text": builtinFunc{"text", func(args ...any) (any, ArErr) {
-			if len(args) != 1 {
-				return ArObject{}, ArErr{TYPE: "Runtime Error", message: "text takes 1 argument, got " + fmt.Sprint(len(args)), EXISTS: true}
-			}
-			if typeof(args[0]) != "string" {
-				return ArObject{}, ArErr{TYPE: "Runtime Error", message: "text takes a string not type '" + typeof(args[0]) + "'", EXISTS: true}
-			}
-			file.Write([]byte(args[0].(string)))
-			return nil, ArErr{}
-		}},
-		"json": builtinFunc{"json", func(args ...any) (any, ArErr) {
-			if len(args) != 1 {
-				return ArObject{}, ArErr{TYPE: "Runtime Error", message: "json takes 1 argument, got " + fmt.Sprint(len(args)), EXISTS: true}
-			}
-			jsonstr, err := jsonstringify(args[0], 0)
-			if err != nil {
-				return ArObject{}, ArErr{TYPE: "Runtime Error", message: err.Error(), EXISTS: true}
-			}
-			file.Write([]byte(jsonstr))
-			return nil, ArErr{}
-		}},
-	}), ArErr{}
-
-}

src/getIndex.go

@@ -31,16 +31,19 @@ func mapGet(r ArMapGet, stack stack, stacklevel int) (any, ArErr) {
 	}
 	switch m := resp.(type) {
 	case ArObject:
-		switch m.TYPE {
-		case "array":
-			resp, err := getFromArArray(m, r, stack, stacklevel+1)
-			if !err.EXISTS {
-				return resp, err
-			}
-		case "string":
-			resp, err := getFromString(m.obj["__value__"].(string), r, stack, stacklevel+1)
-			if !err.EXISTS {
-				return ArString(resp), err
+		if r.index && m.TYPE != "map" {
+			if _, ok := m.obj["__getindex__"]; ok {
+				callable := m.obj["__getindex__"]
+				resp, err := runCall(call{
+					callable: callable,
+					args:     r.args,
+					line:     r.line,
+					path:     r.path,
+					code:     r.code,
+				}, stack, stacklevel+1)
+				if !err.EXISTS {
+					return resp, ArErr{}
+				}
 			}
 		}
 		if len(r.args) > 1 {
@@ -253,94 +256,3 @@ func getFromArArray(m ArObject, r ArMapGet, stack stack, stacklevel int) (any, A
 		return ArArray(output), ArErr{}
 	}
 }
-
-func getFromString(m string, r ArMapGet, stack stack, stacklevel int) (string, ArErr) {
-	var (
-		start int = 0
-		end   any = nil
-		step  int = 1
-	)
-	{
-		startval, err := runVal(r.args[0], stack, stacklevel+1)
-		if err.EXISTS {
-			return "", err
-		}
-		if startval == nil {
-			start = 0
-		} else if typeof(startval) != "number" || !startval.(number).IsInt() {
-			return "", ArErr{
-				"TypeError",
-				"slice index must be an integer",
-				r.line,
-				r.path,
-				r.code,
-				true,
-			}
-		} else {
-			start = int(startval.(number).Num().Int64())
-		}
-	}
-	if len(r.args) > 1 {
-		endval, err := runVal(r.args[1], stack, stacklevel+1)
-		if err.EXISTS {
-			return "", err
-		}
-		if endval == nil {
-			end = len(m)
-		} else if typeof(endval) != "number" && !endval.(number).IsInt() {
-			return "", ArErr{
-				"TypeError",
-				"slice ending index must be an integer",
-				r.line,
-				r.path,
-				r.code,
-				true,
-			}
-		} else {
-			end = int(endval.(number).Num().Int64())
-		}
-	}
-	if len(r.args) > 2 {
-		stepval, err := runVal(r.args[2], stack, stacklevel+1)
-		if err.EXISTS {
-			return "", err
-		}
-		if stepval == nil {
-			step = 1
-		} else if typeof(stepval) != "number" && !stepval.(number).IsInt() {
-			return "", ArErr{
-				"TypeError",
-				"slice step must be an integer",
-				r.line,
-				r.path,
-				r.code,
-				true,
-			}
-		} else {
-			step = int(stepval.(number).Num().Int64())
-		}
-	}
-	if start < 0 {
-		start = len(m) + start
-	}
-	if _, ok := end.(int); ok && end.(int) < 0 {
-		end = len(m) + end.(int)
-	}
-	if end == nil {
-		return string(m[start]), ArErr{}
-	} else if step == 1 {
-		return m[start:end.(int)], ArErr{}
-	} else {
-		output := []byte{}
-		if step > 0 {
-			for i := start; i < end.(int); i += step {
-				output = append(output, m[i])
-			}
-		} else {
-			for i := end.(int) - 1; i >= start; i += step {
-				output = append(output, m[i])
-			}
-		}
-		return string(output), ArErr{}
-	}
-}

