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89 lines
1.6 KiB
89 lines
1.6 KiB
package forge
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import (
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"errors"
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"fmt"
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"math"
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"strconv"
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)
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func asBoolean(value interface{}) (bool, error) {
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switch val := value.(type) {
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case bool:
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return val, nil
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case float64:
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return val != 0, nil
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case int64:
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return val != 0, nil
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case nil:
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return false, nil
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case string:
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return val != "", nil
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}
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msg := fmt.Sprintf("Could not convert value %s to type BOOLEAN", value)
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return false, errors.New(msg)
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}
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func asFloat(value interface{}) (float64, error) {
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switch val := value.(type) {
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case bool:
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v := float64(0)
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if val {
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v = float64(1)
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}
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return v, nil
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case float64:
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return val, nil
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case int64:
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return float64(val), nil
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case string:
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return strconv.ParseFloat(val, 64)
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}
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msg := fmt.Sprintf("Could not convert value %s to type FLOAT", value)
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return 0, errors.New(msg)
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}
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func asInteger(value interface{}) (int64, error) {
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switch val := value.(type) {
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case bool:
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v := int64(0)
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if val {
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v = int64(1)
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}
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return v, nil
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case float64:
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return int64(math.Trunc(val)), nil
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case int64:
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return val, nil
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case string:
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return strconv.ParseInt(val, 10, 64)
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}
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msg := fmt.Sprintf("Could not convert value %s to type INTEGER", value)
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return 0, errors.New(msg)
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}
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func asString(value interface{}) (string, error) {
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switch val := value.(type) {
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case bool:
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s := "False"
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if val {
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s = "True"
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}
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return s, nil
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case float64:
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return strconv.FormatFloat(val, 10, -1, 64), nil
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case int64:
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return strconv.FormatInt(val, 10), nil
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case nil:
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return "Null", nil
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case string:
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return val, nil
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}
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msg := fmt.Sprintf("Could not convert value %s to type STRING", value)
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return "", errors.New(msg)
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}
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