156 lines
2.5 KiB
Go
156 lines
2.5 KiB
Go
package objects
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func builtinString(args ...Object) (Object, error) {
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argsLen := len(args)
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if !(argsLen == 1 || argsLen == 2) {
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return nil, ErrWrongNumArguments
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}
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if _, ok := args[0].(*String); ok {
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return args[0], nil
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}
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v, ok := ToString(args[0])
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if ok {
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return &String{Value: v}, nil
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}
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if argsLen == 2 {
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return args[1], nil
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}
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return UndefinedValue, nil
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}
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func builtinInt(args ...Object) (Object, error) {
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argsLen := len(args)
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if !(argsLen == 1 || argsLen == 2) {
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return nil, ErrWrongNumArguments
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}
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if _, ok := args[0].(*Int); ok {
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return args[0], nil
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}
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v, ok := ToInt64(args[0])
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if ok {
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return &Int{Value: v}, nil
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}
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if argsLen == 2 {
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return args[1], nil
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}
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return UndefinedValue, nil
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}
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func builtinFloat(args ...Object) (Object, error) {
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argsLen := len(args)
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if !(argsLen == 1 || argsLen == 2) {
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return nil, ErrWrongNumArguments
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}
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if _, ok := args[0].(*Float); ok {
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return args[0], nil
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}
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v, ok := ToFloat64(args[0])
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if ok {
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return &Float{Value: v}, nil
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}
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if argsLen == 2 {
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return args[1], nil
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}
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return UndefinedValue, nil
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}
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func builtinBool(args ...Object) (Object, error) {
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if len(args) != 1 {
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return nil, ErrWrongNumArguments
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}
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if _, ok := args[0].(*Bool); ok {
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return args[0], nil
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}
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v, ok := ToBool(args[0])
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if ok {
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if v {
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return TrueValue, nil
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}
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return FalseValue, nil
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}
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return UndefinedValue, nil
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}
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func builtinChar(args ...Object) (Object, error) {
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argsLen := len(args)
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if !(argsLen == 1 || argsLen == 2) {
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return nil, ErrWrongNumArguments
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}
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if _, ok := args[0].(*Char); ok {
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return args[0], nil
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}
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v, ok := ToRune(args[0])
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if ok {
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return &Char{Value: v}, nil
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}
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if argsLen == 2 {
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return args[1], nil
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}
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return UndefinedValue, nil
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}
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func builtinBytes(args ...Object) (Object, error) {
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argsLen := len(args)
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if !(argsLen == 1 || argsLen == 2) {
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return nil, ErrWrongNumArguments
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}
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// bytes(N) => create a new bytes with given size N
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if n, ok := args[0].(*Int); ok {
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return &Bytes{Value: make([]byte, int(n.Value))}, nil
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}
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v, ok := ToByteSlice(args[0])
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if ok {
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return &Bytes{Value: v}, nil
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}
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if argsLen == 2 {
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return args[1], nil
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}
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return UndefinedValue, nil
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}
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func builtinTime(args ...Object) (Object, error) {
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argsLen := len(args)
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if !(argsLen == 1 || argsLen == 2) {
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return nil, ErrWrongNumArguments
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}
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if _, ok := args[0].(*Time); ok {
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return args[0], nil
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}
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v, ok := ToTime(args[0])
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if ok {
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return &Time{Value: v}, nil
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}
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if argsLen == 2 {
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return args[1], nil
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}
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return UndefinedValue, nil
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}
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