src/parseImport.go

@@ -45,6 +45,7 @@ func parseGenericImport(code UNPARSEcode, index int, codeline []UNPARSEcode) (Ar
 
 func runImport(importOBJ ArImport, stack stack, stacklevel int) (any, ArErr) {
 	val, err := runVal(importOBJ.filePath, stack, stacklevel+1)
+	val = ArValidToAny(val)
 	if err.EXISTS {
 		return nil, err
 	}

src/string.go

@@ -1,6 +1,7 @@
 package main
 
 import (
+	"fmt"
 	"strconv"
 	"strings"
 )
@@ -50,6 +51,118 @@ func ArString(str string) ArObject {
 			"length":    newNumber().SetUint64(uint64(len(str))),
 		},
 	}
+
+	obj.obj["__setindex__"] = builtinFunc{
+		"__setindex__",
+		func(a ...any) (any, ArErr) {
+			if len(a) != 2 {
+				return nil, ArErr{"TypeError", "expected 2 arguments, got " + fmt.Sprint(len(a)), 0, "", "", true}
+			}
+			if typeof(a[0]) != "number" {
+				return nil, ArErr{"TypeError", "expected number, got " + typeof(a[0]), 0, "", "", true}
+			}
+			if typeof(a[1]) != "string" {
+				return nil, ArErr{"TypeError", "expected string, got " + typeof(a[1]), 0, "", "", true}
+			}
+			if len(a[1].(string)) != 1 {
+				return nil, ArErr{"TypeError", "expected string of length 1, got " + fmt.Sprint(len(a[1].(string))), 0, "", "", true}
+			}
+			if !a[0].(number).IsInt() {
+				return nil, ArErr{"TypeError", "expected integer, got float", 0, "", "", true}
+			}
+			index := a[0].(number).Num().Int64()
+			if index < 0 {
+				index = int64(len(str)) + index
+			}
+			if index < 0 || index >= int64(len(str)) {
+				return nil, ArErr{"IndexError", "index out of range", 0, "", "", true}
+			}
+			str = strings.Join([]string{str[:index], a[1].(string), str[index+1:]}, "")
+			obj.obj["__value__"] = str
+			obj.obj["length"] = newNumber().SetUint64(uint64(len(str)))
+			return nil, ArErr{}
+		}}
+	obj.obj["__getindex__"] = builtinFunc{
+		"__getindex__",
+		func(a ...any) (any, ArErr) {
+			// a[0] is start
+			// a[1] is end
+			// a[2] is step
+			if len(a) < 0 || len(a) > 3 {
+				return nil, ArErr{"TypeError", "expected 1 to 3 arguments, got " + fmt.Sprint(len(a)), 0, "", "", true}
+			}
+			var (
+				start int = 0
+				end   any = nil
+				step  int = 1
+			)
+			{
+				if a[0] == nil {
+					start = 0
+				} else if typeof(a[0]) != "number" || !a[0].(number).IsInt() {
+					return "", ArErr{
+						TYPE:    "TypeError",
+						message: "slice index must be an integer",
+						EXISTS:  true,
+					}
+				} else {
+					start = int(a[0].(number).Num().Int64())
+				}
+			}
+			if len(a) > 1 {
+				if a[1] == nil {
+					end = len(str)
+				} else if typeof(a[1]) != "number" || !a[1].(number).IsInt() {
+					return "", ArErr{
+						TYPE:    "TypeError",
+						message: "slice index must be an integer",
+						EXISTS:  true,
+					}
+				} else {
+					end = int(a[1].(number).Num().Int64())
+				}
+			}
+			if len(a) > 2 {
+				if a[2] == nil {
+					step = 1
+				} else if typeof(a[2]) != "number" || !a[2].(number).IsInt() {
+					return "", ArErr{
+						TYPE:    "TypeError",
+						message: "slice index must be an integer",
+						EXISTS:  true,
+					}
+				} else {
+					step = int(a[2].(number).Num().Int64())
+				}
+			}
+			if start < 0 {
+				start = len(str) + start
+			}
+			if _, ok := end.(int); ok && end.(int) < 0 {
+				end = len(str) + end.(int)
+			}
+
+			if end != nil && end.(int) > len(str) {
+				end = len(str)
+			}
+			if end == nil {
+				return string(str[start]), ArErr{}
+			} else if step == 1 {
+				return str[start:end.(int)], ArErr{}
+			} else {
+				output := []byte{}
+				if step > 0 {
+					for i := start; i < end.(int); i += step {
+						output = append(output, str[i])
+					}
+				} else {
+					for i := end.(int) - 1; i >= start; i += step {
+						output = append(output, str[i])
+					}
+				}
+				return string(output), ArErr{}
+			}
+		}}
 	obj.obj["append"] = builtinFunc{
 		"append",
 		func(a ...any) (any, ArErr) {
@@ -68,5 +181,230 @@ func ArString(str string) ArObject {
