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43 lines
793 B
43 lines
793 B
package otto
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import (
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"fmt"
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"math"
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"reflect"
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"unicode/utf16"
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)
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func (value Value) bool() bool {
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if value.kind == valueBoolean {
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return value.value.(bool)
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}
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if value.IsUndefined() {
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return false
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}
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if value.IsNull() {
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return false
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}
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switch value := value.value.(type) {
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case bool:
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return value
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case int, int8, int16, int32, int64:
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return 0 != reflect.ValueOf(value).Int()
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case uint, uint8, uint16, uint32, uint64:
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return 0 != reflect.ValueOf(value).Uint()
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case float32:
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return 0 != value
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case float64:
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if math.IsNaN(value) || value == 0 {
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return false
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}
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return true
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case string:
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return 0 != len(value)
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case []uint16:
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return 0 != len(utf16.Decode(value))
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}
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if value.IsObject() {
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return true
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}
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panic(fmt.Errorf("toBoolean(%T)", value.value))
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}
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