 			obj.obj["length"] = newNumber().SetUint64(uint64(len(str)))
 			return nil, ArErr{}
 		}}
+	obj.obj["extend"] = builtinFunc{
+		"extend",
+		func(a ...any) (any, ArErr) {
+			if len(a) != 1 {
+				return nil, ArErr{"TypeError", "expected 1 argument, got " + fmt.Sprint(len(a)), 0, "", "", true}
+			}
+			output := []string{str}
+			for _, v := range a {
+				if typeof(v) != "string" {
+					return nil, ArErr{"TypeError", "expected string, got " + typeof(v), 0, "", "", true}
+				}
+				output = append(output, v.(string))
+			}
+			str = strings.Join(output, "")
+			obj.obj["__value__"] = str
+			obj.obj["length"] = newNumber().SetUint64(uint64(len(str)))
+			return nil, ArErr{}
+		},
+	}
+	obj.obj["insert"] = builtinFunc{
+		"insert",
+		func(a ...any) (any, ArErr) {
+			if len(a) != 2 {
+				return nil, ArErr{"TypeError", "expected 2 argument, got " + fmt.Sprint(len(a)), 0, "", "", true}
+			}
+			if typeof(a[0]) != "number" || !a[0].(number).IsInt() {
+				return nil, ArErr{"TypeError", "expected integer, got " + typeof(a[0]), 0, "", "", true}
+			}
+			if typeof(a[1]) != "string" {
+				return nil, ArErr{"TypeError", "expected string, got " + typeof(a[1]), 0, "", "", true}
+			}
+			index := int(a[0].(number).Num().Int64())
+			if index < 0 {
+				index = len(str) + index
+			}
+			if index > len(str) {
+				index = len(str)
+			}
+			str = str[:index] + a[1].(string) + str[index:]
+			obj.obj["__value__"] = str
+			obj.obj["length"] = newNumber().SetUint64(uint64(len(str)))
+			return nil, ArErr{}
+		}}
+	obj.obj["concat"] = builtinFunc{
+		"concat",
+		func(a ...any) (any, ArErr) {
+			if len(a) == 0 {
+				return nil, ArErr{"TypeError", "expected 1 or more argument, got 0", 0, "", "", true}
+			}
+			output := []string{str}
+			for _, v := range a {
+				if typeof(v) != "string" {
+					return nil, ArErr{"TypeError", "expected string, got " + typeof(v), 0, "", "", true}
+				}
+				output = append(output, v.(string))
+			}
+			return strings.Join(output, ""), ArErr{}
+		}}
+	obj.obj["split"] = builtinFunc{
+		"split",
+		func(a ...any) (any, ArErr) {
+			if len(a) != 1 {
+				return nil, ArErr{"TypeError", "expected 1 or more argument, got " + fmt.Sprint(len(a)), 0, "", "", true}
+			}
+			if typeof(a[0]) != "string" {
+				return nil, ArErr{"TypeError", "expected string, got " + typeof(a[0]), 0, "", "", true}
+			}
+			splitby := a[0].(string)
+			output := []any{}
+			splitted := any(strings.Split(str, splitby))
+			for _, v := range splitted.([]string) {
+				output = append(output, ArString(v))
+			}
+			return output, ArErr{}
+		}}
+	obj.obj["capitalise"] = builtinFunc{
+		"capitalise",
+		func(a ...any) (any, ArErr) {
+			if len(a) != 0 {
+				return nil, ArErr{"TypeError", "expected 0 arguments, got " + fmt.Sprint(len(a)), 0, "", "", true}
+			}
+			return strings.Title(str), ArErr{}
+		}}
+	obj.obj["lower"] = builtinFunc{
+		"lower",
+		func(a ...any) (any, ArErr) {
+			if len(a) != 0 {
+				return nil, ArErr{"TypeError", "expected 0 arguments, got " + fmt.Sprint(len(a)), 0, "", "", true}
+			}
+			return strings.ToLower(str), ArErr{}
+		}}
+	obj.obj["upper"] = builtinFunc{
+		"upper",
+		func(a ...any) (any, ArErr) {
+			if len(a) != 0 {
+				return nil, ArErr{"TypeError", "expected 0 arguments, got " + fmt.Sprint(len(a)), 0, "", "", true}
+			}
+			return strings.ToUpper(str), ArErr{}
+		}}
+	obj.obj["replace"] = builtinFunc{
+		"replace",
+		func(a ...any) (any, ArErr) {
+			if len(a) != 2 {
+				return nil, ArErr{"TypeError", "expected 2 arguments, got " + fmt.Sprint(len(a)), 0, "", "", true}
+			}
+			if typeof(a[0]) != "string" {
+				return nil, ArErr{"TypeError", "expected string, got " + typeof(a[0]), 0, "", "", true}
+			}
+			if typeof(a[1]) != "string" {
+				return nil, ArErr{"TypeError", "expected string, got " + typeof(a[1]), 0, "", "", true}
+			}
+			return strings.Replace(str, a[0].(string), a[1].(string), -1), ArErr{}
+		}}
+	obj.obj["contains"] = builtinFunc{
+		"contains",
+		func(a ...any) (any, ArErr) {
+			if len(a) != 1 {
+				return nil, ArErr{"TypeError", "expected 1 argument, got " + fmt.Sprint(len(a)), 0, "", "", true}
+			}
+			if typeof(a[0]) != "string" {
+				return nil, ArErr{"TypeError", "expected string, got " + typeof(a[0]), 0, "", "", true}
+			}
+			return strings.Contains(str, a[0].(string)), ArErr{}
+		}}
+	obj.obj["startswith"] = builtinFunc{
+		"startswith",
+		func(a ...any) (any, ArErr) {
+			if len(a) != 1 {
+				return nil, ArErr{"TypeError", "expected 1 argument, got " + fmt.Sprint(len(a)), 0, "", "", true}
+			}
+			if typeof(a[0]) != "string" {
+				return nil, ArErr{"TypeError", "expected string, got " + typeof(a[0]), 0, "", "", true}
+			}
+			return strings.HasPrefix(str, a[0].(string)), ArErr{}
+		}}
+	obj.obj["endswith"] = builtinFunc{
+		"endswith",
+		func(a ...any) (any, ArErr) {
+			if len(a) != 1 {
+				return nil, ArErr{"TypeError", "expected 1 argument, got " + fmt.Sprint(len(a)), 0, "", "", true}
+			}
+			if typeof(a[0]) != "string" {
+				return nil, ArErr{"TypeError", "expected string, got " + typeof(a[0]), 0, "", "", true}
+			}
+			return strings.HasSuffix(str, a[0].(string)), ArErr{}
+		}}
+	obj.obj["index"] = builtinFunc{
+		"index",
+		func(a ...any) (any, ArErr) {
+			if len(a) != 1 {
+				return nil, ArErr{"TypeError", "expected 1 argument, got " + fmt.Sprint(len(a)), 0, "", "", true}
+			}
+			if typeof(a[0]) != "string" {
+				return nil, ArErr{"TypeError", "expected string, got " + typeof(a[0]), 0, "", "", true}
+			}
+			return strings.Index(str, a[0].(string)), ArErr{}
+		}}
+	obj.obj["rindex"] = builtinFunc{
+		"rindex",
+		func(a ...any) (any, ArErr) {
+			if len(a) != 1 {
+				return nil, ArErr{"TypeError", "expected 1 argument, got " + fmt.Sprint(len(a)), 0, "", "", true}
+			}
+			if typeof(a[0]) != "string" {
+				return nil, ArErr{"TypeError", "expected string, got " + typeof(a[0]), 0, "", "", true}
+			}
+			return strings.LastIndex(str, a[0].(string)), ArErr{}
+		}}
+	obj.obj["count"] = builtinFunc{
+		"count",
+		func(a ...any) (any, ArErr) {
+			if len(a) != 1 {
+
+				return nil, ArErr{"TypeError", "expected 1 argument, got " + fmt.Sprint(len(a)), 0, "", "", true}
+			}
+			if typeof(a[0]) != "string" {
+				return nil, ArErr{"TypeError", "expected string, got " + typeof(a[0]), 0, "", "", true}
+			}
+			return strings.Count(str, a[0].(string)), ArErr{}
+		}}
+	obj.obj["strip"] = builtinFunc{
+		"strip",
+		func(a ...any) (any, ArErr) {
+			if len(a) > 1 {
+				return nil, ArErr{"TypeError", "expected 0 or 1 arguments, got " + fmt.Sprint(len(a)), 0, "", "", true}
+			}
+			cutset := " "
+			if len(a) == 1 {
+				if typeof(a[0]) != "string" {
+					return nil, ArErr{"TypeError", "expected string, got " + typeof(a[0]), 0, "", "", true}
+				}
+				cutset = a[0].(string)
+			}
+			return strings.Trim(str, cutset), ArErr{}
+		}}
+	obj.obj["leftstrip"] = builtinFunc{
+		"leftstrip",
+		func(a ...any) (any, ArErr) {
+			if len(a) > 1 {
+				return nil, ArErr{"TypeError", "expected 0 or 1 arguments, got " + fmt.Sprint(len(a)), 0, "", "", true}
+			}
+			cutset := " "
+			if len(a) == 1 {
+				if typeof(a[0]) != "string" {
+					return nil, ArErr{"TypeError", "expected string, got " + typeof(a[0]), 0, "", "", true}
+				}
+				cutset = a[0].(string)
+			}
+			return strings.TrimLeft(str, cutset), ArErr{}
+		}}
+	obj.obj["rightstrip"] = builtinFunc{
+		"rightstrip",
+		func(a ...any) (any, ArErr) {
+			if len(a) > 1 {
+				return nil, ArErr{"TypeError", "expected 0 or 1 arguments, got " + fmt.Sprint(len(a)), 0, "", "", true}
+			}
+			cutset := " "
+			if len(a) == 1 {
+				if typeof(a[0]) != "string" {
+					return nil, ArErr{"TypeError", "expected string, got " + typeof(a[0]), 0, "", "", true}
+				}
+				cutset = a[0].(string)
+			}
+			return strings.TrimRight(str, cutset), ArErr{}
+		}}
 	return obj
 }

src/variable.go

@@ -249,12 +249,27 @@ func setVariableValue(v setVariable, stack stack, stacklevel int) (any, ArErr) {
 			}
 			switch y := respp.(type) {
 			case ArObject:
-				if isUnhashable(key) {
-					return nil, ArErr{"Runtime Error", "can't use unhashable type as map key: " + typeof(key), v.line, v.path, v.code, true}
+				if y.TYPE != "map" {
+					if _, ok := y.obj["__setindex__"]; ok {
+						callable := y.obj["__setindex__"]
+						r := ArValidToAny(resp)
+						_, err := runCall(call{
+							callable: callable,
+							args:     []any{key, r},
+							line:     v.line,
+							path:     v.path,
+							code:     v.code,
+						}, stack, stacklevel+1)
+						return nil, err
+					}
+				} else {
+					if isUnhashable(key) {
+						return nil, ArErr{"Runtime Error", "can't use unhashable type as map key: " + typeof(key), v.line, v.path, v.code, true}
+					}
+					varMutex.Lock()
+					y.obj[key] = resp
+					varMutex.Unlock()
 				}
-				varMutex.Lock()
-				y.obj[key] = resp
-				varMutex.Unlock()
 			default:
 				return nil, ArErr{"Runtime Error", "can't set for non map", v.line, v.path, v.code, true}
 			}